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Nacos 高可用环境搭建（基于Docker）

网友: 文档中心 2022-06-06 09:21:36

Nacos 高可用环境搭建

Nacos 高可用环境 = Nacos 集群 + Nacos 持久化

请添加图片描述

参考：<(￣︶￣)↗Nacos官网 - 集群部署说明

文章目录

  • Nacos 高可用环境搭建
    • 1、创建 Docker 局域网
    • 2、创建并启动1个 Nginx 容器，将容器加入局域网
    • 3、创建并启动1个 MySQL 容器，将容器加入局域网
    • 4、创建并启动3个 Nacos 容器，将容器加入局域网
    • 5、验证上述容器能否相互 ping 通
    • 6、配置 Nacos 持久化、集群
    • 7、验证 Nacos 持久化是否生效
    • 8、配置 Nginx 对 Nacos 的负载均衡
    • 9、验证 Nginx 负载均衡是否生效

1、创建 Docker 局域网

  1. 创建 Docker 局域网

    PS C:\Users\xiao> docker network create MyNetwork56b64b706d69bf2d3b30eb6d63c94bb110c74e16febf96c1b1b0aa687cc3d493

  2. 罗列所有局域网

    PS C:\Users\xiao> docker network lsNETWORK ID     NAME DRIVER    SCOPE56b64b706d69   MyNetwork   bridge    locale19f31ab243a   bridge      bridge    local09b9f7e52530   host host      local3bb55566e6c5   none null      local

  3. 查看局域网详情

    PS C:\Users\xiao> docker network inspect MyNetwork[    { "Name": "MyNetwork", "Id": "56b64b706d69bf2d3b30eb6d63c94bb110c74e16febf96c1b1b0aa687cc3d493", "Created": "2022-01-27T11:58:16.195894307Z", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": {     "Driver": "default",     "Options": {},     "Config": [  {      "Subnet": "172.18.0.0/16",      "Gateway": "172.18.0.1"  }     ] }, "Internal": false, "Attachable": false, "Ingress": false, "ConfigFrom": {     "Network": "" }, "ConfigOnly": false, "Containers": {}, "Options": {}, "Labels": {}    }]

2、创建并启动1个 Nginx 容器，将容器加入局域网

  1. 创建并启动 Nginx 容器

    <(￣︶￣)↗Nginx 实战 - 安装.md

  2. 将 Nginx 容器加入局域网

    PS C:\Users\xiao> docker network connect MyNetwork MyNginx

  3. 检查 Nginx 容器是否成功加入局域网

    PS C:\Users\xiao> docker network inspect MyNetwork[    { "Name": "MyNetwork", "Id": "56b64b706d69bf2d3b30eb6d63c94bb110c74e16febf96c1b1b0aa687cc3d493", "Created": "2022-01-27T11:58:16.195894307Z", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": {     "Driver": "default",     "Options": {},     "Config": [  {      "Subnet": "172.18.0.0/16",      "Gateway": "172.18.0.1"  }     ] }, "Internal": false, "Attachable": false, "Ingress": false, "ConfigFrom": {     "Network": "" }, "ConfigOnly": false, "Containers": {     "9ba1cfa5e902ba3f4cfebb6404d03f8c4cbe1aa418fc4ae682722c5882c88811": {  "Name": "MyNginx",  "EndpointID": "22e350022928c6e597a0bc217b84270525ab8400bb84d04387d63632f0b028eb",  "MacAddress": "02:42:ac:12:00:02",  "IPv4Address": "172.18.0.2/16",  "IPv6Address": ""     } }, "Options": {}, "Labels": {}    }]

