Percona Monitoring and Management监控MySQL性能

wholegale39

前言

  • Percona Monitoring and Management (PMM)是一款开源的专用于管理和监控MySQL、MongoDB、PostgreSQL、ProxySQL、AWS RDS性能的开源平台,并且可以监控前述这些数据库所在的服务器资源,通过PMM客户端收集到的DB监控数据用第三方软件Grafana画图展示出来。
  • 通过PMM,可以获得以下信息
1、广泛的可视化系统性能指标
2、收集并分析复杂的多系统拓扑结构的数据
3、深入发现效率低下原因,预测性能问题,或解决现有问题
4、注意潜在的安全问题并补救他们

PMM简介

PMM Server架构

PMM Server

  • Query Analytics (QAN) 可以在时间段内分析MySQL查询性能,除了客户端QAN代理外,它还包括以下内容

    • QAN API是用于存储和访问由在PMM客户端上运行的QAN代理收集的查询数据的后端.
    • QAN Web App应用程序是一个用于可视化收集的查询分析数据的Web应用程序.
  • Metrics Monitor 提供对MySQL或MongoDB Server实例至关重要的指标的历史视图,它包括以下内容:

    • VictoriaMetrics, 时序型数据库. (Replaced Prometheus in PMM 2.12.0.)
    • ClickHouse 是第三方列式存储数据库,方便查询分析功能.
    • Grafana 是一款用Go语言开发的开源数据可视化工具,可以做数据监控和数据统计,带有告警功能.
    • Percona Dashboards 是我们开发的Grafana的一组仪表板.

PMM Client架构

PMM Client

  • pmm-admin 是用于管理PMM客户端的命令行工具,例如,添加和删除要监视的数据库实例. (Read more.
  • pmm-agent 是一个客户端组件,是一个最小的命令行界面,它是带来客户端功能的中央入口点:它携带客户的身份验证,获取存储在PMM服务器上的客户端配置,管理性能数据收集器和其他代理.
  • node_exporter 服务器性能数据收集器.
  • mysqld_exporter MySQL性能数据收集器.
  • mongodb_exporter MongoDB性能数据收集器.
  • postgres_exporter PostgreSQL性能数据收集器.
  • proxysql_exporter ProxySQL 性能数据收集器.
  • rds_exporter Amazon RDS性能数据收集器.
  • azure_database_exporter Azure database性能数据收集器.

安装部署

PMM Server

  • 创建docker-compose_prometheus_grafana.yml配置文件
cd /opt/docker-compose
touch docker-compose_pmm-server.yml
  • 编辑docker-compose_pmm-server.yml文件并键入
services:
  pmm-server:
    image: percona/pmm-server:2
    hostname: pmm-server
    container_name: pmm-server
    restart: always
    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "5"
    ports:
      - "443:443"
    volumes:
      - data:/srv
volumes:
  data:
With this approach, data is stored in a volume, not in a pmm-data container.
  • 查看数据卷
docker volume ls

local               pmm-server_data
  • 如果存在垃圾数据,可以尝试以下命令进行清除
docker stop pmm-server

docker rm pmm-server
docker inspect pmm-server_data
[
    {
        "CreatedAt": "2021-05-28T16:16:15+08:00",
        "Driver": "local",
        "Labels": {
            "com.docker.compose.project": "pmm-server",
            "com.docker.compose.version": "1.29.2",
            "com.docker.compose.volume": "data"
        },
        "Mountpoint": "/var/lib/docker/volumes/pmm-server_data/_data",
        "Name": "pmm-server_data",
        "Options": null,
        "Scope": "local"
    }
]
docker volume rm -f pmm-server_data
  • 或者使用以下方式将数据存储在 pmm-data container内
version: '2'
# version 2 of docker-compose is not "old" version, it's the actual version,
# see below for explanation:
# https://stackoverflow.com/a/53636006/961092
services:
    # Percona Monitoring and Management server
    pmm-data:
        image: percona/pmm-server:2
        container_name: pmm-data
        hostname: pmm-data
        volumes:
            - /srv
        entrypoint: /bin/true

    pmm-server:
        image: percona/pmm-server:2
        hostname: pmm-server
        container_name: pmm-server
        restart: always


        # logging settings limit used disk space
        logging:
            driver: json-file
            options:
                max-size: "10m"
                max-file: "5"

        ports:
            - "443:443"
        # uncomment expose section in order to proxy requests through another container instead of
        # accessing the container directly
        # expose:
        #     - "443"

        volumes_from:
            - pmm-data
  • docker-compose运行docker容器
docker-compose -p pmm-server -f docker-compose_pmm-server.yml up -d
docker volume lsDRIVER              VOLUME NAMElocal               f9ed9b5237aecec9ee6c3afce336161582d4d5f79e3dbcc09dca80d78c18ac22

