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Docker常用命令

2020-11-12    
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Docker基本命令

更新软件包

yum -y update

安装Docker虚拟机

 yum install -y docker

运行、重启、关闭Docker虚拟机

service docker start
service docker stop

搜索镜像

 docker search 镜像名称

下载镜像

docker pull 镜像名称

查看镜像

 docker images

删除镜像

 docker rmi 镜像名称

运行容器

 docker run 启动参数  镜像名称

查看容器列表

 docker ps -a

停止、挂起、恢复容器

docker stop 容器ID
docker pause 容器ID
docker unpase 容器ID

查看容器信息

 docker inspect 容器ID

删除容器

docker rm 容器ID

数据卷管理

 docker volume create 数据卷名称  #创建数据卷
 docker volume rm 数据卷名称  #删除数据卷
 docker volume inspect 数据卷名称  #查看数据卷

网络管理

docker network ls 查看网络信息
docker network create --subnet=网段 网络名称
docker network rm 网络名称

避免VM虚拟机挂起恢复之后，Docker虚拟机断网

 vi /etc/sysctl.conf 
文件中添加`net.ipv4.ip_forward=1`这个配置
#重启网络服务
systemctl  restart network

开源前后端分离项目人人网，用Docker部署案例

前端部署方案：

Docker常用命令

 

后端部署方案

Docker常用命令

 

数据库集群部署方案：

Docker常用命令

 

redis集群部署方案

Docker常用命令

 

安装PXC集群，负载均衡，双机热备

安装PXC镜像

 docker pull percona/percona-xtradb-cluster

为PXC镜像改名

docker tag percona/percona-xtradb-cluster pxc

创建net1网段

docker network create --subnet=172.18.0.0/16 net1

创建5个数据卷

 docker volume create --name v1
docker volume create --name v2
docker volume create --name v3
docker volume create --name v4
docker volume create --name v5

创建备份数据卷（用于热备份数据）

docker volume create --name backup

创建5节点的PXC集群

注意，每个MySQL容器创建之后，因为要执行PXC的初始化和加入集群等工作，耐心等待1分钟左右再用客户端连接MySQL。另外，必须第1个MySQL节点启动成功，用MySQL客户端能连接上之后，再去创建其他MySQL节点。

#创建第1个MySQL节点
docker run -d -p 3306:3306 -e MYSQL_ROOT_PASSword=abc123456 
  -e CLUSTER_NAME=PXC 
    -e XTRABACKUP_PASSWORD=abc123456 
      -v v1:/var/lib/mysql -v backup:/data --privileged 
        --name=node1 
          --net=net1
            --ip 172.18.0.2 pxc
            
#创建第2个MySQL节点
docker run -d -p 3307:3306 
  -e MYSQL_ROOT_PASSWORD=abc123456 
    -e CLUSTER_NAME=PXC
      -e XTRABACKUP_PASSWORD=abc123456 
        -e CLUSTER_JOIN=node1 
          -v v2:/var/lib/mysql -v backup:/data --privileged 
            --name=node2 
              --net=net1
                --ip 172.18.0.3 pxc
#创建第3个MySQL节点
docker run -d -p 3308:3306 
  -e MYSQL_ROOT_PASSWORD=abc123456 
    -e CLUSTER_NAME=PXC 
      -e XTRABACKUP_PASSWORD=abc123456 
        -e CLUSTER_JOIN=node1 
          -v v3:/var/lib/mysql --privileged 
            --name=node3 
              --net=net1 
                --ip 172.18.0.4 pxc
#创建第4个MySQL节点
docker run -d -p 3309:3306 
  -e MYSQL_ROOT_PASSWORD=abc123456 
    -e CLUSTER_NAME=PXC 
      -e XTRABACKUP_PASSWORD=abc123456 
        -e CLUSTER_JOIN=node1 
          -v v4:/var/lib/mysql --privileged 
            --name=node4 
              --net=net1 
                --ip 172.18.0.5 pxc
#创建第5个MySQL节点
docker run -d -p 3310:3306 
  -e MYSQL_ROOT_PASSWORD=abc123456 
    -e CLUSTER_NAME=PXC 
      -e XTRABACKUP_PASSWORD=abc123456 
        -e CLUSTER_JOIN=node1 
          -v v5:/var/lib/mysql -v backup:/data --privileged 
            --name=node5 
              --net=net1 
                --ip 172.18.0.6 pxc

