All Questions
Tagged with deployment kubernetes
584
questions
90
votes
3
answers
84k
views
How to configure a Kubernetes Multi-Pod Deployment
I would like to deploy an application cluster by managing my deployment via Kubernetes Deployment object. The documentation has me extremely confused. My basic layout has the following components that ...
- 2,900
56
votes
3
answers
30k
views
What is the difference between ReplicaSet and ReplicationController?
From what I can tell in the documentation, a ReplicaSet is created when running a Deployment. It seems to support some of the same features of a ReplicationController - scale up/down and auto restart, ...
- 1,017
48
votes
5
answers
109k
views
error when creating "deployment.yaml": Deployment in version "v1" cannot be handled as a Deployment
I am new to DevOps. I wrote a deployment.yaml file for a Kubernetes cluster I just created on Digital Oceans. Creating the deployment keeps bringing up errors that I can't decode for now. This is just ...
42
votes
1
answer
22k
views
Override env values defined in container spec
I have a configmap where I have defined the following key-value mapping in the data section:
apiVersion: v1
kind: ConfigMap
metadata:
namespace: test
name: test-config
data:
TEST: "...
- 6,497
39
votes
5
answers
80k
views
Deployment invalid: spec.template.metadata.labels: Invalid value
Deploying my service to production:
envsubst < ./kubernetes/pre-production/aks.yaml | kubectl apply -f -
I'm getting the following error:
The Deployment "moverick-mule-pre" is invalid:
spec....
- 573
36
votes
2
answers
59k
views
How to delete a deployment / image in kubernetes
I'm running kubernetes in azure.
I want to delete a specific deployment, with AZ AKS or kubectl.
The only info I've found is how to delete pods, but this is not what I'm looking for, since pods will ...
- 2,462
29
votes
2
answers
103k
views
Kubernetes deployment read-only filesystem error
I am facing an error while deploying Airflow on Kubernetes (precisely this version of Airflow https://github.com/puckel/docker-airflow/blob/1.8.1/Dockerfile) regarding writing permissions onto the ...
- 1,984
20
votes
2
answers
36k
views
How to check k8s deploy history?
I tried kubectl rollout history deployment/my-app, it returns only No rollout history found.
I think there exists a method to get all the deploy histories. It will be very helpful.
Reference ...
- 661
19
votes
5
answers
37k
views
How to merge two configmaps using volume mount in kubernetes
I am having two different config maps test-configmap and common-config. I tried to mount them at the same location, but one config map overwrote the other. Then I read about subPath and did not work.
...
- 351
17
votes
3
answers
4k
views
How should I manage deployments with kubernetes
I am hoping to find a good way to automate the process of going from code to a deployed application on my kubernetes cluster.
In order to build and deploy my app I need to first build the docker ...
- 832
16
votes
3
answers
15k
views
How do I get one pod to network to another pod in Kubernetes? (SIMPLE)
I've been banging my head against this wall on and off for a while. There is a ton of information on Kubernetes on the web, but it's all assuming so much knowledge that n00bs like me don't really have ...
- 2,249
16
votes
5
answers
11k
views
config-map kubernetes multiple environments
I am trying to deploy a Spring Boot application using configuration data from Kubernetes cluster. I have a simple RestController that prints a message by reading from a Kubernetes cluster.
...
- 261
16
votes
1
answer
9k
views
Why do I need save-config with kubctl apply?
kubectl apply <file.yaml> --save-config creates or updates a deployment and saves the deployment as metadata.
In the documentation it says
--save-config[=false]: If true, the configuration of ...
- 8,029
14
votes
1
answer
19k
views
How to verify that a Kubernetes deployment update has been successful?
I have a simple Kubernetes deployment. It consists of a single, unreplicated container. There is no service exposing the container. The container has a health check which checks that it is correctly ...
- 2,041
14
votes
4
answers
41k
views
kubernetes deployment- container not starting- error- InvalidImageName
Below is the Kubernetes deployment yaml file -container image section:
image: https://registry.ng.bluemix.net/****/test-service:test-branch-67
imagePullPolicy: Always
Below is the error message ...
- 161
13
votes
2
answers
13k
views
Kubernetes job and deployment
can I run a job and a deploy in a single config file/action
Where the deploy will wait for the job to finish and check if it's successful so it can continue with the deployment?
12
votes
7
answers
29k
views
How to Configure Pod initialization in a specific order in Kubernetes?
I want to know how I can start my deployments in a specific order. I am aware of initContainers but that is not working for me. I have a huge platform with around 20 deployments and 5 statefulsets ...
