34 lines
1.8 KiB
Plaintext
34 lines
1.8 KiB
Plaintext
###############################################################################
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## Services
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###############################################################################
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#
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## Check general system resources such as load average, cpu and memory
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## usage. Each test specifies a resource, conditions and the action to be
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## performed should a test fail.
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check system $HOST
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if loadavg (1min) per core > 2 for 5 cycles then exec "/etc/monit.d/scripts/critical Load average is high"
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if memory usage > 75% then exec "/etc/monit.d/scripts/critical Memory is overused."
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if swap usage > 25% then exec "/etc/monit.d/scripts/critical Swap is overused."
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group system
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#
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## Check filesystem permissions, uid, gid, space usage, inode usage and disk I/O.
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## Other services, such as databases, may depend on this resource and an automatically
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## graceful stop may be cascaded to them before the filesystem will become full and data
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## lost.
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check filesystem rootfs with path /
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if space usage > 80% for 5 times within 15 cycles then exec "/etc/monit.d/scripts/critical Root filesystem is too full."
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if read rate > 500 operations/s for 5 cycles then exec "/etc/monit.d/scripts/critical Too many reads on root filesystem."
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if write rate > 500 operations/s for 5 cycles then exec "/etc/monit.d/scripts/critical Too many writes on root filesystem."
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if service time > 50 milliseconds for 3 times within 5 cycles then exec "/etc/monit.d/scripts/critical Root filesystem performing slowly -- check iostat."
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group system
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#
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## Check a network link status (up/down), link capacity changes, saturation
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## and bandwidth usage.
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#
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# check network public with interface eth0
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# if failed link then alert
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# if changed link then alert
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# if saturation > 90% then alert
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# if download > 10 MB/s then alert
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# if total uploaded > 1 GB in last hour then alert
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