tornado + nginx + supervisord 环境部署

学习tornado有一周多了，自己按着demo中的例子手动搬代码，收获还是有的，加深了理解。demo: http://demo.pythoner.com/itt2zh/ch8.html
大概明白了它怎么工作后，开始部署一个线上环境跑跑。

nginx: 分配客户端请求给upstream组中列出的Tornado实例。其中静态目录的文件由nginx直接提供。

supervisord: tornado进程管理。

tornado: 功能实现。

关于nginx

在/etc/nginx/site-enable/default中 新增：

upstream frontends{
server 127.0.0.1:8880;
}

server {
listen 8000;

location / {
proxy_read_timeout 1800;
proxy_pass_header Server;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Scheme $scheme;
proxy_pass http://frontends; }
}

关于supervisord

确认是否已install supervisord，安装后可查看状态“sudo supervisorctl status”;

$ vi /etc/supervisor/supervisord.conf

; supervisor config file

[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

"

[include]
files = /etc/supervisor/conf.d/*.conf

"

把supervisord 加入

/etc/init.d

中， 把保存为

supervisord

, 内容如下：

#! /bin/sh
#
# skeleton  example file to build /etc/init.d/ scripts.
#       This file should be used to construct scripts for /etc/init.d.
#
#       Written by Miquel van Smoorenburg <miquels@cistron.nl>.
#       Modified for Debian
#       by Ian Murdock <imurdock@gnu.ai.mit.edu>.
#               Further changes by Javier Fernandez-Sanguino <jfs@debian.org>
#
# Version:  @(#)skeleton  1.9  26-Feb-2001  miquels@cistron.nl
#
### BEGIN INIT INFO
# Provides:          supervisor
# Required-Start:    $remote_fs $network $named
# Required-Stop:     $remote_fs $network $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/stop supervisor
# Description:       Start/stop supervisor daemon and its configured
#                    subprocesses.
### END INIT INFO

. /lib/lsb/init-functions

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/supervisord
NAME=supervisord
DESC=supervisor

test -x $DAEMON || exit 0

LOGDIR=/var/log/supervisor
PIDFILE=/var/run/$NAME.pid
DODTIME=5                   # Time to wait for the server to die, in seconds
# If this value is set too low you might not
# let some servers to die gracefully and
# 'restart' will not work

# Include supervisor defaults if available
if [ -f /etc/default/supervisor ] ; then
. /etc/default/supervisor
fi
DAEMON_OPTS="-c /etc/supervisor/supervisord.conf $DAEMON_OPTS"

set -e

running_pid()
{
# Check if a given process pid's cmdline matches a given name
pid=$1
name=$2
[ -z "$pid" ] && return 1
[ ! -d /proc/$pid ] &&  return 1
(cat /proc/$pid/cmdline | tr "\000" "\n"|grep -q $name) || return 1
return 0
}

running()
{
# Check if the process is running looking at /proc
# (works for all users)

# No pidfile, probably no daemon present
[ ! -f "$PIDFILE" ] && return 1
# Obtain the pid and check it against the binary name
pid=`cat $PIDFILE`
running_pid $pid $DAEMON || return 1
return 0
}

force_stop() {
# Forcefully kill the process
[ ! -f "$PIDFILE" ] && return
if running ; then
kill -15 $pid
# Is it really dead?
[ -n "$DODTIME" ] && sleep "$DODTIME"s
if running ; then
kill -9 $pid
[ -n "$DODTIME" ] && sleep "$DODTIME"s
if running ; then
echo "Cannot kill $LABEL (pid=$pid)!"
exit 1
fi
fi
fi
rm -f $PIDFILE
return 0
}

case "$1" in
start)
echo -n "Starting $DESC: "
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--startas $DAEMON -- $DAEMON_OPTS
test -f $PIDFILE || sleep 1
if running ; then
echo "$NAME."
else
echo " ERROR."
fi
;;
stop)
echo -n "Stopping $DESC: "
start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
echo "$NAME."
;;
force-stop)
echo -n "Forcefully stopping $DESC: "
force_stop
if ! running ; then
echo "$NAME."
else
echo " ERROR."
fi
;;
#reload)
#
#   If the daemon can reload its config files on the fly
#   for example by sending it SIGHUP, do it here.
#
#   If the daemon responds to changes in its config file
#   directly anyway, make this a do-nothing entry.
#
# echo "Reloading $DESC configuration files."
# start-stop-daemon --stop --signal 1 --quiet --pidfile \
#   /var/run/$NAME.pid --exec $DAEMON
#;;
force-reload)
#
#   If the "reload" option is implemented, move the "force-reload"
#   option to the "reload" entry above. If not, "force-reload" is
#   just the same as "restart" except that it does nothing if the
#   daemon isn't already running.
# check wether $DAEMON is running. If so, restart
start-stop-daemon --stop --test --quiet --pidfile $PIDFILE \
--startas $DAEMON \
&& $0 restart \
|| exit 0
;;
restart)
echo -n "Restarting $DESC: "
start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
[ -n "$DODTIME" ] && sleep $DODTIME
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--startas $DAEMON -- $DAEMON_OPTS
echo "$NAME."
;;
status)
echo -n "$LABEL is "
if running ;  then
echo "running"
else
echo " not running."
exit 1
fi
;;
*)
N=/etc/init.d/$NAME
# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $N {start|stop|restart|force-reload|status|force-stop}" >&2
exit 1
;;
esac

exit 0

View Code
同时 也参见 https://github.com/Supervisor/initscripts

完成后即可在/etc/supervisor/conf.d/ 目录下$vi tornado_demo.conf

[program:tornado_demo]
command=python /var/www/tornado_example/munger/main.py --port=8880
autostart=true
autorestart=true
redirect_stderr=true
stdout_logfile = /var/log/munger/munger.log
stderr_logfile = /var/log/munger/error.log

关于tornado

实例使用 http://demo.pythoner.com/itt2zh/ch2.html

2.3 复杂示例：The Alpha Munger 例子即可。

其中 重点需要关注的是supervisord的用法。

1. sudo supervisorctl stop tornado_demo

2. sudo supervisorctl start tornado_demo

3. sudo supervisorctl status

4. sudo /etc/init.d/supervisor start/stop/restart/reload

修改*.conf文件后，需要reload

参考链接：

1. http://gracece.com/2014/03/Tornado-supervisor+nginx/

2. http://blog.csdn.net/tengzhaorong/article/details/12833157

3. https://serholiu.com/tornado-nginx-supervisord

4. http://serverfault.com/questions/718689/how-to-configure-a-newer-version-of-supervisord-to-start-on-system-boot-in-ubunt