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klg
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Viewing logs of Kubernetes pods using lnav
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klg
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# klg Viewing logs of Kubernetes pods using [lnav](https://lnav.org/). This is written in bash script. ### Why this? - I am sick of copying long auto-generated pod name before pasting into `kubectl logs` command. K9s can help here. - My eyes hurt when looking at the wall of log text in the terminal - I want to filter/search the logs in a professional log viewer - I want to play with shell script # DEMO  # DEPENDENCIES This tool depends on `fzf`, `lnav` and `kubectl`. - Please make sure that you installed [lnav](https://lnav.org/) - Your `kubectl` must work - Please install [fzf](https://github.com/junegunn/fzf) for fuzzy search # HOW TO USE ## View pod logs with `klg` View logs of your pod/container using `lnav` Add this to your `.bashrc` or `.zshrc` ``` function klg () { <Path-to-your-cloned-repo>/klg/klg.sh $@ } ``` ## Run shell command with `ksh` Start `/bin/sh` inside your pod and let you run any shell command as you want. Add this to your `.bashrc` or `.zshrc` ``` function ksh () { <Path-to-your-cloned-repo>/klg/ksh.sh $@ } ``` ## Execute a shell command inside your pod with `ke` Execute a shell command inside a k8s pod Add this to your `.bashrc` or `.zshrc` ``` function ke () { <Path-to-your-cloned-repo>/klg/ke.sh $@ } ``` ## Usage ``` klg [options] ksh [options] ke [options] ``` Available option: - `-n`: Keyword to fuzzy search for k8s namespace. Ignored when `-N` is specified. - `-p`: Keyword to fuzzy search for k8s pod. Ignored when `-P` is specified. - `-c`: Keyword to fuzzy search for container. Ignored when `-C` is specified. - `-N`: Exact namespace (no searching) - `-P`: Exact pod name (no searching) - `-C`: Exact container name (no searching) If namespace options are not provided, `$K8S_DEFAULT_NS` will be used, by default, it is `default`. If pod options are not provided, the user will be asked to select pod on a fuzzy search popup. If container options are not provided for multi-container pods, the user will be asked to select container on a fuzzy search popup. Example: ``` klg klg -n my-nsp klg -n my-namespace -p my-pod -c my-container K8S_DEFAULT_NS=my-default-ns klg -p mypd -c myctn ksh -p my-pod ksh -n my-nsp -p my-pod -c my-container ke -n my-nsp -p my-pod -- my-command the arg list ``` # GOALS Finish following features: - [x] Fuzzy search for k8s namespace/pod/container - [x] Viewing logs in lnav - [x] Using default namespace `default` or `$K8S_DEFAULT_NS` - [x] Handle error cases and return error code (e.g. pod not found, namespace not found) - [x] Auto-select the only container in pod # ALTERNATIVE FOR FISH SHELL If you are a *fisher* (as I am), please refer to [this file](https://github.com/haphamdev/dot-files/blob/master/fish/functions/klg.fish).
