代码文件
[root@Optimus /]# cd docker-training/
[root@Optimus docker-training]# ls
centos7 mysql php-fpm README.md wordpress
[root@Optimus docker-training]# cd wordpress/
[root@Optimus wordpress]# ls
Dockerfile init.sh readme.html wp-admin wp-comments-post.php wp-content wp-includes wp-load.php wp-mail.php wp-signup.php xmlrpc.php
index.php license.txt wp-activate.php wp-blog-header.php wp-config-sample.php wp-cron.php wp-links-opml.php wp-login.php wp-settings.php wp-trackback.php
[root@Optimus wordpress]#
其中，除了dockerfile和init.sh，都是项目代码文件。推荐把dockerfile放在该目录下。
查看dockerfile
from csphere/php-fpm:5.4
add init.sh /init.sh
entrypoint ["/init.sh", "/usr/bin/supervisord", "-n", "-c", "/etc/supervisord.conf"]
代码文件已经了，只需要能解析运行PHP的环境和webserver的镜像。
在/php-fpm/Dockerfile文件中，最后两行代码是onbuild，会在构建WordPress的时候生效。添加所有文件到/app目录下。
ONBUILD ADD . /app
ONBUILD RUN chown -R nginx:nginx /app文件目录如下
[root@Optimus wordpress]# ls
Dockerfile init.sh readme.html wp-admin wp-comments-post.php wp-content wp-includes wp-load.php wp-mail.php wp-signup.php xmlrpc.php
index.php license.txt wp-activate.php wp-blog-header.php wp-config-sample.php wp-cron.php wp-links-opml.php wp-login.php wp-settings.php wp-trackback.php
[root@Optimus wordpress]# 其中Dockerfile不必要添加到/app目录下，只要copy其他的代码文件即可。
查看当前目录下所有文件
[root@Optimus wordpress]# ls -a
. Dockerfile index.php license.txt wp-activate.php wp-blog-header.php wp-config-sample.php wp-cron.php wp-links-opml.php wp-login.php wp-settings.php wp-trackback.php
.. .dockerignore init.sh readme.html wp-admin wp-comments-post.php wp-content wp-includes wp-load.php wp-mail.php wp-signup.php xmlrpc.php
[root@Optimus wordpress]# .dockerignore文件内容
[root@Optimus wordpress]# cat .dockerignore
Dockerfile
只有一句dockerfile，代表着除了dockerfile文件，其他文件都会copy到/app目录下。
WordPress的dockerfile
[root@Optimus wordpress]# cat Dockerfile
from csphere/php-fpm:5.4
add init.sh /init.sh
entrypoint ["/init.sh", "/usr/bin/supervisord", "-n", "-c", "/etc/supervisord.conf"]
[root@Optimus wordpress]# from执行完毕后，就会执行onbuild去添加代码文件到/app，然后才会执行add命令。先添加文件，后执行init.sh脚本。
在执行WordPress entrypoint命令时，先执行init.sh脚本，再启动supervisor。这里启动supervisor，相当于启动了Nginx和php-fpm，因为在php-fpm这个镜像下，supervisor.conf.d目录下只有Nginx和php-fpm的启动文件。
entrypoint ["/init.sh", "/usr/bin/supervisord", "-n", "-c", "/etc/supervisord.conf"]
构建WordPress镜像
dockerfile不在当前目录下，构建镜像
[root@Optimus /]# docker build -t csphere/wordpress:4.2 ./docker-training/wordpress/
Sending build context to Docker daemon 19.8 MB
Sending build context to Docker daemon
Step 0 : FROM csphere/php-fpm:5.4
# Executing 2 build triggers
Trigger 0, ADD . /app
Step 0 : ADD . /app
Trigger 1, RUN chown -R nginx:nginx /app
Step 0 : RUN chown -R nginx:nginx /app
---> Running in 5884fc6d3da5
---> cac915ee5a8f
Removing intermediate container dc55f73b6381
