SpringCloud 2.x学习笔记：21、Nacos集群模式部署

一时失言乱红尘 2021-12-20 13:19 335阅读 0赞

## 1、Nacos集群模式部署 ##

官方参考文档  
[https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html][https_nacos.io_zh-cn_docs_cluster-mode-quick-start.html]

### 1.1 编辑集群配置文件 ###

分别在三个节点上编辑集群配置文件

[root@elastic3 conf]# vi cluster.conf
    [root@elastic3 conf]# cat cluster.conf
    # ip:port
    10.xx.xx.xx1:8848
    10.xx.xx.xx2:8848
    10.xx.xx.xx3:8848

### 1.2 启动集群节点 ###

`sh startup.sh`

[root@elastic3 ~]# sh /app/nacos/bin/startup.sh
    /opt/jdk1.8.0_161/bin/java  -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/app/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Djava.ext.dirs=/opt/jdk1.8.0_161/jre/lib/ext:/opt/jdk1.8.0_161/lib/ext:/app/nacos/plugins/cmdb:/app/nacos/plugins/mysql -Xloggc:/app/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/app/nacos -Dloader.path=/app/nacos/plugins/health -jar /app/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/app/nacos/conf/ --logging.config=/app/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
    nacos is starting，you can check the /app/nacos/logs/start.out
    [root@elastic3 ~]# tailf /app/nacos/logs/start.out
    2019-06-28 16:34:02,152 INFO Nacos is starting...
    
    2019-06-28 16:34:02,771 INFO Nacos Log files: /app/nacos/logs/
    
    2019-06-28 16:34:02,771 INFO Nacos Conf files: /app/nacos/conf/
    
    2019-06-28 16:34:02,771 INFO Nacos Data files: /app/nacos/data/
    
    2019-06-28 16:34:02,771 INFO Nacos started successfully in cluster mode.

[root@elastic2 ~]# sh /app/nacos/bin/startup.sh
    /opt/jdk1.8.0_161/bin/java  -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/app/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Djava.ext.dirs=/opt/jdk1.8.0_161/jre/lib/ext:/opt/jdk1.8.0_161/lib/ext:/app/nacos/plugins/cmdb:/app/nacos/plugins/mysql -Xloggc:/app/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/app/nacos -Dloader.path=/app/nacos/plugins/health -jar /app/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/app/nacos/conf/ --logging.config=/app/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
    nacos is starting，you can check the /app/nacos/logs/start.out
    [root@elastic2 ~]# tailf /app/nacos/logs/start.out
    2019-06-28 16:34:39,363 INFO Nacos is starting...
    
    2019-06-28 16:34:39,662 INFO Nacos Log files: /app/nacos/logs/
    
    2019-06-28 16:34:39,662 INFO Nacos Conf files: /app/nacos/conf/
    
    2019-06-28 16:34:39,662 INFO Nacos Data files: /app/nacos/data/
    
    2019-06-28 16:34:39,663 INFO Nacos started successfully in cluster mode.

[root@elastic1 ~]# sh /app/nacos/bin/startup.sh
    /opt/jdk1.8.0_161/bin/java  -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/app/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Djava.ext.dirs=/opt/jdk1.8.0_161/jre/lib/ext:/opt/jdk1.8.0_161/lib/ext:/app/nacos/plugins/cmdb:/app/nacos/plugins/mysql -Xloggc:/app/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/app/nacos -Dloader.path=/app/nacos/plugins/health -jar /app/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/app/nacos/conf/ --logging.config=/app/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
    nacos is starting，you can check the /app/nacos/logs/start.out
    [root@elastic1 ~]# tailf /app/nacos/logs/start.out
    2019-06-28 16:34:40,691 INFO Nacos is starting...
    
    2019-06-28 16:34:41,697 INFO Nacos is starting...
    
    2019-06-28 16:34:42,697 INFO Nacos is starting...
    
    2019-06-28 16:34:43,698 INFO Nacos is starting...
    
    2019-06-28 16:34:44,700 INFO Nacos is starting...
    
    2019-06-28 16:34:45,702 INFO Nacos is starting...
    
    2019-06-28 16:34:46,599 INFO Nacos Log files: /app/nacos/logs/
    
    2019-06-28 16:34:46,600 INFO Nacos Conf files: /app/nacos/conf/
    
    2019-06-28 16:34:46,600 INFO Nacos Data files: /app/nacos/data/
    
    2019-06-28 16:34:46,600 INFO Nacos started successfully in cluster mode.