安装Haproxy镜像

docker pull haproxy

宿主机上编写Haproxy配置文件

 vi /home/soft/haproxy.cfg

配置文件如下：

global
    #工作目录
    chroot /usr/local/etc/haproxy
    #日志文件，使用rsyslog服务中local5日志设备（/var/log/local5），等级info
    log 127.0.0.1 local5 info
    #守护进程运行
    daemon

defaults
    log global
    mode    http
    #日志格式
    option  httplog
    #日志中不记录负载均衡的心跳检测记录
    option  dontlognull
    #连接超时（毫秒）
    timeout connect 5000
    #客户端超时（毫秒）
    timeout client  50000
    #服务器超时（毫秒）
    timeout server  50000

#监控界面   
listen  admin_stats
    #监控界面的访问的IP和端口
    bind  0.0.0.0:8888
    #访问协议
    mode        http
    #URI相对地址
    stats uri   /dbs
    #统计报告格式
    stats realm     Global statistics
    #登陆帐户信息
    stats auth  admin:abc123456
#数据库负载均衡
listen  proxy-mysql
    #访问的IP和端口
    bind  0.0.0.0:3306  
    #网络协议
    mode  tcp
    #负载均衡算法（轮询算法）
    #轮询算法：roundrobin
    #权重算法：static-rr
    #最少连接算法：leastconn
    #请求源IP算法：source 
    balance  roundrobin
    #日志格式
    option  tcplog
    #在MySQL中创建一个没有权限的haproxy用户，密码为空。
    #Haproxy使用这个账户对MySQL数据库心跳检测
    option  mysql-check user haproxy
    server  MySQL_1 172.18.0.2:3306 check weight 1 maxconn 2000  
    server  MySQL_2 172.18.0.3:3306 check weight 1 maxconn 2000  
    server  MySQL_3 172.18.0.4:3306 check weight 1 maxconn 2000 
    server  MySQL_4 172.18.0.5:3306 check weight 1 maxconn 2000
    server  MySQL_5 172.18.0.6:3306 check weight 1 maxconn 2000
    #使用keepalive检测死链
    option  tcpka

创建两个Haproxy容器

#创建第1个Haproxy负载均衡服务器
docker run -it -d -p 4001:8888 -p 4002:3306 
  -v /home/soft/haproxy:/usr/local/etc/haproxy 
    --name h1 --privileged --net=net1 --ip 172.18.0.7 haproxy
#进入h1容器，启动Haproxy
docker exec -it h1 bash
haproxy -f /usr/local/etc/haproxy/haproxy.cfg
#创建第2个Haproxy负载均衡服务器
docker run -it -d -p 4003:8888 -p 4004:3306 
  -v /home/soft/haproxy:/usr/local/etc/haproxy 
    --name h2 --privileged --net=net1 --ip 172.18.0.8 haproxy
#进入h2容器，启动Haproxy
docker exec -it h2 bash
haproxy -f /usr/local/etc/haproxy/haproxy.cfg

Haproxy容器内安装Keepalived，设置虚拟IP

#进入h1容器
docker exec -it h1 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件（参考下方配置文件）
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start
#宿主机执行ping命令
ping 172.18.0.201

配置文件内容如下：

vrrp_instance  VI_1 {
    state  MASTER
    interface  eth0
    virtual_router_id  51
    priority  100
    advert_int  1
    authentication {
        auth_type  PASS
        auth_pass  123456
    }
    virtual_ipaddress {
        172.18.0.201
    }
}
#进入h2容器
docker exec -it h2 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start
#宿主机执行ping命令
ping 172.18.0.201
vrrp_instance  VI_1 {
    state  MASTER
    interface  eth0
    virtual_router_id  51
    priority  100
    advert_int  1
    authentication {
        auth_type  PASS
        auth_pass  123456
    }
    virtual_ipaddress {
        172.18.0.201
    }
}

