CentOS 安装 docker-compose

享受电梯享受生活 發表於 2021-5-17 15:02:00

部署环境搭建
1安装docker
<pre><code class="language-html hljs">  一定要用root账号登录系统,打开终端/或远程工具(如xshell)登录系统</code></pre>
<pre><code class="language-html hljs">检查是否已经安装  </code></pre>
    rpm –qa|grep docker
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
出现如上说明已安装
<pre><code class="language-html hljs">也可用命令docker -v  (如果成功显示版本号，不成功显示命令不可用)</code></pre>
<pre><code class="language-html hljs">也可用命令docker version</code></pre>
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
    可卸载重新安装（也选择不重新安装）
    rpm –e docker-1.13.1-84.git07f3374.el7.centos.x86_64 --nodeps (卸载时不检测依赖，只卸载该包)
  开始安装
安装新版本：https://blog.csdn.net/hanjun0612/article/details/117086463
    yum install docker(安装升级都可以)
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
    中途提示选项:选y  后面还会提示是否继续选y
    
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安装完成后查看版本
docker –v
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
  查看docker状态
    systemctl status docker
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
开启远程访问
vim /usr/lib/systemd/system/docker.service
(vim常用命令总结 https://www.cnblogs.com/yangjig/p/6014198.html)
(直接用gedit /usr/lib/systemd/system/docker.service 编辑更快捷)
在以下添加
-H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock \
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重新加载文件
systemctl daemon-reload
 
设置docker为随机启动
systemctl  enable  docker.service
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  启动docker   
systemctl  start  docker.service
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如果以上启动出错Job for docker.service failed because………
（解决参考https://blog.csdn.net/yangqinfeng1121/article/details/83374477）
根据提示运行:
systemctl status docker.service
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该提示说明：
此linux的内核中的SELinux不支持 overlay2 graph driver
解决方案：在docker里禁用selinux
vim /etc/sysconfig/docker  (vim常用命令总结 https://www.cnblogs.com/yangjig/p/6014198.html)
在这一行后面添加=false
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再启动
systemctl  start  docker.service
查看状态
systemctl  status  docker.service
显示如下代表启动成功
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
2安装docker-compose(用于编排服务启动)
 查看是否已经安装
docker-compose –v
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卸载重新安装（可选择）
pip uninstall docker-compose -y
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(全新安装从这里开始)
先检查pip是否安装
pip --version
如果没有则先安装pip
yum -y install epel-release
yum -y install python-pip
pip install --upgrade pip
安装docker-compose
pip install docker-compose --ignore-installed requests
查看版本
docker-compose –version
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配置docker-compose工件目录
在root目录下新建docker目录
mkdir docker
进入docker目录
cd docker
 
拉取centos镜象
docker pull docker.io/centos:7.5.1804
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查看拉取的镜象
    docker images
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<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
运行镜象docker.io/centos:7.5.1804，产生名为centos的容器用run命令运行并进入容器
docker  run -it  --name centos  docker.io/centos:7.5.1804
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安装java
升级所有包同时也升级软件和系统内核 (这个时间可能比较较不同网速时间不一样，可能需要5-10分钟左右)
yum -y update
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yum install -y java
查看是否安装成功
java –version
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145301754.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;435&quot;,&quot;height&quot;:&quot;65&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150654992-589598499.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
退出当前容器
exit
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145320798.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;335&quot;,&quot;height&quot;:&quot;54&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150700665-941109322.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
将容器centos保存为新的镜象
docker commit -m="update" -a="cjh" centos  mycentos:7.5.1804
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145414648.bmp&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;792&quot;,&quot;height&quot;:&quot;46&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150750243-1566021514.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
将镜象存为docker目录下的文件mycentos.tar（备用,预计580MB）
docker save -o mycentos.tar  mycentos:7.5.1804
删除容器
docker rm $(docker ps -qa)
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145514677.bmp&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;538&quot;,&quot;height&quot;:&quot;40&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150842690-865540374.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
删除镜象
docker rmi $(docker images -qa)
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145537127.bmp&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;884&quot;,&quot;height&quot;:&quot;166&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150855169-315091831.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
导入之前的mycentos.tar为镜象
docker load -i mycentos.tar
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145600753.bmp&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;538&quot;,&quot;height&quot;:&quot;78&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150907002-1827567642.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
查看镜象
docker images
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145620674.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;615&quot;,&quot;height&quot;:&quot;50&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150915932-685890763.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
<h3>文件配置</h3>
1.Wait.sh(文件wait.sh用来等待注册中心运行才能运行别的服务)
将项目下doc\deploy\wait.sh拷贝至当前目录/root/docker/wait.sh
给wait.sh赋可执行权限命令
 chmod 754 wait.sh
 
