I have created an EC2 and install EKS on it.Then i created cluster and install docker image on it.
Now i'm trying to deploy this image to the docker container using given yaml and getting error.
Error in creating Deployment YAML on kubernetes
spec.template.spec.containers[1].image: Required value
spec.template.spec.containers[2].image: Required value
--i can see the image on ec2 docker.
my yaml is like this:
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: premiumservice
labels:
app: premium-service
namespace:
annotations:
monitoring: "true"
spec:
replicas: 1
selector:
matchLabels:
app: premium-service
template:
metadata:
labels:
app: premium-service
spec:
containers:
- image: "mp3-image1:latest"
name: premiumservice
ports:
- containerPort: 80
env:
- name: type1
value: "xyz"
- name: type2
value: "abc"
The deployment yaml have indentation problem near the env section and should look like below:
apiVersion: apps/v1
kind: Deployment
metadata:
name: premiumservice
labels:
app: premium-service
namespace:
annotations:
monitoring: "true"
spec:
replicas: 1
selector:
matchLabels:
app: premium-service
template:
metadata:
labels:
app: premium-service
spec:
containers:
- image: mp3-image1:latest
name: premiumservice
ports:
- containerPort: 80
env:
- name: type1
value: "xyz"
- name: type2
value: "abc"
This may be totally unrelated, but I had the same issue with a k8s deployment file that had variable substitution in the image but the env variable it was referencing wasn't defined.
...
spec:
containers:
- name: indexing-queue
image: ${K8S_IMAGE} #<--- here
Basically this error means "can't find/understand" the image you've set
Related
I am pulling my hair out here. I deployed my template, deleted it, and then I go to deploy it again without any changes and am getting the following error:
The Deployment "blog" is invalid: spec.template.metadata.labels: Invalid value: map[string]string(nil): selector does not match template labels
My deployment yaml is below and as you can see the metadata and selector labels are both web, so I have no idea what the error is trying to tell me:
apiVersion: apps/v1
kind: Deployment
metadata:
name: blog
labels:
app: web
spec:
selector:
matchLabels:
app: web
template:
metadata:
labels:
app: web
replicas: 1
template:
spec:
containers:
- env:
image: test_blog:latest
imagePullPolicy: Always
name: blog
ports:
- containerPort: 8080
You have two template block. I think thats the problem. Try this.
apiVersion: apps/v1
kind: Deployment
metadata:
name: blog
labels:
app: web
spec:
selector:
matchLabels:
app: web
replicas: 1
template:
metadata:
labels:
app: web
spec:
containers:
- env:
image: test_blog:latest
imagePullPolicy: Always
name: blog
ports:
- containerPort: 8080
My requirement is inside pod there is a file
location : /mnt/secrets-store/environment
In kubernetes manifest file i would like to set environment variable . Values contains above location flat file
pls share your thought how to achieve that
I have tried below option in the k8s yml file but not working
apiVersion: apps/v1
kind: Deployment
metadata:
name: sample-api
namespace: dev
spec:
replicas: 3
selector:
matchLabels:
app: sample-api
template:
metadata:
labels:
app: sample-api
aadpodidbinding: azure-pod-identity-binding-selector
spec:
containers:
- name: sample-api
image: sample.azurecr.io/sample:11129
imagePullPolicy: Always
ports:
- containerPort: 80
env:
- name: "ASPNETCORE_ENVIRONMENT"
value: "Kubernetes"
- name: NRIA_DISPLAY_NAME
value: $("/usr/bin/cat" "/mnt/secrets-store/environment")
I'm trying to set up a manifest with specifying the ASPNETCORE_ENVIRONMENT env variable:
kubectl version 1.18.10
kind: Deployment
apiVersion: apps/v1
metadata:
name: $(appName)
labels:
app: $(appName)
spec:
replicas: 2
selector:
matchLabels:
app: $(appName)
template:
metadata:
labels:
app: $(appName)
spec:
containers:
- name: $(appName)
image: xxx.azurecr.io/xxx:$(Build.BuildId)
ports:
- name: http
containerPort: 80
protocol: TCP
env:
- name: ASPNETCORE_ENVIRONMENT
value: Staging
However it's not working, validation tells me:
##[error]error: error validating "/home/vsts/work/_temp/Deployment_xxx6_1610541107518": error validating data: ValidationError(Deployment): unknown field "env" in io.k8s.api.apps.v1.Deployment; if you choose to ignore these errors, turn validation off with --validate=false
I'm using Azure Devops Release Pipeline Powershell Task "Generate Kubernetes Manifest file".
