bitnami/redis-sentinel
Bitnami container image for Redis Sentinel
100M+
Redis® Sentinel provides high availability for Redis. Redis Sentinel also provides other collateral tasks such as monitoring, notifications and acts as a configuration provider for clients.
Overview of Redis® Sentinel Disclaimer: Redis is a registered trademark of Redis Ltd. Any rights therein are reserved to Redis Ltd. Any use by Bitnami is for referential purposes only and does not indicate any sponsorship, endorsement, or affiliation between Redis Ltd.
docker run --name redis-sentinel -e REDIS_MASTER_HOST=redis bitnami/redis-sentinel:latest
Warning: This quick setup is only intended for development environments. You are encouraged to change the insecure default credentials and check out the available configuration options in the Environment Variables section for a more secure deployment.
Looking to use Redis® Sentinel in production? Try VMware Tanzu Application Catalog, the commercial edition of the Bitnami catalog.
Non-root container images add an extra layer of security and are generally recommended for production environments. However, because they run as a non-root user, privileged tasks are typically off-limits. Learn more about non-root containers in our docs.
Starting December 10th 2024, only the latest stable branch of any container will receive updates in the free Bitnami catalog. To access up-to-date releases for all upstream-supported branches, consider upgrading to Bitnami Premium. Previous versions already released will not be deleted. They are still available to pull from DockerHub.
Please check the Bitnami Premium page in our partner Arrow Electronics for more information.
Dockerfile
linksLearn more about the Bitnami tagging policy and the difference between rolling tags and immutable tags in our documentation page.
You can see the equivalence between the different tags by taking a look at the tags-info.yaml
file present in the branch folder, i.e bitnami/ASSET/BRANCH/DISTRO/tags-info.yaml
.
Subscribe to project updates by watching the bitnami/containers GitHub repo.
The recommended way to get the Bitnami Redis(R) Sentinel Docker Image is to pull the prebuilt image from the Docker Hub Registry.
docker pull bitnami/redis-sentinel:latest
To use a specific version, you can pull a versioned tag. You can view the list of available versions in the Docker Hub Registry.
docker pull bitnami/redis-sentinel:[TAG]
If you wish, you can also build the image yourself by cloning the repository, changing to the directory containing the Dockerfile and executing the docker build
command. Remember to replace the APP
, VERSION
and OPERATING-SYSTEM
path placeholders in the example command below with the correct values.
git clone https://github.com/bitnami/containers.git
cd bitnami/APP/VERSION/OPERATING-SYSTEM
docker build -t bitnami/APP:latest .
Using Docker container networking, a Redis(R) server running inside a container can easily be accessed by your application containers.
Containers attached to the same network can communicate with each other using the container name as the hostname.
In this example, we will create a Redis(R) Sentinel instance that will monitor a Redis(R) instance that is running on the same docker network.
Step 1: Create a network
docker network create app-tier --driver bridge
Step 2: Launch the Redis(R) instance
Use the --network app-tier
argument to the docker run
command to attach the Redis(R) container to the app-tier
network.
