I would love to list deployments having mongodb environment value along with their phase status. Is there anyway to do so?
With this command, I get the deployments name which carries a specific environment value
kubectl get deploy -o=custom-columns="NAME:.metadata.name,SEC:.spec.template.spec.containers[*].env[*].value" | grep mongodb | cut -f 1 -d ' 'Output:
app1
app2
app3
app4Output I want to get:
NAME READY UP-TO-DATE AVAILABLE AGE
app1 1/1 1 1 125d
app2 1/1 1 1 248d
app3 1/1 1 1 248d
app4 1/1 1 1 248dOr it can be pods as well. I'd appreciate your help.
Thank you!
I had a go at a solution using kubectl but was unsuccessful.
I suspect (!?) you'll need to use additional tools to parse|process the results to get what you want. Perhaps using jq?
For Deployments, you can filter the results based on environment variable names using, e.g.:
FILTER="{.items[*].spec.template.spec.containers[*].env[?(@.name==\"mongodb\")]}"
kubectl get deployments \
--namespace=${NAMESPACE} \
--output=jsonpath="${FILTER}"But this only returns the filtered path (i.e. items[*].spec.template.spec.containers[*].env).
With JSONPath, you ought (!) be able to apply the filter to the item but I this isn't supported (by kubectl's implementation) i.e.:
FILTER="{.items[?(@.spec.template.spec.containers[?(@.env[?(@.name==\"mongodb\")])])]}"With jq, I think you'll be able to select the env.name, return the item's status and get the raw status values that you need. Something like:
FILTER='
.items[]
|select(.spec.template.spec.containers[].env[].name == "mongodb")
|{"name":.metadata.name, "ready":.status.readyReplicas}
'
kubectl get deployments \
--output=json \
| jq -r "${FILTER}"