Ok it must've been wrong formatting or indentation.
The following file is working now:
kind: Deployment
apiVersion: apps/v1
metadata:
name: $(appName)
labels:
app: $(appName)
spec:
replicas: 2
selector:
matchLabels:
app: $(appName)
template:
metadata:
labels:
app: $(appName)
spec:
containers:
- name: $(appName)
image: xxx.azurecr.io/xxx:$(Build.BuildId)
ports:
- containerPort: 80
env:
- name: ASPNETCORE_ENVIRONMENT
value: Staging
I'm tying to create a deployment with 3 replicas, whcih will pull image from a private registry. I have stored the credentials in a secret and using the imagePullSecrets in the deployment file. Im getting below error in the deploy it.
error: error validating "private-reg-pod.yaml": error validating data: [ValidationError(Deployment.spec): unknown field "containers" in io.k8s.api.apps.v1.DeploymentSpec, ValidationError(Deployment.spec): unknown field "imagePullSecrets" in io.k8s.api.apps.v1.DeploymentSpec, ValidationError(Deployment.spec): missing required field "selector" in io.k8s.api.apps.v1.DeploymentSpec, ValidationError(Deployment.spec): missing required field "template" in io.k8s.api.apps.v1.DeploymentSpec]; if you choose to ignore these errors, turn validation off with --validate=false
Any help on this?
Below is my deployment file :
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: test-pod-deployment
labels:
app: test-pod
spec:
replicas: 3
selector:
matchLabels:
app: test-pod
template:
metadata:
labels:
app: test-pod
spec:
containers:
- name: test-pod
image: <private-registry>
imagePullSecrets:
- name: regcred
Thanks,
Sundar
Image section should be placed in container specification. ImagePullSecret should be placed in spec section so proper yaml file looks like this (please note indent):
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: test-pod-deployment
labels:
app: test-pod
spec:
replicas: 3
selector:
matchLabels:
app: test-pod
template:
metadata:
labels:
app: test-pod
spec:
containers:
- name: test-pod
image: <private-registry>
imagePullSecrets:
- name: regcred
Very common issue with kubernetes Deployment.
The valid format for pulling image from private repository in your Kubernetes Deployment file is:
spec:
imagePullSecrets:
- name: <your secret name>
containers:
Please make sure you have created the secret,then please try to make it like the below .
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: test-pod-deployment
labels:
app: test-pod
spec:
replicas: 3
selector:
matchLabels:
app: test-pod
template:
metadata:
labels:
app: test-pod
spec:
containers:
- name: test-pod
image: nginx
imagePullSecrets:
- name: regcred
Both #Jakub-Bujny and #itmaven are correct. The indentation is really important in creating and using .yaml (or .yml) file. The yaml file has been parsed based on these indentations. So, both of these are correct:
1)
spec:
imagePullSecrets:
- name: regcred
containers:
- name: test-pod
image:
2)
spec:
containers:
- name: test-pod
image: <private-registry>
imagePullSecrets:
- name: regcred
Note: before you used the imagePullSecrets you have to create that using the following code:
kubectl create secret docker-registry <private-registry> --docker-server=
<cluster_CA_domain>:[some port] --docker-username=<user_name> --docker-
password=<user_password> --docker-email=<user_email>
also check if the imagePullSecrets was created successfully using the following code:
kubectl get secret
I am a bit confused on this kubernetes yaml file. The first 'spec' says there need to be 3 replicas all the time.
How about the second 'spec' that just above 'containers'. Also, what does the template thing do ?
apiVersion: v1
kind: ReplicationController
metadata:
name: node-js
labels:
name: node-js
spec:
replicas: 3
selector:
name: node-js
template:
metadata:
labels:
name: node-js
spec:
containers:
- name: node-js
image: jonbaier/node-express-info:latest
ports:
- containerPort: 80
The first spec is for settings of the ReplicationController itself.
Block named "template" and "spec" in it is a pod template with a configuration of the pod which you want to run by your replication controller:
apiVersion: v1
kind: ReplicationController
metadata:
name: node-js
labels:
name: node-js
spec: # related to ReplicationController itself
replicas: 3 # value 3 mean that you want to launch 3 replicas of a pod
selector:
name: node-js
template: # section with a pod template
metadata:
labels:
name: node-js
spec: # related to a container you want to run
containers:
- name: node-js
image: jonbaier/node-express-info:latest
ports:
- containerPort: 80