Appending strings to output of jsonpath expression when listing pod labels using kubectl - kubectl

Question

I have a json path command to get all the labels of my pods.
kubectl get pods -o jsonpath="{.items[*].metadata.labels}"
This will output:
{
"app": "api-dogs-v1",
"release": "0.0.119"
} {
"app": "api-cats-v1",
"release": "0.0.16"
}
I want to do some simple manipulation of the command so that it outputs valid json and surround inside a json object.
I'm trying the below:
kubectl get pods -o jsonpath='{"{"}{{range .items[*]}{.metadata.labels}{"}"}{end}'
But this gives me back:
unrecognized character in action: U+007B '\'
Can anyone help me with this? Desired output below:
{
{
"app": "api-dogs-v1",
"release": "0.0.119"
} {
"app": "api-cats-v1",
"release": "0.0.16"
}
}
thanks!
...........................................
Update
kubectl get pods -o jsonpath='"richard"{range .items[*]}{.metadata.labels}{end}"}"'
Almost gets me there but I get an error when i change to add curly braces at the start of the json path expression (instead of my name) i believe it thinks i'm starting the function...
kubectl get pods -o jsonpath='"{"{range .items[*]}{.metadata.labels}{end}"}"'
error: error parsing jsonpath {{range .items[*]}{.metadata.labels}{end}}, unrecognized character in action: U+007B '{'

Answer 1

i have remove extra { infront of {range .items[*]} and moved {"}"} after {end} as following :
kubectl get pods -o jsonpath='{"{"}{range .items[*]}{.metadata.labels}{end}{"}"}'
Output(your desired output format):
{{"app":"test-multi-pv","pod-template-hash":"55665bc94c"}{"app":"nginx","controller-revision-hash":"web1-774fbdcb49","statefulset.kubernetes.io/pod-name":"web1-0"}{"app":"nginx","controller-revision-hash":"web2-6b59d76fc6","statefulset.kubernetes.io/pod-name":"web2-0"}{"app":"nginx","controller-revision-hash":"web3-7c65fbbcdc","statefulset.kubernetes.io/pod-name":"web3-0"}}

Answer 2

I found that you have opened one extra open brace in your command. Kindly recheck the command and try once.
I have reproduced the use case and successfully got the expected output.while running the following jsonpath command, I have got all the labels of my pods.
kubectl get pods -o jsonpath="{.items[*].metadata.labels}"
Output:
{
"app":"hello-server",
"Pod-template-hash":"5bd6b6875f"
}
I have removed the curly braces of the jsonpath expression “{“ before the {range .items[*]} and added a newline expression before the {end}
So, the final range function for the json object that surrounds the inside json object is
kubectl get pods -o jsonpath='{"{"}{range .items[*]}{.metadata.labels}{"}"}{"\n"}{end}'
Expected Output:
{
{
"app":"hello-server",
"Pod-template-hash":"5bd6b6875f"
}
}