- 4,981
11
votes
3
answers
4k
views
Kubernetes Rolling Update not obeying 'maxUnavailable' replicas when redeployed in autoscaled conditions
In a nutshell, most of our apps are configured with the following strategy in the Deployment -
strategy:
rollingUpdate:
maxSurge: 25%
maxUnavailable: 25%
type: RollingUpdate
...
- 4,176
11
votes
2
answers
4k
views
How do I change a k8s Deployment's matchLabels without downtime?
Kubernetes kind Deployment doesn't allow patch changes in spec.selector.matchLabels, so any new deployments (managed by Helm or otherwise) that want to change the labels can't use the RollingUpdate ...
- 500
9
votes
4
answers
17k
views
cant delete pod using kubctl delete pod <pod>
I want to delete a pod permanently so I can create the deployment.yaml and derveice.yaml again from fresh, so I tried:
kubctl delete pod <pod>
and the pod is still there, also tried:
kubectl ...
- 1,468
8
votes
3
answers
18k
views
Application not showing in ArgoCD when applying yaml
I am trying to setup ArgoCD for gitops. I used the ArgoCD helm chart to deploy it to my local Docker Desktop Kubernetes cluster. I am trying to use the app of apps pattern for ArgoCD.
The problem is ...
- 344
8
votes
2
answers
8k
views
Kubernetes increase resources for all deployments
I am new to Kubernetes. I have a K8 cluster with multiple deployments (more than 150), each having more than 4 pods scaled.
I have a requirement to increase resource limits for all deployments in the ...
- 101
8
votes
1
answer
3k
views
Two Kubernetes Deployments with exactly the same pod labels
Let's say I have two deployments which are exactly the same apart from deployment name:
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-d
spec:
replicas: 3
selector:
matchLabels:
...
- 2,374
8
votes
3
answers
2k
views
Kubernetes multiple identical app and database deployments with different config
The dilemma: Deploy multiple app and database container pairs with identical docker image and code, but different config (different clients using subdomains).
What are some logical ways to approach ...
- 413
8
votes
2
answers
20k
views
why I am getting Read only file system error from Nginx?
Dear K8S community Team,
I am getting this error message from nginx when I deploy my application pod. My application an angular6 app is hosted inside an nginx server, which is deployed as a docker ...
- 121
7
votes
4
answers
9k
views
How to make an environment variable different across two pods of the same deployment in kubernetes?
Based on this it is possible to create environment variables that are the same across all the pods of the deployment that you define.
Is there a way to instruct Kubernetes deployment to create pods ...
- 465
6
votes
2
answers
16k
views
How to assign a Deployment to a specific Node Pool
I am fairly new to Kubernetes and was able to set up a workflow including ingress.
How can I specify which Deployments (not pods) go to a specific Node pool?
Also, do namespaces have any effect on the ...
- 305
6
votes
1
answer
11k
views
How to add nodeSelector to Deployment yaml file?
In the pods definition, we add the nodeSelector as a child of spec. But I'm not sure how to add this in deployment yaml file
are we supposed to add it in the template's spec-
apiVersion: apps/v1
kind: ...
- 97
6
votes
1
answer
3k
views
Helm Deployment vs Service
I am trying to understand k8s and helm.
When I create a helm chart, there are 2 files: service.yaml and deployment.yaml. Both of them have a name field.
If I understand correctly, the deployment ...
- 517
6
votes
3
answers
5k
views
StatefulSet recreates pod, why?
I have my deployment, where I have defined postgres statefulSet, however I have it without PVC so if pod is dead - all data is gone. If I will list all pods I see below picture:
pod1 - Running - 10 ...
- 869
6
votes
1
answer
36k
views
kubernetes deployment with args
As soon as I add,
spec:
containers:
- args:
- /bin/sh
- '-c'
- touch /tmp/healthy; touch /tmp/liveness
env:
to the deployment file, the application is ...
- 539
6
votes
1
answer
4k
views
Reload Kubernetes deployment to fetch new secret without downtime
In Kubernetes I have a Deployment that uses a secret and injects them as environment variables:
apiVersion: apps/v1
kind: Deployment
...
envFrom:
- secretRef:
name: api-env
I need to update ...
- 44.6k
6
votes
3
answers
10k
views
Kubernetes Deployment Hanging
Following the Deployment example in the docs. I'm trying to deploy the example nginx. With the following config:
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx-deployment
...
