iankelling.org Git - log-quiet/blob - sysd-prom-fail-install

   1 #!/bin/bash
   2 # Copyright (C) 2022 Ian Kelling
   3
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 # usage: since this is a counter, in prometheus alert manager you will
  17 # need to test something like: rate(node_systemd_unit_result_fail_count[30m]) > 0
  18
  19 source /a/bin/bash-bear-trap/bash-bear
  20 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
  21
  22 ser_name=$1
  23
  24 mkdir -p /var/lib/prometheus/node-exporter
  25
  26 f=/var/local/sysd-prom-fail/${ser_name}-result.prom
  27
  28
  29 if [[ ! -s $f ]]; then
  30   SERVICE_RESULT=success /usr/local/bin/sysd-prom-fail $ser_name
  31 fi
  32
  33 tmp=$(mktemp)
  34
  35 cat >>$tmp <<EOF
  36 [Service]
  37 ExecStopPost=+/usr/local/bin/sysd-prom-fail $ser_name
  38 EOF
  39
  40 dir=/etc/systemd/system/$ser_name.service.d
  41 mkdir -p $dir
  42 out=$(rsync -cipgo --chmod=644 --chown=root:root $tmp $dir/sysd-prom-fail.conf)
  43 if [[ $out ]]; then
  44   echo $0: systemctl daemon-reload
  45   systemctl daemon-reload
  46   if systemctl is-active $ser_name &>/dev/null; then
  47     echo $0: systemctl restart $ser_name
  48     systemctl restart $ser_name ||:
  49   fi
  50 fi
  51
  52 # todo: make uninstall script