Install Redis Cluster with Helm

Awbeci
中文

foreword

This article describes how to use helm to create a redis cluster in a k8s cluster for your reference and learning.

Prepare

  • Alibaba Cloud K8S cluster
  • install helm

Install redis cluster

We first add the helm library and search for redis

$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm search repo redis
NAME                                CHART VERSION    APP VERSION    DESCRIPTION
bitnami/redis                       14.6.6           6.2.4          Open source, advanced key-value store. It is of...
bitnami/redis-cluster               6.2.3            6.2.4          Open source, advanced key-value store. It is of...
stable/prometheus-redis-exporter    3.5.0            1.3.4          Prometheus exporter for Redis metrics
stable/redis                        10.5.7           5.0.7          DEPRECATED Open source, advanced key-value stor...
stable/redis-ha                     4.4.6            5.0.6          DEPRECATED - Highly available Kubernetes implem...

The Chart version we installed: 14.6.6, the App version: 6.2.4, and then we pulled the source code, as follows:

$ helm pull bitnami/redis

Unzip the downloaded redis-14.6.6.tgz file, as shown below:

image.png

After that we open the values.yaml file as follows:

## @section Global parameters
## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry, imagePullSecrets and storageClass

## @param global.imageRegistry Global Docker image registry
## @param global.imagePullSecrets Global Docker registry secret names as an array
## @param global.storageClass Global StorageClass for Persistent Volume(s)
## @param global.redis.password Global Redis(TM) password (overrides `auth.password`)
##
global:
  imageRegistry:
  ## E.g.
  ## imagePullSecrets:
  ##   - myRegistryKeySecretName
  ##
  imagePullSecrets: []
  storageClass:
  redis:
    password:

## @section Common parameters

## @param kubeVersion Override Kubernetes version
##
kubeVersion:
## @param nameOverride String to partially override common.names.fullname
##
nameOverride:
## @param fullnameOverride String to fully override common.names.fullname
##
fullnameOverride:
## @param commonLabels Labels to add to all deployed objects
##
commonLabels: {}
## @param commonAnnotations Annotations to add to all deployed objects
##
commonAnnotations: {}
## @param clusterDomain Kubernetes cluster domain name
##
clusterDomain: cluster.local
## @param extraDeploy Array of extra objects to deploy with the release
##
extraDeploy: []

## @section Redis(TM) Image parameters

## Bitnami Redis(TM) image
## ref: https://hub.docker.com/r/bitnami/redis/tags/
## @param image.registry Redis(TM) image registry
## @param image.repository Redis(TM) image repository
## @param image.tag Redis(TM) image tag (immutable tags are recommended)
## @param image.pullPolicy Redis(TM) image pull policy
## @param image.pullSecrets Redis(TM) image pull secrets
## @param image.debug Enable image debug mode
##
image:
  registry: docker.io
  repository: bitnami/redis
  tag: 6.2.4-debian-10-r13
  ## Specify a imagePullPolicy
  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
  ##
  pullPolicy: IfNotPresent
  ## Optionally specify an array of imagePullSecrets.
  ## Secrets must be manually created in the namespace.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
  ## e.g:
  ## pullSecrets:
  ##   - myRegistryKeySecretName
  ##
  pullSecrets: []
  ## Enable debug mode
  ##
  debug: false

## @section Redis(TM) common configuration parameters
## https://github.com/bitnami/bitnami-docker-redis#configuration

## @param architecture Redis(TM) architecture. Allowed values: `standalone` or `replication`
##
architecture: replication
## Redis(TM) Authentication parameters
## ref: https://github.com/bitnami/bitnami-docker-redis#setting-the-server-password-on-first-run
##
auth:
  ## @param auth.enabled Enable password authentication
  ##
  enabled: true
  ## @param auth.sentinel Enable password authentication on sentinels too
  ##
  sentinel: true
  ## @param auth.password Redis(TM) password
  ## Defaults to a random 10-character alphanumeric string if not set
  ##
  password: ""
  ## @param auth.existingSecret The name of an existing secret with Redis(TM) credentials
  ## NOTE: When it's set, the previous `auth.password` parameter is ignored
  ##
  existingSecret:
  ## @param auth.existingSecretPasswordKey Password key to be retrieved from existing secret
  ## NOTE: ignored unless `auth.existingSecret` parameter is set
  ##
  existingSecretPasswordKey:
  ## @param auth.usePasswordFiles Mount credentials as files instead of using an environment variable
  ##
  usePasswordFiles: false
## @skip commonConfiguration
## ref: https://redis.io/topics/config
##
commonConfiguration: |-
  # Enable AOF https://redis.io/topics/persistence#append-only-file
  appendonly yes
  # Disable RDB persistence, AOF persistence already enabled.
  save ""
## @param existingConfigmap The name of an existing ConfigMap with your custom configuration for Redis(TM) nodes
##
existingConfigmap:

