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Daemons - handle daemons that can't be killed a bit better

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Summary:
Ref T2374. Fixes T5988.

Keep track of what's been killed and not been killed, and surface that maybe you need sudo if things don't get killed with --force

...also basically make this force thing work. I managed to convinced myself stuff was getting killed with --force when it mostly wasn't. Make sure the --force parameter gets pushed as low as it needs to go to have things get killed.

Test Plan:
 - `sudo ./bin/phd restart`
 - `rm -rf /var/tmp/phd/pid/*`
 - `./bin/phd stop` --> get warning about rogue daemons
 - `./bin/phd stop X` --> get warning about no running daemons
 - `./bin/phd stop --force` --> get warning about not being able to kill daemons
 - `sudo ./bin/phd stop --force` --> kill daemons successfully

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T2374, T5988

Differential Revision: https://secure.phabricator.com/D10386
This commit is contained in:
Bob Trahan 2014-09-03 15:19:02 -07:00
parent 69d788e4e9
commit 7ecbc70784
1 changed files with 36 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

55
src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
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@ -295,16 +295,16 @@ abstract class PhabricatorDaemonManagementWorkflow
$daemons = $this->loadRunningDaemons();
if (!$daemons) {
$rogue_daemons = PhutilDaemonOverseer::findRunningDaemons();
if ($force && $rogue_daemons) {
$stop_rogue_daemons = $this->buildRogueDaemons($rogue_daemons);
$this->sendStopSignals($stop_rogue_daemons, $grace_period);
} else {
$survivors = array();
if (!$pids) {
$survivors = $this->processRogueDaemons(
$grace_period,
$warn = true,
$force);
}
if (!$survivors) {
$console->writeErr(pht(
'There are no running Phabricator daemons.')."\n");
if ($rogue_daemons && !$pids) {
$console->writeErr($this->getForceStopHint($rogue_daemons)."\n");
}
}
return 0;
}
@ -339,6 +339,7 @@ abstract class PhabricatorDaemonManagementWorkflow
}
$all_daemons = $running;
// don't specify force here as that's about rogue daemons
$this->sendStopSignals($running, $grace_period);
foreach ($all_daemons as $daemon) {
@ -347,17 +348,32 @@ abstract class PhabricatorDaemonManagementWorkflow
}
}
$this->processRogueDaemons($grace_period, !$pids, $force);
return 0;
}
private function processRogueDaemons($grace_period, $warn, $force_stop) {
$console = PhutilConsole::getConsole();
$rogue_daemons = PhutilDaemonOverseer::findRunningDaemons();
if ($rogue_daemons) {
if ($force) {
if ($force_stop) {
$stop_rogue_daemons = $this->buildRogueDaemons($rogue_daemons);
$this->sendStopSignals($stop_rogue_daemons, $grace_period);
} else if (!$pids) {
$survivors = $this->sendStopSignals(
$stop_rogue_daemons,
$grace_period,
$force_stop);
if ($survivors) {
$console->writeErr(pht(
'Unable to stop processes running without pid files. Try running '.
'this command again with sudo.'."\n"));
}
} else if ($warn) {
$console->writeErr($this->getForceStopHint($rogue_daemons)."\n");
}
}
return 0;
return $rogue_daemons;
}
private function getForceStopHint($rogue_daemons) {
@ -382,31 +398,32 @@ abstract class PhabricatorDaemonManagementWorkflow
return $rogue_daemons;
}
private function sendStopSignals($daemons, $grace_period) {
private function sendStopSignals($daemons, $grace_period, $force = false) {
// If we're doing a graceful shutdown, try SIGINT first.
if ($grace_period) {
$daemons = $this->sendSignal($daemons, SIGINT, $grace_period);
$daemons = $this->sendSignal($daemons, SIGINT, $grace_period, $force);
}
// If we still have daemons, SIGTERM them.
if ($daemons) {
$daemons = $this->sendSignal($daemons, SIGTERM, 15);
$daemons = $this->sendSignal($daemons, SIGTERM, 15, $force);
}
// If the overseer is still alive, SIGKILL it.
if ($daemons) {
$this->sendSignal($daemons, SIGKILL, 0);
$daemons = $this->sendSignal($daemons, SIGKILL, 0, $force);
}
return $daemons;
}
private function sendSignal(array $daemons, $signo, $wait) {
private function sendSignal(array $daemons, $signo, $wait, $force = false) {
$console = PhutilConsole::getConsole();
foreach ($daemons as $key => $daemon) {
$pid = $daemon->getPID();
$name = $daemon->getName();
if (!$pid) {
if (!$pid && !$force) {
$console->writeOut("%s\n", pht("Daemon '%s' has no PID!", $name));
unset($daemons[$key]);
continue;