Docker Swarm应用--lnmp部署WordPress

一、简介  

目的:使用Docker Swarm 搭建lnmp来部署WordPress

  1. 使用Dockerfile构建nginx、php镜像
  2. 将构建的镜像上传docker私有仓库
  3. 使用volume做workpress网站文件持久化(每个工作节点都要保存一份数据)
  4. 使用nfs共享存储做ngixn配置文件持久化(一份数据多个工作节点共享)
  5. mysql镜像直接从dockerhub中获取
  6. mysql的配置文件使用docker config创建(当然也可以用挂载的方式)
  7. mysql 数据使用volume数据卷持久化
  8. 启动是mysql--php--nginx

二、准备

  (1)如何创建私有仓库: http://www.cnblogs.com/bigberg/p/8821872.html   

# 已经创建好的私有库中的镜像
[root@manager ~]# curl http://172.16.60.95:5000/v2/_catalog
{"repositories":["busyboxx","nginx","php"]}

# 其中nginx和php是准备要用的 

  (2)Dockerfiel文件 

 1 FROM centos:latest
 2 MAINTAINER bigberg
 3 RUN yum -y install pcre-devel openssl-devel net-tools gcc gcc-c++ zlib zlib-devel \
 4     make openssl
 5 ADD nginx-1.12.1.tar.gz /tmp/
 6 RUN cd /tmp/nginx-1.12.1 \
 7     && ./configure --prefix=/usr/local/nginx \
 8      --with-http_ssl_module \
 9      --with-http_gzip_static_module \
10      --with-http_realip_module \
11     && make && make install
12 
13 ADD nginx.conf /usr/local/nginx/conf/nginx.conf
14 
15 RUN mkdir -p /usr/local/nginx/logs \
16     && mkdir -p /usr/local/nginx/conf/vhosts \
17     && groupadd -g 1001 nginx \
18     && useradd -g 1001 -u 1001 -s /sbin/nologin -M nginx
19 RUN cat /usr/share/zoneinfo/Asia/Shanghai > /etc/localtime
20 
21 EXPOSE 80
22 EXPOSE 443
23 CMD ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]
nginx-Dockerfile
 1 FROM centos:latest
 2 MAINTAINER bigberg
 3 
 4 RUN yum -y install gcc gcc-c++ gd-devel libxml2 libxml2-devel libcurl-devel \
 5     openssl openssl-devel curl curl-devel libjpeg libjpeg-devel libpng  \
 6     freestyle freestyle-devel pcre pcre-devel libxslt libxslt-devel bzip2 bzip2-devel
 7 ADD php-7.2.3.tar.gz /tmp/
 8 RUN cd /tmp/php-7.2.3 \
 9     && ./configure --prefix=/usr/local/php \
10     --with-curl --with-freetype-dir --with-gd \
11     --with-gettext --with-iconv-dir --with-kerberos \
12     --with-libdir=lib64 --with-libxml-dir --with-mysqli \
13     --with-openssl --with-pcre-regex --with-pdo-mysql \
14     --with-pdo-sqlite --with-pear --with-png-dir \
15     --with-jpeg-dir --with-xmlrpc --with-xsl --with-zlib \
16     --with-bz2 --with-mhash --enable-fpm --enable-bcmath \
17     --enable-libxml --enable-inline-optimization --enable-gd-native-ttf \
18     --enable-mbregex --enable-mbstring --enable-opcache \
19     --enable-pcntl --enable-shmop --enable-soap --enable-sockets \
20     --enable-sysvsem --enable-sysvshm --enable-xml --enable-zip \
21     && make && make install \
22     && cp ./sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm \
23     && chmod a+x /etc/init.d/php-fpm \
24     && groupadd -g 1001 www \
25     && useradd -g 1001 -u 1001 www
26 
27 RUN cat /usr/share/zoneinfo/Asia/Shanghai > /etc/localtime
28 ADD php-fpm.conf /usr/local/php/etc/php-fpm.conf
29 ADD php.ini /usr/local/php/etc/php.ini
30 ADD www.conf /usr/local/php/etc/php-fpm.d/www.conf
31 
32 EXPOSE 9000
33 CMD ["/usr/local/php/sbin/php-fpm", "--nodaemonize"]
php-Dockerfile

  安装包并未提供,其余配置文件可以在下面下载:

  https://github.com/Bigberg/docker/tree/master/compose-lnmp

  (3)系统环境   

节点名称 IP 操作系统 内核版本
manager 172.16.60.95 CentOs7 4.16.1-1.el7.elrepo.x86_64
node-01 172.16.60.96 CentOs7 4.16.1-1.el7.elrepo.x86_64
node-02 172.16.60.97 CentOs7 4.16.1-1.el7.elrepo.x86_64
node-03 172.16.60.98 CentOs7 4.16.1-1.el7.elrepo.x86_64

 

