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33 lines
1.2 KiB
33 lines
1.2 KiB
#!/bin/bash
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# Recommended crontab:
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# * * * * * /path/to/collect-certdata.sh
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influx_host="{{ influx_host }}"
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influx_path="/api/v2/write"
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influx_org="{{ influx_org }}"
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influx_bucket="{{ influx_bucket }}"
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influx_token="{{ influx_token }}"
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influx_metric="certificate"
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domains=({% for dns in certificate_monitor_domains %}"{{dns}}" {% endfor %})
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influx_url="${influx_host}${influx_path}?org=${influx_org}&bucket=${influx_bucket}"
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influx_header_auth="Authorization: Token ${influx_token}"
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influx_header_content="Content-Type: text/plain; charset=utf-8"
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influx_header_accept="Accept: application/json"
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for dn in ${domains[@]}; do
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certificate="$(openssl s_client -connect ${dn}:443 2>/dev/null </dev/null | openssl x509)"
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# Calculation broken down from https://gist.github.com/holly/4205943
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datestr=`echo "${certificate}" | openssl x509 -enddate -noout | cut -d'=' -f2`
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daystr=`date -d "$datestr" "+%s"`
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current_time=$(date "+%s")
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days=`echo $((($daystr - $current_time) / 60 / 60 / 24))`
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data="${influx_metric},domain=${dn} remaining=${days}i"
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curl --request POST "${influx_url}" --header "${influx_header_auth}" --header "${influx_header_content}" --header "${influx_header_accept}" --data-binary "${data}"
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done
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