On Wed, Nov 10, 2010 at 06:53:56PM -0500, Sandra Wittenbrock wrote:
>Hi,
>
>What would be the command to make sure a service (sysctl, firewall, etc)
>is running, and/or restart it when cfengine updates the config files?
I just recently added this snippet for checking a service that may be
"running", but doesn't always have a daemon. This applies to things
that run from xinetd, for example. The trick is that cfengine has a
readtcp function that can be used, if you're careful.
Here's the snippet:
<-----------------------------snip----------------------------->
bundle agent rsync {
vars:
# the first 8 bytes of the rsync protocol are "@RSYNCD:" followed by
# a space, and a protocol version number (which we don't care about)
'bytes' string => '8';
'rsync_data' string => readtcp('localhost','873',"${const.n}","${bytes}");
classes:
'runs_rsync' or => {
"RsyncServers",
};
runs_rsync::
'rsync_is_running' expression => regcmp("^.RSYNCD:$","${rsync_data}");
processes:
# Doesn't work, since there may not be an rsyncd process!
files:
# configuration for xinetd and rsync is pretty
# standard--copy files into place as needed
commands:
runs_rsync.!rsync_is_running::
"/etc/init.d/xinetd restart"
contain => quiet_no_shell;
}
<-----------------------------snip----------------------------->
--
Jesse Becker
NHGRI Linux support (Digicon Contractor)
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