k8s.io/kubernetes@v1.29.3/test/images/pets/redis-installer/on-start.sh (about) 1 #!/usr/bin/env bash 2 3 # Copyright 2016 The Kubernetes Authors. 4 # 5 # Licensed under the Apache License, Version 2.0 (the "License"); 6 # you may not use this file except in compliance with the License. 7 # You may obtain a copy of the License at 8 # 9 # http://www.apache.org/licenses/LICENSE-2.0 10 # 11 # Unless required by applicable law or agreed to in writing, software 12 # distributed under the License is distributed on an "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 # See the License for the specific language governing permissions and 15 # limitations under the License. 16 17 set -e 18 19 CFG=/opt/redis/redis.conf 20 HOSTNAME=$(hostname) 21 DATADIR="/data" 22 # Port on which redis listens for connections. 23 PORT=6379 24 25 # Ping everyone but ourself to see if there's a master. Only one pet starts at 26 # a time, so if we don't see a master we can assume the position is ours. 27 while read -ra LINE; do 28 if [[ "${LINE[0]}" == *"${HOSTNAME}"* ]]; then 29 sed -i -e "s|^bind.*$|bind ${LINE[0]}|" ${CFG} 30 elif [ "$(/opt/redis/redis-cli -h "${LINE[0]}" info | grep role | sed 's,\r$,,')" = "role:master" ]; then 31 # TODO: More restrictive regex? 32 sed -i -e "s|^# slaveof.*$|slaveof ${LINE[0]} ${PORT}|" ${CFG} 33 fi 34 done 35 36 # Set the data directory for append only log and snapshot files. This should 37 # be a persistent volume for consistency. 38 sed -i -e "s|^.*dir .*$|dir ${DATADIR}|" ${CFG} 39 40 # The append only log is written for every SET operation. Without this setting, 41 # redis just snapshots periodically which is only safe for a cache. This will 42 # produce an appendonly.aof file in the configured data dir. 43 sed -i -e "s|^appendonly .*$|appendonly yes|" ${CFG} 44 45 # Every write triggers an fsync. Recommended default is "everysec", which 46 # is only safe for AP applications. 47 sed -i -e "s|^appendfsync .*$|appendfsync always|" ${CFG} 48 49