docker run -d --name redis-server \
-e ALLOW_EMPTY_PASSWORD=yes \
--network app-tier \
bitnami/redis:latest
Step 3: Launch your Redis(R) Sentinel instance
Finally we create a new container instance to launch the Redis(R) client and connect to the server created in the previous step:
docker run -it --rm \
-e REDIS_MASTER_HOST=redis-server \
--network app-tier \
bitnami/redis-sentinel:latest
Customizable environment variables
Name | Description | Default Value |
---|---|---|
REDIS_SENTINEL_DATA_DIR | Redis data directory | ${REDIS_SENTINEL_VOLUME_DIR}/data |
REDIS_SENTINEL_DISABLE_COMMANDS | Commands to disable in Redis | nil |
REDIS_SENTINEL_DATABASE | Default Redis database | redis |
REDIS_SENTINEL_AOF_ENABLED | Enable AOF | yes |
REDIS_SENTINEL_HOST | Redis Sentinel host | nil |
REDIS_SENTINEL_MASTER_NAME | Redis Sentinel master name | nil |
REDIS_SENTINEL_PORT_NUMBER | Redis Sentinel host port | $REDIS_SENTINEL_DEFAULT_PORT_NUMBER |
REDIS_SENTINEL_QUORUM | Minimum number of sentinel nodes in order to reach a failover decision | 2 |
REDIS_SENTINEL_DOWN_AFTER_MILLISECONDS | Time (in milliseconds) to consider a node to be down | 60000 |
REDIS_SENTINEL_FAILOVER_TIMEOUT | Specifies the failover timeout (in milliseconds) | 180000 |
REDIS_SENTINEL_MASTER_REBOOT_DOWN_AFTER_PERIOD | Specifies the timeout (in milliseconds) for rebooting a master | 0 |
REDIS_SENTINEL_RESOLVE_HOSTNAMES | Enables hostnames support | yes |
REDIS_SENTINEL_ANNOUNCE_HOSTNAMES | Announce hostnames | no |
ALLOW_EMPTY_PASSWORD | Allow password-less access | no |
REDIS_SENTINEL_PASSWORD | Password for Redis | nil |
REDIS_MASTER_USER | Redis master node username | nil |
REDIS_MASTER_PASSWORD | Redis master node password | nil |
REDIS_SENTINEL_ANNOUNCE_IP | IP address used to gossip its presence | nil |
REDIS_SENTINEL_ANNOUNCE_PORT | Port used to gossip its presence | nil |
REDIS_SENTINEL_TLS_ENABLED | Enable TLS for Redis authentication | no |
REDIS_SENTINEL_TLS_PORT_NUMBER | Redis TLS port (requires REDIS_SENTINEL_ENABLE_TLS=yes) | 26379 |
REDIS_SENTINEL_TLS_CERT_FILE | Redis TLS certificate file | nil |
REDIS_SENTINEL_TLS_KEY_FILE | Redis TLS key file | nil |
REDIS_SENTINEL_TLS_CA_FILE | Redis TLS CA file | nil |
REDIS_SENTINEL_TLS_DH_PARAMS_FILE | Redis TLS DH parameter file | nil |
REDIS_SENTINEL_TLS_AUTH_CLIENTS | Enable Redis TLS client authentication | yes |
REDIS_MASTER_HOST | Redis master host (used by slaves) | redis |
REDIS_MASTER_PORT_NUMBER | Redis master host port (used by slaves) | 6379 |
REDIS_MASTER_SET | Redis sentinel master set | mymaster |
Read-only environment variables
Name | Description | Value |
---|---|---|
REDIS_SENTINEL_VOLUME_DIR | Persistence base directory | /bitnami/redis-sentinel |
REDIS_SENTINEL_BASE_DIR | Redis installation directory | ${BITNAMI_ROOT_DIR}/redis-sentinel |
REDIS_SENTINEL_CONF_DIR | Redis configuration directory | ${REDIS_SENTINEL_BASE_DIR}/etc |
REDIS_SENTINEL_DEFAULT_CONF_DIR | Redis default configuration directory | ${REDIS_SENTINEL_BASE_DIR}/etc.default |
REDIS_SENTINEL_MOUNTED_CONF_DIR | Redis mounted configuration directory | ${REDIS_SENTINEL_BASE_DIR}/mounted-etc |
REDIS_SENTINEL_CONF_FILE | Redis configuration file | ${REDIS_SENTINEL_CONF_DIR}/sentinel.conf |
REDIS_SENTINEL_LOG_DIR | Redis logs directory | ${REDIS_SENTINEL_BASE_DIR}/logs |
REDIS_SENTINEL_TMP_DIR | Redis temporary directory | ${REDIS_SENTINEL_BASE_DIR}/tmp |
REDIS_SENTINEL_PID_FILE | Redis PID file | ${REDIS_SENTINEL_TMP_DIR}/redis-sentinel.pid |
REDIS_SENTINEL_BIN_DIR | Redis executables directory | ${REDIS_SENTINEL_BASE_DIR}/bin |
REDIS_SENTINEL_DAEMON_USER | Redis system user | redis |
REDIS_SENTINEL_DAEMON_GROUP | Redis system group | redis |
REDIS_SENTINEL_DEFAULT_PORT_NUMBER | Redis Sentinel host port | 26379 |
Starting with version 6, Redis(R) adds the support for SSL/TLS connections. Should you desire to enable this optional feature, you may use the aforementioned REDIS_SENTINEL_TLS_*
environment variables to configure the application.