 #docker -v
Docker version 18.03.0-ce, build 0520e24

   (4)创建一个overlay网络  

# manager节点
docker network create -d overlay lnmp

  

三、部署服务

  3.1 创建mysql服务

   1)创建mysql配置文件 

[root@manager ~]# docker config create my.cnf /data/conf/my.cnf 
tw5h0s7cby10x5kqhy26vn7hz
[root@manager ~]# docker config ls
ID                          NAME                CREATED             UPDATED
tw5h0s7cby10x5kqhy26vn7hz   my.cnf             11 seconds ago      11 seconds ago

  简单的mysql配置文件 

[client]
port = 3306
socket = /var/lib/mysql/mysql.sock
default-character-set = utf8
[mysql]
port = 3306
socket = /var/lib/mysql/mysql.sock
default-character-set = utf8
[mysqld]
port = 3306
basedir = /var/lib/mysql
datadir = /var/lib/mysql
socket = /var/lib/mysql/mysql.sock
character-set-server = utf8
skip-external-locking
slow-query-log = on
long_query_time = 1
slow_query_log_file = /var/lib/mysql/slow.log

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER

log-error=/var/lib/mysql/mysql.log
pid-file=/var/lib/mysql/mysql.pid

  2)创建mysql服务 

[root@manager ~]# docker service create \
--name mysql \
--replicas 1 \
--network lnmp \
--config src=my.cnf,target=/etc/mysql/conf.d/my.cnf \
--mount type=volume,src=dbdata,dst=/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=123456 \
-e MYSQL_USER=wordpress \
-e MYSQL_PASSWORD=wp123456 \
-e MYSQL_DATABASE=wordpress \
--publish 3306:3306 \
mysql

参数:
--name: 服务名称
--replicas: 副本集个数
--network:使用的网络
--config:配置文件
--mount:挂载数据卷
MYSQL_ROOT_PASSWORD:设置mysql的root密码
MYSQL_USER:创建mysql的一个用户
MYSQL_PASSWORD:创建的用户密码
MYSQL_DATABASE:新建一个数据库实例
--publish:暴露端口

  3)查看mysql服务信息 

[root@manager ~]# docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE               PORTS
k2nkk4dkpycb        mysql               replicated          1/1                 mysql:latest        *:3306->3306/tcp
[root@manager ~]# docker service ps mysql
ID                  NAME                IMAGE               NODE                DESIRED STATE       CURRENT STATE           ERROR               PORTS
uzzp4mpmbg59        mysql.1             mysql:latest        node-01             Running             Running 2 minutes ago

  4)登入mysql查看配置信息

  登入ip在4个节点中都可以,配置信息确实是docker my.cnf中设置的

  

  5)在node-01上查看持久化数据 

[root@node-01 ~]# docker volume ls
DRIVER              VOLUME NAME
local               dbdata

  

  mysql的数据确实已经保存在数据卷中了

 

  3.2 创建php服务

  1)创建服务  

[root@manager ~]# docker service create \
> --name php \
> --replicas 3 \
> --network lnmp \
> --mount type=volume,src=wwwroot,dst=/usr/local/nginx/html \
> 172.16.60.95:5000/php:v1.0.1
l0hb9efv4qckxk6ibh36vax9f
overall progress: 3 out of 3 tasks 
1/3: running   
2/3: running   
3/3: running   
verify: Service converged

参数:
 --name php:服务名称
--replicas 3:副本数为3
--network lnmp:使用lnmp这个overlay网络
--mount :挂载数据卷,这个和nginx要使用的一样,方便php的fastcgi通过nginx找到文件
172.16.60.95:5000/php:v1.0.1:使用私有镜像

  2)查看服务 

[root@manager ~]# docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE                          PORTS
k2nkk4dkpycb        mysql               replicated          1/1                 mysql:latest                   *:3306->3306/tcp
l0hb9efv4qck        php                 replicated          3/3                 172.16.60.95:5000/php:v1.0.1   
[root@manager ~]# docker service ps php
ID                  NAME                IMAGE                          NODE                DESIRED STATE       CURRENT STATE                ERROR               PORTS
p9x3eggj1up8        php.1               172.16.60.95:5000/php:v1.0.1   node-01             Running             Running about a minute ago                       
kko40sac6twy        php.2               172.16.60.95:5000/php:v1.0.1   node-02             Running             Running about a minute ago                       
sz8q663q4gdt        php.3               172.16.60.95:5000/php:v1.0.1   node-03             Running             Running about a minute ago


# 现在已经有两个服务mysql和 php

  

  3.3 创建nginx服务

  1)创建一个nfs共享存储

  如何创建docker nfs存储:http://www.cnblogs.com/bigberg/p/8795265.html 

# 该nfs数据卷是用来存储nginx配置文件的,省得每个节点都要做配置

# 创建目录
# mkdir -p /data/conf/lnmp_nginx

# 修改nfs配置
vim /etc/exports

/data/conf/lnmp_nginx 172.16.60.0/24(rw,sync,no_root_squash)

