tornado nginx supervisor
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安装:sudo apt-get install python-tornado
sudo apt-get install nginx
sudo apt-get install supervisor
1. 配置nginx。我安装的nginx的目录为2个配置文件。/etc/nginx/nginx.conf 和 /etc/nginx/conf.d/foo.conf.
实际上是nginx.conf包含了文件foo.conf
所以如果没有特殊需求,就不需要更改nginx.conf了,在conf.d文件夹下新建你的conf文件。
foo.conf的内容;
upstream foo { #ip_hash; #consistent_hash $args;这里就是你需要nginx帮你代理的端口,下面的意思是将访问80端口的请求分配到6900,6901,6902上去。其他的无需更改。如果你不用supervisor,那就需要手工运行你的web程序,监听6900,6901,6902 server 127.0.0.1:6900 weight=1 max_fails=2 fail_timeout=30s; server 127.0.0.1:6901 weight=1 max_fails=2 fail_timeout=30s; server 127.0.0.1:6902 weight=1 max_fails=2 fail_timeout=30s; }server { listen 80; server_tag off; index index.html; charset utf-8; location / { proxy_read_timeout 100; proxy_pass_header User-Agent; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Scheme $scheme; proxy_set_header Accept-Encoding 'gzip'; proxy_pass http://foo; proxy_redirect off; proxy_store off; } location /stat { stub_status on; access_log off; } proxy_buffering off;}
3. 运行nginx:sudo /usr/sbin/nginx
如果发生这个错误:
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
原因是80已经被占用了,很有可能是被nginx占用了,
找到进程结束掉或者结束掉nginx进程。/usr/sbin/nginx -s stop
4. /etc/supervisor/supervisord.conf内容:()
[unix_http_server]
file=/var/run//supervisor.sock ; (the path to the socket file)
chmod=0700 ; sockef file mode (default 0700)
[supervisord]
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor ; ('AUTO' child log dir, default $TEMP)
; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
[supervisorctl]
serverurl=unix:///var/run//supervisor.sock ; use a unix:// URL for a unix socket
; The [include] section can just contain the "files" setting. This
; setting can list multiple files (separated by whitespace or
; newlines). It can also contain wildcards. The filenames are
; interpreted as relative to this file. Included files *cannot*
; include files themselves.
[include]
files = /etc/supervisor/conf.d/*.conf##这里就是include了具体的配置文件,你需要在/etc/supervisor/conf.d/文件夹下新建conf文件。
比如你在conf.d文件夹下新建的tornado.conf的文件
[program:tornado-80]command=python /var/www/starter.py 6901 #这里就是运行web,如果跟nginx结合,还需要监听6902,6900端口directory=/var/www/user=www-dataautorestart=trueredirect_stderr=truestdout_logfile=/var/log/tornado.logloglevel=info
启动supervisor:
Usage: /etc/init.d/supervisord {start|stop|restart|force-reload|status|force-stop}
进入supervisor命令行:
sudo supervisorctl
5. 守护supervisor进程:
#!/bin/shpywebn=`ps aux | grep supervisord | grep -v "grep" | wc -l`; #wc -l 的意思是输出文件的行数,如果不等于1,则说明没有运行了,需要再启动下if [ "$pywebn" != "1" ]; then sleep 1; /usr/bin/python /usr/local/bin/supervisord -c /etc/supervisord.conf;else break;fi
6. 排错
INFO gave up: tornado entered FATAL state, too many start retries too quickly
这个网上有很多个情况,基本上是因为你的程序执行了就退出了,然后又执行,又退出,导致的
要看看你的程序是否有问题,我的情况是python web.py 80 的时候就有问题,换成python web.py 8888 就没问题了。
直接在shell中执行python web.py 80 就没有问题
如果supervisor有问题,除了需要看/var/log/supervisor/supervisord.log还要看你配置的log,如/var/log/tornado.log
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