Forum: Cfengine Help
Subject: Check for lockfile
Author: berntjernberg
Link to topic: https://cfengine.com/forum/read.php?3,21532,21532#msg-21532
Hi all,
I have a shell wrapper installing a monitoring agent (not cfengine). The
wrapper creates
a lock-file so not two instances can run at the same time. On a busy system the
installation
takes about 25 minutes and the cf-execd runs cf-agent every 15 minutes. I need
to check
for that lock-file and continue to next promise if it was created less than 45
minutes ago
otherwise force an uninstall and cleanup of the software.
I came up with this code that works but I wonder if anyone has a better
solution.
body file_select minutes_old(name,minutes)
{
leaf_name => { "$(name)" };
ctime => irange(ago(5,0,0,0,0,0),ago(0,0,0,0,"$(minutes)",0));
file_result => "ctime.leaf_name";
}
bundle agent check_lockfile
{
files:
"/var/tmp"
file_select => minutes_old("file.lck","45"),
depth_search => recurse("inf"),
action => policy("fix"),
transformer => "/usr/bin/echo $(this.promiser)",
classes => if_repaired("old_lockfile_exist");
commands:
old_lockfile_exist::
...
...
}
Any ideas?
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