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Proc mode: try to guess PID based on Parent PID when multiple found #219

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Merged
merged 2 commits into from
Jun 22, 2025
Merged

Proc mode: try to guess PID based on Parent PID when multiple found #219

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Proc mode: try to guess PID based on PPID when multiple found
hayer May 19, 2025
5236b3b
Merge branch 'tale:main' into main
hayer Jun 19, 2025
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29 changes: 26 additions & 3 deletions app/server/config/integration/proc.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -61,14 +61,37 @@ export default class ProcIntegration extends Integration<T> {

log.debug('config', 'Found Headscale processes: %o', pids);
if (pids.length > 1) {
log.error(
log.warn(
'config',
'Found %d Headscale processes: %s',
pids.length,
pids.join(', '),
);
return false;
}

log.debug('config', 'Checking if any of them have Parent PID = 1, assuming thats the correct PID');
const ppidRegex = /(?:PPid:\s)(\d+)(?:\n?)/;
for (const pid of pids) {
const pidStatusPath = join('/proc', pid.toString(), 'status');
try {
log.debug('config', 'Reading %s', pidStatusPath);
const pidData = await readFile(pidStatusPath, 'utf8');
const ppidResult = pidData.match(ppidRegex);

if (ppidResult !== null) {
const potentialPPid = Number.parseInt(ppidResult[1], 10);
if (potentialPPid === 1) {
this.pid = pid;
log.info('config', 'Found potential Headscale process with PID: %d based on Parent PID = 1', this.pid);
return true;
}
}
} catch (error) {
log.error('config', 'Failed to read %s: %s', pidStatusPath, error);
}
}

return false;
}

if (pids.length === 0) {
log.error('config', 'Could not find Headscale process');
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