logpolicy: only log panics when running under systemd

Given that https://github.com/golang/go/issues/42888 is coming, this
catches most practical panics without interfering in our development
environments.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
pull/2576/head
David Crawshaw 3 years ago committed by David Crawshaw
parent 24ee0ed3c3
commit eab80e3877

@ -187,6 +187,10 @@ func runningUnderSystemd() bool {
return false
}
func redirectStderrToLogPanics() bool {
return runningUnderSystemd() || os.Getenv("TS_PLEASE_PANIC") != ""
}
// tryFixLogStateLocation is a temporary fixup for
// https://github.com/tailscale/tailscale/issues/247 . We accidentally
// wrote logging state files to /, and then later to $CACHE_DIRECTORY
@ -436,11 +440,13 @@ func New(collection string) *Policy {
}
filchBuf, filchErr := filch.New(filepath.Join(dir, cmdName), filch.Options{
ReplaceStderr: true,
ReplaceStderr: redirectStderrToLogPanics(),
})
if filchBuf != nil {
c.Buffer = filchBuf
c.Stderr = filchBuf.OrigStderr
if filchBuf.OrigStderr != nil {
c.Stderr = filchBuf.OrigStderr
}
}
lw := logtail.NewLogger(c, log.Printf)
log.SetFlags(0) // other logflags are set on console, not here

Loading…
Cancel
Save