mirror of
https://github.com/kubernetes/node-problem-detector.git
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4df720c2a0
- Use `systemctl is-active` to check if service is running
- Cleaner that `grep` on `systemctl status` output
- Return success means service is running/active
- Return failure means not running which could be due to
stopped/failed service or that service does not exist
- Use `command -v` instead of `which`
Ref: https://github.com/koalaman/shellcheck/wiki/SC2230
- Follow Google "Shell Style Guide": indent, use "readonly"
- Minor: Rephrase comment, avoid all caps
28 lines
619 B
Bash
Executable File
28 lines
619 B
Bash
Executable File
#!/bin/bash
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# This plugin checks if the ntp service is running under systemd.
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# NOTE: This is only an example for systemd services.
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readonly OK=0
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readonly NONOK=1
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readonly UNKNOWN=2
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readonly SERVICE='ntp.service'
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# Check systemd cmd present
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if ! command -v systemctl >/dev/null; then
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echo "Could not find 'systemctl' - require systemd"
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exit $UNKNOWN
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fi
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# Return success if service active (i.e. running)
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if systemctl -q is-active "$SERVICE"; then
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echo "$SERVICE is running"
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exit $OK
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else
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# Does not differenciate stopped/failed service from non-existent
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echo "$SERVICE is not running"
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exit $NONOK
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fi
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