Removing intermediate container 5884fc6d3da5
Step 1 : ADD init.sh /init.sh
---> da14e3eab628
Removing intermediate container e03e077ee0ad
Step 2 : ENTRYPOINT /init.sh /usr/bin/supervisord -n -c /etc/supervisord.conf
---> Running in 87d28377c3ea
---> 6d90342cc99d
Removing intermediate container 87d28377c3ea
Successfully built 6d90342cc99d
[root@Optimus /]#
查看镜像
[root@Optimus /]# docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
csphere/wordpress 4.2 6d90342cc99d About a minute ago 747.3 MB
csphere/mysql 5.5 e147ac2a588e 3 days ago 752.7 MB
csphere/php-fpm 5.4 1b08c94ce801 5 days ago 709.7 MB
csphere/centos 7.1 fd1f7619e63e 6 days ago 613 MB
centos centos7.1.1503 879c6d07c60e 6 weeks ago 212.1 MB
[root@Optimus /]#
已经有了DB、php-fpm，现在构建一个应用镜像，并连接DB container。
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 16 hours ago Up 16 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 5 days ago Up 5 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 6 days ago Up 6 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 7 days ago Exited (127) 7 days ago naughty_engelbart
[root@Optimus /]#
查看当前主机的内网网卡的主机地址（服务器的内部IP地址）
[root@Optimus /]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:1E:67:4E:3D:7B
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Memory:d0960000-d097ffff
[root@Optimus /]# （我的主机在eth0下没有IP地址，查看其它的网卡eth1）
[root@Optimus /]# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:1E:67:4E:3D:7C
inet addr:10.10.4.182 Bcast:10.10.4.255 Mask:255.255.255.0
inet6 addr: fe80::21e:67ff:fe4e:3d7c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:224369799 errors:0 dropped:0 overruns:0 frame:0
TX packets:78309983 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:42464926703 (39.5 GiB) TX bytes:107190159141 (99.8 GiB)
Memory:d0940000-d095ffff
运行docker WordPress
docker run -d -p 80:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
-e 可以传入环境变量给container。在inut,sh文件中有三个参数需要传给container。
WORDPRESS_DB_HOST=连哪台数据库。
端口映射为3306端口不需要改。
-e可以使用多次。-p可以使用多次。-d不可以使用多次。
WORDPRESS_DB_USER=admin
WOREDPRESS_DB_PASSWORD=csphere2015
指定镜像 csphere/wordpress:4.2
绑定80端口出错。想重新端口映射，名字冲突。删除container，重新端口映射，8080和8000均不成功。最后用9090做端口映射。
[root@Optimus /]# docker run -d -p 80:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
f0bf3b9ecdf026b06bd79cdcf364354eab8760a7d2ee5fdd5fb715f997a7a649
Error response from daemon: Cannot start container f0bf3b9ecdf026b06bd79cdcf364354eab8760a7d2ee5fdd5fb715f997a7a649: Error starting userland proxy: listen tcp 0.0.0.0:80: bind: address already in use
[root@Optimus /]# docker run -d -p 8080:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
Error response from daemon: Conflict. The name "wordpress" is already in use by container f0bf3b9ecdf0. You have to delete (or rename) that container to be able to reuse that name.