## @section Redis(TM) master configuration parameters

master:
  ## @param master.configuration Configuration for Redis(TM) master nodes
  ## ref: https://redis.io/topics/config
  ##
  configuration:
  ## @param master.disableCommands [array] Array with Redis(TM) commands to disable on master nodes
  ## Commands will be completely disabled by renaming each to an empty string.
  ## ref: https://redis.io/topics/security#disabling-of-specific-commands
  ##
  disableCommands:
    - FLUSHDB
    - FLUSHALL
  ## @param master.command Override default container command (useful when using custom images)
  ##
  command: []
  ## @param master.args Override default container args (useful when using custom images)
  ##
  args: []
  ## @param master.preExecCmds Additional commands to run prior to starting Redis(TM) master
  ##
  preExecCmds: []
  ## @param master.extraFlags Array with additional command line flags for Redis(TM) master
  ## e.g:
  ## extraFlags:
  ##  - "--maxmemory-policy volatile-ttl"
  ##  - "--repl-backlog-size 1024mb"
  ##
  extraFlags: []
  ## @param master.extraEnvVars Array with extra environment variables to add to Redis(TM) master nodes
  ## e.g:
  ## extraEnvVars:
  ##   - name: FOO
  ##     value: "bar"
  ##
  extraEnvVars: []
  ## @param master.extraEnvVarsCM Name of existing ConfigMap containing extra env vars for Redis(TM) master nodes
  ##
  extraEnvVarsCM:
  ## @param master.extraEnvVarsSecret Name of existing Secret containing extra env vars for Redis(TM) master nodes
  ##
  extraEnvVarsSecret:
  ## @param master.containerPort Container port to open on Redis(TM) master nodes
  ##
  containerPort: 6379
  ## Configure extra options for Redis(TM) containers' liveness and readiness probes
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes
  ## @param master.livenessProbe.enabled Enable livenessProbe on Redis(TM) master nodes
  ## @param master.livenessProbe.initialDelaySeconds Initial delay seconds for livenessProbe
  ## @param master.livenessProbe.periodSeconds Period seconds for livenessProbe
  ## @param master.livenessProbe.timeoutSeconds Timeout seconds for livenessProbe
  ## @param master.livenessProbe.failureThreshold Failure threshold for livenessProbe
  ## @param master.livenessProbe.successThreshold Success threshold for livenessProbe
  ##
  livenessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 5
    successThreshold: 1
    failureThreshold: 5
  ## @param master.readinessProbe.enabled Enable readinessProbe on Redis(TM) master nodes
  ## @param master.readinessProbe.initialDelaySeconds Initial delay seconds for readinessProbe
  ## @param master.readinessProbe.periodSeconds Period seconds for readinessProbe
  ## @param master.readinessProbe.timeoutSeconds Timeout seconds for readinessProbe
  ## @param master.readinessProbe.failureThreshold Failure threshold for readinessProbe
  ## @param master.readinessProbe.successThreshold Success threshold for readinessProbe
  ##
  readinessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 1
    successThreshold: 1
    failureThreshold: 5
  ## @param master.customLivenessProbe Custom livenessProbe that overrides the default one
  ##
  customLivenessProbe: {}
  ## @param master.customReadinessProbe Custom readinessProbe that overrides the default one
  ##
  customReadinessProbe: {}
  ## Redis(TM) master resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ## @param master.resources.limits The resources limits for the Redis(TM) master containers
  ## @param master.resources.requests The requested resources for the Redis(TM) master containers
  ##
  resources:
    limits: {}
    requests: {}
  ## Configure Pods Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
  ## @param master.podSecurityContext.enabled Enabled Redis(TM) master pods' Security Context
  ## @param master.podSecurityContext.fsGroup Set Redis(TM) master pod's Security Context fsGroup
  ##
  podSecurityContext:
    enabled: true
    fsGroup: 1001
  ## Configure Container Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
  ## @param master.containerSecurityContext.enabled Enabled Redis(TM) master containers' Security Context
  ## @param master.containerSecurityContext.runAsUser Set Redis(TM) master containers' Security Context runAsUser
  ##
  containerSecurityContext:
    enabled: true
    runAsUser: 1001
  ## @param master.schedulerName Alternate scheduler for Redis(TM) master pods
  ## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
  ##
  schedulerName:
  ## @param master.updateStrategy.type Redis(TM) master statefulset strategy type
  ## @skip master.updateStrategy.rollingUpdate
  ## ref: https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#update-strategies
  ##
  updateStrategy:
    ## StrategyType
    ## Can be set to RollingUpdate or OnDelete
    ##
    type: RollingUpdate
    rollingUpdate: {}
  ## @param master.priorityClassName Redis(TM) master pods' priorityClassName
  ##
  priorityClassName: ""
  ## @param master.hostAliases Redis(TM) master pods host aliases
  ## https://kubernetes.io/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases/
  ##
  hostAliases: []
  ## @param master.podLabels Extra labels for Redis(TM) master pods
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
  ##
  podLabels: {}
  ## @param master.podAnnotations Annotations for Redis(TM) master pods
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
  ##
  podAnnotations: {}
  ## @param master.shareProcessNamespace Share a single process namespace between all of the containers in Redis(TM) master pods
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/
  ##
  shareProcessNamespace: false
  ## @param master.podAffinityPreset Pod affinity preset. Ignored if `master.affinity` is set. Allowed values: `soft` or `hard`
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity
  ##
  podAffinityPreset: ""
  ## @param master.podAntiAffinityPreset Pod anti-affinity preset. Ignored if `master.affinity` is set. Allowed values: `soft` or `hard`
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity
  ##
  podAntiAffinityPreset: soft
  ## Node master.affinity preset
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#node-affinity
  ##
  nodeAffinityPreset:
    ## @param master.nodeAffinityPreset.type Node affinity preset type. Ignored if `master.affinity` is set. Allowed values: `soft` or `hard`
    ##
    type: ""
    ## @param master.nodeAffinityPreset.key Node label key to match. Ignored if `master.affinity` is set
    ##
    key: ""
    ## @param master.nodeAffinityPreset.values Node label values to match. Ignored if `master.affinity` is set
    ## E.g.
    ## values:
    ##   - e2e-az1
    ##   - e2e-az2
    ##
    values: []
  ## @param master.affinity Affinity for Redis(TM) master pods assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  ## NOTE: `master.podAffinityPreset`, `master.podAntiAffinityPreset`, and `master.nodeAffinityPreset` will be ignored when it's set
  ##
  affinity: {}
  ## @param master.nodeSelector Node labels for Redis(TM) master pods assignment
  ## ref: https://kubernetes.io/docs/user-guide/node-selection/
  ##
  nodeSelector: {}
  ## @param master.tolerations Tolerations for Redis(TM) master pods assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
  ##
  tolerations: []
  ## @param master.spreadConstraints Spread Constraints for Redis(TM) master pod assignment
  ## ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/
  ## E.g.
  ## spreadConstraints:
  ##   - maxSkew: 1
  ##     topologyKey: node
  ##     whenUnsatisfiable: DoNotSchedule
  ##
  spreadConstraints: {}
  ## @param master.lifecycleHooks for the Redis(TM) master container(s) to automate configuration before or after startup
  ##
  lifecycleHooks: {}
  ## @param master.extraVolumes Optionally specify extra list of additional volumes for the Redis(TM) master pod(s)
  ##
  extraVolumes: []
  ## @param master.extraVolumeMounts Optionally specify extra list of additional volumeMounts for the Redis(TM) master container(s)
  ##
  extraVolumeMounts: []
  ## @param master.sidecars Add additional sidecar containers to the Redis(TM) master pod(s)
  ## e.g:
  ## sidecars:
  ##   - name: your-image-name
  ##     image: your-image
  ##     imagePullPolicy: Always
  ##     ports:
  ##       - name: portname
  ##         containerPort: 1234
  ##
  sidecars: {}
  ## @param master.initContainers Add additional init containers to the Redis(TM) master pod(s)
  ## ref: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/
  ## e.g:
  ## initContainers:
  ##  - name: your-image-name
  ##    image: your-image
  ##    imagePullPolicy: Always
  ##    command: ['sh', '-c', 'echo "hello world"']
  ##
  initContainers: {}
  ## Persistence parameters
  ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
  ##
  persistence:
    ## @param master.persistence.enabled Enable persistence on Redis(TM) master nodes using Persistent Volume Claims
    ##
    enabled: true
    ## @param master.persistence.path The path the volume will be mounted at on Redis(TM) master containers
    ## NOTE: Useful when using different Redis(TM) images
    ##
    path: /data
    ## @param master.persistence.subPath The subdirectory of the volume to mount on Redis(TM) master containers
    ## NOTE: Useful in dev environments
    ##
    subPath: ""
    ## @param master.persistence.storageClass Persistent Volume storage class
    ## If defined, storageClassName: <storageClass>
    ## If set to "-", storageClassName: "", which disables dynamic provisioning
    ## If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner
    ##
    storageClass:
    ## @param master.persistence.accessModes [array] Persistent Volume access modes
    ##
    accessModes:
      - ReadWriteOnce
    ## @param master.persistence.size Persistent Volume size
    ##
    size: 8Gi
    ## @param master.persistence.annotations Additional custom annotations for the PVC
    ##
    annotations: {}
    ## @param master.persistence.selector Additional labels to match for the PVC
    ## e.g:
    ## selector:
    ##   matchLabels:
    ##     app: my-app
    ##
    selector: {}
    ## @param master.persistence.existingClaim Use a existing PVC which must be created manually before bound
    ## NOTE: requires master.persistence.enabled: true
    ##
    existingClaim:
  ## Redis(TM) master service parameters
  ##
  service:
    ## @param master.service.type Redis(TM) master service type
    ##
    type: ClusterIP
    ## @param master.service.port Redis(TM) master service port
    ##
    port: 6379
    ## @param master.service.nodePort Node port for Redis(TM) master
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
    ## NOTE: choose port between <30000-32767>
    ##
    nodePort:
    ## @param master.service.externalTrafficPolicy Redis(TM) master service external traffic policy
    ## ref: https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
    ##
    externalTrafficPolicy: Cluster
    ## @param master.service.clusterIP Redis(TM) master service Cluster IP
    ##
    clusterIP:
    ## @param master.service.loadBalancerIP Redis(TM) master service Load Balancer IP
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    loadBalancerIP:
    ## @param master.service.loadBalancerSourceRanges Redis(TM) master service Load Balancer sources
    ## https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/#restrict-access-for-loadbalancer-service
    ## e.g.
    ## loadBalancerSourceRanges:
    ##   - 10.10.10.0/24
    ##
    loadBalancerSourceRanges: []
    ## @param master.service.annotations Additional custom annotations for Redis(TM) master service
    ##
    annotations: {}
  ## @param master.terminationGracePeriodSeconds Integer setting the termination grace period for the redis-master pods
  ##
  terminationGracePeriodSeconds: 30