wait.sh
<div class="cnblogs_code">
<pre>#!/bin/bash
#******************************************************************************
#@date: 2018-12-10 10:18:43
#检测注册中心，配置中心，webapisys有没有启动
#******************************************************************************

: ${SLEEP_SECOND:=10}

#切换容器语言(zw2019-3-14)
export LANG='zh_CN.UTF-8'
export LC_LANG='zh_CN.UTF-8'
localedef -c -f UTF-8 -i zh_CN zh_CN.utf8

#set docker datetime as this Liunx system datetime
echo "Asia/shanghai" > /etc/timezone
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

wait_for() {
declare status=`curl -I -m 10 -o /dev/null -s -w %{http_code} $1:$2`
while [[ $status != 200 ]]
do
 echo $status
 echo wating for $1 to listen on $2...
 status=`curl -I -m 10 -o /dev/null -s -w %{http_code} $1:$2`
# echo $status
 sleep $SLEEP_SECOND
done
}

declare DEPENDS
declare CMD

while getopts "d:c:" arg
do
case $arg in
d)
 DEPENDS=$OPTARG
 ;;
c)
 CMD=$OPTARG
 ;;
?)
 echo "unkonw argument"
 exit 1
 ;;
esac
done

for var in ${DEPENDS//,/ }
do
host=${var%:*}
port=${var#*:}
wait_for $host $port
done

exec $CMD</pre>
</div>
 
 
2. docker-compose.yml(自动运行编排文件)
将项目下doc\deploy\docker-compose.yml拷贝至当前目录/root/docker/docker-compose.yml
 
docker-compose.yml
<div class="cnblogs_code">
<pre>version: '2.2'
services:
registry:
 image: registry:1.0
 ports:
 - '9088:9088'
 container_name: 'registry'
 entrypoint: java -jar $SECURITY /springCloud.registry-1.0.jar
 restart: on-failure
 #cpu_shares: 10
 #cpuset: '0'
 mem_limit: 1g
 memswap_limit: 2g
 mem_reservation: 512m

config:
 image: config:1.0
 ports:
 - "9089:9089"
 container_name: 'config'
 entrypoint:java-jar $SECURITY/springCloud.config-1.0.jar
 restart: on-failure
 #cpu_shares: 10
 #cpuset: '0'
 mem_limit: 1g
 memswap_limit: 2g
 mem_reservation: 512m

apicommon:
 image: apicommon:1.0
 volumes:
 - '/root/docker/logs:/logs'
 - '/root/docker/uploadFiles:/uploadFiles'
 - '/root/docker/wait.sh:/wait.sh'
 container_name: 'apicommon'
 depends_on:
 - registry
 - config
 entrypoint: /wait.sh -d registry:9088/health,config:9089/health -c 'java -jar -Dhost=$HOST -Dactive=$ACTIVE$SECURITY /kps.webAPICommon-1.0.jar '
 restart: on-failure
 #cpu_shares: 9
 #cpuset: '1,2,3'
 mem_limit: 1g
 memswap_limit: 2g
 mem_reservation: 512m

apisys:
 image: apisys:1.0
 volumes:
 - '/root/docker/logs:/logs'
 - '/root/docker/uploadFiles:/uploadFiles'
 - '/root/docker/wait.sh:/wait.sh'
 container_name: 'apisys'
 depends_on:
 - registry
 - config
 entrypoint:/wait.sh -d registry:9088/health,config:9089/health -c'java -jar -Dhost=$HOST -Dactive=$ACTIVE$SECURITY /kps.webAPISYS-1.0.jar '
 restart: on-failure
 #cpu_shares: 10
 #cpuset: '1,2,3'
 mem_limit: 1g
 memswap_limit: 2g
 mem_reservation: 512m