- 591
6
votes
1
answer
9k
views
error deploying image to kubernetes pod: "http: server gave HTTP response to HTTPS client"
i've got a kubernetes node, control-plane, which is untainted for deploying pods to. i've got a docker image sdmay23-42.ece.iastate.edu:5000/canvas-lti-frontend:v2.
i'm signed into docker cli. the ...
- 195
6
votes
1
answer
7k
views
Job invalid: `selector` not auto-generated
I have kubectl job that is invalid. I am debugging it and I extracted it to yaml file and I can see this:
apiVersion: batch/v1
kind: Job
metadata:
creationTimestamp: 2020-03-19T21:40:11Z
labels:
...
- 8,584
6
votes
3
answers
14k
views
how to set different environment variables of Deployment replicas in kubernetes
I have 4 k8s pods by setting the replicas of Deployment to 4 now.
apiVersion: v1
kind: Deployment
metadata:
...
spec:
...
replicas: 4
...
The POD will get items in a database and consume it, ...
- 61
6
votes
1
answer
3k
views
Kubernetes: Can not curl minikube pod
What happened:
I have been following this guidelines: https://kubernetes.io/docs/setup/minikube/ and I have the "connection refused" issue when trying to curl the application. Here are the steps I did
...
- 61
6
votes
2
answers
2k
views
Kubernetes Deployments, Pod and Container concepts
I have started recently getting familiar with Kubernetes, however while I do get the concept I have some questions I am unable to answer clearly through Kubernete's Concept and Documentation, and some ...
- 8,465
5
votes
2
answers
32k
views
How to force a redeploy with HELM
I would like to use HELM to force a deployment to redeploy on Openshift.
I am using "image@latest" for the deployment as I want to have the latest image whenever I deploy, but I don't want ...
- 1,732
5
votes
2
answers
4k
views
How to get current namespace from running pod usin client api
I am using kubernetes java client libraries in order to communicate with my kubernetes server.
My question is there any way programmatically get namespace of running pod from inside of which sent ...
- 869
5
votes
1
answer
12k
views
Kubectl create for persistent storage erroring out
I'm trying to deploy a persistent storage for couch DB and it is failing out with the error
kubectl create -f couch_persistant_deploy.yaml
error: error validating "couch_persistant_deploy.yaml&...
- 2,569
5
votes
4
answers
13k
views
Error from server (BadRequest): invalid character 's' looking for beginning of object key string
I am new to k8s and need some help, plz.
I want to make a change in a pod's deployment configuration and change readOnlyRootFilesystem to false.
This is what I am trying to do, but it doesn't seem to ...
- 51
5
votes
1
answer
4k
views
Couldn't find type: v1.Deployment
I am following this tutorial.
My objective was to create a Deployment made with a custom container instead of the hello container.
I made this my-custom-server-deployment.yaml:
apiVersion: v1
kind: ...
- 4,191
5
votes
2
answers
3k
views
gitlab + GKE + AutoDevops auto-deploy deploy fail. error: arguments in resource/name form must have a single resource and name. How to find a mistake?
I am new to gitlab CI. So I am trying to use https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml, to deploy simple test django app to the kubernetes ...
5
votes
1
answer
7k
views
What's the exact reason a pod-template-hash is added to the name of the replicaset when a deployment is created?
https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#creating-a-deployment mentions that a deployment creates a replicaSet but appends a pod-template-hash to the name of the ...
- 595
5
votes
2
answers
5k
views
How to make multiple pods communicate with each other on kubernetes
I am new to Kubernetes and I'm trying to deploy an application to kubernetes via microk8s. The application contains python flask backend, angular frontend, redis and mysql database. I deployed the ...
- 167
5
votes
2
answers
6k
views
update kubernetes deployment with jenkins
I'm using Kubernetes Continuous Deploy Plugin to deploy and upgrade a Deployment on my Kubernetes Cluster.
I'm using pipeline and this is the Jenkinsfile:
pipeline {
environment {
...
- 13k
5
votes
3
answers
4k
views
kubectl kubectl apply do nothing
I have existing deployments in k8s, I would like to update container, I updated docker image tag (new unique id) in deployment and run:
kubectl apply -f testdeploy.yml --namespace=myapp
Output is: ...
- 285
5
votes
1
answer
2k
views
Kubernetes kubectl set image deployment not able to --record history?
According to the user guide it should be possible to update a deployment's image with kubectl set/edit and still get a meaningful history.
However i'm getting some errors instead, and no meaningful ...
- 1,360