## @section Redis(TM) replicas configuration parameters

replica:
  ## @param replica.replicaCount Number of Redis(TM) replicas to deploy
  ##
  replicaCount: 3
  ## @param replica.configuration Configuration for Redis(TM) replicas nodes
  ## ref: https://redis.io/topics/config
  ##
  configuration:
  ## @param replica.disableCommands [array] Array with Redis(TM) commands to disable on replicas nodes
  ## Commands will be completely disabled by renaming each to an empty string.
  ## ref: https://redis.io/topics/security#disabling-of-specific-commands
  ##
  disableCommands:
    - FLUSHDB
    - FLUSHALL
  ## @param replica.command Override default container command (useful when using custom images)
  ##
  command: []
  ## @param replica.args Override default container args (useful when using custom images)
  ##
  args: []
  ## @param replica.preExecCmds Additional commands to run prior to starting Redis(TM) replicas
  ##
  preExecCmds: []
  ## @param replica.extraFlags Array with additional command line flags for Redis(TM) replicas
  ## e.g:
  ## extraFlags:
  ##  - "--maxmemory-policy volatile-ttl"
  ##  - "--repl-backlog-size 1024mb"
  ##
  extraFlags: []
  ## @param replica.extraEnvVars Array with extra environment variables to add to Redis(TM) replicas nodes
  ## e.g:
  ## extraEnvVars:
  ##   - name: FOO
  ##     value: "bar"
  ##
  extraEnvVars: []
  ## @param replica.extraEnvVarsCM Name of existing ConfigMap containing extra env vars for Redis(TM) replicas nodes
  ##
  extraEnvVarsCM:
  ## @param replica.extraEnvVarsSecret Name of existing Secret containing extra env vars for Redis(TM) replicas nodes
  ##
  extraEnvVarsSecret:
  ## @param replica.containerPort Container port to open on Redis(TM) replicas nodes
  ##
  containerPort: 6379
  ## Configure extra options for Redis(TM) containers' liveness and readiness probes
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes
  ## @param replica.livenessProbe.enabled Enable livenessProbe on Redis(TM) replicas nodes
  ## @param replica.livenessProbe.initialDelaySeconds Initial delay seconds for livenessProbe
  ## @param replica.livenessProbe.periodSeconds Period seconds for livenessProbe
  ## @param replica.livenessProbe.timeoutSeconds Timeout seconds for livenessProbe
  ## @param replica.livenessProbe.failureThreshold Failure threshold for livenessProbe
  ## @param replica.livenessProbe.successThreshold Success threshold for livenessProbe
  ##
  livenessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 5
    successThreshold: 1
    failureThreshold: 5
  ## @param replica.readinessProbe.enabled Enable readinessProbe on Redis(TM) replicas nodes
  ## @param replica.readinessProbe.initialDelaySeconds Initial delay seconds for readinessProbe
  ## @param replica.readinessProbe.periodSeconds Period seconds for readinessProbe
  ## @param replica.readinessProbe.timeoutSeconds Timeout seconds for readinessProbe
  ## @param replica.readinessProbe.failureThreshold Failure threshold for readinessProbe
  ## @param replica.readinessProbe.successThreshold Success threshold for readinessProbe
  ##
  readinessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 1
    successThreshold: 1
    failureThreshold: 5
  ## @param replica.customLivenessProbe Custom livenessProbe that overrides the default one
  ##
  customLivenessProbe: {}
  ## @param replica.customReadinessProbe Custom readinessProbe that overrides the default one
  ##
  customReadinessProbe: {}
  ## Redis(TM) replicas resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ## @param replica.resources.limits The resources limits for the Redis(TM) replicas containers
  ## @param replica.resources.requests The requested resources for the Redis(TM) replicas containers
  ##
  resources:
    # We usually recommend not to specify default resources and to leave this as a conscious
    # choice for the user. This also increases chances charts run on environments with little
    # resources, such as Minikube. If you do want to specify resources, uncomment the following
    # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
    limits: {}
    #   cpu: 250m
    #   memory: 256Mi
    requests: {}
    #   cpu: 250m
    #   memory: 256Mi
  ## Configure Pods Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
  ## @param replica.podSecurityContext.enabled Enabled Redis(TM) replicas pods' Security Context
  ## @param replica.podSecurityContext.fsGroup Set Redis(TM) replicas pod's Security Context fsGroup
  ##
  podSecurityContext:
    enabled: true
    fsGroup: 1001
  ## Configure Container Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
  ## @param replica.containerSecurityContext.enabled Enabled Redis(TM) replicas containers' Security Context
  ## @param replica.containerSecurityContext.runAsUser Set Redis(TM) replicas containers' Security Context runAsUser
  ##
  containerSecurityContext:
    enabled: true
    runAsUser: 1001
  ## @param replica.schedulerName Alternate scheduler for Redis(TM) replicas pods
  ## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
  ##
  schedulerName:
  ## @param replica.updateStrategy.type Redis(TM) replicas statefulset strategy type
  ## @skip replica.updateStrategy.rollingUpdate
  ## ref: https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#update-strategies
  ##
  updateStrategy:
    ## StrategyType
    ## Can be set to RollingUpdate or OnDelete
    ##
    type: RollingUpdate
    rollingUpdate: {}
  ## @param replica.priorityClassName Redis(TM) replicas pods' priorityClassName
  ##
  priorityClassName: ""
  ## @param replica.hostAliases Redis(TM) replicas pods host aliases
  ## https://kubernetes.io/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases/
  ##
  hostAliases: []
  ## @param replica.podLabels Extra labels for Redis(TM) replicas pods
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
  ##
  podLabels: {}
  ## @param replica.podAnnotations Annotations for Redis(TM) replicas pods
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
  ##
  podAnnotations: {}
  ## @param replica.shareProcessNamespace Share a single process namespace between all of the containers in Redis(TM) replicas pods
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/
  ##
  shareProcessNamespace: false
