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40 lines
878 B
Bash
40 lines
878 B
Bash
#!/bin/sh
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#
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# Plugin to monitor available entropy
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#
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# Usage: Link or copy into /etc/munin/node.d/
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#
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# Magic markers (optional - only used by munin-config and some
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# installation scripts):
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#
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#%# family=auto
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#%# capabilities=autoconf
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if [ "$1" = "autoconf" ]; then
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if [ -x /sbin/rndctl ]; then
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echo yes
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exit 0
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else
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echo no
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exit 1
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fi
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fi
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if [ "$1" = "config" ]; then
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echo 'graph_title Available entropy'
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echo 'graph_args --base 1000 -l 0'
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echo 'graph_vlabel entropy (bytes)'
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echo 'graph_scale no'
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echo 'graph_category system'
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echo 'graph_info This graph shows the amount of entropy available in the system.'
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echo 'entropy.label entropy'
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echo 'entropy.info The number of random bytes available. This is typically used by cryptographic applications.'
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exit 0
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fi
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echo -n "entropy.value "
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/sbin/rndctl -s | /usr/bin/awk '/bits currently stored/ { print $1 }'
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