zuul: # 服务名
 image: zuul:1.0 #镜象名
 ports:#主机与容器端口映射
 - '9090:9090' #前者为主机端口，后为容器端口
 volumes:
 - '/root/docker/logs:/logs' #前者为主机目录，后为容器目录
 - '/root/docker/uploadFiles:/uploadFiles'
 - '/root/docker/wait.sh:/wait.sh'
 container_name: 'zuul' #容器名
 depends_on: # 启动依赖
 - registry
 - config
 entrypoint:/wait.sh -d registry:9088/health,config:9089/health -c 'java -jar -Dhost=$HOST -Dactive=$ACTIVE$SECURITY /springCloud.zuul-1.0.jar '
 restart: on-failure #非正常退出，立即重启
 #cpu_shares: 5 #cpu分配优先权重
 #cpuset: '1,2,3' #cpu核编号
 mem_limit: 1g#限制容器使用内存
 memswap_limit: 2g #交换区内存
 mem_reservation: 512m #预留内存</pre>
</div>
 
 
3.file.env文件用来配置环境变量
修改项目下doc\deploy\file.env
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145639775.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;421&quot;,&quot;height&quot;:&quot;102&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150922837-1991433841.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
将host改为服务主机ip或虚拟机ip,active修改为（test为测试，prod为生产）
修改后将它拷贝至/root/docker/file.env下
 
file.env
<div class="cnblogs_code">
<pre>#该文件存放于:/root/docker/file.env
#虚拟机快速启动参数
SECURITY='-Djava.security.egd=file:/dev/./urandom'
#虚拟机内存初始化参数
JAVA_OPTS='-server -Xms512m -Xmx512m -Xmn256m -XX:MetaspaceSize=256m -XX:MaxMetaspaceSize=256m -XX:CompressedClassSpaceSize=256m'
#springboot激活配置与访问配置中心参数
ACTIVE='test'
#服务器内网ip或centos系统ip
HOST='192.168.1.250'</pre>
</div>
 
4.file.sh文件也是配置环境变量
修改项目下doc\deploy\file.sh
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145658185.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;432&quot;,&quot;height&quot;:&quot;94&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150930094-413210872.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="91"> </div>
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="91">file.sh</div>
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="91">
<div class="cnblogs_code">
<pre>#该文件存放于:/etc/profile.d/file.sh
#虚拟机快速启动参数
export SECURITY='-Djava.security.egd=file:/dev/./urandom'
#虚拟机内存初始化参数
export JAVA_OPTS='-server -Xms512m -Xmx512m -Xmn256m -XX:MetaspaceSize=256m -XX:MaxMetaspaceSize=256m -XX:CompressedClassSpaceSize=256m'
#springboot激活配置与访问配置中心参数
export ACTIVE='test'
#服务器内网ip或centos系统ip
export HOST='192.168.1.250'</pre>
</div>
 
</div>
将host改为服务主机ip或虚拟机ip,active修改为（test为测试，prod为生产）
修改后将它拷贝至/etc/profile.d/file.sh
不重启linux情况下加载，运行命令:
source /etc/profile
 
设置docker-compose随机启动
进入/usr/lib/systemd/system目录
cd /usr/lib/systemd/system
vim docker-compose.service
内容见项目下docker-compose.service文件，
(也可以直接将项目下docker-compose.service拷贝至/usr/lib/systemd/system /docker-compose.service)
docker-compose.service
<div class="cnblogs_code">
<pre>
Description=docker-compose daemon
After=docker.service

Type=notify
NotifyAccess=main
EnvironmentFile=-/root/docker/file.env
ExecStart=/usr/bin/docker-compose -f /root/docker/docker-compose.yml up -d

WantedBy=multi-user.target
##配置了服务的描述，规定了在network启动之后执行，
##配置服务的启动，停止，重启
##配置用户模式</pre>
</div>
 