  ## @param replica.podAffinityPreset Pod affinity preset. Ignored if `replica.affinity` is set. Allowed values: `soft` or `hard`
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity
  ##
  podAffinityPreset: ""
  ## @param replica.podAntiAffinityPreset Pod anti-affinity preset. Ignored if `replica.affinity` is set. Allowed values: `soft` or `hard`
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity
  ##
  podAntiAffinityPreset: soft
  ## Node affinity preset
  ## ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#node-affinity
  ##
  nodeAffinityPreset:
    ## @param replica.nodeAffinityPreset.type Node affinity preset type. Ignored if `replica.affinity` is set. Allowed values: `soft` or `hard`
    ##
    type: ""
    ## @param replica.nodeAffinityPreset.key Node label key to match. Ignored if `replica.affinity` is set
    ##
    key: ""
    ## @param replica.nodeAffinityPreset.values Node label values to match. Ignored if `replica.affinity` is set
    ## E.g.
    ## values:
    ##   - e2e-az1
    ##   - e2e-az2
    ##
    values: []
  ## @param replica.affinity Affinity for Redis(TM) replicas pods assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
  ## NOTE: `replica.podAffinityPreset`, `replica.podAntiAffinityPreset`, and `replica.nodeAffinityPreset` will be ignored when it's set
  ##
  affinity: {}
  ## @param replica.nodeSelector Node labels for Redis(TM) replicas pods assignment
  ## ref: https://kubernetes.io/docs/user-guide/node-selection/
  ##
  nodeSelector: {}
  ## @param replica.tolerations Tolerations for Redis(TM) replicas pods assignment
  ## ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
  ##
  tolerations: []
  ## @param replica.spreadConstraints Spread Constraints for Redis(TM) replicas pod assignment
  ## ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/
  ## E.g.
  ## spreadConstraints:
  ##   - maxSkew: 1
  ##     topologyKey: node
  ##     whenUnsatisfiable: DoNotSchedule
  ##
  spreadConstraints: {}
  ## @param replica.lifecycleHooks for the Redis(TM) replica container(s) to automate configuration before or after startup
  ##
  lifecycleHooks: {}
  ## @param replica.extraVolumes Optionally specify extra list of additional volumes for the Redis(TM) replicas pod(s)
  ##
  extraVolumes: []
  ## @param replica.extraVolumeMounts Optionally specify extra list of additional volumeMounts for the Redis(TM) replicas container(s)
  ##
  extraVolumeMounts: []
  ## @param replica.sidecars Add additional sidecar containers to the Redis(TM) replicas pod(s)
  ## e.g:
  ## sidecars:
  ##   - name: your-image-name
  ##     image: your-image
  ##     imagePullPolicy: Always
  ##     ports:
  ##       - name: portname
  ##         containerPort: 1234
  ##
  sidecars: {}
  ## @param replica.initContainers Add additional init containers to the Redis(TM) replicas pod(s)
  ## ref: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/
  ## e.g:
  ## initContainers:
  ##  - name: your-image-name
  ##    image: your-image
  ##    imagePullPolicy: Always
  ##    command: ['sh', '-c', 'echo "hello world"']
  ##
  initContainers: {}
  ## Persistence Parameters
  ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
  ##
  persistence:
    ## @param replica.persistence.enabled Enable persistence on Redis(TM) replicas nodes using Persistent Volume Claims
    ##
    enabled: true
    ## @param replica.persistence.path The path the volume will be mounted at on Redis(TM) replicas containers
    ## NOTE: Useful when using different Redis(TM) images
    ##
    path: /data
    ## @param replica.persistence.subPath The subdirectory of the volume to mount on Redis(TM) replicas containers
    ## NOTE: Useful in dev environments
    ##
    subPath: ""
    ## @param replica.persistence.storageClass Persistent Volume storage class
    ## If defined, storageClassName: <storageClass>
    ## If set to "-", storageClassName: "", which disables dynamic provisioning
    ## If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner
    ##
    storageClass:
    ## @param replica.persistence.accessModes [array] Persistent Volume access modes
    ##
    accessModes:
      - ReadWriteOnce
    ## @param replica.persistence.size Persistent Volume size
    ##
    size: 8Gi
    ## @param replica.persistence.annotations Additional custom annotations for the PVC
    ##
    annotations: {}
    ## @param replica.persistence.selector Additional labels to match for the PVC
    ## e.g:
    ## selector:
    ##   matchLabels:
    ##     app: my-app
    ##
    selector: {}
  ## Redis(TM) replicas service parameters
  ##
  service:
    ## @param replica.service.type Redis(TM) replicas service type
    ##
    type: ClusterIP
    ## @param replica.service.port Redis(TM) replicas service port
    ##
    port: 6379
    ## @param replica.service.nodePort Node port for Redis(TM) replicas
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
    ## NOTE: choose port between <30000-32767>
    ##
    nodePort:
    ## @param replica.service.externalTrafficPolicy Redis(TM) replicas service external traffic policy
    ## ref: https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
    ##
    externalTrafficPolicy: Cluster
    ## @param replica.service.clusterIP Redis(TM) replicas service Cluster IP
    ##
    clusterIP:
    ## @param replica.service.loadBalancerIP Redis(TM) replicas service Load Balancer IP
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    loadBalancerIP:
    ## @param replica.service.loadBalancerSourceRanges Redis(TM) replicas service Load Balancer sources
    ## https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/#restrict-access-for-loadbalancer-service
    ## e.g.
    ## loadBalancerSourceRanges:
    ##   - 10.10.10.0/24
    ##
    loadBalancerSourceRanges: []
    ## @param replica.service.annotations Additional custom annotations for Redis(TM) replicas service
    ##
    annotations: {}
  ## @param replica.terminationGracePeriodSeconds Integer setting the termination grace period for the redis-replicas pods
  ##
  terminationGracePeriodSeconds: 30
  ## Autoscaling configuration
  ##
  autoscaling:
    enabled: false
    minReplicas: 1
    maxReplicas: 11
    # targetCPU: 50
    # targetMemory: 50

