From: Evgeni Golov <evgeni@debian.org>
Date: Sat, 24 Sep 2016 09:25:33 +0000 (+0200)
Subject: set $user to <unknown> if lsof could not tell the username
X-Git-Url: https://git.adam-barratt.org.uk/?p=mirror%2Fdsa-nagios.git;a=commitdiff_plain;h=6e1c9dcd866cae677f7f995693e337ae8ab7510c

set $user to <unknown> if lsof could not tell the username

this happens e.g. on hosts that run containers in own user namespaces

without, the output will be full of warnings:
 Use of uninitialized value $user in hash element at dsa-check-libs line 188.

Signed-off-by: Peter Palfrader <peter@palfrader.org>
---

diff --git a/dsa-nagios-checks/checks/dsa-check-libs b/dsa-nagios-checks/checks/dsa-check-libs
index aaaf1ee..fd9e338 100755
--- a/dsa-nagios-checks/checks/dsa-check-libs
+++ b/dsa-nagios-checks/checks/dsa-check-libs
@@ -156,7 +156,7 @@ LINE: for my $line (@lsof)  {
 		my %fields = map { m/^(.)(.*)$/ ; $1 => $2 } grep { defined $_  and length $_ >1} split /\0/, $line;
 		$process = $fields{c};
 		$pid     = $fields{p};
-		$user    = $fields{L};
+		$user    = $fields{L} || '<unknown>';
 		next;
 	}