dockerfile简单实践部署(jenkins,wordpress)

实现部署jenkins的流程

配置java环境,导入jenkins包,运行命令 java -jar jenkins包,这里为了减少进入jenkins的web端安装插件,将插件提前部署到容器内。

制作dockerfile

 创建镜像所在的文件夹和Dockerfile文件 
mkdir /test
cd /test

vim Dockerfile
###在Dockerfile文件中写入指令

FROM centos:7.9.2009   #镜像的基层

WORKDIR /opt  #进入镜像到/opt下 功能等同与cd

RUN yum -y install fontconfig  #构建镜像时执行的命令,安装fontconfig

ADD  jdk-11.0.16_linux-x64_bin.tar.gz  /opt/   #将本地文件添加到容器中,tar类型文件会自动解压

ADD jenkins-2.414.3.war  /opt/

ENV JAVA_HOME=/opt/jdk-11.0.16   #设置环境变量
ENV PATH=${PATH}:${JAVA_HOME}/bin
ENV JENKINS_HOME=${HOME}/.jenkins  #定义jenkins的默认数据存放目录

CMD [ "java","-jar","/opt/jenkins-2.414.3.war" ]    #容器启动时 进行调用

创建镜像

docker build -t jenkins:1.0 .

docker build  是docker创建镜像的命令  

查看镜像

[root@docker test]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED             SIZE
jenkins      1.0       533af05bcb29   3 hours ago         1.01GB
nginx        latest    605c77e624dd   23 months ago       141MB
mysql        latest    3218b38490ce   23 months ago       516MB
centos       latest    5d0da3dc9764   2 years ago         231MB

从镜像创建容器

docker run -itd -p 80:8080 -e JENKINS_HOME=/opt/.jenkins  -v plugins:/opt/.jenkins/plugins/ jenkins:1.0

-v 将宿主机的文件映射到容器内对应的文件

访问宿主机192.168.231.192

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由于已经将插件的包从宿主机映射到容器内,因此不在需要我们手动安装,点进去会很快加载好

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成功

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实现部署wordpress

流程大概就是需要nginx 与php,需要MySQL数据库存储,需要拉取wordpress代码,我们不能在容器内修改nginx的配置文件,因此需要在创建镜像的时候就将宿主机的nginx.conf拷贝到镜像内。通过nginx来访问php,因此需要将nginx的默认网页发布页面修改为wordpress,将权限改为777,方便我们后续操作。我们手动启动不了nginx与php,因此可以写个脚本 将脚本拷贝到镜像内,让其在容器启动时代替我们启动nginx与php。

 创建镜像所在的文件夹和Dockerfile文件 

mkdir /root/wordpress
cd /root/wordpress

vim  Dockerfile

####Dockerfile的内容
FROM centos:7.9.2009

##下载nginx与php
RUN yum install -y epel-release \
; yum install -y nginx \
; yum install -y http://rpms.remirepo.net/enterprise/remi-release-7.rpm \
; yum install -y php80-php-xsl php80-php php80-php-cli php80-php-devel php80-php-gd php80-php-pdo php80-php-mysql php80-php-fpm

##拷贝wordpress代码到镜像
ADD wordpress-6.4.2-zh_CN.tar.gz  /usr/share/nginx

COPY   nginx.conf  /etc/nginx/

COPY  wordpress.sh  /

CMD [ "sh","/wordpress.sh" ]

宿主机的nginx配置文件

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;
}

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 4096;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.

server {
        listen      80;
        server_name www.itnzs.top;
        location / {
                        root /usr/share/nginx/wordpress;
                        index index.php;
                }
        location ~ \.php$ {
            root          /usr/share/nginx/wordpress;  #指定网站目录
            fastcgi_pass   127.0.0.1:9000;    #指定访问地址
            fastcgi_index  index.php;           #指定默认文件
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name; #站点根目录,取决于root配置项
            include        fastcgi_params;  #包含nginx常量定义
                        }
        }

# Settings for a TLS enabled server.
#
#    server {
#        listen       443 ssl http2;
#        listen       [::]:443 ssl http2;
#        server_name  _;
#        root         /usr/share/nginx/html;
#
#        ssl_certificate "/etc/pki/nginx/server.crt";
#        ssl_certificate_key "/etc/pki/nginx/private/server.key";
#        ssl_session_cache shared:SSL:1m;
#        ssl_session_timeout  10m;
#        ssl_ciphers HIGH:!aNULL:!MD5;
#        ssl_prefer_server_ciphers on;
#
#        # Load configuration files for the default server block.
#        include /etc/nginx/default.d/*.conf;
#
#        error_page 404 /404.html;
#            location = /40x.html {
#        }
#
#        error_page 500 502 503 504 /50x.html;
#            location = /50x.html {
#        }
#    }

}

脚本


chmod 777 /usr/share/nginx/wordpress -R  ##设置nginx网页发布目录的权限
nginx  #启动nginx

#启动php
/opt/remi/php80/root/usr/sbin/php-fpm
echo "nginx与php已启动成功"

#因为你现在还没有做任何操作,docker容器是进程型的虚拟化,和vmware不同,vmware是真正的虚拟出来内存和核心的,docker容器当你的进程停止以后,容器也就停止了,这时候你需要把它夯住,我这里是动态查看nginx的日志 这个进程就自动不会停止,你也可以使用top  随机应变
tailf /var/log/nginx/*

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创建镜像

docker build -t wordpress:5.0  .

创建容器,并启动

[root@docker wordpress]# docker run -it -p 80:80 wordpress:5.0

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创建mysql的容器,这里是宿主机已经有mysql的镜像了

[root@docker ~]# docker run -itd  -e MYSQL_ROOT_PASSWORD=123456 -e MYSQL_DATABASE=wordpress   --name mysql mysql

##-e指定环境变量  指定登录数据库的root用户密码,指定创建mysql的数据库

访问web端 192.168.231.192

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