我是靠谱客的博主 复杂流沙，最近开发中收集的这篇文章主要介绍笔记-单台虚拟机使用docker-compose搭建nginx(三节点)+keepalived(三节点)+Haproxy（单节点）文章简介目录结构镜像制作使用docker-compose部署运行docker-compose测试结尾，觉得挺不错的，现在分享给大家，希望可以做个参考。
概述
文章简介
记录自己如何使用Docker-compose在单台宿主机的情况下搭建Nginx（三节点)+keepalived(三节点)+Haproxy(单节点),希望对大家有帮助，如配置有问题或有可优化的地方请发评论，各位大佬们多多指教
目录结构
目录中stream配置文件为备用，以后想用再说。
[root@localhost nginx]# tree
.
├── check_nginx.sh
├── conf.d
│ ├── haproxy
│ │ └── haproxy.cfg
│ ├── nginx
│ │ └── nginx.conf
│ └── stream
│ └── server.conf
├── docker-compose.yml
├── init
│ └── nginx_index
│ ├── master
│ │ └── index-master.html
│ └── slave
│ ├── index-slave-1.html
│ └── index-slave-2.html
└── keepalive
├── master
│ └── keepalived-master.conf
└── slave
├── keepalived-slave-1.conf
└── keepalived-slave-2.conf
11 directories, 11 files镜像制作
制作nginx+keepalived镜像
编写Dockerfile
这里根据nginx官方提供的镜像来制作nginx+keepalived的镜像
FROM nginx
ARG TZ="Asia/Shanghai"
ENV TZ ${TZ}
COPY docker-entrypoint.sh /
RUN sed -i s@/deb.debian.org/@/mirrors.aliyun.com/@g /etc/apt/sources.list && apt-get clean && apt-get update && apt-get install --no-install-recommends -y keepalived && apt-get install --no-install-recommends -y net-tools && apt-get install --no-install-recommends -y && apt-get install --no-install-recommends -y curl && apt-get install --no-install-recommends -y procps && apt-get install --no-install-recommends -y wget && apt-get install && apt-get clean &&rm -rf /var/lib/apt/lists/* && chmod +x /docker-entrypoint.sh
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["nginx" , "-g" , "daemon off;"]docker-entrypoint.sh
#!/bin/sh
# vim:sw=4:ts=4:et
set -e
echo "keepalived start"
keepalived -f /etc/keepalived/keepalived.conf
echo "keepalived success"
if [ -z "${NGINX_ENTRYPOINT_QUIET_LOGS:-}" ]; then
exec 3>&1
else
exec 3>/dev/null
fi
if [ "$1" = "nginx" -o "$1" = "nginx-debug" ]; then
if /usr/bin/find "/docker-entrypoint.d/" -mindepth 1 -maxdepth 1 -type f -print -quit 2>/dev/null | read v; then
echo >&3 "$0: /docker-entrypoint.d/ is not empty, will attempt to perform configuration"
echo >&3 "$0: Looking for shell scripts in /docker-entrypoint.d/"
find "/docker-entrypoint.d/" -follow -type f -print | sort -n | while read -r f; do
case "$f" in
*.sh)
if [ -x "$f" ]; then
echo >&3 "$0: Launching $f";
"$f"
else
# warn on shell scripts without exec bit
echo >&3 "$0: Ignoring $f, not executable";
fi
;;
*) echo >&3 "$0: Ignoring $f";;
esac
done
echo >&3 "$0: Configuration complete; ready for start up"
else
echo >&3 "$0: No files found in /docker-entrypoint.d/, skipping configuration"
fi
fi
exec "$@"使用docker build构建镜像
docker build -t nginx-keepalived:0.0.2 .拉取Haproxy镜像
docker pull haproxy使用docker-compose部署
编写docker-compose.yml文件
version: "3"
services:
nginx_master:
image: nginx-keepalived:0.0.2
container_name: nginx-master
restart: always
privileged: true
volumes:
- ./conf.d/stream:/opt/nginx/stream/conf.d
- ./conf.d/nginx/nginx.conf:/etc/nginx/nginx.conf
- ./init/nginx_index/master/index-master.html:/usr/share/nginx/html/index.html
- ./keepalive/master/keepalived-master.conf:/etc/keepalived/keepalived.conf
- ./check_nginx.sh:/etc/keepalived/check_nginx.sh
networks:
nginx:
ipv4_address: "20.20.20.10"
cap_add:
- NET_ADMIN
nginx_slave1:
image: nginx-keepalived:0.0.2
container_name: nginx-slave1
restart: always
privileged: true
volumes:
- ./conf.d/stream:/opt/nginx/stream/conf.d
- ./conf.d/nginx/nginx.conf:/etc/nginx/nginx.conf
