apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
selector:
matchLables:
app: nginx
replicas: 3
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: bginx:1.7.9
ports:
- containerPort: 80
error is:
error validating "app.yaml": error validating data: [ValidationError(Deployment.spec.selector): unknown field "matchLables" in io.k8s.apimachinery.pkg.apis.meta.v1.LabelSelector, ValidationError(Deployment.spec): unknown field "spec" in io.k8s.api.apps.v1.DeploymentSpec];
There is a typo in matchLables, it should be matchLabels. Additionally, you have the wrong indentation of spec.template.spec and of its content.
Something like the following example should work:
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
selector:
matchLabels:
app: nginx
replicas: 3
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: bginx:1.7.9
ports:
- containerPort: 80
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
I'm trying to deploy this yaml in my kubernetes cluster into one of my nodes
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment-1
labels:
app: nginx
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
ports:
- containerPort: 80
But when I try to deploy it with the command, I get this error message
pi#k8s-master-rasp4:~ $ kubectl apply -f despliegue-nginx.yaml -l kubernetes.io/hostname=k8s-worker-1
error: no objects passed to apply
Anyone knows where the problem could be?
Thanks
You are not allowed to use label selector (-l) with kubectl apply....
Use nodeSelector to assign pods to specific nodes:
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment-1
labels:
app: nginx
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
nodeSelector:
kubernetes.io/hostname: k8s-worker-1 # <-- updated here!
containers:
- name: nginx
image: nginx
ports:
- containerPort: 80
After creating a service and an endpoint object ->
---
apiVersion: v1
kind: Service
metadata:
name: external-service
namespace: default
spec:
ports:
- protocol: TCP
port: 8200
---
apiVersion: v1
kind: Endpoints
metadata:
name: external-service
subsets:
- addresses:
- ip: $EXTERNAL_ADDR
ports:
- port: 8200
How can I point to the service in the deployment.yaml file. I want to remove the hardcoded IP the env variable
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: devwebapp
labels:
app: devwebapp
spec:
replicas: 1
selector:
matchLabels:
app: devwebapp
template:
metadata:
labels:
app: devwebapp
spec:
serviceAccountName: internal-app
containers:
- name: app
image: app:k8s
imagePullPolicy: Always
env:
- name: ADDRESS
value: "http://$EXTERNAL_SERVICE:8200"
Simply changing the value to http://external-service didn't help.
Thank you in advance!
I had to set the value to http://external-service:8200. The port was specified in the Endpoints so didn't bother to add it in the deployment.
you don't need to create endpoints separately just use selector in service spec. it will automatically create desired endpoints.
this one will work for you:
---
apiVersion: v1
kind: Service
metadata:
name: external-service
namespace: default
spec:
selector:
app: devwebapp
ports:
- protocol: TCP
port: 8200
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: devwebapp
labels:
app: devwebapp
spec:
replicas: 1
selector:
matchLabels:
app: devwebapp
template:
metadata:
labels:
app: devwebapp
spec:
serviceAccountName: internal-app
containers:
- name: app
image: app:k8s
imagePullPolicy: Always
ports:
- containerPort: 8200
env:
- name: ADDRESS
value: http://external-service:8200
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: ${K8S_IMAGE} #<--- here
Basically this error means "can't find/understand" the image you've set
I am trying to update a label using kubectl.
When I use apply it works but it doesn't when doing a patch.
I tried kubectl patch deployment nginx-deployment --patch "$(cat nginx.yaml)"; it returns back no change where I would expect to get back a label change.
These are the only changes on my yaml.
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: testLab
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.7.8
ports:
- containerPort: 80
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: helloWorld
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.7.8
ports:
- containerPort: 80
Is there a restriction on what patch updates or it am I doing something wrong?
I also tried specifying --type strategic and other types but none seem to work.
After executing command kubectl patch on your second file (where you changed label) you should see following error:
Error from server: cannot restore map from string
After executing command kubectl apply on this file you should get following error :
error: error validating "nginx.yaml": error validating data: ValidationError(Deployment.metadata): unknown field "label" in io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta; if you choose to ignore these errors, turn validation off with --validate=false
Your deployment file should looks like this:
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: helloWorld
spec:
replicas: 3
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.7.8
ports:
- containerPort: 8
You missed to add space after app label.
Add space and then execute command kubectl patch deployment nginx-deployment --patch "$(cat nginx.yaml)" once again.
Here are useful documentations: labels-selectors, kubernetes-deployments, kubernetes-patch.
You should be having something like this in your metadata:
metadata:
name: nginx-deployment
labels:
label: testLabel2