Clear Linux* OS memcached container image

What is this image?

clearlinux/memcached is a Docker image with memcached running on top of the official clearlinux base image.

memcached is a free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

For other Clear Linux* OS based container images, see: https://hub.docker.com/u/clearlinux

Why use a clearlinux based image?

Clear Linux* OS is an open source, rolling release Linux distribution optimized for performance and security, from the Cloud to the Edge, designed for customization, and manageability.

Clear Linux* OS based container images use:

• Optimized libraries that are compiled with latest compiler versions and flags.
• Software packages that follow upstream source closely and update frequently.
• An aggressive security model and best practices for CVE patching.
• A multi-staged build approach to keep a reduced container image size.
• The same container syntax as the official images to make getting started easy.

To learn more about Clear Linux* OS, visit: https://clearlinux.org.

Deployment:

Deploy with Docker

The easiest way to get started with this image is by simply pulling it from Docker Hub.

*Note: This container uses the same syntax as the official memcached image.

1. Pull the image from Docker Hub:

   docker pull clearlinux/memcached
   

2. Start a memcached server

   docker run --network somenetwork --name memcached-server -d clearlinux/memcached
   

Deploy with Kubernetes

This image can also be deployed on a Kubernetes cluster, such as minikube.The following example YAML files are provided in the repository as reference for Kubernetes deployment:

• memcached-deployment.yaml: example using default configuration to create a basic memcached service.

• memcached-deployment-conf.yaml: example using your own custom configuration to create a memcached service.

Steps to deploy memcached on a Kubernetes cluster:

1. If you want to deploy memcached-deployment.yaml

   kubectl create -f memcached-deployment.yaml
   

   Or if you want to deploy memcached-deployment-conf.yaml

   kubectl create -f memcached-deployment-conf.yaml
   

2. Install telnet bundle and connect to the service, where 30100 is the port number defined in your service.

   swupd bundle-add netkit-telnet
   telnet <nodeIP> 30100
   

Build and modify:

The Dockerfiles for all Clear Linux* OS based container images are available at https://github.com/clearlinux/dockerfiles. These can be used to build and modify the container images.

1. Clone the clearlinux/dockerfiles repository.

   git clone https://github.com/clearlinux/dockerfiles.git
   

2. Change to the directory of the application:

   cd memcached/
   

3. Build the container image:

   docker build -t clearlinux/memcached .
   

   Refer to the Docker documentation for default build arguments. Additionally:

   • swupd_args - specifies arguments to pass to the Clear Linux* OS software manager. See the swupd man pages for more information.

Benchmark test:

memtier_benchmark is a high throughput benchmarking tool for memcache protocols

1. Pull the benchmark from redislabs:

   docker pull redislabs/memtier_benchmark
   

2. Run memtier benchmark test:

   docker run --rm --network somenetwork redislabs/memtier_benchmark ./memtier_benchmark --server=memcached-server -p 11211 -P memcache_text
   

Licenses

All licenses for the Clear Linux* Project and distributed software can be found at https://clearlinux.org/terms-and-policies