how can i add password to redis in helm template - kubernetes

Question

I have described helm template for redis"
apiVersion: apps/v1
kind: Deployment
metadata:
name: "{{ .Values.rds.service.name }}"
namespace: {{ .Values.environment.namespace }}
spec:
selector:
matchLabels:
app: "{{ .Values.rds.service.name }}"
template:
metadata:
labels:
app: "{{ .Values.rds.service.name }}"
component_type: "{{ .Values.component_type.name }}"
spec:
containers:
- image: "{{ .Values.rds.docker.hub }}{{ .Values.rds.docker.image }}"
name: "{{ .Values.rds.service.name }}"
env:
- name: REDIS_PASSWORD
value: "9dtjger"
ports:
- containerPort: {{ toYaml .Values.rds.service.port | indent 5 }}
resources:
requests:
memory: "{{ .Values.rds.resources.requests.memory }}"
cpu: "{{ .Values.rds.resources.requests.cpu }}"
limits:
memory: "{{ .Values.rds.resources.limits.memory }}"
cpu: "{{ .Values.rds.resources.limits.cpu }}"
---
apiVersion: v1
kind: Service
metadata:
name: "{{ .Values.rds.service.name }}"
namespace: "{{ .Values.environment.namespace }}"
annotations:
service.beta.kubernetes.io/aws-load-balancer-backend-protocol: tcp
service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: "3600"
service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true"
service.beta.kubernetes.io/aws-load-balancer-internal: "true"
service.beta.kubernetes.io/aws-load-balancer-proxy-protocol: '*'
service.beta.kubernetes.io/aws-load-balancer-type: "nlb"
service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags: Department=sre,Team=engage-devops,Environment=ev-lab
external-dns.alpha.kubernetes.io/hostname: {{ .Values.rds.service.name }}.{{ .Values.environment.namespace }}.lab.engage.ringcentral.com
spec:
ports:
- protocol: TCP
port: {{ toYaml .Values.rds.service.port | indent 5 }}
selector:
app: "{{ .Values.rds.service.name }}"
type: LoadBalancer
Then I deployed it via kubectl apply:
kubectl -n mybanespace describe pod rds-5b6996bf-m6pbr
Name: rds-5b6996bf-m6pbr
Namespace: okta-cc-6
Priority: 0
Node: ip-10-8-29-49.eu-central-1.compute.internal/10.8.29.49
Start Time: Mon, 03 Aug 2020 21:55:09 +0300
Labels: app=rds
component_type=evt
pod-template-hash=5b6996bf
Annotations: kubernetes.io/psp: eks.privileged
Status: Running
IP: 10.8.29.39
IPs: <none>
Controlled By: ReplicaSet/rds-5b6996bf
Containers:
rds:
Container ID: docker://3be73237324f8ba8c0a38420fceffcee65eb386e93afd8efa309212527761c74
Image: redis:6.0.6
Image ID: docker-pullable://redis#sha256:d86d6739fab2eaf590cfa51eccf1e9779677bd2502894579bcf3f80cb37b18d4
Port: 6379/TCP
Host Port: 0/TCP
State: Running
Started: Mon, 03 Aug 2020 21:55:14 +0300
Ready: True
Restart Count: 0
Limits:
cpu: 40m
memory: 100Mi
Requests:
cpu: 2m
memory: 10Mi
Environment:
REDIS_PASSWORD: 9dtjger
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-78c7b (ro)
When I try to connect to redis with the password I get error 'Warning: AUTH failed' if I connect without password - connection successful. I don't know why the password doesn't work when I use :
env:
- name: REDIS_PASSWORD
value: "9dtjger"
In docker-compose locally I cannot connect without a password.
How can I set a password for Redis in Kubernetes?

Answer 1

You didn't specify how you installed Redis❓ (Which Helm Chart). Essentially adding the --requirepass ${REDIS_PASSWORD}" and --masterauth ${REDIS_PASSWORD}" should do 👌.
If for example, you used the Bitnami Helm chart, you can use the usePassword parameter. Then in the template, it gets used here.
✌️