check_systemd_service: also check uptime

check_systemd_service.sh

@@ -6,15 +6,14 @@ function usage {
   -t Service is triggered by a timer and is allowed to be inactive"
 }
 
-# Initialize variables
+UNIT_NAME=""
-UNIT=""
 IS_TIMER=false
 
 # Parse command line arguments
 while getopts "u:t" opt; do
   case ${opt} in
     u )
-      UNIT=$OPTARG
+      UNIT_NAME=$OPTARG
       ;;
     t )
       IS_TIMER=true
@@ -32,33 +31,40 @@ done
 shift $((OPTIND -1))
 
 # Check if UNIT name is provided
-if [ -z "$UNIT" ]; then
+if [ -z "$UNIT_NAME" ]; then
     usage
     exit -1
 fi
 
 # Check if the unit is enabled
-enabled=$(systemctl is-enabled "$UNIT")
+enabled=$(systemctl is-enabled "$UNIT_NAME")
 if [ "$enabled" != "enabled" ]; then
-    echo "CRITICAL - $UNIT is not enabled"
+    echo "CRITICAL - $UNIT_NAME is not enabled"
     exit 2
 fi
 
 # Check if the unit is active
-active=$(systemctl is-active "$UNIT")
+active=$(systemctl is-active "$UNIT_NAME")
-substate=$(systemctl show "$UNIT" --property=SubState --value)
+substate=$(systemctl show "$UNIT_NAME" --property=SubState --value)
 
 if [ "$active" = "activating" ]; then
-    echo "WARNING - $UNIT is activating"
+    echo "WARNING - $UNIT_NAME is activating"
     exit 1
 elif [ "$active" != "active" ] || { [ "$substate" = "exited" ] && [ "$IS_TIMER" = false ]; }; then
-    echo "CRITICAL - $UNIT is not active"
+    echo "CRITICAL - $UNIT_NAME is not active"
     exit 2
 fi
 
+# Get service start time
+start_time=$(systemctl show "$UNIT_NAME" --property=ExecMainStartTimestamp --value)
+current_time=$(date +%s)
+time_diff=$((current_time - $(date -d "$start_time" +%s)))
+uptime_str="Started at $start_time. | uptime=${time_diff}s"
+
+
 if [ "$IS_TIMER" = true ] && [ "$substate" = "exited" ]; then
-    echo "OK - $UNIT is active (exited) and enabled"
+    echo "OK - $UNIT_NAME is active (exited) and enabled. $uptime_str"
 else
-    echo "OK - $UNIT is active and enabled"
+    echo "OK - $UNIT_NAME is active and enabled. $uptime_str"
 fi
 exit 0