Re: supervise not running

On Mon, 15 Sep 2008, Larry Weldon wrote:

> Yes. In fact I was thus pointed in a new direction. I found a kernel
> option - nopinit - no parallel init - which stops the kernel from
> running the rc scripts in parallel.

No it doesn't. The kernel doesn't run rc scripts. The kernel just runs 
init. init runs rc scripts.

> haldaemon wasn't starting (and I had already found that) and httpd
> wasn't starting. Although I had seen that, as well, I mistakenly thought
> it meant that _nothing_ was starting. 

Both haldaemon and httpd (apache) can be supervised.

Beware of startup race conditions between udev initialisation and
haldaemon. This works for me (on CentOS5):

#! /bin/sh

#udevd coldplug event processing for a cdrom device
#must complete before haldaemon is started so that the fstab
#entry for the cdrom will be created
udev_cdrom_link_exists=0
udev_timeout=10

while [ $udev_cdrom_link_exists -eq 0 ] && [ $udev_timeout -gt 0 ]
do
   udev_cdrom_link=$(/usr/bin/udevinfo -q symlink -n cdrom)
   [ $? -eq 0 ] && udev_cdrom_link_exists=1 || sleep 1
   (( --udev_timeout ))
   echo "haldaemon_run_script: udev_cdrom_symlinks: $udev_cdrom_link"
done

exec 2>&1
exec /usr/sbin/hald --daemon=no --verbose=yes




---
Charlie