标签：写入 镜像 for group oca 可伸缩 openssl ash from
docker是一个轻量级的虚拟化技术，而lnmp是一个强大、开源的web运行环境，这里我们就演示用Docker来构建一个lnmp镜像。
PS：为了保持轻量化和可伸缩，Docker鼓励我们 “one process per container”，也就是不要在一个镜像中集成太多的功能，我们这里主要是为了学习研究，所以违背了这个准则，更好的方案是Nginx、Mysql、PHP各自创建镜像，在单独的容器里运行，然后通过容器间的互联实现通信。
1、拉取官方的 centos:6.9 作为基础镜像，安装好基础环境
[root@localhost ~]# docker pull centos:6.9 6.9: Pulling from centos 055b9989266a: Pull complete f1070d829305: Pull complete e071bce628ba: Pull complete Digest: sha256:e7bdc458659b6e644ae85694f2baaf3727c06ad82186fca80f4e3a8e88907cc3 Status: Downloaded newer image for centos:6.9 [root@localhost ~]# [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE httpd 2.4.29 91199e851c7a 4 weeks ago 177.3 MB centos 6.9 e071bce628ba 4 weeks ago 194.7 MB ubuntu 14.04 b44ce450cb60 11 weeks ago 188 MB [root@localhost ~]# [root@localhost ~]# docker run -it centos:6.9 /bin/bash [root@df040eea8088 /]# ls bin dev etc home lib lib64 lost+found media mnt opt proc root sbin selinux srv sys tmp usr var [root@localhost ~]# [root@df040eea8088 /]# yum install -y epel-release .......
2、安装PHP
[root@df040eea8088 /]# yum install -y php php-fpm php-mysql ......... ......... [root@df040eea8088 /]# php -v PHP 5.3.3 (cli) (built: Mar 22 2017 12:27:09) Copyright (c) 1997-2010 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies [root@df040eea8088 /]# php-fpm -v PHP 5.3.3 (fpm-fcgi) (built: Mar 22 2017 12:28:05) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies [root@df040eea8088 /]# [root@df040eea8088 /]# php -m [PHP Modules] bz2 calendar Core ctype curl date ereg exif fileinfo filter ftp gettext gmp hash iconv json libxml mysql mysqli openssl pcntl pcre PDO pdo_mysql pdo_sqlite Phar readline Reflection session shmop SimpleXML sockets SPL sqlite3 standard tokenizer xml zip zlib [Zend Modules]
3、安装Nginx并配置PHP fastcgi
[root@df040eea8088 /]# yum install -y nginx .......
配置Nginx以支持PHP，修改 /etc/nginx/conf.d/default.conf 如下：
# # The default server # server { listen 80 default_server; listen [::]:80 default_server; server_name _; root /www; #change document_root to /www # Load configuration files for the default server block. include /etc/nginx/default.d/*.conf; location / { } #support php access location ~ .*\.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } error_page 404 /404.html; location = /40x.html { } error_page 500 502 503 504 /50x.html; location = /50x.html { } }
创建 /www 目录，并且修改用户和用户组为 apache （php-fpm默认运行用户和组为apache）
[root@df040eea8088 /]# mkdir /www [root@df040eea8088 /]# chown apache:apache /www [root@df040eea8088 /]# ll / | grep www drwxr-xr-x. 2 apache apache 4096 Dec 4 08:21 www
4、安装mysql
[root@df040eea8088 /]# yum install -y mysql mysql-server ...... ...... [root@df040eea8088 /]# /etc/init.d/mysqld start Starting mysqld: [ OK ] [root@df040eea8088 /]# /usr/bin/mysqladmin -u root password ‘123456‘ [root@df040eea8088 /]# /etc/init.d/mysqld stop Stopping mysqld: [ OK ]
5、编写启动命令
[root@df040eea8088 /]# touch /bin/startup.sh [root@df040eea8088 /]# chmod +x /bin/startup.sh
然后向startup.sh写入如下内容：
#!/bin/sh /etc/init.d/mysqld start /etc/init.d/php-fpm start /etc/init.d/nginx start #dead loop while ((1)) do sleep 1h done
6、清理不再需要的数据以缩减镜像的尺寸，然后docker commit生成新镜像
[root@df040eea8088 /]# yum remove -y epel-release [root@df040eea8088 /]# yum clean all Loaded plugins: fastestmirror, ovl Cleaning repos: base extras updates Cleaning up Everything Cleaning up list of fastest mirrors [root@df040eea8088 /]# exit exit [root@localhost ~]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES df040eea8088 centos:6.9 "/bin/bash" 2 hours ago Exited (0) 31 seconds ago sleepy_yalow [root@localhost ~]# docker commit df0 centos:lnmp efa371fe9b0ede828fe1999e7831491d1dd24cda26f1a27092a9565f4c781e06 [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE centos lnmp efa371fe9b0e 57 seconds ago 453.4 MB httpd 2.4.29 91199e851c7a 4 weeks ago 177.3 MB centos 6.9 e071bce628ba 4 weeks ago 194.7 MB ubuntu 14.04 b44ce450cb60 11 weeks ago 188 MB
7、测试镜像，启动容器
[root@localhost ~]# docker run -d -p 8848:80 -v /www:/www centos:lnmp /bin/startup.sh [root@localhost www]# cd /www [root@localhost www]# echo "<?php echo time() . PHP_EOL;" > index.php [root@localhost www]# cat index.php <?php echo time() . PHP_EOL; [root@localhost www]# curl ‘127.0.0.1:8848/index.php‘ 1512380042
再测试mysql是否正常
[root@localhost www]# touch /www/db.php
代码内容：
<?php $db = new mysqli(‘127.0.0.1‘, ‘root‘, ‘123456‘, ‘mysql‘); if ($db->connect_errno) { die("连接数据库失败". $db->connect_error); } echo "连接成功"; $db->close();
访问 127.0.0.1:8848/db.php
[root@localhost www]# curl ‘127.0.0.1:8848/db.php‘ 连接成功[root@localhost www]#
标签：写入 镜像 for group oca 可伸缩 openssl ash from
原文地址：https://www.cnblogs.com/is-possible/p/12373378.html