通过以下命令访问pmm-server命令查看pmm-server状态信息

docker exec pmm-server pmm-admin status
  • 成功后会出现以下信息
Agent ID: pmm-serverNode ID : pmm-serverPMM Server:        URL    : https://127.0.0.1:443/        Version: 2.17.0PMM Client:        Connected        : true        Time drift       : 56.117µs        Latency          : 428.232µs        pmm-admin version: 2.17.0        pmm-agent version: 2.17.0Agents:        /agent_id/6a7e8dcb-8aa8-4b65-8447-ff8284904348 postgresql_pgstatements_agent Running        /agent_id/92688359-7668-47f5-9a93-eaf46ba9cf22 node_exporter Running        /agent_id/a223620e-7a16-43ee-bf63-bd1dbe33ba01 postgres_exporter Running
  • 启动成功通过浏览器443端口访问pmm-server服务

pmm-server

  • 修改admin密码为pmm-reporter

PMM Client

  • 创建docker-compose.yml配置文件
cd /opt/docker-compose/pmm-clienttouch docker-compose.yml
  • 编辑docker-compose.yml文件并键入,Use unique hostnames across all PMM Clients
version: '2'services:  pmm-client:    image: percona/pmm-client:2    hostname: pmm-client-myhost    container_name: pmm-client    restart: always    ports:      - "42000:42000"      - "42001:42001"    logging:      driver: json-file      options:        max-size: "10m"        max-file: "5"    volumes:      - ./pmm-agent.yaml:/etc/pmm-agent.yaml      - pmm-client-data:/srv    environment:      - PMM_AGENT_CONFIG_FILE=/etc/pmm-agent.yaml     entrypoint: pmm-agent setup --server-insecure-tls --server-address=192.168.9.140:443 --server-username=admin --server-password=pmm-reportervolumes:  pmm-client-data:
  • 生成配置文件
cd /opt/docker-compose/pmm-clienttouch pmm-agent.yaml && chmod 0666 pmm-agent.yamlwith mode 0666 so container user will be able to write to it
  • 使用以下命令启动后会立即停下,并自动映射当前目录下pmm-agent.yaml
docker-compose up pmm-client
Creating volume "pmm-client_pmm-client-data" with default driverCreating pmm-client ... doneAttaching to pmm-clientpmm-client    | INFO[2021-05-28T11:51:35.526+00:00] Loading configuration file /etc/pmm-agent.yaml.  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/node_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/mysqld_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/mongodb_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/postgres_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/proxysql_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/rds_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/azure_exporter  component=setuppmm-client    | INFO[2021-05-28T11:51:35.542+00:00] Using /usr/local/percona/pmm2/exporters/vmagent  component=setuppmm-client    | Checking local pmm-agent status...pmm-client    | pmm-agent is not running.pmm-client    | Registering pmm-agent on PMM Server...pmm-client    | Registered.pmm-client    | Configuration file /etc/pmm-agent.yaml updated.pmm-client    | Please start pmm-agent: `pmm-agent --config-file=/etc/pmm-agent.yaml`.

查看pmm-agent.yml配置信息

# Updated by `pmm-agent setup`.---id: /agent_id/0c514bcf-41ac-4de8-9d2c-57cb4b8523bflisten-address: 127.0.0.1listen-port: 7777server:    address: 192.168.9.1xx:443    username: admin    password: pmm-reporter    insecure-tls: truepaths:    exporters_base: /usr/local/percona/pmm2/exporters    node_exporter: /usr/local/percona/pmm2/exporters/node_exporter    mysqld_exporter: /usr/local/percona/pmm2/exporters/mysqld_exporter    mongodb_exporter: /usr/local/percona/pmm2/exporters/mongodb_exporter    postgres_exporter: /usr/local/percona/pmm2/exporters/postgres_exporter    proxysql_exporter: /usr/local/percona/pmm2/exporters/proxysql_exporter    rds_exporter: /usr/local/percona/pmm2/exporters/rds_exporter    azure_exporter: /usr/local/percona/pmm2/exporters/azure_exporter    vmagent: /usr/local/percona/pmm2/exporters/vmagent    tempdir: /tmp    pt_summary: /usr/local/percona/pmm2/tools/pt-summary    pt_pg_summary: /usr/local/percona/pmm2/tools/pt-pg-summary    pt_mysql_summary: /usr/local/percona/pmm2/tools/pt-mysql-summary    pt_mongodb_summary: /usr/local/percona/pmm2/tools/pt-mongodb-summaryports:    min: 42000    max: 51999debug: falsetrace: false
  • docker-compose.yml配置文件entrypoint信息注释掉,如下
#     entrypoint: pmm-agent setup --server-insecure-tls --server-address=192.168.9.140:443 --server-username=admin --server-password=pmm-reporter
  • docker-compose运行docker容器
docker-compose -p pmm-client -f docker-compose.yml up -dRecreating pmm-client ... done
  • 通过以下命令访问pmm-client命令查看pmm-client状态信息
docker exec pmm-client pmm-admin status
  • 成功后会出现以下信息
Agent ID: /agent_id/0c514bcf-41ac-4de8-9d2c-57cb4b8523bfNode ID : /node_id/8d7cb9d5-c407-4c87-ba0f-ee28e68d2725PMM Server:        URL    : https://192.168.9.140:443/        Version: 2.17.0PMM Client:        Connected        : true        Time drift       : 81.61µs        Latency          : 585.095µs        pmm-admin version: 2.16.0-release-2.16-ebcf4316        pmm-agent version: 2.16.0-release-2.16-ebcf4316Agents:        /agent_id/50269d19-7663-4650-8c66-48356ce2ccde vmagent Running        /agent_id/5a86413f-0c1b-4312-aac0-99f6f1a07ecc node_exporter Running
  • 服务启动成功后会自动注册node节点
docker exec pmm-client pmm-admin list
Service type   Service name   Address and port  Service IDAgent type     Status         Metrics Mode      Agent ID                                       Service IDpmm_agent      Connected                        /agent_id/0c514bcf-41ac-4de8-9d2c-57cb4b8523bf node_exporter  Running        push              /agent_id/5a86413f-0c1b-4312-aac0-99f6f1a07ecc vmagent        Running        push              /agent_id/50269d19-7663-4650-8c66-48356ce2ccde
  • 如图所示