宿主机安装Keepalived，实现双击热备

#宿主机执行安装Keepalived
yum -y install keepalived
#修改Keepalived配置文件
vi /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start

Keepalived配置文件如下：

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.99.150
    }
}

virtual_server 192.168.99.150 8888 {
    delay_loop 3
    lb_algo rr 
    lb_kind NAT
    persistence_timeout 50
    protocol TCP

    real_server 172.18.0.201 8888 {
        weight 1
    }
}

virtual_server 192.168.99.150 3306 {
    delay_loop 3
    lb_algo rr 
    lb_kind NAT
    persistence_timeout 50
    protocol TCP

    real_server 172.18.0.201 3306 {
        weight 1
    }
}

热备份数据

#进入node1容器
docker exec -it node1 bash
#更新软件包
apt-get update
#安装热备工具
apt-get install percona-xtrabackup-24
#全量热备
innobackupex --user=root --password=abc123456 /data/backup/full

冷还原数据 停止其余4个节点，并删除节点

docker stop node2
docker stop node3
docker stop node4
docker stop node5
docker rm node2
docker rm node3
docker rm node4
docker rm node5

node1容器中删除MySQL的数据

#删除数据
rm -rf /var/lib/mysql/*
#清空事务
innobackupex --user=root --password=abc123456 
--Apply-back /data/backup/full/2018-04-15_05-09-07/
#还原数据
innobackupex --user=root --password=abc123456 
--copy-back  /data/backup/full/2018-04-15_05-09-07/

安装Redis，配置RedisCluster集群

安装Redis镜像

 docker pull yyyyttttwwww/redis

创建net2网段

docker network create --subnet=172.19.0.0/16 net2

创建6节点Redis容器

docker run -it -d --name r1 -p 5001:6379 --net=net2 --ip 172.19.0.2 redis bash
docker run -it -d --name r2 -p 5002:6379 --net=net2 --ip 172.19.0.3 redis bash
docker run -it -d --name r3 -p 5003:6379 --net=net2 --ip 172.19.0.4 redis bash
docker run -it -d --name r4 -p 5004:6379 --net=net2 --ip 172.19.0.5 redis bash
docker run -it -d --name r5 -p 5005:6379 --net=net2 --ip 172.19.0.6 redis bash

启动6节点Redis服务器

#进入r1节点
docker exec -it r1 bash
cp /home/redis/redis.conf /usr/redis/redis.conf
cd /usr/redis/src
./redis-server ../redis.conf
#进入r2节点
docker exec -it r2 bash
cp /home/redis/redis.conf /usr/redis/redis.conf
cd /usr/redis/src
./redis-server ../redis.conf
#进入r3节点
docker exec -it r3 bash
cp /home/redis/redis.conf /usr/redis/redis.conf
cd /usr/redis/src
./redis-server ../redis.conf
#进入r4节点
docker exec -it r4 bash
cp /home/redis/redis.conf /usr/redis/redis.conf
cd /usr/redis/src
./redis-server ../redis.conf
#进入r5节点
docker exec -it r5 bash
cp /home/redis/redis.conf /usr/redis/redis.conf
cd /usr/redis/src
./redis-server ../redis.conf
#进入r6节点
docker exec -it r6 bash
cp /home/redis/redis.conf /usr/redis/redis.conf
cd /usr/redis/src
./redis-server ../redis.conf

创建Cluster集群

#在r1节点上执行下面的指令
cd /usr/redis/src
mkdir -p ../cluster
cp redis-trib.rb ../cluster/
cd ../cluster
#创建Cluster集群
./redis-trib.rb create 
  --replicas 1 
172.19.0.2:6379 
172.19.0.3:6379 
172.19.0.4:6379 
172.19.0.5:6379 
172.19.0.6:6379 
172.19.0.7:6379

打包部署后端项目

进入人人开源后端项目，执行打包（修改配置文件，更改端口，打包三次生成三个JAR文件）

mvn clean install -Dmaven.test.skip=true

安装JAVA镜像

docker pull java

创建3节点Java容器

#创建数据卷，上传JAR文件
docker volume create j1
#启动容器
docker run -it -d --name j1 -v j1:/home/soft --net=host java
#进入j1容器
docker exec -it j1 bash
#启动Java项目
nohup java -jar /home/soft/renren-fast.jar