然后运行
systemctl enable docker-compose.service
 
3 防火墙设置
  开放这些端口： 9088(注册中心)，9089（配置中心），9090（网关），2375（docker）
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145801771.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hhbmp1bjA2MTI=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;&quot;,&quot;height&quot;:&quot;&quot;,&quot;lock&quot;:false,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150937818-1569188870.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
   
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="95">
<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145828725.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hhbmp1bjA2MTI=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;&quot;,&quot;height&quot;:&quot;&quot;,&quot;lock&quot;:false,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150947639-2011329339.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="97">
<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145852529.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hhbmp1bjA2MTI=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;&quot;,&quot;height&quot;:&quot;&quot;,&quot;lock&quot;:false,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517150956063-708456686.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
4 虚拟机端口映射
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145911252.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hhbmp1bjA2MTI=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;&quot;,&quot;height&quot;:&quot;&quot;,&quot;lock&quot;:false,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517151004746-798231538.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
映射这些端口(VM IP:192.168.75.143):
9088(注册中心)，9089（配置中心），9090（网关），2375（docker）
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="101">
<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517145927487.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hhbmp1bjA2MTI=,size_16,color_FFFFFF,t_70&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;&quot;,&quot;height&quot;:&quot;&quot;,&quot;lock&quot;:false,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517151020397-1227851524.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
 
5.开启centOS远程ssh方便以后部署;
 
查看本机是否安装SSH软件包
# rpm -qa | grep ssh
openssh-server-6.6.1p1-12.el7_1.x86_64
openssh-clients-6.6.1p1-12.el7_1.x86_64
libssh2-1.4.3-8.el7.x86_64
openssh-6.6.1p1-12.el7_1.x86_64
 
如果没有，则需要安装
# yum install openssh-server
 
第二步
 
开启 SSH 服务
# service sshd start
Redirecting to /bin/systemctl start sshd.service
 
查看TCP 22端口是否打开
# netstat -ntpl | grep 22
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 17816/sshd
tcp6 0 0 :::22 :::* LISTEN 17816/sshd
--------------------- 说明开启成功.
 
6关闭防火墙
因为是放在虚拟机里面部署，虚拟机外面有防火墙，所以要关闭CentOS的防火墙，不然上面开的端口(9090,9089,2375…)都不能访问，如果CentOS不是虚拟机请不要关闭防火墙。
查看centOS防火墙是否开启(active说明开启)
systemctl status firewalld
<div class="cke_widget_wrapper cke_widget_block cke_widget_image cke_image_nocaption cke_widget_selected" data-cke-widget-wrapper="1" data-cke-filter="off" data-cke-display-name="图像" data-cke-widget-id="103">
<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517150001746.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;878&quot;,&quot;height&quot;:&quot;156&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517151048151-1950888438.png">
<img src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
如果开启了防火墙，用命令停止
systemctl stop firewalld
禁用开机防火墙启动
systemctl disable firewalld
（再查看状态变了）
systemctl status firewalld
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<p class="cke_widget_element" data-cke-widget-keep-attr="0" data-widget="image" data-cke-widget-data="{&quot;hasCaption&quot;:false,&quot;src&quot;:&quot;https://img-blog.csdnimg.cn/20210517150024954.png&quot;,&quot;alt&quot;:&quot;&quot;,&quot;width&quot;:&quot;890&quot;,&quot;height&quot;:&quot;122&quot;,&quot;lock&quot;:true,&quot;align&quot;:&quot;center&quot;,&quot;classes&quot;:[]}"><img alt="" loading="lazy" src="https://img2020.cnblogs.com/blog/356447/202105/356447-20210517151055802-1711663392.png">
<img width="15" height="15" class="cke_reset cke_widget_drag_handler lazyload" title="点击并拖拽以移动" data-cke-widget-drag-handler="1" data-src="https://img2020.cnblogs.com/blog/356447/202107/356447-20210708115648020-121499649.gif"></div>
 
设置系统自动连接网络
/etc/sysconfig/network-scripts/ifcfg-ens33  将最后一行的onboot=no改为yes保存。 
来源：https://www.cnblogs.com/hanjun0612/p/14776977.html

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