## @section Redis(TM) Sentinel configuration parameters

sentinel:
  ## @param sentinel.enabled Use Redis(TM) Sentinel on Redis(TM) pods.
  ## IMPORTANT: this will disable the master and replicas services and
  ## create a single Redis(TM) service exposing both the Redis and Sentinel ports
  ##
  enabled: false
  ## Bitnami Redis(TM) Sentinel image version
  ## ref: https://hub.docker.com/r/bitnami/redis-sentinel/tags/
  ## @param sentinel.image.registry Redis(TM) Sentinel image registry
  ## @param sentinel.image.repository Redis(TM) Sentinel image repository
  ## @param sentinel.image.tag Redis(TM) Sentinel image tag (immutable tags are recommended)
  ## @param sentinel.image.pullPolicy Redis(TM) Sentinel image pull policy
  ## @param sentinel.image.pullSecrets Redis(TM) Sentinel image pull secrets
  ## @param sentinel.image.debug Enable image debug mode
  ##
  image:
    registry: docker.io
    repository: bitnami/redis-sentinel
    tag: 6.2.4-debian-10-r14
    ## Specify a imagePullPolicy
    ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
    ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
    ##
    pullPolicy: IfNotPresent
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ## e.g:
    ## pullSecrets:
    ##   - myRegistryKeySecretName
    ##
    pullSecrets: []
    ## Enable debug mode
    ##
    debug: false
  ## @param sentinel.masterSet Master set name
  ##
  masterSet: mymaster
  ## @param sentinel.quorum Sentinel Quorum
  ##
  quorum: 2
  ## Sentinel timing restrictions
  ## @param sentinel.downAfterMilliseconds Timeout for detecting a Redis(TM) node is down
  ## @param sentinel.failoverTimeout Timeout for performing a election failover
  ## @param sentinel.cleanDelaySeconds Delay seconds when cleaning nodes IPs
  #
  downAfterMilliseconds: 60000
  failoverTimeout: 18000
  cleanDelaySeconds: 5
  ## @param sentinel.parallelSyncs Number of replicas that can be reconfigured in parallel to use the new master after a failover
  ##
  parallelSyncs: 1
  ## @param sentinel.staticID Enable static Sentinel IDs for each replica
  ## If disabled each sentinel will generate a random id at startup
  ## If enabled, each replicas will have a constant ID on each start-up
  ##
  staticID: false
  ## @param sentinel.configuration Configuration for Redis(TM) Sentinel nodes
  ## ref: https://redis.io/topics/sentinel
  ##
  configuration:
  ## @param sentinel.command Override default container command (useful when using custom images)
  ##
  command: []
  ## @param sentinel.args Override default container args (useful when using custom images)
  ##
  args: []
  ## @param sentinel.preExecCmds Additional commands to run prior to starting Redis(TM) Sentinel
  ##
  preExecCmds: []
  ## @param sentinel.containerPort Container port to open on Redis(TM) Sentinel nodes
  ##
  containerPort: 26379
  ## Configure extra options for Redis(TM) containers' liveness and readiness probes
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/#configure-probes
  ## @param sentinel.livenessProbe.enabled Enable livenessProbe on Redis(TM) Sentinel nodes
  ## @param sentinel.livenessProbe.initialDelaySeconds Initial delay seconds for livenessProbe
  ## @param sentinel.livenessProbe.periodSeconds Period seconds for livenessProbe
  ## @param sentinel.livenessProbe.timeoutSeconds Timeout seconds for livenessProbe
  ## @param sentinel.livenessProbe.failureThreshold Failure threshold for livenessProbe
  ## @param sentinel.livenessProbe.successThreshold Success threshold for livenessProbe
  ##
  livenessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 5
    successThreshold: 1
    failureThreshold: 5
  ## @param sentinel.readinessProbe.enabled Enable readinessProbe on Redis(TM) Sentinel nodes
  ## @param sentinel.readinessProbe.initialDelaySeconds Initial delay seconds for readinessProbe
  ## @param sentinel.readinessProbe.periodSeconds Period seconds for readinessProbe
  ## @param sentinel.readinessProbe.timeoutSeconds Timeout seconds for readinessProbe
  ## @param sentinel.readinessProbe.failureThreshold Failure threshold for readinessProbe
  ## @param sentinel.readinessProbe.successThreshold Success threshold for readinessProbe
  ##
  readinessProbe:
    enabled: true
    initialDelaySeconds: 5
    periodSeconds: 5
    timeoutSeconds: 1
    successThreshold: 1
    failureThreshold: 5
  ## @param sentinel.customLivenessProbe Custom livenessProbe that overrides the default one
  ##
  customLivenessProbe: {}
  ## @param sentinel.customReadinessProbe Custom readinessProbe that overrides the default one
  ##
  customReadinessProbe: {}
  ## Redis(TM) Sentinel resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ## @param sentinel.resources.limits The resources limits for the Redis(TM) Sentinel containers
  ## @param sentinel.resources.requests The requested resources for the Redis(TM) Sentinel containers
  ##
  resources:
    limits: {}
    requests: {}
  ## Configure Container Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
  ## @param sentinel.containerSecurityContext.enabled Enabled Redis(TM) Sentinel containers' Security Context
  ## @param sentinel.containerSecurityContext.runAsUser Set Redis(TM) Sentinel containers' Security Context runAsUser
  ##
  containerSecurityContext:
    enabled: true
    runAsUser: 1001
  ## @param sentinel.lifecycleHooks for the Redis(TM) sentinel container(s) to automate configuration before or after startup
  ##
  lifecycleHooks: {}
  ## @param sentinel.extraVolumes Optionally specify extra list of additional volumes for the Redis(TM) Sentinel
  ##
  extraVolumes: []
  ## @param sentinel.extraVolumeMounts Optionally specify extra list of additional volumeMounts for the Redis(TM) Sentinel container(s)
  ##
  extraVolumeMounts: []
  ## Redis(TM) Sentinel service parameters
  ##
  service:
    ## @param sentinel.service.type Redis(TM) Sentinel service type
    ##
    type: ClusterIP
    ## @param sentinel.service.port Redis(TM) service port for Redis(TM)
    ##
    port: 6379
    ## @param sentinel.service.sentinelPort Redis(TM) service port for Sentinel
    ##
    sentinelPort: 26379
    ## @param sentinel.service.nodePorts.redis Node port for Redis(TM)
    ## @param sentinel.service.nodePorts.sentinel Node port for Sentinel
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
    ## NOTE: choose port between <30000-32767>
    ##
    nodePorts:
      redis:
      sentinel:
    ## @param sentinel.service.externalTrafficPolicy Redis(TM) Sentinel service external traffic policy
    ## ref: https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
    ##
    externalTrafficPolicy: Cluster
    ## @param sentinel.service.clusterIP Redis(TM) Sentinel service Cluster IP
    ##
    clusterIP:
    ## @param sentinel.service.loadBalancerIP Redis(TM) Sentinel service Load Balancer IP
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    loadBalancerIP:
    ## @param sentinel.service.loadBalancerSourceRanges Redis(TM) Sentinel service Load Balancer sources
    ## https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/#restrict-access-for-loadbalancer-service
    ## e.g.
    ## loadBalancerSourceRanges:
    ##   - 10.10.10.0/24
    ##
    loadBalancerSourceRanges: []
    ## @param sentinel.service.annotations Additional custom annotations for Redis(TM) Sentinel service
    ##
    annotations: {}
  ## @param sentinel.terminationGracePeriodSeconds Integer setting the termination grace period for the redis-node pods
  ##
  terminationGracePeriodSeconds: 30

