Supervisord requires that the programs it is configured to run don’t daemonize themselves. Instead, they should run in the foreground and respond to the stop signal (TERM by default) by properly shutting down.

Use Following shell script to wrapper your background program.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

#!/bin/bash
# run something background
./run &
# get nearest running background pid
$PID=$!
# Perform program exit housekeeping
function clean_up {
  # dosomething for cleanup
  rm -rf dump_file
  # remove trap
  trap - SIGHUP SIGINT SIGTERM SIGQUIT SIGKILL
  exit $?
}
# Add trap for catch sistem signal
trap clean_up SIGHUP SIGINT SIGTERM SIGQUIT SIGKILL
wait $PID

Comment and share

傳統init.d的取代方案，比init.d好寫很多
http://upstart.ubuntu.com/index.html

description "Gunicorn server for superlists-staging.ottg.eu"

start on net-device-up #start after net OK
stop on shutdown

respawn #restart if crash

setuid elspeth #user
chdir /home/elspeth/sites/superlists-staging.ottg.eu/source #working directory

#execute command
exec ../virtualenv/bin/gunicorn \
    --bind unix:/tmp/superlists-staging.ottg.eu.socket \
    --access-logfile ../access.log \
    --error-logfile ../error.log \
    superlists.wsgi:application

sudo start gunicorn-superlists-staging.ottg.eu
sudo stop gunicorn-superlists-staging.ottg.eu
sudo restart gunicorn-superlists-staging.ottg.eu

Comment and share

ex: 將aaa改為n1

1. 修改 /etc/hosts

   1 2 3

   127.0.0.1 aaa => 127.0.0.1 n1

2. 修改/etc/sysconfig/network

   1 2	NETWORKING=yes HOSTNAME=n1

3. reboot

4. hostname

Comment and share

Linux跟環境變數有關的檔案有兩個
/etc/profile
/etc/bashrc

理論上來說/etc/profile已是全域環境變數
但若是使用非互動式bash(程式大部分會用這個)
則會用到/etc/bashrc檔案

未免麻煩兩個都加就是了

1
2

JAVA_HOME=/usr/java/jdk1.7.0_55
PATH=$PATH:$JAVA_HOME/bin/

Comment and share