33 lines
790 B
Bash
Executable File
33 lines
790 B
Bash
Executable File
#!/bin/bash -e
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#
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# Reports Linux OOM Killer activity
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#
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here=$(dirname "$0")
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# shellcheck source=multinode-demo/common.sh
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source "$here"/common.sh
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if [[ $(uname) != Linux ]]; then
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exit 0
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fi
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syslog=/var/log/syslog
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if [[ ! -r $syslog ]]; then
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echo Unable to read $syslog
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exit 0
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fi
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# Adjust OOM score to reduce the chance that this script will be killed
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# during an Out of Memory event since the purpose of this script is to
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# report such events
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oom_score_adj "self" -500
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while read -r victim; do
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echo "Out of memory event detected, $victim killed"
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"$here"/metrics_write_datapoint.sh "oom-killer,victim=$victim killed=1"
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done < <( \
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tail --follow=name --retry -n0 $syslog \
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| sed --unbuffered -n 's/^.* Out of memory: Kill process [1-9][0-9]* (\([^)]*\)) .*/\1/p' \
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)
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exit 1
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