Docker容器与虚拟化技术：Dockerfile部署LNMP

目录

一、理论

1.LNMP架构

2.背景

3.Dockerfile部署LNMP

3.构建Nginx镜像

4.构建MySQL容器

5.构建PHP镜像

6.启动 wordpress 服务 

二、实验

 1.环境准备

2.构建Nginx镜像

3.构建MySQL容器

4.构建PHP镜像

5.启动 wordpress 服务 

三、问题

1.构建nginx镜像报错

2.构建php镜像报错

2.生成PHP镜像一直为Exited状态

3.wordpress页面无法跳转

4.如何将运行中的 docker容器保存为 docker 镜像并保存到本地tar包

 四、总结

---

 

 

 

 

一、理论

1.LNMP架构

（1）架构

搭建一个lnmp环境，需要涉及到两个目录结构。一个是Dockerfile配置的目录结构，另一个是最终lnmp运行的目录结构。Dockerfile配置目录主要存放Dockerfile构建脚本和一些配置文件，lnmp运行目录主要存放程序运行产生的一些数据，比如mysql数据等。
以下是此次Dockerfile配置的目录结构，包括了nginx、php、mysql的配置文件。
 

lnmp
	- nginx
		- Dockerfile
		- nginx.conf
		- sites-enabled
			- default.conf
			...
	- php
		- Dockerfile
		- php.ini
		- php-fpm.conf
		- www.conf
	- mysql
		- Dockerfile
		- mysqld.cnf

 

 

2.背景

（1）项目环境

公司在实际的生产环境中，需要使用 Docker 技术在一台主机上创建 LNMP 服务并运行 Wordpress 网站平台。然后对此服务进行相关的性能调优和管理工作。

（2）所有安装包下载

nginx:

nginx：下载

MySQL:

MySQL ：： MySQL 下载

PHP:

PHP： 下载

 

（3）任务需求
使用 Docker 构建 LNMP 环境并运行 Wordpress 网站平台
限制 Nginx 容器最多使用 500MB 的内存和 1G 的 Swap
限制 Mysql 容器写 /dev/sda 的速率为 10 MB/s
将所有容器进行快照，然后将 Docker 镜像打包成 tar 包备份到本地

 

3.Dockerfile部署LNMP

（1）关闭防火墙

systemctl stop firewalld 
systemctl disable firewalld
setenforce 0

先自定义网络，再使用指定IP运行docker

是LNMP各组件处于同一网段

docker network create --subnet=172.20.0.0/16 --opt "com.docker.network.bridge.name"="docker1" mynetwork

Docker各组件的ip为：

容器	操作系统	IP地址	主要软件
nginx	CentOS 7	172.20.0.10	Docker-Nginx
mysql	CentOS 7	172.20.0.20	Docker-Mysql
php	CentOS 7	172.20.0.30	Docker-php

 

 此实验所需的软件有：

mysql-boost-5.7.20.tar.gz
nginx-1.12.0.tar.gz
php-7.1.10.tar.bz2
wordpress-4.9.4-zh_CN.tar.gz

检测网络：

[root@localhost nginx]# docker network ls
NETWORK ID     NAME        DRIVER    SCOPE
67e4b5a96733   bridge      bridge    local
f0c0eb06bea1   host        host      local
74f81b65c02c   mynetwork   bridge    local
f20ccdc6d825   none        null      local
[root@localhost nginx]# ifconfig
docker0: flags=4099  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::42:58ff:fe04:a8bd  prefixlen 64  scopeid 0x20
        ether 02:42:58:04:a8:bd  txqueuelen 0  (Ethernet)
        RX packets 15632  bytes 631663 (616.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 23932  bytes 92428320 (88.1 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker1: flags=4163  mtu 1500
        inet 172.20.0.1  netmask 255.255.0.0  broadcast 172.20.255.255
        inet6 fe80::42:47ff:fe2b:be52  prefixlen 64  scopeid 0x20
        ether 02:42:47:2b:be:52  txqueuelen 0  (Ethernet)
        RX packets 7  bytes 1189 (1.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 22  bytes 2393 (2.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 

