1.環境準備
nacos 的官方地址
文檔手冊
https://nacos.io/zh-cn/index.html
下載頁面
https://github.com/alibaba/nacos/releases
由于服務器資源有限,方便測試,我主要采用2臺centos云服務器,并且已經具備docker swarm環境(搭建參見 docker swarm環境),來搭建4個節點的nacos集群服務:
兩臺服務器,每臺分別部署兩個nacos節點,IP及端口如下:
192.168.62.15:9851
192.168.62.15:9850
192.168.62.37:9848
192.168.62.37:9849
集群需要mysql數據庫環境支持,腳本conf/nacos-mysql.sql。
同時4個節點通過nginx通過對外服務,nginx搭建請參考其他文件,nginx配置在后面會給出。
2.docker-cluster.yml文件
通過swarm集群,配置好docker-compose文件內容,自動部署到不同的docker節點
version: '3.7'
services:
nacos_cluster_1:
container_name: nacos_cluster_1
image: nacos/nacos-server:1.2.0
restart: always
ports:
- target: 9848
published: 9848
protocol: tcp
mode: host #采用host模式(默認為ingress,配置較靈活,根據自己的需求也可調整為ingress,本案例防止nacos 采用 swarm集群調度,所以改為host模式,兩臺服務器之間通過內網及nacos端口訪問,通過nginx配置對外服務)
volumes:
- cluster1_logs:/home/nacos/logs #配置docker存儲日志的卷
environment:
PREFER_HOST_MODE: ip
NACOS_SERVERS: 192.168.62.37:9848 192.168.62.37:9849 192.168.62.15:9850 192.168.62.15:9851
NACOS_SERVER_IP: 192.168.62.37
NACOS_SERVER_PORT: 9848
NACOS_AUTH_ENABLE: 'true' #1.2.0版本默認關閉登陸界面
MYSQL_SERVICE_HOST: 192.168.62.37
MYSQL_SERVICE_DB_NAME: nacos_devtest
MYSQL_SERVICE_PORT: 23306
MYSQL_SERVICE_USER: nacos
MYSQL_SERVICE_PASSWORD: 123456
deploy:
replicas: 1 #部署時,指定部署一個副本
placement:
constraints:
- node.labels.env==docker-server-1 #根據標簽指定部署到的節點,標簽需要自己事先配置好(本案例節點docker-server-1為192.168.62.37 docker-server-2為192.168.62.15)
restart_policy:
condition: on-failure
nacos_cluster_2:
container_name: nacos_cluster_2
image: nacos/nacos-server:1.2.0
restart: always
ports:
- target: 9849
published: 9849
protocol: tcp
mode: host
volumes:
- cluster2_logs:/home/nacos/logs
environment:
PREFER_HOST_MODE: ip
NACOS_SERVERS: 192.168.62.37:9848 192.168.62.37:9849 192.168.62.15:9850 192.168.62.15:9851
NACOS_SERVER_IP: 192.168.62.37
NACOS_SERVER_PORT: 9849
NACOS_AUTH_ENABLE: 'true'
MYSQL_SERVICE_HOST: 192.168.62.37
MYSQL_SERVICE_DB_NAME: nacos_devtest
MYSQL_SERVICE_PORT: 23306
MYSQL_SERVICE_USER: nacos
MYSQL_SERVICE_PASSWORD: 123456
deploy:
replicas: 1
placement:
constraints:
- node.labels.env==docker-server-1
restart_policy:
condition: on-failure
nacos_cluster_3:
container_name: nacos_cluster_3
image: nacos/nacos-server:1.2.0
restart: always
ports:
- target: 9850
published: 9850
protocol: tcp
mode: host
volumes:
- cluster3_logs:/home/nacos/logs
environment:
PREFER_HOST_MODE: ip
NACOS_SERVERS: 192.168.62.37:9848 192.168.62.37:9849 192.168.62.15:9850 192.168.62.15:9851
NACOS_SERVER_IP: 192.168.62.15
NACOS_SERVER_PORT: 9850
NACOS_AUTH_ENABLE: 'true'
MYSQL_SERVICE_HOST: 192.168.62.37
MYSQL_SERVICE_DB_NAME: nacos_devtest
MYSQL_SERVICE_PORT: 23306
MYSQL_SERVICE_USER: nacos
MYSQL_SERVICE_PASSWORD: 123456
deploy:
replicas: 1
placement:
constraints:
- node.labels.env==docker-server-2
restart_policy:
condition: on-failure
nacos_cluster_4:
container_name: nacos_cluster_4
image: nacos/nacos-server:1.2.0
restart: always
ports:
- target: 9851
published: 9851
protocol: tcp
mode: host
volumes:
- cluster4_logs:/home/nacos/logs
environment:
PREFER_HOST_MODE: ip
NACOS_SERVERS: 192.168.62.37:9848 192.168.62.37:9849 192.168.62.15:9850 192.168.62.15:9851
NACOS_SERVER_IP: 192.168.62.15
NACOS_SERVER_PORT: 9851
NACOS_AUTH_ENABLE: 'true'
MYSQL_SERVICE_HOST: 192.168.62.37
MYSQL_SERVICE_DB_NAME: nacos_devtest
MYSQL_SERVICE_PORT: 23306
MYSQL_SERVICE_USER: nacos
MYSQL_SERVICE_PASSWORD: 123456
deploy:
replicas: 1
placement:
constraints:
- node.labels.env==docker-server-2
restart_policy:
condition: on-failure
volumes:
cluster1_logs:
cluster2_logs:
cluster3_logs:
cluster4_logs:
3.啟動
docker stack deploy -c docker-cluster.yml nacos_cluster
采用stack部署,會根據配置文件中部署條件,按照docker節點標簽部署到不同的節點上,每個docker節點部署2個nacos節點
4.Nginx代理配置
nginx配置文件添加
upstream nacos {
server 192.168.62.37:9848 weight=1 max_fails=2 fail_timeout=10s;
server 192.168.62.37:9849 weight=1 max_fails=2 fail_timeout=10s;
server 192.168.62.15:9850 weight=1 max_fails=2 fail_timeout=10s;
server 192.168.62.15:9851 weight=1 max_fails=2 fail_timeout=10s;
}
location /nacos/ {
proxy_pass http://nacos;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header REMOTE-HOST $remote_addr;
add_header X-Cache $upstream_cache_status;
add_header Cache-Control no-cache;
}
5.web訪問是否成功
在瀏覽器輸入:http://nginxIP:端口/nacos/index.html訪問,如下:表示部署成功
節點列表