website/content/en/docs/tutorials/configuration/configure-redis-using-confi...

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---
reviewers:
- eparis
- pmorie
title: Configuring Redis using a ConfigMap
content_template: templates/tutorial
---
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This page provides a real world example of how to configure Redis using a ConfigMap and builds upon the [Configure Containers Using a ConfigMap](/docs/tasks/configure-pod-container/configure-pod-configmap/) task.
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{{% capture objectives %}}
* Create a `kustomization.yaml` file containing:
* a ConfigMap generator
* a Pod resource config using the ConfigMap
* Apply the directory by running `kubectl apply -k ./`
* Verify that the configuration was correctly applied.
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* {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
* The example shown on this page works with `kubectl` 1.14 and above.
* Understand [Configure Containers Using a ConfigMap](/docs/tasks/configure-pod-container/configure-pod-configmap/).
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## Real World Example: Configuring Redis using a ConfigMap
You can follow the steps below to configure a Redis cache using data stored in a ConfigMap.
First create a `kustomization.yaml` containing a ConfigMap from the `redis-config` file:
{{< codenew file="pods/config/redis-config" >}}
```shell
curl -OL https://k8s.io/examples/pods/config/redis-config
cat <<EOF >./kustomization.yaml
configMapGenerator:
- name: example-redis-config
files:
- redis-config
EOF
```
Add the pod resource config to the `kustomization.yaml`:
{{< codenew file="pods/config/redis-pod.yaml" >}}
```shell
curl -OL https://raw.githubusercontent.com/kubernetes/website/master/content/en/examples/pods/config/redis-pod.yaml
cat <<EOF >>./kustomization.yaml
resources:
- redis-pod.yaml
EOF
```
Apply the kustomization directory to create both the ConfigMap and Pod objects:
```shell
kubectl apply -k .
```
Examine the created objects by
```shell
> kubectl get -k .
NAME DATA AGE
configmap/example-redis-config-dgh9dg555m 1 52s
NAME READY STATUS RESTARTS AGE
pod/redis 1/1 Running 0 52s
```
In the example, the config volume is mounted at `/redis-master`.
It uses `path` to add the `redis-config` key to a file named `redis.conf`.
The file path for the redis config, therefore, is `/redis-master/redis.conf`.
This is where the image will look for the config file for the redis master.
Use `kubectl exec` to enter the pod and run the `redis-cli` tool to verify that
the configuration was correctly applied:
```shell
kubectl exec -it redis redis-cli
127.0.0.1:6379> CONFIG GET maxmemory
1) "maxmemory"
2) "2097152"
127.0.0.1:6379> CONFIG GET maxmemory-policy
1) "maxmemory-policy"
2) "allkeys-lru"
```
Delete the created pod:
```shell
kubectl delete pod redis
```
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* Learn more about [ConfigMaps](/docs/tasks/configure-pod-container/configure-pod-configmap/).
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