Bug #3457: "/etc/init.d/rudder-agent stop" or "/etc/init.d/rudder-agent forcestop" don't stop and diplay error messages about bad usage of kill - Rudder - Issue Tracker

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#1

Updated by Nicolas PERRON about 11 years ago

Target version changed from 2.5.2 to 2.5.3

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#2

Updated by Nicolas PERRON almost 11 years ago

Status changed from New to In progress
Assignee set to Nicolas PERRON

The only way to reproduce this bug is to have the files /var/rudder/cfengine-community/{cf-execd.pid,cf-serverd.pid} empty.

During the stop process, the files are removed:

root@rudder-snapshot:~# ls -lh /var/rudder/cfengine-community/cf-*
-rw-r--r-- 1 root root 6 Apr 24 12:08 /var/rudder/cfengine-community/cf-execd.pid
-rw------- 1 root root 6 Apr 24 12:08 /var/rudder/cfengine-community/cf-serverd.pid

root@rudder-snapshot:~# /etc/init.d/rudder-agent stop
rudder-agent[28372]: [INFO] Using /etc/default/rudder-agent for configuration
rudder-agent[28375]: [INFO] Using /var/rudder/cfengine-community for CFEngine workdir
rudder-agent[28376]: [INFO] Halting CFEngine Community cf-serverd...
rudder-agent[28380]: [OK] CFEngine Community cf-serverd stopped after 2 seconds
rudder-agent[28381]: [INFO] Halting CFEngine Community cf-execd...
rudder-agent[28385]: [OK] CFEngine Community cf-execd stopped after 2 seconds

root@rudder-snapshot:~# root@rudder-snapshot:~# ls -lh /var/rudder/cfengine-community/cf-*
-bash: root@rudder-snapshot:~#: command not found

...but it is still possible to stop:

root@rudder-snapshot:~# /etc/init.d/rudder-agent stop
rudder-agent[28395]: [INFO] Using /etc/default/rudder-agent for configuration
rudder-agent[28398]: [INFO] Using /var/rudder/cfengine-community for CFEngine workdir
rudder-agent[28399]: [INFO] Halting CFEngine Community cf-serverd...
rudder-agent[28400]: [INFO] can't read PID file, not stopping cf-serverd
rudder-agent[28401]: [INFO] Halting CFEngine Community cf-execd...
rudder-agent[28402]: [INFO] can't read PID file, not stopping cf-execd
rudder-agent[28408]: [INFO] Found no CFEngine Community cf-serverd processes running
rudder-agent[28415]: [INFO] Found no CFEngine Community cf-execd processes running

If I have an empty file, the stop process will hang for a certain amount of time:

root@rudder-snapshot:~# touch /var/rudder/cfengine-community/cf-execd.pid

root@rudder-snapshot:~# /etc/init.d/rudder-agent stop
rudder-agent[28437]: [INFO] Using /etc/default/rudder-agent for configuration
rudder-agent[28441]: [INFO] Using /var/rudder/cfengine-community for CFEngine workdir
rudder-agent[28442]: [INFO] Halting CFEngine Community cf-serverd...
rudder-agent[28443]: [INFO] can't read PID file, not stopping cf-serverd
rudder-agent[28444]: [INFO] Halting CFEngine Community cf-execd...
kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]

If the file contain not an integer, it will just warn about an error and will delete the file (all will be OK again):

root@rudder-snapshot:~# echo "21.1" > /var/rudder/cfengine-community/cf-execd.pid

root@rudder-snapshot:~# /etc/init.d/rudder-agent stop
rudder-agent[28548]: [INFO] Using /etc/default/rudder-agent for configuration
rudder-agent[28551]: [INFO] Using /var/rudder/cfengine-community for CFEngine workdir
rudder-agent[28552]: [INFO] Halting CFEngine Community cf-serverd...
rudder-agent[28553]: [INFO] can't read PID file, not stopping cf-serverd
rudder-agent[28554]: [INFO] Halting CFEngine Community cf-execd...
/etc/init.d/rudder-agent: line 229: kill: 21.1: arguments must be process or job IDs
rudder-agent[28556]: [OK] CFEngine Community cf-execd stopped after 1 seconds
rudder-agent[28562]: [INFO] Found no CFEngine Community cf-serverd processes running
rudder-agent[28569]: [INFO] Found no CFEngine Community cf-execd processes running

root@rudder-snapshot:~# ls -lh /var/rudder/cfengine-community/cf-execd.pid
ls: cannot access /var/rudder/cfengine-community/cf-execd.pid: No such file or directory

During start, whatever the file exists or not, all will be ok:

root@rudder-snapshot:~# touch  /var/rudder/cfengine-community/cf-execd.pid

root@rudder-snapshot:~# /etc/init.d/rudder-agent start
rudder-agent[28816]: [INFO] Using /etc/default/rudder-agent for configuration
rudder-agent[28820]: [INFO] Using /var/rudder/cfengine-community for CFEngine workdir
rudder-agent[28821]: [INFO] Launching CFEngine Community cf-serverd...
rudder-agent[28845]: [OK] CFEngine Community cf-serverd started after 1 seconds
rudder-agent[28846]: [INFO] Launching CFEngine Community cf-execd...
rudder-agent[28870]: [OK] CFEngine Community cf-execd started after 1 seconds

root@rudder-snapshot:~# cat  /var/rudder/cfengine-community/cf-execd.pid
28867

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#3