3、创建并启动1个 MySQL 容器，将容器加入局域网

  1. 创建并启动 MySQL 容器

    <(￣︶￣)↗MySQL 实战 - 安装.md

  2. 将 MySQL 容器加入局域网

    PS C:\Users\xiao> docker network connect MyNetwork MyMySQL

  3. 检查 MySQL 容器是否成功加入局域网

    PS C:\Users\xiao> docker network inspect MyNetwork[    { "Name": "MyNetwork", "Id": "56b64b706d69bf2d3b30eb6d63c94bb110c74e16febf96c1b1b0aa687cc3d493", "Created": "2022-01-27T11:58:16.195894307Z", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": {     "Driver": "default",     "Options": {},     "Config": [  {      "Subnet": "172.18.0.0/16",      "Gateway": "172.18.0.1"  }     ] }, "Internal": false, "Attachable": false, "Ingress": false, "ConfigFrom": {     "Network": "" }, "ConfigOnly": false, "Containers": {     "9ba1cfa5e902ba3f4cfebb6404d03f8c4cbe1aa418fc4ae682722c5882c88811": {  "Name": "MyNginx",  "EndpointID": "22e350022928c6e597a0bc217b84270525ab8400bb84d04387d63632f0b028eb",  "MacAddress": "02:42:ac:12:00:02",  "IPv4Address": "172.18.0.2/16",  "IPv6Address": ""     },     "45a4bca256c29842067cb324c67f3288c24b545a61cb796f4df1bfc5b1fcaae6": {  "Name": "MyMySQL",  "EndpointID": "f80a9fbd1f849a58f18b45d4d7684295e6d8e593c0b308af7215846692e2e57d",  "MacAddress": "02:42:ac:12:00:03",  "IPv4Address": "172.18.0.3/16",  "IPv6Address": ""     } }, "Options": {}, "Labels": {}    }]

4、创建并启动3个 Nacos 容器，将容器加入局域网

  1. 创建并启动 Nacos 容器（集群模式）

    <(￣︶￣)↗Nacos 实战 - 安装与使用.md

    docker run -itd -p 8848:8848 --env MODE=cluster --name MyNacos1 nacos/nacos-serverdocker run -itd -p 8849:8848 --env MODE=cluster --name MyNacos2 nacos/nacos-serverdocker run -itd -p 8850:8848 --env MODE=cluster --name MyNacos3 nacos/nacos-server

  2. 将 Nacos 容器加入局域网

    docker network connect MyNetwork MyNacos1docker network connect MyNetwork MyNacos2docker network connect MyNetwork MyNacos3

  3. 检查 Nacos 容器是否成功加入局域网

    PS C:\Users\xiao> docker network inspect MyNetwork[    { "Name": "MyNetwork", "Id": "56b64b706d69bf2d3b30eb6d63c94bb110c74e16febf96c1b1b0aa687cc3d493", "Created": "2022-01-27T11:58:16.195894307Z", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": {     "Driver": "default",     "Options": {},     "Config": [  {      "Subnet": "172.18.0.0/16",      "Gateway": "172.18.0.1"  }     ] }, "Internal": false, "Attachable": false, "Ingress": false, "ConfigFrom": {     "Network": "" }, "ConfigOnly": false, "Containers": {     "9ba1cfa5e902ba3f4cfebb6404d03f8c4cbe1aa418fc4ae682722c5882c88811": {  "Name": "MyNginx",  "EndpointID": "22e350022928c6e597a0bc217b84270525ab8400bb84d04387d63632f0b028eb",  "MacAddress": "02:42:ac:12:00:02",  "IPv4Address": "172.18.0.2/16",  "IPv6Address": ""     },     "45a4bca256c29842067cb324c67f3288c24b545a61cb796f4df1bfc5b1fcaae6": {  "Name": "MyMySQL",  "EndpointID": "f80a9fbd1f849a58f18b45d4d7684295e6d8e593c0b308af7215846692e2e57d",  "MacAddress": "02:42:ac:12:00:03",  "IPv4Address": "172.18.0.3/16",  "IPv6Address": ""     },     "b2268309c7e072f7212fc10efc773636676243d40067e8f4511324786701aed7": {  "Name": "MyNacos1",  "EndpointID": "2d0c0db59c5918bac6955bdc24682576d0b8301ea67097110d5a4f6a8557966e",  "MacAddress": "02:42:ac:12:00:04",  "IPv4Address": "172.18.0.4/16",  "IPv6Address": ""     },     "a07e465b71cd19c54caa26aeb58aad9714d03945d029648ec65e61affc3b1796": {  "Name": "MyNacos2",  "EndpointID": "0a5a371b04e2eb4087836a817785edaf86a356b1ad100f164328d6481a17b190",  "MacAddress": "02:42:ac:12:00:05",  "IPv4Address": "172.18.0.5/16",  "IPv6Address": ""     },     "d29eceb1c4b5d6071a8e11d75dce038f27eae5e8800cafc7cbeb97429c3d5d95": {  "Name": "MyNacos3",  "EndpointID": "79cb067cd0d3c267fc51614fc794c31d8922e334132a3ae3efaabf4dd3bb7e60",  "MacAddress": "02:42:ac:12:00:06",  "IPv4Address": "172.18.0.6/16",  "IPv6Address": ""     } }, "Options": {}, "Labels": {}    }]