#创建数据卷，上传JAR文件
docker volume create j2
#启动容器
docker run -it -d --name j2 -v j2:/home/soft --net=host java
#进入j1容器
docker exec -it j2 bash
#启动Java项目
nohup java -jar /home/soft/renren-fast.jar

#创建数据卷，上传JAR文件
docker volume create j3
#启动容器
docker run -it -d --name j3 -v j3:/home/soft --net=host java
#进入j1容器
docker exec -it j3 bash
#启动Java项目
nohup java -jar /home/soft/renren-fast.jar

安装Nginx镜像

docker pull nginx

创建Nginx容器，配置负载均衡

宿主机上/home/n1/nginx.conf配置文件内容如下：

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
    
    proxy_redirect          off;
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    client_max_body_size    10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   5s;
    proxy_send_timeout      5s;
    proxy_read_timeout      5s;
    proxy_buffer_size        4k;
    proxy_buffers           4 32k;
    proxy_busy_buffers_size  64k;
    proxy_temp_file_write_size 64k;
    
    upstream Tomcat {
        server 192.168.99.104:6001;
        server 192.168.99.104:6002;
        server 192.168.99.104:6003;
    }
    server {
        listen       6101;
        server_name  192.168.99.104; 
        location / {  
            proxy_pass   http://tomcat;
            index  index.html index.htm;  
        }  
    }
}

创建第1个Nginx节点

docker run -it -d --name n1 
  -v /home/n1/nginx.conf:/etc/nginx/nginx.conf 
    --net=host --privileged nginx

宿主机上/home/n2/nginx.conf配置文件内容如下：

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
    
    proxy_redirect          off;
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    client_max_body_size    10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   5s;
    proxy_send_timeout      5s;
    proxy_read_timeout      5s;
    proxy_buffer_size        4k;
    proxy_buffers           4 32k;
    proxy_busy_buffers_size  64k;
    proxy_temp_file_write_size 64k;
    
    upstream tomcat {
        server 192.168.99.104:6001;
        server 192.168.99.104:6002;
        server 192.168.99.104:6003;
    }
    server {
        listen       6102;
        server_name  192.168.99.104; 
        location / {  
            proxy_pass   http://tomcat;
            index  index.html index.htm;  
        }  
    }
}

创建第2个Nginx节点

docker run -it -d --name n2 
  -v /home/n2/nginx.conf:/etc/nginx/nginx.conf 
    --net=host --privileged nginx

在Nginx容器安装Keepalived

#进入n1节点
docker exec -it n1 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件(如下)
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.99.151
    }
}
virtual_server 192.168.99.151 6201 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
    real_server 192.168.99.104 6101 {
        weight 1
    }
}
#进入n1节点
docker exec -it n2 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件(如下)
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.99.151
    }
}
virtual_server 192.168.99.151 6201 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
    real_server 192.168.99.104 6102 {
        weight 1
    }
}

打包部署后端项目

在前端项目路径下执行打包指令

npm run build

build目录的文件拷贝到宿主机的/home/fn1/renren-vue、/home/fn2/renren-vue、/home/fn3/renren-vue的目录下面

创建3节点的Nginx，部署前端项目

宿主机/home/fn1/nginx.conf的配置文件

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
	
	proxy_redirect          off;
	proxy_set_header        Host $host;
	proxy_set_header        X-Real-IP $remote_addr;
	proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
	client_max_body_size    10m;
	client_body_buffer_size   128k;
	proxy_connect_timeout   5s;
	proxy_send_timeout      5s;
	proxy_read_timeout      5s;
	proxy_buffer_size        4k;
	proxy_buffers           4 32k;
	proxy_busy_buffers_size  64k;
	proxy_temp_file_write_size 64k;
	
	server {
		listen 6501;
		server_name  192.168.99.104;
		location  /  {
			root  /home/fn1/renren-vue;
			index  index.html;
		}
	}
}
#启动第fn1节点
docker run -it -d --name fn1 
  -v /home/fn1/nginx.conf:/etc/nginx/nginx.conf 
    -v /home/fn1/renren-vue:/home/fn1/renren-vue --privileged 
      --net=host nginx

