From 13ac2a0fa16ad94910944bd2206adf9462861e19 Mon Sep 17 00:00:00 2001
From: "Hahn Axel (hahn)" <axel.hahn@unibe.ch>
Date: Mon, 29 Jan 2024 08:30:32 +0100
Subject: [PATCH] detect reason for no output
---
check_docker_stats | 29 ++++++++++++++++++++++-------
1 file changed, 22 insertions(+), 7 deletions(-)
diff --git a/check_docker_stats b/check_docker_stats
index 65b8a97..d215f2f 100755
--- a/check_docker_stats
+++ b/check_docker_stats
@@ -14,7 +14,7 @@
# https://docs.docker.com/engine/reference/commandline/docker/
# ----------------------------------------------------------------------
# 2024-01-26 v1.0 <axel.hahn@unibe.ch> init
-# 2024-01-29 v1.1 <axel.hahn@unibe.ch> fix help
+# 2024-01-29 v1.1 <axel.hahn@unibe.ch> fix help; detect reason for no output
# ======================================================================
@@ -104,11 +104,11 @@ esac; done
sLabel="Docker stats"
case "$sMode" in
- "cpu") sLabel="Docker CPU usage total of all containers: %s percent"; sUnit="1"; sumkey="CPUPerc"; sColumns=".Container, .${sumkey}, .Name" ;;
- "mem") sLabel="Docker Memory max usage in most consuming container: %s percent"; sUnit="1"; maxkey="MemPerc"; sColumns=".Container, .${maxkey}, .MemUsage, .Name" ;;
- "netio") sLabel="Docker Network I/O of all containers: %s MB IN .. %s MB OUT"; sUnit="M"; sumkey="NetIO"; f2=1; sColumns=".Container, .${sumkey}, .Name" ;;
- "memtotal") sLabel="Docker Memory usage of all containers: %s MB"; sUnit="M"; sumkey="MemUsage";f2=0; sColumns=".Container, .${sumkey}, .Name" ;;
- "blockio") sLabel="Docker Network I/O of all containers: %s MB IN .. %s MB OUT"; sUnit="M"; sumkey="BlockIO"; f2=1; sColumns=".Container, .${sumkey}, .Name" ;;
+ "cpu") sLabel="Docker CPU usage total of all containers: %s percent"; sUnit="1"; sumkey="CPUPerc"; sColumns=".Container, .${sumkey}, .Name" ;;
+ "mem") sLabel="Docker Memory max usage in most consuming container: %s percent"; sUnit="1"; maxkey="MemPerc"; sColumns=".Container, .${maxkey}, .MemUsage, .Name" ;;
+ "netio") sLabel="Docker Network I/O of all containers: %s MB IN .. %s MB OUT"; sUnit="M"; sumkey="NetIO"; f2=1; sColumns=".Container, .${sumkey}, .Name" ;;
+ "memtotal") sLabel="Docker Memory usage of all containers: %s MB"; sUnit="M"; sumkey="MemUsage"; f2=0; sColumns=".Container, .${sumkey}, .Name" ;;
+ "blockio") sLabel="Docker Block I/O of all containers: %s MB IN .. %s MB OUT"; sUnit="M"; sumkey="BlockIO"; f2=1; sColumns=".Container, .${sumkey}, .Name" ;;
"all") ;;
*) ph.setStatus critical
echo "ERROR: mode [$sMode] is unknown. Use -h to get help."
@@ -127,7 +127,22 @@ _detectDockerenv
# --- get stats data
data=$( sudo -n --preserve-env docker stats --no-stream --format '{{ json . }}' )
-_detectDockererror "$data"
+
+if [ -z "$data" ]; then
+ # zero output could mean:
+ # - connect to docker failed
+ # - no data because no container is running
+ # --> let's detect it...
+ infos=$( sudo -n --preserve-env docker system info --format '{{ json . }}' )
+ _detectDockererror "$infos"
+
+ typeset -i iCRunning;
+ iCRunning=$(_getString "$data" ".ContainersRunning" )
+ if [ "$iCRunning" -eq "0" ]; then
+ ph.status "$sLabel >> Do data. No container is running"
+ ph.exit
+ fi
+fi
# --- checks to detect maximum
--
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