CircleCi pipeline fails due to namespace error

[piotr20a]

Expected Behavior

I am trying to run the pipeline config script in my CircleCi. The script runs fully, til the Kubernetes deployment part.

Output

The Kubernetes deployment script fails due to a namespace error in the merged files.

Context

The output of the error and part of the script that fails:

Error from server (Invalid): error when applying patch:
{"metadata":{"annotations":{"kubectl.kubernetes.io/last-applied-configuration":"{"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"smackmytest"},"name":"smackmytest","namespace":"default"},"spec":{"ports":[{"name":"http","port":8000,"targetPort":3000}],"selector":{"app":"smackmytest---"}}}\n"}},"spec":{"selector":{"app":"smackmytest---"}}}
to:
Resource: "/v1, Resource=services", GroupVersionKind: "/v1, Kind=Service"
Name: "smackmytest", Namespace: "default"
for: "connect4-client.yaml": error when patching "connect4-client.yaml": Service "smackmytest" is invalid: spec.selector: Invalid value: "smackmytest---": a valid label must be an empty string or consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyValue',  or 'myvalue',  or '12345', regex used for validation is '(([A-Za-z0-9][-A-Za-z0-9.])?[A-Za-z0-9])?')
Error from server (Invalid): error when applying patch:
{"metadata":{"annotations":{"kubectl.kubernetes.io/last-applied-configuration":"{"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"httpbin"},"name":"httpbin","namespace":"default"},"spec":{"ports":[{"name":"http","port":8000,"targetPort":80}],"selector":{"app":"httpbin---"}}}\n"}},"spec":{"selector":{"app":"httpbin---"}}}
to:
Resource: "/v1, Resource=services", GroupVersionKind: "/v1, Kind=Service"
Name: "httpbin", Namespace: "default"
for: "httpbin.yaml": error when patching "httpbin.yaml": Service "httpbin" is invalid: spec.selector: Invalid value: "httpbin---": a valid label must be an empty string or consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyValue',  or 'myvalue',  or '12345', regex used for validation is '(([A-Za-z0-9][-A-Za-z0-9.])?[A-Za-z0-9])?')

Exited with code exit status 1

[arnarthor]

Why is the name of the httpbin app set to httpbin---. The error states that the selector is invalid and the name of the app must start and end with a alphanumeric character, therefore httpbin--- is invalid.

Name: "httpbin", Namespace: "default"
for: "httpbin.yaml": error when patching "httpbin.yaml": Service "httpbin" is invalid: spec.selector: Invalid value: "httpbin---": a valid label must be an empty string or consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character (e.g. 'MyValue',  or 'myvalue',  or '12345', regex used for validation is '(([A-Za-z0-9][-A-Za-z0-9.])?[A-Za-z0-9])?')

Do your httpbin kubernetes templates have the name set to httpbin---, if so, you'll need to change them to httpbin

[Fanneyyy]

Correct, the issue is the "---" should be on the next line, could you make sure this is the script you're running:

#!/bin/bash

set -euo pipefail

DIRECTORY="$1"

yamls="$(ls -1 "${DIRECTORY}")"

for yaml in ${yamls}; do
    cat "${DIRECTORY}/${yaml}"
    echo $'\n---'
done

exit 0

[piotr20a]

That is indeed correct, did not realize that changes were pushed toward the main course branch about that fix. It works not, therefore the issue can be closed.

[siggibjarna]

If anyone has trouble because they added extra files to the k8s folder, then here is a fix. This way the script only merges *.yaml files and skips other files, such as the markdown file I added for information purposes.

#!/bin/bash

set -euo pipefail

DIRECTORY="$1"

yamls="$(ls -1 "${DIRECTORY}")"

for yaml in ${yamls}; do
    if [[ "${yaml}" == *.yaml ]]; then
        cat "${DIRECTORY}/${yaml}"
        echo $'\n---'
    fi
done

exit 0