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#!/sbin/openrc-run
# Copyright 2016-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
description="Prometheus exporter for MySQL server metrics"
EXPORTER_FLAGS=${EXPORTER_FLAGS:-""}
EXPORTER_USER=${EXPORTER_USER:-"mysqld_exporter"}
EXPORTER_GROUP=${EXPORTER_GROUP:-"mysqld_exporter"}
EXPORTER_PIDFILE=${EXPORTER_PIDFILE:-"/run/${RC_SVCNAME}.pid"}
EXPORTER_SSDARGS=${EXPORTER_SSDARGS:-"--wait 1000"}
EXPORTER_TERMTIMEOUT=${EXPORTER_TERMTIMEOUT:-"TERM/60/KILL/5"}
command="/usr/bin/mysqld_exporter"
command_args="${EXPORTER_FLAGS}"
command_background="true"
start_stop_daemon_args="${EXPORTER_SSDARGS}"
start_stop_daemon_args="${start_stop_daemon_args} --user ${EXPORTER_USER}"
start_stop_daemon_args="${start_stop_daemon_args} --group ${EXPORTER_GROUP}"
# We are forcing log files because upstream is going to remove syslog support :/
start_stop_daemon_args="${start_stop_daemon_args} --stdout /var/log/mysqld_exporter/${RC_SVCNAME}.log"
start_stop_daemon_args="${start_stop_daemon_args} --stderr /var/log/mysqld_exporter/${RC_SVCNAME}.log"
getconfig() {
local key="$1"
local value_default="$2"
local value=
if service_started; then
value="$(service_get_value "${key}")"
fi
if [ -z "${value}" ]; then
# Value not explicitly set
echo "${value_default}"
else
echo "${value}"
fi
return 0
}
pidfile="$(getconfig pidfile ${EXPORTER_PIDFILE})"
retry="$(getconfig retry ${EXPORTER_TERMTIMEOUT})"
configtest() {
if test "${command_args#*config\.my-cnf}" = "${command_args}"; then
local _default_config_file="/var/lib/mysqld_exporter/.my.cnf"
if [ ! -s "${_default_config_file}" ]; then
eerror "No MySQL credentials found in \"${_default_config_file}\"!"
eerror "Either create that file and add credentials or specify another file via \"-config.my-cnf\" flag."
return 1
fi
fi
return 0
}
depend() {
after net
use mysql
}
start_pre() {
if [ "${RC_CMD}" != "restart" ]; then
configtest || return 1
fi
}
start_post() {
service_set_value retry "${EXPORTER_TERMTIMEOUT}"
}
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