Kubernetes cheatsheet¶

How to install a custom Codacy version¶

Install¶

sudo git clone git://github.com/codacy/chart -b <YOUR-BRANCH>
helm dep build ./chart/codacy
helm upgrade --install codacy ./chart/codacy/ --namespace codacy --atomic --timeout=300 --values ./<YOUR-VALUES-FILE>

Upgrade¶

(cd chart; sudo git fetch --all --prune --tags; sudo git reset --hard origin/<YOUR-BRANCH>;)
helm dep build ./chart/codacy
helm upgrade --install codacy ./chart/codacy/ --namespace codacy --atomic --timeout=300 --values ./<YOUR-VALUES-FILE>

Edit configmap¶

kubectl get configmaps

and

kubectl edit configmap <configmap-name>

Restart deployment of daemonset¶

daemonsets¶

kubectl get daemonsets

and

kubectl rollout restart daemonset/<daemonset-name>

deployment¶

kubectl get deployment

and

kubectl rollout restart deployment/<deployment-name>

and

kubectl rollout status deployment/<deployment-name> -w

Read logs¶

daemonset with multiple containers¶

kubectl logs daemonset/<daemonset-name> <container-name> -f

service¶

kubectl get svc

and

kubectl logs -l $(kubectl get svc/<service-name> -o=json | jq ".spec.selector" | jq -r 'to_entries|map("\(.key)=\(.value|tostring)")|.[]' | sed -e 'H;${x;s/\n/,/g;s/^,//;p;};d') -f

Open shell inside container¶

kubectl exec -it daemonset/<daemonset-name> -c <container-name> sh

or

kubectl exec -it deployment/<deployment-name> sh

MicroK8s¶

Session Manager SSH¶

When using AWS Session Manager, to connect to the instance where you installed microk8s, since the CLI is very limited you will benefit from using these aliases:

alias kubectl='sudo microk8s.kubectl -n <namespace-name>'
alias helm='sudo helm'

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Last modified October 15, 2020