Start: 2023-05-22 00:49:21
Finished: 2023-05-22 00:57:52
The Nautilus application development team observed some performance issues with one of the application that is deployed in Kubernetes cluster. After looking into number of factors, the team has suggested to use some in-memory caching utility for DB service. After number of discussions, they have decided to use Redis. Initially they would like to deploy Redis on kubernetes cluster for testing and later they will move it to production. Please find below more details about the task:
Create a redis deployment with following parameters:
-
Create a config map called my-redis-config having maxmemory 2mb in redis-config.
-
Name of the deployment should be redis-deployment, it should use redis:alpine image and container name should be redis-container. Also make sure it has only 1 replica.
-
The container should request for 1 CPU.
-
Mount 2 volumes:
a. An Empty directory volume called data at path /redis-master-data.
b. A configmap volume called redis-config at path /redis-master.
c. The container should expose the port 6379.
Finally, redis-deployment should be in an up and running state.
Begin by checking all the existing resources.
kubectl get all
kubectl get pods
kubectl get svc Create the redis.yml based on the requirements.
---
kind: ConfigMap
apiVersion: v1
metadata:
name: my-redis-config
data:
maxmemory: 2mb
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-deployment
spec:
replicas: 1
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
containers:
- name: redis-container
image: redis:alpine
ports:
- containerPort: 6379
resources:
requests:
cpu: "1000m"
volumeMounts:
- mountPath: /redis-master-data
name: data
- mountPath: /redis-master
name: redis-config
volumes:
- name: data
emptyDir: {}
- name: redis-config
configMap:
name: my-redis-config Apply the YAML file.
kubectl apply -f redis.yml Check the resources.
thor@jump_host ~$ kubectl get pods
NAME READY STATUS RESTARTS AGE
redis-deployment-544d696886-t5dn6 1/1 Running 0 47s
thor@jump_host ~$
thor@jump_host ~$ kubectl get deployment
NAME READY UP-TO-DATE AVAILABLE AGE
redis-deployment 1/1 1 1 52s
thor@jump_host ~$
thor@jump_host ~$ kubectl logs -f deployment/redis-deployment
1:C 21 May 2023 16:56:13.386 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
1:C 21 May 2023 16:56:13.386 # Redis version=7.0.11, bits=64, commit=00000000, modified=0, pid=1, just started
1:C 21 May 2023 16:56:13.386 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
1:M 21 May 2023 16:56:13.387 * monotonic clock: POSIX clock_gettime
1:M 21 May 2023 16:56:13.388 * Running mode=standalone, port=6379.
1:M 21 May 2023 16:56:13.389 # Server initialized
1:M 21 May 2023 16:56:13.390 * Ready to accept connections