- ./init/nginx_index/slave/index-slave-1.html:/usr/share/nginx/html/index.html
- ./keepalive/slave/keepalived-slave-1.conf:/etc/keepalived/keepalived.conf
- ./check_nginx.sh:/etc/keepalived/check_nginx.sh
networks:
nginx:
ipv4_address: "20.20.20.20"
cap_add:
- NET_ADMIN
nginx_slave2:
image: nginx-keepalived:0.0.2
container_name: nginx-slave2
restart: always
privileged: true
volumes:
- ./conf.d/stream:/opt/nginx/stream/conf.d
- ./conf.d/nginx/nginx.conf:/etc/nginx/nginx.conf
- ./init/nginx_index/slave/index-slave-2.html:/usr/share/nginx/html/index.html
- ./keepalive/slave/keepalived-slave-2.conf:/etc/keepalived/keepalived.conf
- ./check_nginx.sh:/etc/keepalived/check_nginx.sh
networks:
nginx:
ipv4_address: "20.20.20.30"
cap_add:
- NET_ADMIN
proxy:
image: haproxy:latest
container_name: nginx-proxy
restart: always
ports:
- 80:6301
volumes:
- ./conf.d/haproxy/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg
networks:
- nginx
cap_add:
- NET_ADMIN
depends_on:
- nginx_master
- nginx_slave1
- nginx_slave2
networks:
nginx:
driver: bridge
ipam:
driver: default
config:
- subnet: "20.20.0.0/16"编辑keepalived配置文件
keepalived-master.conf
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_nginx.sh"
interval 2
weight -20
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 70
priority 200
preempt
advert_int 1
unicast_src_ip 20.20.20.10
unicast_peer {
20.20.20.20
20.20.20.30
}
authentication {
auth_type PASS
auth_pass Password@123
}
virtual_ipaddress {
20.20.20.40/24 dev eth0
}
track_script {
chk_nginx
}
}keepalived-slave-1.conf
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_nginx.sh"
interval 2
weight -20
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 70
priority 150
nopreempt
advert_int 1
unicast_src_ip 20.20.20.20
unicast_peer {
20.20.20.10
20.20.20.30
}
authentication {
auth_type PASS
auth_pass Password@123
}
virtual_ipaddress {
20.20.20.40/24 dev eth0
}
track_script {
chk_nginx
}
}keepalived-slave-2.conf
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_nginx.sh"
interval 2
weight -20
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 70
priority 100
nopreempt
advert_int 1
unicast_src_ip 20.20.20.30
unicast_peer {
20.20.20.20
20.20.20.10
}
authentication {
auth_type PASS
auth_pass Password@123
}
virtual_ipaddress {
20.20.20.40/24 dev eth0
}
track_script {
chk_nginx
}
}编写nginx监测脚本
#!/bin/bash
A=`ps -C nginx --no-header | wc -l`
if [ $A -eq 0 ];then
/usr/local/nginx/sbin/nginx
sleep 2
if [ `ps -C nginx --no-header | wc -l` -eq 0 ];then
killall keepalived
fi
fi编辑nginx配置文件
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http{
server {
listen 80;
server_name localhost;
charset utf-8;
location / {
root /usr/share/nginx/html;
index index.php index.html index.htm;
}
}
}编辑Haproxy配置文件
此处监听地址keepalived配置文件中配置的vip地址
global
log 127.0.0.1 local0
maxconn 4096
daemon
defaults
log 127.0.0.1 local3
mode http
option dontlognull
option redispatch
retries 2
maxconn 2000
balance roundrobin
timeout connect 5000ms
timeout client 5000ms
timeout server 5000ms
frontend main
bind *:6301
default_backend webserver
backend webserver
server nginx_master 20.20.20.40:80 check inter 2000 rise 2 fall 5编写测试页面
编辑测试用index-master.html
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<h1><strong>MASTER</strong></h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>编辑测试用index-slave-1.html