3.构建Nginx镜像

(1) 创建nginx的工作目录

mkdir /opt/nginx
cd /opt/nginx/

(2) 上传 nginx-1.12.0.tar.gz、wordpress-4.9.4-zh_CN.tar.gz 到 /opt/nginx/ 目录中

[root@localhost nginx]# rz -E
rz waiting to receive.
[root@localhost nginx]# ls
Dockerfile  nginx-1.12.0.tar.gz  nginx.conf  run.sh  wordpress-4.9.4-zh_CN.tar.gz

(3)编辑Dockerfile配置文件

vim Dockerfile

FROM centos:7
MAINTAINER this is nginx image 
RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make;useradd -M -s /sbin/nologin nginx
ADD nginx-1.12.0.tar.gz /usr/local/src/
WORKDIR /usr/local/src/nginx-1.12.0
RUN ./configure \
--prefix=/usr/local/nginx \
--user=nginx \
--group=nginx \
--with-http_stub_status_module;make -j 4 && make install
ENV PATH /usr/local/nginx/sbin:$PATH
ADD nginx.conf /usr/local/nginx/conf/
ADD wordpress-4.9.4-zh_CN.tar.gz /usr/local/nginx/html
RUN chmod 777 -R /usr/local/nginx/html/
EXPOSE 80
VOLUME [ "/usr/local/nginx/html/" ]
CMD [ "/usr/local/nginx/sbin/nginx","-g","daemon off;" ]

(4) 准备Dockerfile文件中所需要的其他配置文件

vim nginx.conf

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    server {
        listen       80;
        server_name  localhost;
        charset utf-8;
        location / {
            root   html;
            index  index.html index.php;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
        location ~ \.php$ {
            root           html;
            fastcgi_pass   172.20.0.30:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /usr/local/nginx/html$fastcgi_script_name;
            include        fastcgi_params;
        }
    }
}

(5) 构建nginx镜像

docker build -t nginx:lnmp .

(6) 启动Nginx容器

docker run -d --name nginx -p 80:80 -m 500m --memory-swap 1g --net mynetwork --ip 172.20.0.10 nginx:lnmp

（7）查看

docker inspect nginx
 "Networks": {
                "mynetwork": {
                    "IPAMConfig": {
                        "IPv4Address": "172.20.0.10"

（8）验证nginx

curl http://192.168.204.140:80

 

4.构建MySQL容器

(1) 创建MySQL工作目录

mkdir /opt/mysqld
cd /opt/mysqld

(2) 上传 mysql-boost-5.7.20.tar.gz 到 /opt/mysqld 目录中

[root@localhost mysql]# rz -E
rz waiting to receive.
[root@localhost mysql]# ls
mysql-boost-5.7.20.tar.gz

(3) 编辑Dockerfile文件

 vim Dockerfile 

FROM centos:7
MAINTAINER this is mysql image 
RUN yum -y install ncurses ncurses-devel bison cmake pcre-devel zlib-devel gcc gcc-c++ make;useradd -M -s /sbin/nologin mysql
ADD mysql-boost-5.7.20.tar.gz /usr/local/src/
WORKDIR /usr/local/src/mysql-5.7.20/
RUN cmake \
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \
-DSYSCONFDIR=/etc \
-DSYSTEMD_PID_DIR=/usr/local/mysql \
-DDEFAULT_CHARSET=utf8  \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EXTRA_CHARSETS=all \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_ARCHIVE_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
-DMYSQL_DATADIR=/usr/local/mysql/data \
-DWITH_BOOST=boost \
-DWITH_SYSTEMD=1;make -j4;make install
ADD my.cnf /etc/my.cnf
EXPOSE 3306
RUN chown -R mysql:mysql /usr/local/mysql/;chown mysql:mysql /etc/my.cnf
WORKDIR /usr/local/mysql/bin/
RUN ./mysqld \
--initialize-insecure \
--user=mysql \
--basedir=/usr/local/mysql \
--datadir=/usr/local/mysql/data;cp /usr/local/mysql/usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/;systemctl enable mysqld
ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH
VOLUME [ "/usr/local/mysql" ]
CMD ["/usr/sbin/init"]

