【Docker實戰之入門】Dockerfile詳細分析：構建docker鏡像（4）構建動態網站WordPress
代碼文件php
[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，都是項目代碼文件。推薦把dockerfile放在該目錄下。html
查看dockerfilemysql
from csphere/php-fpm:5.4 add init.sh /init.sh entrypoint ["/init.sh", "/usr/bin/supervisord", "-n", "-c", "/etc/supervisord.conf"]
代碼文件已經了，只須要能解析運行PHP的環境和webserver的鏡像。
在/php-fpm/Dockerfile文件中，最後兩行代碼是onbuild，會在構建WordPress的時候生效。添加全部文件到/app目錄下。nginx
ONBUILD ADD . /app ONBUILD RUN chown -R nginx:nginx /app
文件目錄以下web
[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沒必要要添加到/app目錄下，只要copy其餘的代碼文件便可。sql
查看當前目錄下全部文件docker
[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文件內容shell
[root@Optimus wordpress]# cat .dockerignore Dockerfile 只有一句dockerfile，表明着除了dockerfile文件，其餘文件都會copy到/app目錄下。
WordPress的dockerfile數據庫
[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執行完畢後，就會執行onbuild去添加代碼文件到/app，而後纔會執行add命令。先添加文件，後執行init.sh腳本。segmentfault
在執行WordPress entrypoint命令時，先執行init.sh腳本，再啓動supervisor。這裏啓動supervisor，至關於啓動了Nginx和php-fpm，由於在php-fpm這個鏡像下，supervisor.conf.d目錄下只有Nginx和php-fpm的啓動文件。
entrypoint ["/init.sh", "/usr/bin/supervisord", "-n", "-c", "/etc/supervisord.conf"]
構建WordPress鏡像
dockerfile不在當前目錄下，構建鏡像
[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 /]#
查看鏡像
[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 /]#
已經有了DB、php-fpm，如今構建一個應用鏡像，並鏈接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 /]#
查看當前主機的內網網卡的主機地址（服務器的內部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 /]#
（個人主機在eth0下沒有IP地址，查看其它的網卡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
運行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 能夠傳入環境變量給container。在inut,sh文件中有三個參數須要傳給container。 WORDPRESS_DB_HOST=連哪臺數據庫。 端口映射爲3306端口不須要改。 -e可使用屢次。-p可使用屢次。-d不可使用屢次。 WORDPRESS_DB_USER=admin WOREDPRESS_DB_PASSWORD=csphere2015 指定鏡像 csphere/wordpress:4.2
綁定80端口出錯。想從新端口映射，名字衝突。刪除container，從新端口映射，8080和8000均不成功。最後用9090作端口映射。
[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
顯示exited，沒有啓動成功。刪除WordPress，重啓，查看容器，啓動成功。
[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端口作映射，訪問的時候能夠不用加端口號訪問。不然要加上端口號。
出錯：成功啓動過了幾分鐘，發現，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 /]#
訪問失敗
查看出錯日誌
[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]#
有人建議我，臨時進入docker鏈接數據庫，運行以下：
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命令沒有指定鏡像，系統找不到最新版本的WordPress鏡像，pull了一個新的WordPress鏡像，構建了容器，而後進入了這個容器。好像不對。
刪除這個容器：
[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 ~]#
查看數據庫用戶
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 |
網卡信息
[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構建容器
[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 /]#
訪問172.17.42.1:9090失敗。
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 /]#
查看日誌
[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 /]#
問題描述
經過docker run啓動一個 WordPress 應用的 docker 容器時，顯示啓動成功爲UP狀態，但沒法訪問
WordPress 應用，而且幾分鐘後 container 的狀態變爲excited。
啓動命令
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
網卡信息
[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
背景補充
構建DB容器時，使用的端口映射爲3307:3306.
解決方法
改成使用docker0網卡地址172.17.42.1，指定3307端口號。網頁訪問地址爲eth1:9090,也就是10.10.4.182:9090.訪問成功！
[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時，若是沒有配置數據庫以及數據庫用戶和密碼時，在第一頁須要填寫鏈接哪一個數據庫、數據庫服務器是哪臺IP地址或者域名。這裏已經設置好了，因此不須要再填寫。
選擇簡體中文，點擊繼續.
用戶名：admin
密碼：admin
安裝完成
登陸
登陸成功
訪問WordPress主頁
基礎環境鏡像+中間件鏡像+WordPress的應用鏡像其中WordPress能夠是本身的應用程序。
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