Home-Dashboard

  • pmm-server、pmm-client在同一台服务器上,目前pmm-client还未添加数据库service

pmm-client-myhost

注册Client

当pmm-client与pmm-server服务在同一台机器上,pmm-client服务启动成功后,会自动执行注册Client。

如果非同一台机器,则需要手动执行注册Client。

  • 向pmm-server注册pmm-client节点
docker exec pmm-client pmm-admin config --server-insecure-tls --server-url=https://admin:pmm-exporter@192.168.9.1xx:443 192.168.9.1xx generic pmm-client-myhost
  • 注册成功提示以下信息
Checking local pmm-agent status...pmm-agent is running.Registering pmm-agent on PMM Server...Registered.Configuration file /etc/pmm-agent.yaml updated.Reloading pmm-agent configuration...Configuration reloaded.Checking local pmm-agent status...pmm-agent is running.

监控数据库

  • 首次使用先检查一下,确认是没有mysql类型的service
docker exec pmm-client pmm-admin inventory list services --service-type=mysql
Services list.Service type           Service name         Address and Port  Service ID
  • 创建并授权数据库用户
CREATE USER 'pmm'@'localhost' IDENTIFIED BY 'pmm-client' WITH MAX_USER_CONNECTIONS 10;GRANT SELECT, PROCESS, SUPER, REPLICATION CLIENT, RELOAD ON *.* TO 'pmm'@'localhost';FLUSH PRIVILEGES;
  • 确保mysql数据库中PERFORMANCE_SCHEMA参数值处于开启状态
MySQL 5.5开始新增一个数据库:PERFORMANCE_SCHEMA,主要用于收集数据库服务器性能参数,5.5版本默认关闭,5.6版本默认开启。
root@localhost 14:43:  [(none)]>SHOW VARIABLES LIKE 'performance_schema';+--------------------+-------+| Variable_name      | Value |+--------------------+-------+| performance_schema | ON    |+--------------------+-------+1 row in set (0.00 sec)
  • Data source recommendations

    Database serverVersionsRecommended source
    MySQL5.1-5.5Slow query log
    MySQL5.6+Performance Schema
    MariaDB10.0+Performance Schema
    Percona Server for MySQL5.7, 8.0Slow query log
    Percona XtraDB Cluster5.6, 5.7, 8.0Slow query log
  • 将pmm-client节点中的mysql数据库service添加至pmm-server
docker exec pmm-client pmm-admin add mysql --query-source=perfschema --username=pmm --password=pmm-client pmm-client-myhost 192.168.9.1xx:3306
MySQL Service added.Service ID  : /service_id/5baab9a7-1e3a-441e-8d9e-27ff7b5b5da8Service name: pmm-client-myhostTable statistics collection enabled (the limit is 1000, the actual table count is 476).
  • 浏览器页面开始展示mysql相关信息

mysql

  • 再次查询已经存在mysql类型的service
docker exec pmm-client pmm-admin inventory list services --service-type=mysqlServices list.Service type    Service name         Address and Port  Service IDMySQL           pmm-client-myhost    192.168.9.1xx:3306 /service_id/5baab9a7-1e3a-441e-8d9e-27ff7b5b5da8
  • 当然也可以移除数据库services
docker exec pmm-client pmm-admin remove <service-type> <service-name><service-type>:mysql,mongodb,postgresql,proxysql,haproxy,externaldocker exec pmm-client pmm-admin remove mysql pmm-client-myhost

具体使用

  • Nodes OverView概览信息展示

Nodes OverView

  • Nodes分类详细信息

Nodes分类详细信息

  • MySQL Instances Overview概览信息

MySQL Instances Overview

  • MySQL Performance Schema Details

MySQL Performance Schema Details

参考文档

https://www.percona.com/softw...

https://www.percona.com/doc/p...

https://www.percona.com/doc/p...

https://www.percona.com/doc/p...

https://gist.github.com/paska...

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