Get YAML for deployed Kubernetes services?

How do I get the YAML for the Deployment, Service and Pod created by Kubernetes by filling in the form?

kubectl get deployment,service,pod yourapp -o yaml --export

Answering @Sinaesthetic question:

any idea how to do it for the full cluster (all deployments)?

kubectl get deploy --all-namespaces -o yaml --export

The problem with this method is that export doesn't include the namespace. So if you want to export many resources at the same time, I recommend doing it per namespace:

kubectl get deploy,sts,svc,configmap,secret -n default -o yaml --export > default.yaml

Unfortunately kubernetes still doesn't support a true get all command, so you need to list manually the type of resources you want to export. You can get a list of resource types with

kubectl api-resources

The same issue is discussed at kubernetes GitHub issues page and the user "alahijani" made a bash script that exports all yaml and writes them to single files and folders.

Since this question ranks well on Google and since I found that solution very good, I represent it here.

Bash script exporting yaml to sub-folders:

for n in $(kubectl get -o=name pvc,configmap,serviceaccount,secret,ingress,service,deployment,statefulset,hpa,job,cronjob)
do
    mkdir -p $(dirname $n)
    kubectl get -o=yaml --export $n > $n.yaml
done

Another user "acondrat" made a script that do not use directories, which makes it easy to make a kubectl apply -f later.

Bash script exporting yaml to current folder:

for n in $(kubectl get -o=name pvc,configmap,ingress,service,secret,deployment,statefulset,hpa,job,cronjob | grep -v 'secret/default-token')
do
    kubectl get -o=yaml --export $n > $(dirname $n)_$(basename $n).yaml
done

The last script does not include service account.

Syntax for downloading yaml's from kubernetes

kubectl get [resource type] -n [namespace] [resource Name] -o yaml > [New file name]

Create yaml file from running pod:

1. kubectl get po -n nginx nginx-deployment-755cfc7dcf-5s7j8 -o yaml > podDetail.yaml

Create replicaset yaml file from running pod:

2. kubectl get rs -n nginx -o yaml > latestReplicaSet.yaml

Create deployement yaml file from running pod:

3. kubectl get deploy -n nginx -o yaml > latestDeployement.yaml

Now that --export is deprecated, to get the output from your resources in the 'original' format (just cleaned up, without any information about the current object state (unnecessary metadata in this circumstance)) you can do the following using yq v4.x:

kubectl get <resource> -n <namespace> <resource-name> -o yaml \
  | yq eval 'del(.metadata.resourceVersion, .metadata.uid, .metadata.annotations, .metadata.creationTimestamp, .metadata.selfLink, .metadata.managedFields)' -

Also its possible to use the view-last-applied command e.g.

kubectl apply view-last-applied services --all > services.yaml

which will return all the manifests applied to create services. Also you can specify a certain k8 resource by services/resource-name label.

Use this command to get yaml format of your service

kubectl get service servicename -n <namespace> -o yaml

You can put it in some file also

kubectl get service servicename -n <namespace> -o yaml > service.yaml

The following code will extract all your K8s definitions at once and place them on individual folders below the current folder.

for OBJ in $(kubectl api-resources --verbs=list --namespaced -o name)
do
   for DEF in $(kubectl get --show-kind --ignore-not-found $OBJ -o name)
   do
      mkdir -p $(dirname $DEF)
      kubectl get $DEF -o yaml \
      | yq eval 'del(.metadata.resourceVersion, .metadata.uid, .metadata.annotations, .metadata.creationTimestamp, .metadata.selfLink, .metadata.managedFields)' - > $DEF.yaml 
   done
done

If you need to get 'clean' export, removing the annotations added by Kubernetes, there's an opensource project that does that by piping the output of kubectl get - https://github.com/itaysk/kubectl-neat.

It removes the timestamp metadata, etc.

kubectl get pod mypod -o yaml | kubectl neat

kubectl get pod mypod -oyaml | kubectl neat -o json

• Like mentioned above "--export" is one option to get the manifest corresponding to the kubeernetes objects
• But "--export" is considered to be buggy and there is a proposal to deprecate it
• Currently the better option is to do "-o yaml" or "-o json" and remove the unnecessary fields
• The main difference is "--export" is expected to remove the cluster specific settings (e.g. cluster service IP of a k8s service). But it is found to be inconsistent in this regard

1. You can store output of deployed kubernetes service by using below command -

   kubectl get svc -n -o yaml > svc-output.yaml

For deployments -

kubectl get deploy <deployment-name> -n <your-namespace> -o yaml > deploy-output.yaml

For Pod -

kubectl get pod <pod-name> -n <your-namespace> -o yaml > pod-output.yaml

2. You can get your secret details using below command -

   kubectl get secret -n -o yaml In order to use update your deployment file by using below command -

   kubectl edit deploy -n Under your pod template add below -

• this will go under pod containers section to mount secret volume to container

    volumeMounts:
    - name: foo
      mountPath: "/etc/foo"
      readOnly: true
  

• this will go inside your pod template section in deployment

  volumes:
  - name: foo
    secret:
      secretName: mysecret
  

We can get the contents associated with any kind from a Kubernetes cluster through the command line if you have the read access.

kubectl get <kind> <kindname> -n <namespace> -o <yaml or json>

For example, if you want to export a deployment from a namespace follow the below command -

kubectl get deploy mydeploy -n mynamespace -o yaml > mydeploy.yaml

kubectl get deploy mydeploy -n mynamespace -o json > mydeploy.json

To get all yaml file deployments backup (not a specific deployment):

kubectl get deployments -n <namespace> -o yaml > deployments.yaml

for getting all yaml file services backup (not a specific deployment):

kubectl get services -n <namespace> -o yaml > services.yaml

enjoy it.

kubectl -n <namespace> get <resource type> <resource Name> -o yaml 

With the command above, any resource defined in Kubernetes can be exported in YAML format.

If you need to view and edit the file use:

kubectl edit service servicename

1. You can get the yaml files of the resources using this command

   kubectl -n <namespace> get <resource type> <resource Name> -o yaml

2. To get the secret into your pod,

use something like this

env
- valueFrom
    secretKeyRef:
      name: secret_name
      key: key_name

or

envFrom
- secretRef:
    name: secret_name

 

Is only minor difference from @Janos Lenart's answer!

kubectl get deploy deploymentname -o yaml > outputFile.yaml will do

We can get yaml for deployed resources using below command.

kubectl get <resource name> -o yaml

                OR
kubectl get <resource name> <name of pod> -o yaml

example:-

  kubectl get deploy Nginx -o yaml

above commands will give you yaml output.

if you want to store the output into any file you can use below command.

kubectl get pod nginx -o yaml > Nginx-pod.yaml

above command will redirect you output to Nginx-pod.yaml in your courrent directory.

All services

kubectl get service --all-namespaces -o yaml  > all-service.yaml

All deployments

kubectl get deploy --all-namespaces -o yaml  > all-deployment.yaml

I know it is too old to answer, but hopefully, someone will find it helpful.

We can try below command to fetch a kind export from all namespace -

kubectl get <kind> --all-namespaces --export -o yaml

You can try use kube-dump bash script

With this utility, you can save Kubernetes cluster resources as a pure yaml manifest without unnecessary metadata.

• GitHub repository
• Review of the utility in blog page