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tstest/integration: fix filch test flake

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Filch doesn't like having multiple processes competing
for the same log files (#937).

Parallel integration tests were all using the same log files.

Add a TS_LOGS_DIR env var that the integration test can use
to use separate log files per test.

Fixes #2269

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
This commit is contained in:
Josh Bleecher Snyder
2021-07-20 14:10:11 -07:00
committed by Josh Bleecher Snyder
parent ed8587f90d
commit 0aa77ba80f
2 changed files with 9 additions and 0 deletions
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7
logpolicy/logpolicy.go
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@@ -128,6 +128,13 @@ func (l logWriter) Write(buf []byte) (int, error) {
// logsDir returns the directory to use for log configuration and
// buffer storage.
func logsDir(logf logger.Logf) string {
if d := os.Getenv("TS_LOGS_DIR"); d != "" {
fi, err := os.Stat(d)
if err == nil && fi.IsDir() {
return d
}
}
// STATE_DIRECTORY is set by systemd 240+ but we support older
// systems-d. For example, Ubuntu 18.04 (Bionic Beaver) is 237.
systemdStateDir := os.Getenv("STATE_DIRECTORY")