[root@Optimus /]# docker rm wordpress
wordpress
[root@Optimus /]# docker run -d -p 8080:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
2a9942d2ce32aa673d14563378d18b53970ede65b6599cb9880fe6d86010cc77
Error response from daemon: Cannot start container 2a9942d2ce32aa673d14563378d18b53970ede65b6599cb9880fe6d86010cc77: Bind for 0.0.0.0:8080 failed: port is already allocated
[root@Optimus /]# docker rm wordpress
wordpress
[root@Optimus /]# docker run -d -p 8000:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
85c51e130edc625c9c77040a8ba0c1f4dfcdbf419daec74f97cb3d9a385202f7
Error response from daemon: Cannot start container 85c51e130edc625c9c77040a8ba0c1f4dfcdbf419daec74f97cb3d9a385202f7: Error starting userland proxy: listen tcp 0.0.0.0:8000: bind: address already in use
[root@Optimus /]# docker rm wordpress
wordpress
[root@Optimus /]# docker run -d -p 9090:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
18e21a1d127f1f99f12d67a67ee8a26391f992d7e93fbd2c78d45235c475e74a
[root@Optimus /]# 查看容器
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
18e21a1d127f csphere/wordpress:4.2 "/init.sh /usr/bin/s 5 minutes ago Exited (1) 4 minutes ago wordpress
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 23 hours ago Up 23 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 6 days ago Up 6 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 7 days ago Up 7 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 8 days ago Exited (127) 8 days ago naughty_engelbart
显示exited，没有启动成功。删除WordPress，重启，查看容器，启动成功。
[root@Optimus /]# docker rm wordpress
wordpress
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 23 hours ago Up 23 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 6 days ago Up 6 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 7 days ago Up 7 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 8 days ago Exited (127) 8 days ago naughty_engelbart
[root@Optimus /]# docker run -d -p 9090:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
fcf40517154261e3b7768272d1c856df63f5703455ccd229d22ba57ab9656163
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fcf405171542 csphere/wordpress:4.2 "/init.sh /usr/bin/s 3 seconds ago Up 2 seconds 22/tcp, 443/tcp, 0.0.0.0:9090->80/tcp wordpress
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 23 hours ago Up 23 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 6 days ago Up 6 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 7 days ago Up 7 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 8 days ago Exited (127) 8 days ago naughty_engelbart
[root@Optimus /]#
使用80端口做映射，访问的时候可以不用加端口号访问。否则要加上端口号。
出错：成功启动过了几分钟，发现，又excited了。。
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fcf405171542 csphere/wordpress:4.2 "/init.sh /usr/bin/s 2 minutes ago Exited (1) 2 minutes ago wordpress
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 23 hours ago Up 23 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 6 days ago Up 6 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 7 days ago Up 7 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 8 days ago Exited (127) 8 days ago naughty_engelbart
[root@Optimus /]#
访问失败
查看出错日志
[root@Optimus wordpress]# docker logs -f wordpress
PHP Notice: Undefined offset: 1 in - on line 4
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.22' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.22' (using password: YES)
[root@Optimus wordpress]#
有人建议我，临时进入docker连接数据库，运行如下：
root@Optimus ~]# docker run -it wordpress bash
Unable to find image 'wordpress:latest' locally
latest: Pulling from wordpress
632d62e9ff45: Pulling fs layer
2309d29c605a: Pull complete
b5c24cf2be08: Pull complete
4b0489c8c5ad: Pull complete
0e18f8fbae80: Pull complete
ae8ee28d33fd: Pull complete