(4)编辑mysql的配置文件

vim my.cnf

[client]
port = 3306
socket=/usr/local/mysql/mysql.sock
 
[mysqld]
user = mysql
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
port = 3306
character-set-server=utf8
pid-file = /usr/local/mysql/mysqld.pid
socket=/usr/local/mysql/mysql.sock
bind-address = 0.0.0.0
skip-name-resolve
max_connections=2048
default-storage-engine=INNODB
max_allowed_packet=16M
server-id = 1
 
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES

(5)编辑MySQL的启动脚本

vim run.sh
 
#!/bin/bash
/usr/local/mysql/bin/mysqld
systemctl enable mysqld

(6)构建MySQL镜像

docker build -t mysql:lnmp .

(7)启动MySQL镜像

docker run --name=mysql -d --privileged --device-write-bps /dev/sda:10M -v /usr/local/mysql --net mynetwork --ip 172.20.0.20 mysql:lnmp

(8)验证 mysql 

[root@localhost mysql]# docker exec -it mysql bash
[root@75e85cb863da bin]# systemctl status mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: activating (start) since Fri 2023-08-18 06:15:20 UTC; 1min 54s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 99 ExecStart=/usr/local/mysql/bin/mysqld --daemonize --pid-file=/usr/local/mysql/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
  Process: 80 ExecStartPre=/usr/local/mysql/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
   CGroup: /docker/75e85cb863da16ddb6d557159d0a946fc2841da58683486ec8781464bbf19a8d/system.slice/mysqld.service
           └─101 /usr/local/mysql/bin/mysqld --daemonize --pid-file=/usr/local/my...

 

5.构建PHP镜像

(1) 创建工作目录

mkdir /opt/php
cd /opt/php

(2)上传 php-7.1.10.tar.bz2 到 /opt/php 目录中

[root@localhost php]# ls
[root@localhost php]# rz -E
rz waiting to receive.
[root@localhost php]# ls
php-7.1.10.tar.bz2  php-fpm.conf  php.ini  www.conf

(3)编辑Dockerfile文件

vim Dockerfile 

FROM centos:7
MAINTAINER this is php image 
RUN yum install -y gd \
libjpeg libjpeg-devel \
libpng libpng-devel \
freetype freetype-devel \
libxml2 libxml2-devel \
zlib zlib-devel \
curl curl-devel \
openssl openssl-devel \
gcc gcc-c++ make pcre-devel;useradd -M -s /sbin/nologin nginx
ADD php-7.1.10.tar.bz2 /usr/local/src/
WORKDIR /usr/local/src/php-7.1.10
RUN ./configure \
--prefix=/usr/local/php \
--with-mysql-sock=/usr/local/mysql/mysql.sock \
--with-mysqli \
--with-zlib \
--with-curl \
--with-gd \
--with-jpeg-dir \
--with-png-dir \
--with-freetype-dir \
--with-openssl \
--enable-fpm \
--enable-mbstring \
--enable-xml \
--enable-session \
--enable-ftp \
--enable-pdo \
--enable-tokenizer \
--enable-zip ; make -j 4 ; make install
ENV PATH /usr/local/php/bin:/usr/local/php/sbin:$PATH
ADD php.ini     /usr/local/php/lib/
ADD php-fpm.conf /usr/local/php/etc/
ADD www.conf /usr/local/php/etc/php-fpm.d/
EXPOSE 9000
CMD /usr/local/php/sbin/php-fpm -F

