This is the command multiwatch that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
multiwatch - forks and watches multiple instances of a program in the same environment
SYNOPSIS
multiwatch [options] -- <application> [app arguments]
multiwatch -v
multiwatch --help | -?
DESCRIPTION
multiwatch is used to fork and watch multiple FastCGI backends.
OPTIONS
-f, --forks=children
Number of children to fork and watch (default 1)
-r, --retry=retries
Number of retries to fork a single child (default 3)
-t, --timeout=msecs
Retry timeout in ms; if the child dies after the timeout the retry counter is
reset (default 10000 ms = 10 s)
-s, --signal=signame
Signal to send to children to signal 'graceful' termination
(HUP,INT,QUIT,TERM,USR1,USR2, default is USR1)
-?, --help
General usage instructions
-v, --version
Show version and exit
SIGNAL HANDLING
multiwatch will forward the signal USR2; if it receives HUP,INT,QUIT,TERM or USR1, it will
send the signal from --signal to the children; if it receives another signal from that
group, it will forward the signal again.
A signal of the group HUP,INT,QUIT,TERM and USR1 tells multiwatch to go into "shutdown"
mode, so it won't restart children after receiving it.
EXAMPLE
Spawn 2 rails instances on the same FastCGI socket (and supervise them):
spawn-fcgi -s /tmp/fastcgi-rails.sock -n -- /usr/bin/multiwatch -f 2
/home/rails/public/dispatch.fcgi
Use multiwatch online using onworks.net services