## @section Other Parameters

## Network Policy configuration
## ref: https://kubernetes.io/docs/concepts/services-networking/network-policies/
##
networkPolicy:
  ## @param networkPolicy.enabled Enable creation of NetworkPolicy resources
  ##
  enabled: false
  ## @param networkPolicy.allowExternal Don't require client label for connections
  ## When set to false, only pods with the correct client label will have network access to the ports
  ## Redis(TM) is listening on. When true, Redis(TM) will accept connections from any source
  ## (with the correct destination port).
  ##
  allowExternal: true
  ## @param networkPolicy.extraIngress Add extra ingress rules to the NetworkPolicy
  ## e.g:
  ## extraIngress:
  ##   - ports:
  ##       - port: 1234
  ##     from:
  ##       - podSelector:
  ##           - matchLabels:
  ##               - role: frontend
  ##       - podSelector:
  ##           - matchExpressions:
  ##               - key: role
  ##                 operator: In
  ##                 values:
  ##                   - frontend
  ##
  extraIngress: []
  ## @param networkPolicy.extraEgress Add extra ingress rules to the NetworkPolicy
  ## e.g:
  ## extraEgress:
  ##   - ports:
  ##       - port: 1234
  ##     to:
  ##       - podSelector:
  ##           - matchLabels:
  ##               - role: frontend
  ##       - podSelector:
  ##           - matchExpressions:
  ##               - key: role
  ##                 operator: In
  ##                 values:
  ##                   - frontend
  ##
  extraEgress: []
  ## @param networkPolicy.ingressNSMatchLabels Labels to match to allow traffic from other namespaces
  ## @param networkPolicy.ingressNSPodMatchLabels Pod labels to match to allow traffic from other namespaces
  ##
  ingressNSMatchLabels: {}
  ingressNSPodMatchLabels: {}
## PodSecurityPolicy configuration
## ref: https://kubernetes.io/docs/concepts/policy/pod-security-policy/
##
podSecurityPolicy:
  ## @param podSecurityPolicy.create Specifies whether a PodSecurityPolicy should be created (set `podSecurityPolicy.enabled` to `true` to enable it)
  ##
  create: false
  ## @param podSecurityPolicy.enable Enable PodSecurityPolicy
  ##
  enabled: false
## RBAC configuration
##
rbac:
  ## @param rbac.create Specifies whether RBAC resources should be created
  ##
  create: false
  ## @param rbac.rules Custom RBAC rules to set
  ## e.g:
  ## rules:
  ##   - apiGroups:
  ##       - ""
  ##     resources:
  ##       - pods
  ##     verbs:
  ##       - get
  ##       - list
  ##
  rules: []
## ServiceAccount configuration
##
serviceAccount:
  ## @param serviceAccount.create Specifies whether a ServiceAccount should be created
  ##
  create: true
  ## @param serviceAccount.name The name of the ServiceAccount to use.
  ## If not set and create is true, a name is generated using the common.names.fullname template
  ##
  name: ""
  ## @param serviceAccount.automountServiceAccountToken Whether to auto mount the service account token
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/#use-the-default-service-account-to-access-the-api-server
  ##
  automountServiceAccountToken: true
  ## @param serviceAccount.annotations Additional custom annotations for the ServiceAccount
  ##
  annotations: {}
## Redis(TM) Pod Disruption Budget configuration
## ref: https://kubernetes.io/docs/tasks/run-application/configure-pdb/
##
pdb:
  ## @param pdb.create Specifies whether a ServiceAccount should be created
  ##
  create: false
  ## @param pdb.minAvailable Min number of pods that must still be available after the eviction
  ##
  minAvailable: 1
  ## @param pdb.maxUnavailable Max number of pods that can be unavailable after the eviction
  ##
  maxUnavailable:
## TLS configuration
##
tls:
  ## @param tls.enabled Enable TLS traffic
  ##
  enabled: false
  ## @param tls.authClients Require clients to authenticate
  ##
  authClients: true
  ## @param tls.autoGenenerated Enable autogenerated certificates
  ##
  autoGenerated: false
  ## @param tls.existingSecret Then name of the existing secret that contains the TLS certificates
  ##
  existingSecret:
  ## @param tls.certificatesSecret DEPRECATED. Use existingSecret instead.
  ##
  certificatesSecret:
  ## @param tls.certFilename Certificate filename
  ##
  certFilename:
  ## @param tls.certKeyFilename Certificate Key filename
  ##
  certKeyFilename:
  ## @param tls.certCAFilename CA Certificate filename
  ##
  certCAFilename:
  ## @param tls.dhParamsFilename File containing DH params (in order to support DH based ciphers)
  ##
  dhParamsFilename:

## @section Metrics Parameters

metrics:
  ## @param metrics.enabled Start a sidecar prometheus exporter to expose Redis(TM) metrics
  ##
  enabled: false
  ## Bitnami Redis(TM) Exporter image
  ## ref: https://hub.docker.com/r/bitnami/redis-exporter/tags/
  ## @param metrics.image.registry Redis(TM) Exporter image registry
  ## @param metrics.image.repository Redis(TM) Exporter image repository
  ## @param metrics.image.tag Redis(TM) Redis(TM) Exporter image tag (immutable tags are recommended)
  ## @param metrics.image.pullPolicy Redis(TM) Exporter image pull policy
  ## @param metrics.image.pullSecrets Redis(TM) Exporter image pull secrets
  ##
  image:
    registry: docker.io
    repository: bitnami/redis-exporter
    tag: 1.24.0-debian-10-r9
    pullPolicy: IfNotPresent
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ## e.g:
    ## pullSecrets:
    ##   - myRegistryKeySecretName
    ##
    pullSecrets: []
  ## @param metrics.redisTargetHost A way to specify an alternative Redis(TM) hostname
  ## Useful for certificate CN/SAN matching
  ##
  redisTargetHost: "localhost"
  ## @param metrics.extraArgs Extra arguments for Redis(TM) exporter, for example:
  ## e.g.:
  ## extraArgs:
  ##   check-keys: myKey,myOtherKey
  ##
  extraArgs: {}
  ## Configure Container Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
  ## @param metrics.containerSecurityContext.enabled Enabled Redis(TM) exporter containers' Security Context
  ## @param metrics.containerSecurityContext.runAsUser Set Redis(TM) exporter containers' Security Context runAsUser
  ##
  containerSecurityContext:
    enabled: true
    runAsUser: 1001
  ## Redis(TM) exporter resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ## @param metrics.resources.limits The resources limits for the Redis(TM) exporter container
  ## @param metrics.resources.requests The requested resources for the Redis(TM) exporter container
  ##
  resources:
    limits: {}
    requests: {}
  ## @param metrics.podLabels Extra labels for Redis(TM) exporter pods
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
  ##
  podLabels: {}
  ## @param metrics.podAnnotations [object] Annotations for Redis(TM) exporter pods
  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
  ##
  podAnnotations:
    prometheus.io/scrape: "true"
    prometheus.io/port: "9121"
  ## Redis(TM) exporter service parameters
  ##
  service:
    ## @param metrics.service.type Redis(TM) exporter service type
    ##
    type: ClusterIP
    ## @param metrics.service.port Redis(TM) exporter service port
    ##
    port: 9121
    ## @param metrics.service.externalTrafficPolicy Redis(TM) exporter service external traffic policy
    ## ref: https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
    ##
    externalTrafficPolicy: Cluster
    ## @param metrics.service.loadBalancerIP Redis(TM) exporter service Load Balancer IP
    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
    ##
    loadBalancerIP: ""
    ## @param metrics.service.loadBalancerSourceRanges Redis(TM) exporter service Load Balancer sources
    ## https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/#restrict-access-for-loadbalancer-service
    ## e.g.
    ## loadBalancerSourceRanges:
    ##   - 10.10.10.0/24
    ##
    loadBalancerSourceRanges: []
    ## @param metrics.service.annotations Additional custom annotations for Redis(TM) exporter service
    ##
    annotations: {}
  ## Redis(TM) Sentinel Exporter
  ##
  sentinel:
    ## @param metrics.sentinel.enabled Start a sidecar prometheus exporter to expose Redis(TM) Sentinel metrics
    ##
    enabled: false
    ## Bitnami Redis(TM) Sentinel Exporter image
    ## ref: https://hub.docker.com/r/bitnami/redis-sentinel-exporter/tags/
    ## @param metrics.sentinel.image.registry Redis(TM) Sentinel Exporter image registry
    ## @param metrics.sentinel.image.repository Redis(TM) Sentinel Exporter image repository
    ## @param metrics.sentinel.image.tag Redis(TM) Redis(TM) Sentinel Exporter image tag (immutable tags are recommended)
    ## @param metrics.sentinel.image.pullPolicy Redis(TM) Sentinel Exporter image pull policy
    ## @param metrics.sentinel.image.pullSecrets Redis(TM) Sentinel Exporter image pull secrets
    ##
    image:
      registry: docker.io
      repository: bitnami/redis-sentinel-exporter
      tag: 1.7.1-debian-10-r161
      pullPolicy: IfNotPresent
      ## Optionally specify an array of imagePullSecrets.
      ## Secrets must be manually created in the namespace.
      ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
      ## e.g:
      ## pullSecrets:
      ##   - myRegistryKeySecretName
      ##
      pullSecrets: []
    ## @param metrics.sentinel.extraArgs Extra arguments for Redis(TM) Sentinel exporter, for example:
    ## e.g.:
    ## extraArgs:
    ##   check-keys: myKey,myOtherKey
    ##
    extraArgs: {}
    ## Configure Container Security Context
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
    ## @param metrics.sentinel.containerSecurityContext.enabled Enabled Redis(TM) Sentinel exporter containers' Security Context
    ## @param metrics.sentinel.containerSecurityContext.runAsUser Set Redis(TM) Sentinel exporter containers' Security Context runAsUser
    ##
    containerSecurityContext:
      enabled: true
      runAsUser: 1001
    ## Redis(TM) Sentinel exporter resource requests and limits
    ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
    ## @param metrics.sentinel.resources.limits The resources limits for the Redis(TM) Sentinel exporter container
    ## @param metrics.sentinel.resources.requests The requested resources for the Redis(TM) Sentinel exporter container
    ##
    resources:
      limits: {}
      requests: {}
    ## Redis(TM) Sentinel exporter service parameters
    ##
    service:
      ## @param metrics.sentinel.service.type Redis(TM) Sentinel exporter service type
      ##
      type: ClusterIP
      ## @param metrics.sentinel.service.port Redis(TM) Sentinel exporter service port
      ##
      port: 9355
      ## @param metrics.sentinel.service.externalTrafficPolicy Redis(TM) Sentinel exporter service external traffic policy
      ## ref: https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
      ##
      externalTrafficPolicy: Cluster
      ## @param metrics.sentinel.service.loadBalancerIP Redis(TM) Sentinel exporter service Load Balancer IP
      ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
      ##
      loadBalancerIP: ""
      ## @param metrics.sentinel.service.loadBalancerSourceRanges Redis(TM) Sentinel exporter service Load Balancer sources
      ## https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/#restrict-access-for-loadbalancer-service
      ## e.g.
      ## loadBalancerSourceRanges:
      ##   - 10.10.10.0/24
      ##
      loadBalancerSourceRanges: []
      ## @param metrics.sentinel.service.annotations Additional custom annotations for Redis(TM) Sentinel exporter service
      ##
      annotations: {}
  ## Prometheus Service Monitor
  ## ref: https://github.com/coreos/prometheus-operator
  ##      https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#endpoint
  ##
  serviceMonitor:
    ## @param metrics.serviceMonitor.enabled Create ServiceMonitor resource(s) for scraping metrics using PrometheusOperator
    ##
    enabled: false
    ## @param metrics.serviceMonitor.namespace The namespace in which the ServiceMonitor will be created
    ##
    namespace:
    ## @param metrics.serviceMonitor.interval The interval at which metrics should be scraped
    ##
    interval: 30s
    ## @param metrics.serviceMonitor.scrapeTimeout The timeout after which the scrape is ended
    ##
    scrapeTimeout:
    ## @param metrics.serviceMonitor.relabellings Metrics relabellings to add to the scrape endpoint
    ##
    relabellings: []
    ## @param metrics.serviceMonitor.honorLabels Specify honorLabels parameter to add the scrape endpoint
    ##
    honorLabels: false
    ## @param metrics.serviceMonitor.additionalLabels Additional labels that can be used so ServiceMonitor resource(s) can be discovered by Prometheus
    ##
    additionalLabels: {}
  ## Custom PrometheusRule to be defined
  ## ref: https://github.com/coreos/prometheus-operator#customresourcedefinitions
  ##
  prometheusRule:
    ## @param metrics.prometheusRule.enabled Create a custom prometheusRule Resource for scraping metrics using PrometheusOperator
    ##
    enabled: false
    ## @param metrics.prometheusRule.namespace The namespace in which the prometheusRule will be created
    ##
    namespace:
    ## @param metrics.prometheusRule.additionalLabels Additional labels for the prometheusRule
    ##
    additionalLabels: {}
    ## @param metrics.prometheusRule.rules Custom Prometheus rules
    ## e.g:
    ## rules:
    ##   - alert: RedisDown
    ##     expr: redis_up{service="{{ template "common.names.fullname" . }}-metrics"} == 0
    ##     for: 2m
    ##     labels:
    ##       severity: error
    ##     annotations:
    ##       summary: Redis(TM) instance {{ "{{ $labels.instance }}" }} down
    ##       description: Redis(TM) instance {{ "{{ $labels.instance }}" }} is down
    ##    - alert: RedisMemoryHigh
    ##      expr: >
    ##        redis_memory_used_bytes{service="{{ template "common.names.fullname" . }}-metrics"} * 100
    ##        /
    ##        redis_memory_max_bytes{service="{{ template "common.names.fullname" . }}-metrics"}
    ##        > 90
    ##      for: 2m
    ##      labels:
    ##        severity: error
    ##      annotations:
    ##        summary: Redis(TM) instance {{ "{{ $labels.instance }}" }} is using too much memory
    ##        description: |
    ##          Redis(TM) instance {{ "{{ $labels.instance }}" }} is using {{ "{{ $value }}" }}% of its available memory.
    ##    - alert: RedisKeyEviction
    ##      expr: |
    ##        increase(redis_evicted_keys_total{service="{{ template "common.names.fullname" . }}-metrics"}[5m]) > 0
    ##      for: 1s
    ##      labels:
    ##        severity: error
    ##      annotations:
    ##        summary: Redis(TM) instance {{ "{{ $labels.instance }}" }} has evicted keys
    ##        description: |
    ##          Redis(TM) instance {{ "{{ $labels.instance }}" }} has evicted {{ "{{ $value }}" }} keys in the last 5 minutes.
    ##
    rules: []

