yq replace value in manifest yaml

Question

I have a k8s manifest file for loadbalancer below and cannot for the life of me get the $ipaddress be replaced with value, I have got to to overwrite whole file or part of or even just leave blank. How can I replace only the $ipaddress like in below

Tried as example 2 below:

yq e '.spec|=select(.loadBalancerIP) .ports.port = "172.16.87.98"' manifest.yaml
yq e -i '(.spec|=select(.loadBalancerIP.$ipaddress) = "172.16.87.98"' manifest.yaml

  apiVersion: v1
    kind: Service
    metadata:
      name: my-lb-cluster
    spec:
      loadBalancerIP: $ipaddress
      ports:
        - name: ssl
          port: 8080
      selector:
        role: webserver
      sessionAffinity: None
      type: LoadBalancer

Not sure which tag you wanted, but doesn't seem to be related to [tag:jquery] — freedomn-m, Jan 14 '22 at 16:16

score 20 · Accepted Answer · edited Dec 13 '22 at 15:42

20

If the YAML is as simple as in your question, you can use:

yq e -i '.spec.loadBalancerIP = "172.16.87.98"' manifest.yaml

...to update manifest.yaml and set .loadBalancerIP inside .spec to "172.16.87.98".

edited Dec 13 '22 at 15:42

Nadjib Mami

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answered Jan 14 '22 at 16:22

0stone0

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1

ah dude, thanks I was over complicating this thinking i needed a select to find this – DeclanG Jan 14 '22 at 16:31

score 6 · Answer 2 · answered Oct 10 '22 at 17:22

6

I know it's late but this can help if you want to pass the value from a variable.

export LB_IP=1.1.1.1

yq e -i '.spec.loadBalancerIP= env(LB_IP)' manifest.yaml

answered Oct 10 '22 at 17:22

Franxi Hidro

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Late but useful! – anandhu Dec 25 '22 at 16:25

yq replace value in manifest yaml

2 Answers2