paspo/btrbk-cron
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added destination aliveness check

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This commit is contained in:
Paolo Asperti 2024-09-24 15:50:22 +02:00
parent 693ded862c
commit d856635747
Signed by: paspo
GPG Key ID: 06D46905D19D5182
1 changed files with 32 additions and 2 deletions
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btrbk-cron
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@ -4,8 +4,11 @@ CONF=/etc/btrbk/btrbk-cron.conf
LOGFILE=$(mktemp) LOGFILE=$(mktemp)
trap 'rm -f -- "${LOGFILE}"' EXIT trap 'rm -f -- "${LOGFILE}"' EXIT
echo "---" | tee -a "${LOGFILE}"
echo "Start btrbk-cron: $(date||true)" | tee -a "${LOGFILE}"
if [[ ! -f "${CONF}" ]] ; then if [[ ! -f "${CONF}" ]] ; then
echo "Warning: Can't read config file (${CONF}), healthchecks disabled." echo "Warning: Can't read config file (${CONF}), healthchecks disabled." | tee -a "${LOGFILE}"
else else
# shellcheck disable=SC1090,SC1091 # shellcheck disable=SC1090,SC1091
source "${CONF}" source "${CONF}"
@ -16,10 +19,37 @@ HEALTHCHECK_ENABLE=${HEALTHCHECK_ENABLE:-false}
CURLOPTS=(-fsS -m 10 --retry 5) CURLOPTS=(-fsS -m 10 --retry 5)
if [[ ! -d /run/btrbk ]] ; then if [[ ! -d /run/btrbk ]] ; then
echo "Warning: Creating missing directory: /run/btrbk " | tee -a "${LOGFILE}"
mkdir -p /run/btrbk mkdir -p /run/btrbk
fi fi
echo "---" | tee -a "${LOGFILE}" if [[ "${HEALTHCHECK_ENABLE}" = "true" ]] ; then
echo "Info: Healthchecks enabled with URL: ${HEALTHCHECK_URL}"
else
echo "Info: Healthchecks disabled"
fi
HOST=$(grep -E '^[\ \t]*target[\ \t]+send-receive' /etc/btrbk/btrbk.conf)
# TODO: support for dashes in hostname and IPv6 ("[2001:db8::7]")
HOST=$(echo "${HOST}" | sed -r 's/.*ssh:\/\/([0-9\.a-zA-Z]+).*/\1/g' )
IDENTITYFILE=$(grep -E '^[\ \t]*ssh_identity[\ \t].*' /etc/btrbk/btrbk.conf )
IDENTITYFILE=$(echo "${IDENTITYFILE}" | sed -r 's/.*ssh_identity[\ \t]+//g')
SSHUSER=$(grep -E '^[\ \t]*ssh_user[\ \t].*' /etc/btrbk/btrbk.conf )
SSHUSER=$(echo "${SSHUSER}" | sed -r 's/.*ssh_user[\ \t]+//g')
SSH_OK=$(ssh -i "${IDENTITYFILE}" "${SSHUSER}@${HOST}" "which btrfs")
if [[ "${SSH_OK}" = "" ]] ; then
echo "Warning: exiting because of backup destination unreachable" | tee -a "${LOGFILE}"
if [[ "${HEALTHCHECK_ENABLE}" = "true" ]] ; then
curl "${CURLOPTS[@]}" --data-binary "@${LOGFILE}" "${HEALTHCHECK_URL}/log"
fi
rm -f -- "${LOGFILE}"
exit 1
fi
echo "Start backup: $(date||true)" | tee -a "${LOGFILE}" echo "Start backup: $(date||true)" | tee -a "${LOGFILE}"
if [[ "${HEALTHCHECK_ENABLE}" = "true" ]] ; then if [[ "${HEALTHCHECK_ENABLE}" = "true" ]] ; then
curl "${CURLOPTS[@]}" "${HEALTHCHECK_URL}/start" curl "${CURLOPTS[@]}" "${HEALTHCHECK_URL}/start"