When enabling TLS, conventional standard traffic is disabled by default. However this new feature is not mutually exclusive, which means it is possible to listen to both TLS and non-TLS connection simultaneously. To enable non-TLS traffic, set REDIS_SENTINEL_PORT_NUMBER
to another port different than 0
.
Using docker run
$ docker run --name redis-sentinel \
-v /path/to/certs:/opt/bitnami/redis/certs \
-v /path/to/redis-sentinel/persistence:/bitnami \
-e REDIS_MASTER_HOST=redis \
-e REDIS_SENTINEL_TLS_ENABLED=yes \
-e REDIS_SENTINEL_TLS_CERT_FILE=/opt/bitnami/redis/certs/redis.crt \
-e REDIS_SENTINEL_TLS_KEY_FILE=/opt/bitnami/redis/certs/redis.key \
-e REDIS_SENTINEL_TLS_CA_FILE=/opt/bitnami/redis/certs/redisCA.crt \
bitnami/redis-cluster:latest
bitnami/redis-sentinel:latest
Alternatively, you may also provide with this configuration in your custom configuration file.
The image looks for configurations in /bitnami/redis-sentinel/conf/
. You can mount a volume at /bitnami
and copy/edit the configurations in the /path/to/redis-persistence/redis-sentinel/conf/
. The default configurations will be populated to the conf/
directory if it's empty.
Step 1: Run the Redis(R) Sentinel image
Run the Redis(R) Sentinel image, mounting a directory from your host.
docker run --name redis-sentinel \
-e REDIS_MASTER_HOST=redis \
-v /path/to/redis-sentinel/persistence:/bitnami \
bitnami/redis-sentinel:latest
Step 2: Edit the configuration
Edit the configuration on your host using your favorite editor.
vi /path/to/redis-persistence/redis-sentinel/conf/redis.conf
Step 3: Restart Redis(R)
After changing the configuration, restart your Redis(R) container for changes to take effect.
docker restart redis
Refer to the Redis(R) configuration manual for the complete list of configuration options.
The Bitnami Redis(R) Sentinel Docker Image sends the container logs to the stdout
. To view the logs:
docker logs redis
You can configure the containers logging driver using the --log-driver
option if you wish to consume the container logs differently. In the default configuration docker uses the json-file
driver.
Bitnami provides up-to-date versions of Redis(R) Sentinel, including security patches, soon after they are made upstream. We recommend that you follow these steps to upgrade your container.
Step 1: Get the updated image
docker pull bitnami/redis-sentinel:latest
Step 2: Stop and backup the currently running container
Stop the currently running container using the command
docker stop redis
Next, take a snapshot of the persistent volume /path/to/redis-persistence
using:
rsync -a /path/to/redis-persistence /path/to/redis-persistence.bkp.$(date +%Y%m%d-%H.%M.%S)
Step 3: Remove the currently running container
docker rm -v redis
Step 4: Run the new image
Re-create your container from the new image.
docker run --name redis bitnami/redis-sentinel:latest
docker-compose.yaml
file has been removed, as it was solely intended for internal testing purposes.rootfs/
folder.root
user and the redis daemon was started as redis
user. From now own, both the container and the redis daemon run as user 1001
. As a consequence, the configuration files are writable by the user running the redis process. You can revert this behavior by changing USER 1001
to USER root
in the Dockerfile.We'd love for you to contribute to this container. You can request new features by creating an issue or submitting a pull request with your contribution.
If you encountered a problem running this container, you can file an issue. For us to provide better support, be sure to fill the issue template.
Copyright © 2025 Broadcom. The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.