5、验证上述容器能否相互 ping 通

注意：ping: command not found
解决：apt-get update + apt-get iputils-ping

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6、配置 Nacos 持久化、集群

<(￣︶￣)↗Nacos实战 - 持久化.md

  1. 从 Nacos 官网获取 Nacos 数据库构建脚本，MySQL 执行脚本搭建 Nacos 数据库

    Nacos 高可用环境搭建（基于Docker）

  2. 进入 Nacos 实例，修改 /conf/application.properties 文件，配置 Nacos 持久化

    请添加图片描述

  3. 修改 /conf/cluster.conf 配置文件，配置 Nacos 集群

    Nacos 高可用环境搭建（基于Docker）

7、验证 Nacos 持久化是否生效

  1. 重启所有 Nacos 实例

  2. 打开任意一个 Nacos 实例的控制面板，创建若干配置信息

    请添加图片描述

    请添加图片描述

  3. 检查配置信息是否存入数据库

    Nacos 高可用环境搭建（基于Docker）

    Nacos 高可用环境搭建（基于Docker）

  4. 打开其他 Nacos 实例的控制面板，检查是否获取到相同的配置信息

    请添加图片描述

    请添加图片描述

8、配置 Nginx 对 Nacos 的负载均衡

<(￣︶￣)↗Nginx 实战 - 负载均衡.md

进入 Nginx 容器，配置自定义配置文件 /etc/nginx/conf.d/nacosLoadBalance.conf

upstream serverInstance {    # ip_hash;    server 172.18.0.4:8848  weight=1;    server 172.18.0.5:8848  weight=1;    server 172.18.0.6:8848  weight=1;}server {    listen80;    server_name  127.0.0.1; location ~ /nacos/ { proxy_pass http://serverInstance; proxy_connect_timeout 10;    }}

9、验证 Nginx 负载均衡是否生效

  1. 修改 Nginx 配置文件，改变日志格式

    log_format  main  '$remote_addr --"$request"--> $http_host--> $upstream_addr [$status  $request_time]';

  2. 重启 Nginx

  3. 通过 Nginx 访问 Nacos 控制面板

    请添加图片描述

  4. 刷新若干次后查看日志文件

    172.18.0.1 --"GET /nacos/ HTTP/1.1"--> 127.0.0.1--> 172.18.0.4:8848 [200  0.012]172.18.0.1 --"GET /nacos/ HTTP/1.1"--> 127.0.0.1--> 172.18.0.5:8848 [304  0.010]172.18.0.1 --"GET /nacos/ HTTP/1.1"--> 127.0.0.1--> 172.18.0.6:8848 [304  0.009]172.18.0.1 --"GET /nacos/ HTTP/1.1"--> 127.0.0.1--> 172.18.0.4:8848 [200  0.010]172.18.0.1 --"GET /nacos/ HTTP/1.1"--> 127.0.0.1--> 172.18.0.5:8848 [200  0.010]172.18.0.1 --"GET /nacos/ HTTP/1.1"--> 127.0.0.1--> 172.18.0.6:8848 [304  0.010]
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