zookeeper
ZooKeeper Overview
Secure your stack with a hardened ZooKeeper image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies contained in the image.
Use Apache ZooKeeper to run a centralized service for coordinating highly distributed systems. Originally a sub-project of Hadoop, ZooKeeper is recognized as a reliable choice for distributed coordination.
Try It Out
To take the Minimus ZooKeeper image for a test run, we will set up a Docker bridge network, start a ZooKeeper server instance, and connect to it using a second ZooKeeper node.
First, create the custom Docker network:
docker network create minimus-zk-netNext, run a ZooKeeper server instance and expose the default port 2181:
docker run -d \
--name minimus-zookeeper \
--network minimus-zk-net \
--restart always \
-p 2181:2181 \
reg.mini.dev/zookeeperFinally, run a ZooKeeper node and connect to the ZooKeeper server over the custom Docker network:
docker run --rm \
--network minimus-zk-net \
reg.mini.dev/zookeeper \
zkCli.sh -server minimus-zookeeper:2181The CLI session will print the client environment details and then show the following messages before it exits:
...Initiating client connection
...Welcome to ZooKeeper!
...Session establishment complete on server minimus-zookeeper/172.21.0.2:2181, session id ...Technical Considerations
The ZooKeeper image provided by Minimus is a slim, security-hardened alternative to the public image from Docker Hub. The images are largely interchangeable, with a few differences as noted below.
ZooKeeper built by Minimus:
- Runs as non-root by default for a security-first approach that protects against privilege escalation attacks. The public image runs as root.
- The default working directory is
/usr/share/java/zookeeper/. The public image working directory defaults to/apache-zookeeper-3.9.3-bin. - Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.
The Payoff
A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.
- See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
- Review the compliance report to see the default hardening and security configurations for the image.
Terms & Info
Trademark
This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.
Disclaimer
Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.