Memory

Check swap activity on Linux

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Description:

Check swap activity on your Linux host.

Current Version

1.0

Last Release Date

2012-06-10

Compatible With

  • Nagios 3.x

Owner

Shu Wei Tan

License

GPL

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Project Files
FileDescription
check_swap_activity
Project Notes
This plugin is designed to determine if your Linux server is swapping excessively from physical to virtual memory. Displays swap activity in bytes (e.g. 124 bytes swapped into virtual memory in the last 2 seconds). Includes performance data for graphing.
Reviews (2) Add a Review
alext's fixes
by ftobin, December 31, 2013
alext's fixes are appropriate. Here's the patch:

--- check_swap_activity 2013-12-19 10:03:53.760950053 -0500
+++ check_swap_activity-2 2013-12-20 11:26:27.860034216 -0500
@@ -96,12 +96,12 @@
LINE="OK! Swapout size in last ${DURATION} second(s): ${SWAPOUT_ACTIVITY} | swapout_size=${SWAPOUT_ACTIVITY}B;${SWAP_WARN};${SWAP_CRIT};"
echo $LINE
exit 0
-elif [ ${SWAPOUT_ACTIVITY} -gt ${SWAP_WARN} ] && [ ${SWAPOUT_ACTIVITY} -lt ${SWAP_CRIT} ] || [ ${SWAPOUT_ACTIVITY} -eq ${SWAP_WARN} ]; then
+elif [ ${SWAPOUT_ACTIVITY} -ge ${SWAP_WARN} ] && [ ${SWAPOUT_ACTIVITY} -lt ${SWAP_CRIT} ]; then
## SWAP IS IN WARNING STATE
LINE="WARNING! Swapout size in last ${DURATION} second(s): ${SWAPOUT_ACTIVITY} | swapout_size=${SWAPOUT_ACTIVITY}B;${SWAP_WARN};${SWAP_CRIT};"
echo $LINE
exit 1
-elif [ ${USED_SWAP} -gt ${SWAP_CRIT} ] || [ ${USED_SWAP} -eq ${SWAP_CRIT} ]; then
+elif [ ${SWAPOUT_ACTIVITY} -ge ${SWAP_CRIT} ]; then
## SWAP IS IN CRITICAL STATE
LINE="CRITICAL! Swapout size in last ${DURATION} second(s): ${SWAPOUT_ACTIVITY} | swapout_size=${SWAPOUT_ACTIVITY}B;${SWAP_WARN};${SWAP_CRIT};"
echo $LINE
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Undefined variable used in CRITICAL elif
by alext, April 30, 2013
The last elif condition uses an undefined variable, ${USED_SWAP} which was probably replaced by ${SWAPOUT_ACTIVITY}. Just a heads up in case the check returns UNKNOWN status when it should be CRITICAL. Also, the double pipes can be replaced with -ge, for the two elifs.
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