(4)准备Dockerfile需要的PHP配置文件

①配置php.ini文件

vim php.ini

#939行,取消注释，修改
date.timezone = Asia/Shanghai
#1170行,修改
mysqli.default_socket = /usr/local/mysql/mysql.sock
[root@benet23 php]# egrep -v "^;" php.ini | egrep -v "^$"
[PHP]
engine = On
short_open_tag = Off
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = -1
disable_functions =
disable_classes =
zend.enable_gc = On
expose_php = On
max_execution_time = 30
max_input_time = 60
memory_limit = 128M
error_reporting = E_ALL
display_errors = On
display_startup_errors = On
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
track_errors = On
html_errors = On
variables_order = "GPCS"
request_order = "GP"
register_argc_argv = Off
auto_globals_jit = On
post_max_size = 8M
auto_prepend_file =
auto_append_file =
default_mimetype = "text/html"
default_charset = "UTF-8"
doc_root =
user_dir =
enable_dl = Off
file_uploads = On
upload_max_filesize = 2M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
default_socket_timeout = 60
[CLI Server]
cli_server.color = On
[Date]
date.timezone = Asia/Shanghai
[filter]
[iconv]
[intl]
[sqlite3]
[Pcre]
[Pdo]
[Pdo_mysql]
pdo_mysql.cache_size = 2000
pdo_mysql.default_socket=
[Phar]
[mail function]
SMTP = localhost
smtp_port = 25
mail.add_x_header = On
[SQL]
sql.safe_mode = Off
[ODBC]
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1
[Interbase]
ibase.allow_persistent = 1
ibase.max_persistent = -1
ibase.max_links = -1
ibase.timestampformat = "%Y-%m-%d %H:%M:%S"
ibase.dateformat = "%Y-%m-%d"
ibase.timeformat = "%H:%M:%S"
[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.cache_size = 2000
mysqli.default_port = 3306
mysqli.default_socket = /usr/local/mysql/mysql.sock
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =
mysqli.reconnect = Off
[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = On
[OCI8]
[PostgreSQL]
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = Off
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0
[bcmath]
bcmath.scale = 0
[browscap]
[Session]
session.save_handler = files
session.use_strict_mode = 0
session.use_cookies = 1
session.use_only_cookies = 1
session.name = PHPSESSID
session.auto_start = 0
session.cookie_lifetime = 0
session.cookie_path = /
session.cookie_domain =
session.cookie_httponly =
session.serialize_handler = php
session.gc_probability = 1
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check =
session.cache_limiter = nocache
session.cache_expire = 180
session.use_trans_sid = 0
session.sid_length = 26
session.trans_sid_tags = "a=href,area=href,frame=src,form="
session.sid_bits_per_character = 5
[Assertion]
zend.assertions = 1
[COM]
[mbstring]
[gd]
[exif]
[Tidy]
tidy.clean_output = Off
[soap]
soap.wsdl_cache_enabled=1
soap.wsdl_cache_dir="/tmp"
soap.wsdl_cache_ttl=86400
soap.wsdl_cache_limit = 5
[sysvshm]
[ldap]
ldap.max_links = -1
[mcrypt]
[dba]
[opcache]
[curl]
[openssl]

②配置php-fpm.conf文件

vim php-fpm.conf 

#17行，删除注释符号“;”
pid = run/php-fpm.pid
[root@docker php]# egrep -v "^;" php-fpm.conf | egrep -v "^$"
[global]
pid = run/php-fpm.pid
include=/usr/local/php/etc/php-fpm.d/*.conf

③配置www.conf文件

vim www.conf 

#23、24行，修改用户和组
user = nginx
group = nginx
#36行，修改监听IP和端口为容器IP:9000端口
listen = 172.20.0.30:9000
[root@docker php]# egrep -v "^;" www.conf | egrep -v "^$"
[www]
user = nginx
group = nginx
listen = 172.20.0.30:9000
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3

(5)构建php镜像

docker build -t php:lnmp .

