基于springboot部署jar包通过nginx负载均衡

概括

1、请求示意图;
2、springboot打包;
3、springboot部署发布;
4、配置nginx的nginx.conf;
5、防火墙开放端口;
6、测试运行;

1、请求示意图

2、springboot打包

3、springboot部署发布

controller

@Slf4j
@RestController
@RequestMapping("/index")
public class IndexController {

    @Value("${server.port}")
    private String port;

    @GetMapping("/getMsg/{name}")
    public Object getMsg(@PathVariable("name") String name) {
        log.info(" getMsg ======> param: name->{}", name);
        log.info(" getMsg ======> param: port->{}", port);
        return name +"  :  "+ port + "  ok";
    }
}

本地访问

部署发布

[[e-mail] application]# pwd
/usr/local/application
[[e-mail] application]# ls
demo1.jar  demo2.jar 
[[e-mail] application]# nohup java -jar demo1.jar --server.port=9090 >> demo1.log &
[[e-mail] application]# nohup java -jar demo2.jar --server.port=9091 >> demo2.log &
[[e-mail] sbin]# ps -ef|grep java
root       1856      1  0 10:44 tty1     00:00:06 /opt/jdk8/jdk1.8.0_161/bin/java -Djava.util.logging.config.file=/opt/tomcat8/apache-tomcat-8.5.53/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Dignore.endorsed.dirs= -classpath /opt/tomcat8/apache-tomcat-8.5.53/bin/bootstrap.jar:/opt/tomcat8/apache-tomcat-8.5.53/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat8/apache-tomcat-8.5.53 -Dcatalina.home=/opt/tomcat8/apache-tomcat-8.5.53 -Djava.io.tmpdir=/opt/tomcat8/apache-
tomcat-8.5.53/temp org.apache.catalina.startup.Bootstrap start
root       1967   1893  1 10:47 pts/0    00:00:16 java -jar demo1.jar --server.port=9090
root       2086   1893  1 10:55 pts/0    00:00:14 java -jar demo2.jar --server.port=9091
root       2879   1893  0 11:10 pts/0    00:00:00 grep --color=auto java
[[e-mail] application]# tail -f demo1.log 

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::       (v2.1.16.RELEASE)

2020-08-08 10:47:49.582  INFO 1967 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication v0.0.1-SNAPSHOT on sentos with PID 1967 (/usr/local/application/demo1.jar started by root in /usr/local/application)
2020-08-08 10:47:49.592  INFO 1967 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2020-08-08 10:47:51.278  INFO 1967 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 9090 (http)
2020-08-08 10:47:51.328  INFO 1967 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-08-08 10:47:51.328  INFO 1967 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.37]
2020-08-08 10:47:51.450  INFO 1967 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-08-08 10:47:51.450  INFO 1967 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1758 ms
2020-08-08 10:47:51.755  INFO 1967 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-08-08 10:47:52.220  INFO 1967 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 9090 (http) with context path ''
2020-08-08 10:47:52.223  INFO 1967 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 3.598 seconds (JVM running for 4.355)
[[e-mail] application]# tail -f demo2.log
2020-08-08 10:55:03.963  INFO 2086 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication v0.0.1-SNAPSHOT on sentos with PID 2086 (/usr/local/application/demo2.jar started by root in /usr/local/application)
2020-08-08 10:55:03.966  INFO 2086 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2020-08-08 10:55:05.386  INFO 2086 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 9091 (http)
2020-08-08 10:55:05.430  INFO 2086 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-08-08 10:55:05.430  INFO 2086 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.37]
2020-08-08 10:55:05.551  INFO 2086 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-08-08 10:55:05.551  INFO 2086 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1504 ms
2020-08-08 10:55:05.836  INFO 2086 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-08-08 10:55:06.149  INFO 2086 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 9091 (http) with context path ''
2020-08-08 10:55:06.153  INFO 2086 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 2.779 seconds (JVM running for 3.335)

4、配置nginx的nginx.conf

	keepalive_timeout  65;
    #gzip  on;
	
	# 负载均衡策略
    upstream servers{
		#每3个请求192.168.0.104:9090处理1个,192.168.0.104:9091处理2个
		server 192.168.0.104:9090 weight=1;
		server 192.168.0.104:9091 weight=2;
    }
	
    server {
        listen       80;
        server_name  localhost;

        location / {
            root   html;
            index  index.html index.htm;
			proxy_pass http://servers;
    }

启动nginx

[[e-mail] sbin]# ./nginx 
[[e-mail] sbin]# ps -ef |grep nginx 
root       2507      1  0 11:02 ?        00:00:00 nginx: master process ./nginx
nobody     2508   2507  0 11:02 ?        00:00:00 nginx: worker process
nobody     2509   2507  0 11:02 ?        00:00:00 nginx: worker process
root       2514   1893  0 11:02 pts/0    00:00:00 grep --color=auto nginx

5、防火墙开放端口

[[e-mail] application]# firewall-cmd --zone=public --add-port=9090/tcp --permanent
success
[[e-mail] application]# firewall-cmd --zone=public --add-port=9091/tcp --permanent
success
[[e-mail] application]# firewall-cmd --zone=public --add-port=80/tcp --permanent
success
[[e-mail] application]# firewall-cmd --reload
success
[[e-mail] application]# firewall-cmd --list-ports
3306/tcp 80/tcp 6379/tcp 9090/tcp 9091/tcp

6、测试运行