# 重启nfs
# systemctl restart nfs

# 挂载测试(工作节点)

[root@node-03 ~]# mount -t nfs 172.16.60.95:/data/conf/lnmp_nginx /tmp
You have new mail in /var/spool/mail/root
[root@node-03 ~]#

# 取消挂载

[root@node-03 ~]# umount /tmp/

  2)创建nginx服务  

[root@manager ~]# docker service create \
--name nginx \
--replicas 3 \
--network lnmp \
--publish 8888:80 \
--mount type=volume,src=wwwroot,dst=/usr/local/nginx/html \
--mount 'type=volume,src=nginx-conf,dst=/usr/local/nginx/conf/vhosts,volume-driver=local,volume-nocopy=true,volume-opt=type=nfs,volume-opt=device=172.16.60.95:/data/conf/lnmp_nginx,"volume-opt=o=addr=172.16.60.95,vers=4,soft,timeo=180,bg,tcp,rw"' \
172.16.60.95:5000/nginx:v1.0.1

参数:
--name nginx:服务名称
--replicas 3:副本数3
--network lnmp:使用lnmp这个overlay网络
--publish 8888:80:映射的端口
--mount:第一个mount为网站文件持久化使用,第二个mount持久化nginx配置文件
172.16.60.95:5000/nginx:v1.0.1:使用私有镜像

  3)查看服务

[root@manager ~]# docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE                            PORTS
k2nkk4dkpycb        mysql               replicated          1/1                 mysql:latest                     *:3306->3306/tcp
q4ddyozuqguo        nginx               replicated          3/3                 172.16.60.95:5000/nginx:v1.0.1   *:8888->80/tcp
l0hb9efv4qck        php                 replicated          3/3                 172.16.60.95:5000/php:v1.0.1     
[root@manager ~]# docker service ps nginx
ID                  NAME                IMAGE                            NODE                DESIRED STATE       CURRENT STATE            ERROR               PORTS
tr98r5yfo82r        nginx.1             172.16.60.95:5000/nginx:v1.0.1   node-03             Running             Running 29 seconds ago                       
mrlpj5kiixfs        nginx.2             172.16.60.95:5000/nginx:v1.0.1   node-02             Running             Running 30 seconds ago                       
pxrhvhinrhpe        nginx.3             172.16.60.95:5000/nginx:v1.0.1   node-01             Running             Running 30 seconds ago  

# 现在有3个服务,而且都已经起来了

  4)在nfs存储中添加一个nginx配置文件  

[root@manager ~]# cd /data/conf/lnmp_nginx/
[root@manager lnmp_nginx]# vim wordpress.con

server {

    listen 80;
    server_name localhost;
    root html;
    index index.htm index.hmtl index.php;

    location ~ \.php$ {
        root html;
        fastcgi_pass php-cgi:9000;
	fastcgi_param SCRIPT_FILENAME  $document_root$fastcgi_script_name;
	include fastcgi_params;
    }

}

#因为是nfs共享存储,所以每个工作节点的nginx中vhosts中都有一个wordpress.conf

# 每个工作节点的nginx 需要reload一下

  访问测试:

  

 

四、部署wordpress

  1)放置网站文件(所有节点操作)  

# wwwroot数据卷是放置网站文件的,但是是volume本地驱动,所以不是共享数据卷,需要在每个节点上都放置WordPress网站文件

#查看wwwroot数据卷

[root@node-03 _data]# docker volume inspect wwwroot
[
    {
        "CreatedAt": "2018-04-16T17:24:01+08:00",
        "Driver": "local",
        "Labels": null,
        "Mountpoint": "/var/lib/docker/volumes/wwwroot/_data",
        "Name": "wwwroot",
        "Options": {},
        "Scope": "local"
    }
]

# 存放位置在/var/lib/docker/volumes/wwwroot/_data

# 下载WordPress压缩包
wget https://cn.wordpress.org/wordpress-4.9.4-zh_CN.tar.gz

# 将文件解压到wwwroot对应的文件夹中

tar -zxvf wordpress-4.9.4-zh_CN.tar.gz -C /var/lib/docker/volumes/wwwroot/_data/

  2)WordPress部署 

# 访问任意节点
http://172.16.60.96:8888/wordpress

  ①   

   

   ②用户名/密码(wordpress/wp123456)

   

  ③所有节点 

  vim /var/lib/docker/volumes/wwwroot/_data/wordpress/wp-config.php

  

  ④填写信息,设置用户(admin/123456)

  

  ⑤完成登入

  

 

  到此部署完成

 

posted @ 2018-04-16 17:50  Bigberg  阅读(897)  评论(0编辑  收藏  举报