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add redis sentinel support (#141)

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* add redis sentinel support

* update redis requirement warning to include REDIS_SENTINEL

* update docs
This commit is contained in:
Hayden 2020-11-18 18:38:54 -08:00 • committed by GitHub
parent d933e76783
commit 0c3e84d931
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2 changed files with 23 additions and 7 deletions
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2
doc/docker/environment-variables.md
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@ -22,6 +22,8 @@
* `DISPATCHER_NODE_ID`: Unique node ID for your dispatcher service
* `DISPATCHER_ARGS`: Additional args to pass to the [dispatcher service](https://github.com/librenms/librenms/blob/master/librenms-service.py)
* `REDIS_HOST`: Redis host for poller synchronization
* `REDIS_SENTINEL`: Redis Sentinel host for high availability Redis cluster
* `REDIS_SENTINEL_SERVICE`: Redis Sentinel service name (default `librenms`)
* `REDIS_PORT`: Redis port (default `6379`)
* `REDIS_PASSWORD`: Redis password
* `REDIS_DB`: Redis database (default `0`)

28
rootfs/etc/cont-init.d/05-svc-dispatcher.sh
View file

@ -33,6 +33,8 @@ SIDECAR_DISPATCHER=${SIDECAR_DISPATCHER:-0}
#REDIS_HOST=${REDIS_HOST:-localhost}
REDIS_PORT=${REDIS_PORT:-6379}
#REDIS_SENTINEL=${REDIS_SENTINEL:-localhost}
REDIS_SENTINEL_SERVICE=${REDIS_SENTINEL_SERVICE:-librenms}
file_env 'REDIS_PASSWORD'
REDIS_DB=${REDIS_DB:-0}
@ -85,18 +87,30 @@ if [ -n "$DISPATCHER_NODE_ID" ]; then
sed -i "s|^NODE_ID=.*|NODE_ID=$DISPATCHER_NODE_ID|g" "${LIBRENMS_PATH}/.env"
fi
# Redis
if [ -z "$REDIS_HOST" ]; then
>&2 echo "ERROR: REDIS_HOST must be defined"
exit 1
fi
echo "Setting Redis"
cat >> ${LIBRENMS_PATH}/.env <<EOL
# Redis Sentinel
if [ -n "REDIS_SENTINEL" ]; then
echo "Setting Redis Sentinel"
cat >> ${LIBRENMS_PATH}/.env <<EOL
REDIS_SENTINEL=${REDIS_SENTINEL}
REDIS_SENTINEL_SERVICE=${REDIS_SENTINEL_SERVICE}
REDIS_PORT=${REDIS_PORT}
REDIS_PASSWORD=${REDIS_PASSWORD}
REDIS_DB=${REDIS_DB}
EOL
else
# Redis
if [ -z "$REDIS_HOST" ]; then
>&2 echo "ERROR: REDIS_HOST or REDIS_SENTINEL must be defined"
exit 1
fi
echo "Setting Redis"
cat >> ${LIBRENMS_PATH}/.env <<EOL
REDIS_HOST=${REDIS_HOST}
REDIS_PORT=${REDIS_PORT}
REDIS_PASSWORD=${REDIS_PASSWORD}
REDIS_DB=${REDIS_DB}
EOL
fi
# Create service
mkdir -p /etc/services.d/dispatcher