4e6bd1f11ffa: Pull complete
b150aee2f63a: Pull complete
bda04964adbb: Pull complete
765636a32409: Pull complete
9f39310817a4: Pull complete
d5965880f205: Pull complete
bc291240dd82: Pull complete
ed3c4a2166ea: Pull complete
7f9f8040b904: Pull complete
30d2ca86be32: Pull complete
9796545de9ab: Pull complete
96f8917e11d8: Pull complete
b3aebdc4c86d: Pull complete
dfc5c74517f4: Pull complete
b74ab8ff8171: Pull complete
f8f5b923aa4a: Pull complete
d336bb27db75: Pull complete
76d91343f4f9: Pull complete
640a07199820: Pull complete
5fb5a73259de: Pull complete
1ff113204b89: Pull complete
f0d30083f45e: Pull complete
95cf8f007a47: Pull complete
e54ef1de6066: Pull complete
4c985e73a00d: Pull complete
2b1f410ae0f1: Pull complete
f6e007144096: Pull complete
86b573b7bc9b: Pull complete
a1c0c746f816: Pull complete
df87483bb3b4: Pull complete
906569adf667: Pull complete
5bdd010bcd76: Pull complete
c9986e430552: Pull complete
b027afd30886: Pull complete
Digest: sha256:b277723a281b94d5d28058b346361704f84caa681ff45ccf89f68bf3ba96e788
Status: Downloaded newer image for wordpress:latest
root@de644e92ee52:/var/www/html#
shell命令没有指定镜像，系统找不到最新版本的WordPress镜像，pull了一个新的WordPress镜像，构建了容器，然后进入了这个容器。好像不对。
删除这个容器：
[root@Optimus ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
de644e92ee52 wordpress "docker-entrypoint.s 8 minutes ago Exited (0) 37 seconds ago mad_hodgkin
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 45 hours ago Up 45 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 7 days ago Up 7 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 8 days ago Up 8 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 9 days ago Exited (127) 9 days ago naughty_engelbart
[root@Optimus ~]# docker rm mad_hodgkin
mad_hodgkin
[root@Optimus ~]#
查看数据库用户
MariaDB [(none)]> select * from mysql.user;
| Host | User | Password | Select_priv | Insert_priv | Update_priv | Delete_priv | Create_priv | Drop_priv | Reload_priv | Shutdown_priv | Process_priv | File_priv | Grant_priv | References_priv | Index_priv | Alter_priv | Show_db_priv | Super_priv | Create_tmp_table_priv | Lock_tables_priv | Execute_priv | Repl_slave_priv | Repl_client_priv | Create_view_priv | Show_view_priv | Create_routine_priv | Alter_routine_priv | Create_user_priv | Event_priv | Trigger_priv | Create_tablespace_priv | ssl_type | ssl_cipher | x509_issuer | x509_subject | max_questions | max_updates | max_connections | max_user_connections | plugin | authentication_string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| localhost | root | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | 0 | 0 | 0 | 0 | |||||||
| 9ad32fb968fe | root | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | 0 | 0 | 0 | 0 | |||||||
| 127.0.0.1 | root | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | 0 | 0 | 0 | 0 | |||||||
| ::1 | root | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | 0 | 0 | 0 | 0 | |||||||
| localhost | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | 0 | 0 | 0 | 0 | ||||||||
| 9ad32fb968fe | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | 0 | 0 | 0 | 0 | ||||||||
| % | admin | *318BF8C339F1F04B052E3D1ED22C2B5873740C5A | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | 0 | 0 | 0 | 0 | ||||||
| localhost | admin | *318BF8C339F1F04B052E3D1ED22C2B5873740C5A | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | 0 | 0 | 0 | 0 | ||||||
| 127.0.0.1 | admin | *318BF8C339F1F04B052E3D1ED22C2B5873740C5A | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | 0 | 0 | 0 | 0 |
网卡信息
[root@Optimus centos7]# ifconfig
docker0 Link encap:Ethernet HWaddr 02:C4:0F:42:9D:A4
inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0
inet6 addr: fe80::ac31:7eff:fe21:61bb/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:98676 errors:0 dropped:0 overruns:0 frame:0
