82 lines
2.3 KiB
Bash
Executable File
82 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Send email to ZED_EMAIL in response to a DATA zevent.
|
|
# Only one message per ZED_EMAIL_INTERVAL_SECS will be sent for a given
|
|
# class/pool combination. This protects against spamming the recipient
|
|
# should multiple events occur together in time for the same pool.
|
|
# Exit codes:
|
|
# 0: email sent
|
|
# 1: email failed
|
|
# 2: email suppressed
|
|
# 3: missing executable
|
|
# 4: unsupported event class
|
|
# 5: internal error
|
|
# State File Format:
|
|
# POOL:TIME_OF_LAST_EMAIL
|
|
#
|
|
test -f "${ZED_SCRIPT_DIR}/zed.rc" && . "${ZED_SCRIPT_DIR}/zed.rc"
|
|
|
|
test -n "${ZEVENT_POOL}" || exit 5
|
|
test -n "${ZEVENT_SUBCLASS}" || exit 5
|
|
|
|
if test "${ZEVENT_SUBCLASS}" != "data"; then \
|
|
logger -t "${ZED_SYSLOG_TAG:=zed}" \
|
|
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
|
|
`basename "$0"`: unsupported event class \"${ZEVENT_SUBCLASS}\"
|
|
exit 4
|
|
fi
|
|
|
|
# Only send email if ZED_EMAIL has been configured.
|
|
test -n "${ZED_EMAIL}" || exit 2
|
|
|
|
# Ensure requisite executables are installed.
|
|
if ! command -v "${MAIL:=mail}" >/dev/null 2>&1; then
|
|
logger -t "${ZED_SYSLOG_TAG:=zed}" \
|
|
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
|
|
`basename "$0"`: "${MAIL}" not installed
|
|
exit 3
|
|
fi
|
|
|
|
NAME="zed.${ZEVENT_SUBCLASS}.email"
|
|
LOCKFILE="${ZED_LOCKDIR:=/var/lock}/${NAME}.lock"
|
|
STATEFILE="${ZED_RUNDIR:=/var/run}/${NAME}.state"
|
|
|
|
# Obtain lock to ensure mutual exclusion for accessing state.
|
|
exec 8> "${LOCKFILE}"
|
|
flock -x 8
|
|
|
|
# Query state for last time email was sent for this pool.
|
|
TIME_NOW=`date +%s`
|
|
TIME_LAST=`egrep "^${ZEVENT_POOL}:" "${STATEFILE}" 2>/dev/null | cut -d: -f2`
|
|
if test -n "${TIME_LAST}"; then
|
|
TIME_DELTA=`expr "${TIME_NOW}" - "${TIME_LAST}"`
|
|
if test "${TIME_DELTA}" -lt "${ZED_EMAIL_INTERVAL_SECS:=3600}"; then
|
|
exit 2
|
|
fi
|
|
fi
|
|
|
|
"${MAIL}" -s "ZFS ${ZEVENT_SUBCLASS} error for ${ZEVENT_POOL} on `hostname`" \
|
|
"${ZED_EMAIL}" <<EOF
|
|
A ZFS ${ZEVENT_SUBCLASS} error has been detected:
|
|
|
|
eid: ${ZEVENT_EID}
|
|
host: `hostname`
|
|
time: ${ZEVENT_TIME_STRING}
|
|
pool: ${ZEVENT_POOL}
|
|
EOF
|
|
MAIL_STATUS=$?
|
|
|
|
# Update state.
|
|
egrep -v "^${ZEVENT_POOL}:" "${STATEFILE}" 2>/dev/null > "${STATEFILE}.$$"
|
|
echo "${ZEVENT_POOL}:${TIME_NOW}" >> "${STATEFILE}.$$"
|
|
mv -f "${STATEFILE}.$$" "${STATEFILE}"
|
|
|
|
if test "${MAIL_STATUS}" -ne 0; then
|
|
logger -t "${ZED_SYSLOG_TAG:=zed}" \
|
|
-p "${ZED_SYSLOG_PRIORITY:=daemon.warning}" \
|
|
`basename "$0"`: "${MAIL}" exit="${MAIL_STATUS}"
|
|
exit 1
|
|
fi
|
|
|
|
exit 0
|