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后端项目部署与负载均衡

作者:互联网

建立数据库 renren_fast ,然后运行renrenfast项目中的db文件夹内的mysql.sql

1.下载后端源码,并导入到Eclipse当中,具体流程参照开发文档

注意:需要在Ecplice安装spring tools suite插件

2.修改application-dev.yml的数据库配置,连接之前配好的数据库集群的虚拟IP

url: jdbc:mysql://192.168.123.150:3306/renren_fast?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC
username: root
password: 123456

3.修改application.yml文件中的redis配置,连接之前配好的Redis集群

redis:
    open: false  # 是否开启redis缓存  true开启   false关闭
    database: 0
    #host: localhost
    #port: 6379
    #password:    # 密码(默认为空)
    timeout: 6000ms  # 连接超时时长(毫秒)
    cluster:
          nodes:
            - 192.168.123.130:5001
            - 192.168.123.130:5002
            - 192.168.123.130:5003
            - 192.168.123.130:5004
            - 192.168.123.130:5005
            - 192.168.123.130:5006

4.修改application.yml中的项目端口号为6001

将来项目要部署到Docker容器中,而Docker内部的网络是不允许跨网段访问的,所以后端项目容器要连接到Docker的host网络,使用宿主机IP。为了避免端口冲突,需要修改端口号。

# Tomcat
server:
  tomcat:
    uri-encoding: UTF-8
    max-threads: 1000
    min-spare-threads: 30
  port: 6001
  connection-timeout: 5000ms
  servlet:
    context-path: /renren-fast

5.利用Maven打包工程
renren-fast包含了tomcat.jar文件,所以工程打包成JAR文件就能独立运行

进入renren-fast目录,执行mvn命令

mvn clean install -Dmaven.test.skep=true # 跳过测试代码
# clean :表示清除之前的JAR文件;
# install :意味着打包到本地;
# -Dmaven.test.skip=true :代表跳过测试代码

打包成功后,会在项目根目录的target文件夹下生成renren-fast.jar 

6.安装Java镜像

 docker pull java

7.创建数据卷j1 ,并将renren-fast.jar复制到该目录下,用来在容器中启动该jar包

docker volume create j1
ls /var/lib/docker/volumes/j1/_data
renren-fast.jar

8.创建j1容器

docker run -it -d --restart=always --name j1 -v j1:/home/soft --net=host java

9.进入j1容器jar包所在目录,执行如下命令使后端项目在关闭终端时不挂断(nohup)并且在后台运行

#进入j1容器
docker exec -it j1 bash
#启动Java项目
nohup java -jar /home/soft/renren-fast.jar

项目启动成功后可以通过 http://192.168.123.130:6001/renren-fast/swagger/index.html 来测试后端接口

打不开需要开放6001端口

[root@localhost ~]# firewall-cmd --permanent --add-port=6001-6003/tcp
success
[root@localhost ~]# firewall-cmd --reload

10.创建负载站点

按照上述方法再在Docker中部署j2(端口6002),j3(端口6003)两个后台项目容器

注意:修改tomcat配置端口,打包

#创建数据卷,上传JAR文件
docker volume create j2
ls /var/lib/docker/volumes/j2/_data
renren-fast.jar
#启动容器
docker run -it -d --restart=always --name j2 -v j2:/home/soft --net=host java
#进入j1容器
docker exec -it j2 bash
#启动Java项目
nohup java -jar /home/soft/renren-fast.jar
​
#创建数据卷,上传JAR文件
docker volume create j3
ls /var/lib/docker/volumes/j3/_data
renren-fast.jar
#启动容器
docker run -it -d --restart=always --name j3 -v j3:/home/soft --net=host java
#进入j1容器
docker exec -it j3 bash
#启动Java项目
nohup java -jar /home/soft/renren-fast.jar

Nginx是性能非常出色的反向代理服务器,最大可以支持8万/秒的并发访问

1.安装Nginx镜像

 docker pull nginx

2.创建n1目录

mkdir /home/n1

宿主机上/home/n1/nginx.conf配置文件内容如下:


user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/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  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;
	
	proxy_redirect          off;
	proxy_set_header        Host $host;
	proxy_set_header        X-Real-IP $remote_addr;
	proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
	client_max_body_size    10m;
	client_body_buffer_size   128k;
	proxy_connect_timeout   5s;
	proxy_send_timeout      5s;
	proxy_read_timeout      5s;
	proxy_buffer_size        4k;
	proxy_buffers           4 32k;
	proxy_busy_buffers_size  64k;
	proxy_temp_file_write_size 64k;
	
	upstream tomcat {
		server 192.168.123.130:6001;
		server 192.168.123.130:6002;
		server 192.168.123.130:6003;
	}
	server {
        listen       6101;
        server_name  192.168.123.130; 
        location / {  
            proxy_pass   http://tomcat;
            index  index.html index.htm;  
        }  

    }
}

3.创建第1个Nginx节点

docker run -it -d --restart=always --name n1 -v /home/n1/nginx.conf:/etc/nginx/nginx.conf --net=host --privileged nginx

4.按照上述操作再创建一个nginx节点6102端口

mkdir /home/n2
docker run -it -d --restart=always --name n2 -v /home/n2/nginx.conf:/etc/nginx/nginx.conf --net=host --privileged nginx

参考之前Haproxy双机热备的方案,仍然采用Keepalived和虚拟IP技术。建立两个Nginx容器并各自安装Keepalived,映射到同一宿主机虚拟IP上

1.在Nginx容器安装Keepalived

#进入n1节点
docker exec -it n1 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件(如下)
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start

keepalived配置文件:

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.123.151
    }
}
virtual_server 192.168.123.151 6201 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
    real_server 192.168.123.130 6101 {
        weight 1
    }
}
#进入n2节点
docker exec -it n2 bash
#更新软件包
apt-get update
#安装VIM
apt-get install vim
#安装Keepalived
apt-get install keepalived
#编辑Keepalived配置文件(如下)
vim /etc/keepalived/keepalived.conf
#启动Keepalived
service keepalived start

keepalived配置文件:

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.123.151
    }
}
virtual_server 192.168.123.151 6201 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP
    real_server 192.168.123.130 6102 {
        weight 1
    }
}

成功访问http://192.168.123.151:6201/renren-fast/swagger/index.html代表成功

标签:负载,部署,jar,192.168,nginx,fast,均衡,docker,renren
来源: https://blog.csdn.net/Gushiyuta/article/details/94429540