TX packets:148581 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4576610 (4.3 MiB) TX bytes:222704957 (212.3 MiB)
使用IP地址172.17.42.1构建容器
[root@Optimus /]# docker run -d -p 9090:80 --name wordpress -e WORDPRESS_DB_HOST=172.17.42.1 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
6a1942015dd23bbf6252f1a4836ada09ffb40a6e8f815480b22e31ab1f2847ed
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6a1942015dd2 csphere/wordpress:4.2 "/init.sh /usr/bin/s 6 seconds ago Up 3 seconds 22/tcp, 443/tcp, 0.0.0.0:9090->80/tcp wordpress
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 47 hours ago Up 47 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 7 days ago Up 7 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 8 days ago Up 8 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 9 days ago Exited (127) 9 days ago naughty_engelbart
[root@Optimus /]#
访问172.17.42.1:9090失败。
再次查看容器
[root@Optimus /]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6a1942015dd2 csphere/wordpress:4.2 "/init.sh /usr/bin/s 2 minutes ago Exited (1) About a minute ago wordpress
8e266cd27a63 csphere/mysql:5.5 "/scripts/start" 47 hours ago Up 47 hours 22/tcp, 0.0.0.0:3307->3306/tcp newdb
e274049db704 csphere/php-fpm:5.4 "/usr/bin/supervisor 7 days ago Up 7 days 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp website
2d36dbfc72a0 csphere/centos:7.1 "/usr/bin/supervisor 8 days ago Up 8 days 0.0.0.0:2222->22/tcp base
0d1f6225836b centos "/bin/bash" 9 days ago Exited (127) 9 days ago naughty_engelbart
[root@Optimus /]#
查看日志
[root@Optimus /]# docker logs -f wordpress
PHP Notice: Undefined offset: 1 in - on line 4
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
PHP Warning: mysqli::mysqli(): (28000/1045): Access denied for user 'admin'@'172.17.0.28' (using password: YES) in - on line 7
MySQL Connection Error: (1045) Access denied for user 'admin'@'172.17.0.28' (using password: YES)
[root@Optimus /]#
问题描述
通过docker run启动一个 WordPress 应用的 docker 容器时，显示启动成功为UP状态，但无法访问
WordPress 应用，并且几分钟后 container 的状态变为excited。
启动命令
docker run -d -p 9090:80 --name wordpress -e WORDPRESS_DB_HOST=10.10.4.182 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
网卡信息
[root@Optimus /]# ifconfig
docker0 Link encap:Ethernet HWaddr 02:C4:0F:42:9D:A4
inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0
inet6 addr: fe80::ac31:7eff:fe21:61bb/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:99200 errors:0 dropped:0 overruns:0 frame:0
TX packets:149257 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5452754 (5.2 MiB) TX bytes:222793983 (212.4 MiB)
eth0 Link encap:Ethernet HWaddr 00:1E:67:4E:3D:7B
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Memory:d0960000-d097ffff
eth1 Link encap:Ethernet HWaddr 00:1E:67:4E:3D:7C
inet addr:10.10.4.182 Bcast:10.10.4.255 Mask:255.255.255.0
inet6 addr: fe80::21e:67ff:fe4e:3d7c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:225323670 errors:0 dropped:0 overruns:0 frame:0
TX packets:78415571 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:42781224797 (39.8 GiB) TX bytes:107201976978 (99.8 GiB)
Memory:d0940000-d095ffff
背景补充
构建DB容器时，使用的端口映射为3307:3306.
解决方法
改为使用docker0网卡地址172.17.42.1，指定3307端口号。网页访问地址为eth1:9090,也就是10.10.4.182:9090.访问成功！
[root@Optimus /]# docker run -d -p 9090:80 --name wordpress -e WORDPRESS_DB_HOST=172.17.42.1:3307 -e WORDPRESS_DB_USER=admin -e WORDPRESS_DB_PASSWORD=csphere2015 csphere/wordpress:4.2
6472364a37f5db3cee78608a649b0a9772952343914212fa8125faa0bcdc4152
成功。
配置WordPress时，如果没有配置数据库以及数据库用户和密码时，在第一页需要填写连接哪个数据库、数据库服务器是哪台IP地址或者域名。这里已经设置好了，所以不需要再填写。
选择简体中文，点击继续.
用户名：admin
密码：admin
安装完成
登录
登录成功
访问WordPress主页
基础环境镜像+中间件镜像+WordPress的应用镜像
其中WordPress可以是自己的应用程序。
**粗体** _斜体_ [链接](http://example.com) `代码` - 列表 > 引用。你还可以使用@来通知其他用户。