宿主机/home/fn2/nginx.conf的配置文件

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
    
    proxy_redirect          off;
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    client_max_body_size    10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   5s;
    proxy_send_timeout      5s;
    proxy_read_timeout      5s;
    proxy_buffer_size        4k;
    proxy_buffers           4 32k;
    proxy_busy_buffers_size  64k;
    proxy_temp_file_write_size 64k;
    
    server {
        listen 6502;
        server_name  192.168.99.104;
        location  /  {
            root  /home/fn2/renren-vue;
            index  index.html;
        }
    }
}
#启动第fn2节点
docker run -it -d --name fn2 
  -v /home/fn2/nginx.conf:/etc/nginx/nginx.conf 
    -v /home/fn2/renren-vue:/home/fn2/renren-vue --privileged 
      --net=host nginx

宿主机/home/fn3/nginx.conf的配置文件

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
    
    proxy_redirect          off;
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    client_max_body_size    10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   5s;
    proxy_send_timeout      5s;
    proxy_read_timeout      5s;
    proxy_buffer_size        4k;
    proxy_buffers           4 32k;
    proxy_busy_buffers_size  64k;
    proxy_temp_file_write_size 64k;
    
    server {
        listen 6503;
        server_name  192.168.99.104;
        location  /  {
            root  /home/fn3/renren-vue;
            index  index.html;
        }
    }
}

启动fn3节点

 
#启动第fn3节点
docker run -it -d --name fn3 
  -v /home/fn3/nginx.conf:/etc/nginx/nginx.conf 
    -v /home/fn3/renren-vue:/home/fn3/renren-vue --privileged 
      --net=host nginx

配置负载均衡

宿主机/home/ff1/nginx.conf配置文件

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
    
    proxy_redirect          off;
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    client_max_body_size    10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   5s;
    proxy_send_timeout      5s;
    proxy_read_timeout      5s;
    proxy_buffer_size        4k;
    proxy_buffers           4 32k;
    proxy_busy_buffers_size  64k;
    proxy_temp_file_write_size 64k;
    
    upstream fn {
        server 192.168.99.104:6501;
        server 192.168.99.104:6502;
        server 192.168.99.104:6503;
    }
    server {
        listen       6601;
        server_name  192.168.99.104; 
        location / {  
            proxy_pass   http://fn;
            index  index.html index.htm;  
        }  
    }
}
#启动ff1节点
docker run -it -d --name ff1 
  -v /home/ff1/nginx.conf:/etc/nginx/nginx.conf 
    --net=host --privileged nginx

宿主机/home/ff2/nginx.conf配置文件

user  nginx;
worker_processes  1;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

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

    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;

    keepalive_timeout  65;

    #gzip  on;
    
    proxy_redirect          off;
    proxy_set_header        Host $host;
    proxy_set_header        X-Real-IP $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
    client_max_body_size    10m;
    client_body_buffer_size   128k;
    proxy_connect_timeout   5s;
    proxy_send_timeout      5s;
    proxy_read_timeout      5s;
    proxy_buffer_size        4k;
    proxy_buffers           4 32k;
    proxy_busy_buffers_size  64k;
    proxy_temp_file_write_size 64k;
    
    upstream fn {
        server 192.168.99.104:6501;
        server 192.168.99.104:6502;
        server 192.168.99.104:6503;
    }
    server {
        listen       6602;
        server_name  192.168.99.104; 
        location / {  
            proxy_pass   http://fn;
            index  index.html index.htm;  
        }  
    }
}
#启动ff2节点
docker run -it -d --name ff2 
  -v /home/ff2/nginx.conf:/etc/nginx/nginx.conf 
    --net=host --privileged nginx

配置双机热备

#进入ff1节点
docker exec -it ff1 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件(如下)
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 52
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.99.152
    }
}
virtual_server 192.168.99.151 6701 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
    real_server 192.168.99.104 6601 {
        weight 1
    }
}
#进入ff1节点
docker exec -it ff2 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件(如下)
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 52
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.99.152
    }
}
virtual_server 192.168.99.151 6701 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
    real_server 192.168.99.104 6602 {
        weight 1
    }
}
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