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<h1><strong>SLAVE-1</strong></h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>编辑测试用index-slave-2.html
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<h1><strong>SLAVE-2</strong></h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>运行docker-compose
docker-compose up -d运行情况如下
[root@localhost nginx]# docker-compose up -d
[+] Running 5/5
⠿ Network nginx_nginx Created 0.1s
⠿ Container nginx-slave2 Started 1.4s
⠿ Container nginx-master Started 1.3s
⠿ Container nginx-slave1 Started 1.5s
⠿ Container nginx-proxy Started 2.3s
[root@localhost nginx]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
14d6fbcd0db3 haproxy:latest "docker-entrypoint.s…" 5 seconds ago Up 2 seconds 0.0.0.0:80->6301/tcp, :::80->6301/tcp nginx-proxy
cd5c033ea077 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 6 seconds ago Up 3 seconds 80/tcp nginx-slave2
5a9a24a58169 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 6 seconds ago Up 3 seconds 80/tcp nginx-slave1
d168f89a8f51 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 6 seconds ago Up 3 seconds 80/tcp nginx-master测试
使用浏览器访问
关闭master节点
docker stop nginx-master运行结果如下：
[root@localhost nginx]# docker stop nginx-master
nginx-master
[root@localhost nginx]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
14d6fbcd0db3 haproxy:latest "docker-entrypoint.s…" 6 minutes ago Up 6 minutes 0.0.0.0:80->6301/tcp, :::80->6301/tcp nginx-proxy
cd5c033ea077 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 6 minutes ago Up 6 minutes 80/tcp nginx-slave2
5a9a24a58169 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 6 minutes ago Up 6 minutes 80/tcp nginx-slave1
d168f89a8f51 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 6 minutes ago Exited (0) 2 seconds ago nginx-master可以看到nginx-master节点已经处于退出状态
关闭nginx-master后刷新网页
关闭slave1节点
docker stop nginx-slave1运行结果如下：
[root@localhost nginx]# docker stop nginx-slave1
nginx-slave1
[root@localhost nginx]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
14d6fbcd0db3 haproxy:latest "docker-entrypoint.s…" 11 minutes ago Up 11 minutes 0.0.0.0:80->6301/tcp, :::80->6301/tcp nginx-proxy
cd5c033ea077 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 11 minutes ago Up 11 minutes 80/tcp nginx-slave2
5a9a24a58169 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 11 minutes ago Exited (0) 2 seconds ago nginx-slave1
d168f89a8f51 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 11 minutes ago Exited (0) 4 minutes ago nginx-master可以看到master节点和slave1节点都处于了退出状态
关闭slave1节点后刷新网页
可以看到切换非常的顺畅
打开master节点测试是否会进行一个抢占
docker start nginx-master运行效果如下:
[root@localhost nginx]# docker start nginx-master
nginx-master
[root@localhost nginx]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
14d6fbcd0db3 haproxy:latest "docker-entrypoint.s…" 14 minutes ago Up 14 minutes 0.0.0.0:80->6301/tcp, :::80->6301/tcp nginx-proxy
cd5c033ea077 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 14 minutes ago Up 14 minutes 80/tcp nginx-slave2
5a9a24a58169 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 14 minutes ago Exited (0) 3 minutes ago nginx-slave1
d168f89a8f51 nginx-keepalived:0.0.2 "/docker-entrypoint.…" 14 minutes ago Up 1 second 80/tcp nginx-master打开master节点后刷新网页
结尾
感谢大家的耐心观看，第一次发文章排版及顺序会不太好还望大家海涵，如果大家发现什么问题及优化的建议，可以发在评论，祝大家新年快乐，工作顺利
ps:这玩意咋生成目录
最后
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