Forum: CFEngine Help
Subject: Cfengine performing system shutdown/restart
Author: ro
Link to topic: https://cfengine.com/forum/read.php?3,23082,23082#msg-23082
Hi,
for a specific use case I need Cfengine to restart the host when a special
global class has been set by another promise.
Initially I thought I'd add a last promise 'restartHost' that would call the
shutdown command which would restart the system two minutes afterwards (to give
cfengine enough time to complete):
bundle agent restartHost {
vars:
any::
"cmd_restart" string => "/sbin/shutdown -r 2";
commands:
any::
"$(cmd_restart)",
comment => "If this is the first cfengine run
on this machine, restart the host in order to reinitialize some services",
classes => cmd_if_else("restartHost");
reports:
repaired_restartHost:: "Repaired promise restartHost. Host is
going to restart in 2 minutes!";
failed_restartHost:: "WARNING: Repair of promise restartHost
FAILED! Need to manually restart host!";
}
What I did not think of was that the shutdown process always stays in
foreground, so cfengine is patiently waiting for this process to finish before
proceeding and finishing the cfengine run. However, Cfengine cannot gracefully
finish its run because the system is going down before, forcefully stopping the
cfengine process.
No matter how hard I try to send the shutdown process to the background
('action => bg', '/sbin/shutdown -r 2 &', 'contain => silent'), Cfengine would
always wait for the shutdown process to finish before proceeding.
Any ideas?
Cheers,
Robert
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