### 1.3 运行效果 ###

[http://10.17.xx.xxx:8848/nacos/][http_10.17.xx.xxx_8848_nacos]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70]

## 2、Proxy配置 ##

### 2.1 Nacos的集群架构 ###

根据官方文档的介绍 [https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html，][https_nacos.io_zh-cn_docs_cluster-mode-quick-start.html 1]  
Nacos的集群架构如下图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 1]  
通过上面，我们已经成功启动了三个节点的Nacos集群。  
根据架构图所示，我们还需要提供一个统一的入口给Spring Cloud应用访问，也即是需要为上面启动的的3个Nacos集群做一个负载均衡的访问层。

下面通过Nginx来实现。

### 2.2 Nginx编译与安装 ###

参考之前的文章  
[https://blog.csdn.net/chengyuqiang/article/details/54587702][https_blog.csdn.net_chengyuqiang_article_details_54587702]

### 2.3 配置文件 ###

[root@elastic3 nginx-1.16.0]# cd /usr/local/nginx/
    [root@elastic3 nginx]# ll
    total 36
    drwx------ 2 nobody root 4096 Jun 28 17:28 client_body_temp
    drwxr-xr-x 2 root   root 4096 Jun 28 17:28 conf
    drwx------ 2 nobody root 4096 Jun 28 17:28 fastcgi_temp
    drwxr-xr-x 2 root   root 4096 Jun 28 17:28 html
    drwxr-xr-x 2 root   root 4096 Jun 28 17:28 logs
    drwx------ 2 nobody root 4096 Jun 28 17:28 proxy_temp
    drwxr-xr-x 2 root   root 4096 Jun 28 17:28 sbin
    drwx------ 2 nobody root 4096 Jun 28 17:28 scgi_temp
    drwx------ 2 nobody root 4096 Jun 28 17:28 uwsgi_temp
    [root@elastic3 nginx]#

[root@elastic3 nginx]# vim conf/nginx.conf

#user  nobody;
    worker_processes  1;
    
    #error_log  logs/error.log;
    #error_log  logs/error.log  notice;
    #error_log  logs/error.log  info;
    
    pid        logs/nginx.pid;
    
    #工作模式及连接数上限
    events {
        worker_connections  1024;
    }
    
    #设定http服务器，利用它的反向代理功能提供负载均衡支持
    http {
        include       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  logs/access.log  main;
    
        sendfile        on;
        #tcp_nopush     on;
    
        #keepalive_timeout  0;
        #连接超时时间
        keepalive_timeout  120;
        #gzip  on;
        #设定负载均衡的服务器列表
        upstream nacos{
            #weigth参数表示权值，权值越高被分配到的几率越大
            server 10.17.12.158:8848 weight=5;
            server 10.17.12.159:8848 weight=5;
            server 10.17.12.160:8848 weight=5;
        }
        server {
            listen       8080;
            server_name  localhost;
    
            #charset koi8-r;
            #编码格式
            charset utf-8;
    
            #access_log  logs/host.access.log  main;
    
            location / {
                root   html;
                index  index.html index.htm;
                #请求转向my_server1定义的服务器列表
                proxy_pass http://nacos;
            }
           #error_page  404              /404.html;
    
            # redirect server error pages to the static page /50x.html
            #
            error_page   500 502 503 504  /50x.html;
            location = /50x.html {
                root   html;
            }
        }

### 2.4 重新加载配置文件 ###

[root@elastic3 nginx]# sbin/nginx -s reload

### 2.5 运行效果 ###

[http://10.17.12.160:8080/nacos][http_10.17.12.160_8080_nacos]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 3]

[https_nacos.io_zh-cn_docs_cluster-mode-quick-start.html]: https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html
[http_10.17.xx.xxx_8848_nacos]: http://10.17.xx.xxx:8848/nacos/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70]: /images/20211220/8a89eb5fcb3249299dca96bc5ca2db75.png
[https_nacos.io_zh-cn_docs_cluster-mode-quick-start.html 1]: https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html%EF%BC%8C
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 1]: /images/20211220/d1110f2314f044dfa1b3739ade10ba64.png
[https_blog.csdn.net_chengyuqiang_article_details_54587702]: https://blog.csdn.net/chengyuqiang/article/details/54587702
[http_10.17.12.160_8080_nacos]: http://10.17.12.160:8080/nacos
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 2]: /images/20211220/1e096af3ba3640afa2d5fbfcdcaff510.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5neXVxaWFuZw_size_16_color_FFFFFF_t_70 3]: /images/20211220/c8724b00f2674879a652934a81001a12.png