Check expiry for a certification file.
check-cert-file --file=/path/to/cert.pem --warning=30 --critical=14
First, build this program.
go get github.com/mackerelio/go-check-plugins
cd $(go env GOPATH)/src/github.com/mackerelio/go-check-plugins/check-cert-file
go install
Or you can use this program by installing the official Mackerel package. See Using the official check plugin pack for check monitoring - Mackerel Docs.
Next, you can execute this program :-)
check-cert-file --file=/path/to/cert.pem --warning=30 --critical=14
If there are no problems in the execution result, add a setting in mackerel-agent.conf .
[plugin.checks.cert-file]
command = ["check-cert-file", "--file", "/path/to/cert.pem", "--warning", "30", "--critical", "14"]
-f, --file= cert file name
-c, --critical= The critical threshold in days before expiry (default: 14)
-w, --warning= The threshold in days before expiry (default: 30)
Please execute check-cert-file -h
and you can get command line options.