使用supervisor和ngix配置多线程的负载均衡

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使用supervisor开启多个线程

ubuntu下使用apt-get安装supervisor

# apt-get install supervisor

然后,给我们自己开发的应用程序编写一个配置文件,让supervisor来管理它。每个进程的配置文件都可以单独分拆,放在/etc/supervisor/conf.d/目录下,以.conf作为扩展名,例如,hdpt.conf定义了一个gunicorn的进程

[group:hdpt]  # 组名programs=hdpt-web  # 参数名[program:hdpt-web]  # 参数名一致user=root  # root用户directory=/data/www/vhosts/hdpt-backend  # 项目路径command=python3 main.py 120%(process_num)02d  # 要执行的命令 端口号为120**,02d表示占位2个,process_num=numprocs=10,表示从0(12000)开始,连续开启10个端口,到10(12010)。process_name = %(program_name)s%(process_num)d # 定义进程的名字 program_name加进程序列,例如:hdpt-web6autorestart=true  # 设置 进程挂掉之后 自动重启redirect_stderr=true  # 设置允许指定log日志输出位置stdout_logfile=/data/www/vhosts/hdpt-backend/log/tornado.log  # 指定log日志输出位置stdout_logfile_maxbytes=500MB  # 指定log日志大小stdout_logfile_backups=50  # stdout日志文件循环保存时的stdout_logfile备份数。如果设置为0,则不会保留备份。stderr_logfile=/data/www/vhosts/hdpt-backend/log/tornado.log loglevel=info  # 记录级别,指示写入supervisord活动日志的内容。 关键,错误,警告,信息,调试,跟踪或愚蠢之一。 请注意,在日志级别调试时,supervisord日志文件将记录其子进程的stderr / stdout输出以及关于进程状态更改的扩展信息信息,这对于调试未正确启动的进程非常有用。numprocs = 10  # 进程个数numprocs_start = 1 # 从12001开始占用端口 

重载配置文件

# supervisorctl reloadRestarted supervisord

启动用户组下的程序

# supervisorctl start hdpt:*

查看线程启动情况

root@panjikejiproduce:/etc/supervisor/conf.d# supervisorctl statushdpt:hdpt-web1                   RUNNING    pid 27267, uptime 0:21:12hdpt:hdpt-web10                  RUNNING    pid 27260, uptime 0:21:13hdpt:hdpt-web2                   RUNNING    pid 27265, uptime 0:21:12hdpt:hdpt-web3                   RUNNING    pid 27266, uptime 0:21:12hdpt:hdpt-web4                   RUNNING    pid 27263, uptime 0:21:13hdpt:hdpt-web5                   RUNNING    pid 27264, uptime 0:21:12hdpt:hdpt-web6                   RUNNING    pid 27261, uptime 0:21:13hdpt:hdpt-web7                   RUNNING    pid 27262, uptime 0:21:13hdpt:hdpt-web8                   RUNNING    pid 27268, uptime 0:21:12hdpt:hdpt-web9                   RUNNING    pid 27269, uptime 0:21:12

查看端口占用时候否正确

# netstat -pan | grep 27260tcp        0      0 0.0.0.0:12010           0.0.0.0:*               LISTEN      27260/python3   tcp        0      0 127.0.0.1:49417         127.0.0.1:27017         ESTABLISHED 27260/python3   tcp        0      0 127.0.0.1:49418         127.0.0.1:27017         ESTABLISHED 27260/python3   tcp        0      0 127.0.0.1:49439         127.0.0.1:27017         ESTABLISHED 27260/python3   tcp6       0      0 :::12010                :::*                    LISTEN      27260/python3  

27260是hdpt:hdpt-web10的pid,通过查看端口占用可见27260确实是占用的12010这个端口

配置ngix的负载均衡

修改/etc/nginx/sites-enabled/hdpt,在其中添加一个端口映射,upstream,并修改proxy_pass。

原文件

server {  listen 80;  server_name www.huodipingtai.com huodipingtai.com;  client_max_body_size 50m;  listen 443;  ssl on;  ssl_certificate /data/www/vhosts/hdpt-ssl/chained.pem;  ssl_certificate_key /data/www/vhosts/hdpt-ssl/domain.key;  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;  ssl_prefer_server_ciphers on;  ssl_session_timeout 10m;  ssl_session_cache shared:SSL:10m;  ssl_stapling on;  ssl_stapling_verify on;  ssl_trusted_certificate /data/www/vhosts/hdpt-ssl/signed.crt;  resolver 8.8.4.4 8.8.8.8 valid=300s;  resolver_timeout 10s;  location /.well-known/acme-challenge/ {  alias /data/www/vhosts/hdpt-acme-challenge/;  }  location / {  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  proxy_pass http://127.0.0.1:8889;  }  location /static/ {  alias /data/www/vhosts/hdpt-backend/static/;  }  access_log /var/log/nginx/hdpt-backend.access_log;  error_log /var/log/nginx/hdpt-backend.error_log;}

修改后的文件

# 添加了upstream,映射到12001到12010这10个端口。upstream tornadoes {    ip_hash;    server 127.0.0.1:12001;    server 127.0.0.1:12002;    server 127.0.0.1:12003;    server 127.0.0.1:12004;    server 127.0.0.1:12005;    server 127.0.0.1:12006;    server 127.0.0.1:12007;    server 127.0.0.1:12008;    server 127.0.0.1:12009;    server 127.0.0.1:12010;}server {  listen 80;  server_name www.huodipingtai.com huodipingtai.com;  client_max_body_size 50m;  listen 443;  ssl on;  ssl_certificate /data/www/vhosts/hdpt-ssl/chained.pem;  ssl_certificate_key /data/www/vhosts/hdpt-ssl/domain.key;  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;  ssl_prefer_server_ciphers on;  ssl_session_timeout 10m;  ssl_session_cache shared:SSL:10m;  ssl_stapling on;  ssl_stapling_verify on;  ssl_trusted_certificate /data/www/vhosts/hdpt-ssl/signed.crt;  resolver 8.8.4.4 8.8.8.8 valid=300s;  resolver_timeout 10s;  location /.well-known/acme-challenge/ {  alias /data/www/vhosts/hdpt-acme-challenge/;  }  location / {  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  proxy_pass http://tornadoes;  # 修改了这里 使用映射关系  }  location /static/ {  alias /data/www/vhosts/hdpt-backend/static/;  }  access_log /var/log/nginx/hdpt-backend.access_log;  error_log /var/log/nginx/hdpt-backend.error_log;}
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