(6)启动PHP镜像

注意：此时MySQL容器要处于运行的状态

docker run -itd --name php --net mynetwork --ip 172.20.0.30 -p 9000:9000 --volumes-from nginx --volumes-from mysql php:lnmp

 

(7) 验证php

①进入php容器

[root@localhost php]# docker exec -it php bash
[root@12a35bf91472 php-7.1.10]# ps -aux
USER        PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root          1  0.0  0.0 113028  7520 pts/0    Ss+  07:01   0:00 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
nginx         7  0.0  0.0 113028  3772 pts/0    S+   07:01   0:00 php-fpm: pool www
nginx         8  0.0  0.0 113028  3772 pts/0    S+   07:01   0:00 php-fpm: pool www
root          9  0.6  0.0  11828  1892 pts/1    Ss   07:02   0:00 bash
root         23  0.0  0.0  51732  1724 pts/1    R+   07:02   0:00 ps -aux

 

6.启动 wordpress 服务 

(1) mysql 授权
进入 mysql 容器

[root@75e85cb863da bin]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.20 Source distribution

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> create database wordpress;
Query OK, 1 row affected (0.01 sec)

mysql> grant all privileges on wordpress.* to 'wordpress'@'%' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> grant all privileges on *.* to 'root'@'%' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> 

浏览器访问：

部署

http://192.168.204.140/wordpress/wp-admin/setup-config.php

 

 

 

二、实验

 1.环境准备

（1）关闭防火墙

先自定义网络，再使用指定IP运行docker

是LNMP各组件处于同一网段

 

 

 

 

Docker各组件的ip为：

 

 

2.构建Nginx镜像

(1) 创建nginx的工作目录

(2) 上传 软件包到 /opt/nginx/ 目录中

 

 

(3)编辑Dockerfile配置文件

 

(4) 准备Dockerfile文件中所需要的其他配置文件

 

取消注释，指定PHP网页文件、指定IP和端口号

 

(5) 构建nginx镜像

 

(6) 启动Nginx容器

 （7）查看 

 

 （8）验证 nginx 

 

 

 

3.构建MySQL容器

(1) 创建MySQL工作目录

 

(2) 上传 mysql-boost-5.7.20.tar.gz 到 /opt/mysqld 目录中

 

 

(3) 编辑Dockerfile文件

 

(4)编辑mysql的配置文件

 

（5)构建MySQL镜像

 

(6)启动MySQL镜像

 

 

 

(7)验证 mysql 

 

 

4.构建PHP镜像

(1) 创建工作目录

 

(2)上传 php-7.1.10.tar.bz2 到 /opt/php 目录中

 

(3)编辑Dockerfile文件

 

 

(4)准备Dockerfile需要的PHP配置文件

 

(5)构建php镜像

 ​​​​​​​

 

(6)启动PHP镜像

注意：此时MySQL容器要处于运行的状态

 

 查看，php镜像启动成功

 

 

(7) 验证php

 

 

5.启动 wordpress 服务 

(1)mysql 授权

进入mysql容器，登录数据库​​​​​​​

 

(2) 浏览器访问测试

http://192.168.204.140/wordpress/wp-admin/setup-config.php

进入配置页面

 输入用户名和密码

 现在安装

 设置用户名和密码

 

点击 登录

 登录成功

 进入系统

http://192.168.204.140/wordpress/wp-admin/

 首页展示

 

 

三、问题

1.构建nginx镜像报错

（1）报错

 （2）原因分析

存放的wordpress版本错误

（3）解决方法

重新上传（正确的为4.9.4）

 

2.构建php镜像报错

（1）报错

 

 （2）原因分析

存放的php版本错误

（3）解决方法

重新上传（正确的为bz2）

 

2.生成PHP镜像一直为Exited状态

（1）报错

PHP镜像一直为Exited状态

查看日志

 （2）原因分析

无法监听正确地址，需要修改监听地址

（3）修改配置文件​​​​​​​

 

