check-certificate.sh is a shell script which can be used to notify group of people over Slack before TLS certificates expire. Script can check tls certificates in two sources. tls:// and vault://.
VAULT_ADDR, VAULT_TOKEN and SLACK_WEBHOOK must be set before the execution.
check.txt
tls://manintheit.org:443[2m] # maintheit.org threshold is 2 months
tls://another.manintheit.org:443[30d] # another.maintheit.org --> threshold is 30 days.
vault://secret/data/certs/dragon/tls.crt # tls certificate in hashicorp vault no threshold specified, default threshold value will be considered, which is 30 days.You can find check-certificate.sh in my GH repo.
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