diff --git a/doc/docker/environment-variables.md b/doc/docker/environment-variables.md
index 218451e..88221c0 100644
--- a/doc/docker/environment-variables.md
+++ b/doc/docker/environment-variables.md
@@ -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`)
diff --git a/rootfs/etc/cont-init.d/05-svc-dispatcher.sh b/rootfs/etc/cont-init.d/05-svc-dispatcher.sh
index ef44d62..b548311 100644
--- a/rootfs/etc/cont-init.d/05-svc-dispatcher.sh
+++ b/rootfs/etc/cont-init.d/05-svc-dispatcher.sh
@@ -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