 

3.wordpress页面无法跳转

（1）报错

访问页面无法跳转wordoress

 

（2）原因分析

 nginx配置文件反向代理地址填写错误，需要修改

（3）修改

 

4.如何将运行中的 docker容器保存为 docker 镜像并保存到本地tar包

（1）方法

1、docker commit <容器id> <镜像名>:     ---- 将容器保存成镜像，tag比如说latest
 
保存后 docker images 便可以看到镜像
 
2、docker save -o .tar <镜像名>:      ---- 将镜像保存为.tar文件，默认保存在当前目录

（2）从 tar 包导入docker镜像

1、docker load -i .tar     ---- 从 tar 包导入镜像
 
导入镜像后，通过 docker images 便可看到导入的镜像。
 
2、docker run -itd -p <本地端口>:<容器端口> <镜像名>:    ---- 通过镜像起容器

（3）案例「仅保存到tar包」

#查看容器ID
[root@localhost nginx]# docker ps -a
CONTAINER ID   IMAGE        COMMAND                   CREATED             STATUS             PORTS                                       NAMES
8e4a9fe69ef3   nginx:lnmp   "/usr/local/nginx/sb…"   About an hour ago   Up About an hour   0.0.0.0:80->80/tcp, :::80->80/tcp           nginx
a4a0028e17e9   php:lnmp     "/bin/sh -c '/usr/lo…"   About an hour ago   Up About an hour   0.0.0.0:9000->9000/tcp, :::9000->9000/tcp   php
75e85cb863da   mysql:lnmp   "/usr/sbin/init"          3 hours ago         Up 3 hours         3306/tcp                                    mysql


# 将容器保存成镜像
[root@localhost nginx]# docker commit 8e4a9fe69ef3 jiajianwei/wordpress:nginx
sha256:38b898818fd95029b914009ceba88c54bd16bc5d1b03500127f14a1210cd757e
[root@localhost nginx]# docker commit a4a0028e17e9 jiajianwei/wordpress:php
sha256:73c263cec3817fe320b10ef81165f9516b7209b21efd7c9cea55ba7cb2b3b996
[root@localhost nginx]# docker commit 75e85cb863da jiajianwei/wordpress:mysql
sha256:04bd50e63925df7e7c56e2bb411376510619f78a989d0eedd33fad3b3a0a927b

#查看镜像
[root@localhost nginx]# docker images
REPOSITORY             TAG       IMAGE ID       CREATED             SIZE
jiajianwei/wordpress   mysql     04bd50e63925   4 seconds ago       10.1GB
jiajianwei/wordpress   php       73c263cec381   25 seconds ago      1.35GB
jiajianwei/wordpress   nginx     38b898818fd9   47 seconds ago      598MB
nginx                  lnmp      a01cdeeb3075   About an hour ago   598MB
php                    lnmp      9e5e554f9300   2 hours ago         1.35GB
mysql                  lnmp      b61c11e30aed   3 hours ago         10.1GB

[root@localhost appsVolumn]# docker save -o mywordpress_nginx_config.tar jiajianwei/wordpress:nginx
[root@localhost appsVolumn]# docker save -o mywordpress_mysql_config.tar jiajianwei/wordpress:mysql
[root@localhost appsVolumn]# docker save -o mywordpress_php_config.tar jiajianwei/wordpress:php
[root@localhost appsVolumn]# ls
mywordpress_mysql_config.tar  mywordpress_nginx_config.tar  mywordpress_php_config.tar

 

 

 四、总结

快速检索PHP配置文件：

egrep -v "^(.)*#(.)*$" nginx.conf | grep -v "^$"

egrep -v "^;" php.ini | egrep -v "^$"

egrep -v "^;" www.conf | egrep -v "^$"

读取容器共享信息：

 #表示读取nginx容器的共享信息
--volumes-from nginx: 

 #表示读取mysql容器的共享信息
--volumes-from mysql: