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Helm: discovering Helm chart releases installed into Kubernetes cluster


Categories: DevOps, Kubernetes

If you are administering a Kubernetes cluster that you have inherited or perhaps not visited in a while, then you may need to reacquaint yourself with: which Helm charts are installed into what namespaces, if there are chart updates available, and then what values were used for chart installation. Below are commands that can assist … Helm: discovering Helm chart releases installed into Kubernetes cluster

Bash: Difference between two arrays


Categories: Linux, Scripting

Whether looking at differences in filenames, installed packages, etc. it can be useful to calculate the difference between two Bash arrays. SiegeX on stackoverflow.com offered the following function using awk, and I have built a full example available on github. function arraydiff() { awk ‘BEGIN{RS=ORS=” “} {NR==FNR?a[$0]++:a[$0]–} END{for(k in a)if(a[k])print k}’ <(echo -n “${!1}”) <(echo … Bash: Difference between two arrays