## @section Init Container Parameters

## 'volumePermissions' init container parameters
## Changes the owner and group of the persistent volume mount point to runAsUser:fsGroup values
##   based on the *podSecurityContext/*containerSecurityContext parameters
##
volumePermissions:
  ## @param volumePermissions.enabled Enable init container that changes the owner/group of the PV mount point to `runAsUser:fsGroup`
  ##
  enabled: false
  ## Bitnami Shell image
  ## ref: https://hub.docker.com/r/bitnami/bitnami-shell/tags/
  ## @param volumePermissions.image.registry Bitnami Shell image registry
  ## @param volumePermissions.image.repository Bitnami Shell image repository
  ## @param volumePermissions.image.tag Bitnami Shell image tag (immutable tags are recommended)
  ## @param volumePermissions.image.pullPolicy Bitnami Shell image pull policy
  ## @param volumePermissions.image.pullSecrets Bitnami Shell image pull secrets
  ##
  image:
    registry: docker.io
    repository: bitnami/bitnami-shell
    tag: 10-debian-10-r112
    pullPolicy: Always
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ## e.g:
    ## pullSecrets:
    ##   - myRegistryKeySecretName
    ##
    pullSecrets: []
  ## Init container's resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ## @param volumePermissions.resources.limits The resources limits for the init container
  ## @param volumePermissions.resources.requests The requested resources for the init container
  ##
  resources:
    limits: {}
    requests: {}
  ## Init container Container Security Context
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-container
  ## @param volumePermissions.containerSecurityContext.runAsUser Set init container's Security Context runAsUser
  ## NOTE: when runAsUser is set to special value "auto", init container will try to chown the
  ##   data folder to auto-determined user&group, using commands: `id -u`:`id -G | cut -d" " -f2`
  ##   "auto" is especially useful for OpenShift which has scc with dynamic user ids (and 0 is not allowed)
  ##
  containerSecurityContext:
    runAsUser: 0

## init-sysctl container parameters
## used to perform sysctl operation to modify Kernel settings (needed sometimes to avoid warnings)
##
sysctl:
  ## @param sysctl.enabled Enable init container to modify Kernel settings
  ##
  enabled: false
  ## Bitnami Shell image
  ## ref: https://hub.docker.com/r/bitnami/bitnami-shell/tags/
  ## @param sysctl.image.registry Bitnami Shell image registry
  ## @param sysctl.image.repository Bitnami Shell image repository
  ## @param sysctl.image.tag Bitnami Shell image tag (immutable tags are recommended)
  ## @param sysctl.image.pullPolicy Bitnami Shell image pull policy
  ## @param sysctl.image.pullSecrets Bitnami Shell image pull secrets
  ##
  image:
    registry: docker.io
    repository: bitnami/bitnami-shell
    tag: 10-debian-10-r112
    pullPolicy: Always
    ## Optionally specify an array of imagePullSecrets.
    ## Secrets must be manually created in the namespace.
    ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
    ## e.g:
    ## pullSecrets:
    ##   - myRegistryKeySecretName
    ##
    pullSecrets: []
  ## @param sysctl.command Override default init-sysctl container command (useful when using custom images)
  ##
  command: []
  ## @param sysctl.mountHostSys Mount the host `/sys` folder to `/host-sys`
  ##
  mountHostSys: false
  ## Init container's resource requests and limits
  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
  ## @param sysctl.resources.limits The resources limits for the init container
  ## @param sysctl.resources.requests The requested resources for the init container
  ##
  resources:
    limits: {}
    requests: {}
  • configuration 1: select cluster mode

According to bitnami/redis official document , the installation mode is divided into Master-Replicas (primary copy) and Standalone (independent), here we can use the default master copy mode.

image.png

  • Configuration 2: Select Service Type

Bitnami/redis uses clusterIP mode by default. We choose NodePort. Why use NodePort instead of clusterIP or LoadBalance? Because our local development environment needs to be accessed by ip and we do not need load balancing (actually it costs too much), and clusterIP does not support external access, so we choose NodePort mode for both master and replica.

master:
  service:
    type: NodePort
replica:
  service:
    type: NodePort
  • configuration three: select StorageClass

Because we are using Alibaba Cloud, we can only use Alibaba Cloud storage here. In addition, Alibaba Cloud storage is divided into cloud disk, NAS, OSS, etc. Because the minimum cloud disk is 20Gi, we can't use such a big one, so we use NAS That's it, and the NAS service needs to be how to create a StorageClass for Cloud NAS earlier. 161e689b1cd5f9, refer to the above to create a StorageClass named alicloud-nas-fs, so that the system It will automatically create a PV (storage volume) dynamically through the PVC (storage volume declaration) binding and selecting the StorageClass.

  • configuration four (optional): configuration password

Here you can choose the password you want, or you can wait for the password to be automatically generated after it is created.

auth:
  password: xxxxx

After the configuration is complete, the complete values.yaml file looks like this:

values.yaml

auth:
  password: xxxxx
master:
  service:
    type: NodePort
  persistence:
    storageClass: "alicloud-nas-fs"
    size: 8Gi
replica:
  service:
    type: NodePort
  persistence:
    storageClass: "alicloud-nas-fs"
    size: 8Gi

Next, let's create a redis cluster with the following helm command,

$ kubectl create namespace redis
$ helm install -f values.yaml test-redis bitnami/redis --namespace redis

After the creation is successful, there will be the following output,

NAME: test-redis
LAST DEPLOYED: Sat Jul 17 21:56:12 2021
NAMESPACE: redis
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
** Please be patient while the chart is being deployed **

Redis(TM) can be accessed on the following DNS names from within your cluster:

    test-redis-master.redis.svc.cluster.local for read/write operations (port 6379)
    test-redis-replicas.redis.svc.cluster.local for read-only operations (port 6379)



To get your password run:

    export REDIS_PASSWORD=$(kubectl get secret --namespace redis test-redis -o jsonpath="{.data.redis-password}" | base64 --decode)

To connect to your Redis(TM) server:

1. Run a Redis(TM) pod that you can use as a client:

   kubectl run --namespace redis redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity

   Use the following command to attach to the pod:

   kubectl exec --tty -i redis-client \
   --namespace redis -- bash

2. Connect using the Redis(TM) CLI:
   redis-cli -h test-redis-master -a $REDIS_PASSWORD
   redis-cli -h test-redis-replicas -a $REDIS_PASSWORD

To connect to your database from outside the cluster execute the following commands:

    export NODE_IP=$(kubectl get nodes --namespace redis -o jsonpath="{.items[0].status.addresses[0].address}")
    export NODE_PORT=$(kubectl get --namespace redis -o jsonpath="{.spec.ports[0].nodePort}" services test-redis-master)
    redis-cli -h $NODE_IP -p $NODE_PORT -a $REDIS_PASSWORD

Waiting for the creation of the redis cluster, we can also check whether the creation is successful through the command:

$ kubectl get all -n redis
NAME                        READY   STATUS    RESTARTS   AGE
pod/test-redis-master-0     1/1     Running   0          24h
pod/test-redis-replicas-0   1/1     Running   1          24h
pod/test-redis-replicas-1   1/1     Running   0          24h
pod/test-redis-replicas-2   1/1     Running   0          23h

NAME                          TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGE
service/test-redis-headless   ClusterIP   None           <none>        6379/TCP         24h
service/test-redis-master     NodePort    172.21.0.201   <none>        6379:30676/TCP   24h
service/test-redis-replicas   NodePort    172.21.6.241   <none>        6379:32112/TCP   24h

NAME                                   READY   AGE
statefulset.apps/test-redis-master
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