mirror of
https://github.com/TECHNOFAB11/kubenix.git
synced 2025-12-12 16:10:05 +01:00
99 lines
2.3 KiB
Nix
99 lines
2.3 KiB
Nix
{
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jq,
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kubectl,
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kubernetes-helm,
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nix,
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writeShellScriptBin,
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}:
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writeShellScriptBin "kubenix" ''
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set -Eeuo pipefail
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function _help() {
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echo "
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kubenix - Kubernetes management with Nix
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commands:
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apply - create resources in target cluster
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diff - show a diff between configured and live resources
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render - print resource manifests to stdout
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options:
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-h --help - show this menu
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-v --verbose - increase output details
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"
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}
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SYSTEM=$(nix show-config --json | jq -r '.system.value')
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function _helm() {
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${nix}/bin/nix eval ".#kubenix.$SYSTEM.config.kubernetes.helm" --json | jq -c '.releases[] | del(.objects)' | while read -r release; do
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values=$(mktemp)
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echo "$release" | jq -r '.values' > $values
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${kubernetes-helm}/bin/helm $@ \
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-n $(echo "$release" | jq -r '.namespace // "default"') \
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$(echo "$release" | jq -r '.name') \
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$(echo "$release" | jq -r '.chart') \
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-f $values
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done
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}
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function _kubectl() {
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MANIFESTS=$(mktemp)
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# TODO: find a better filter, not just not-helm, not-crd
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resources=$(${nix}/bin/nix build ".#kubenix.$SYSTEM.config.kubernetes.result" --json | jq -r '.[0].outputs.out')
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cat $resources | jq '.items[]
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| select(.metadata.labels."app.kubernetes.io/managed-by" != "Helm")
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| select(.kind != "CustomResourceDefinition")' > $MANIFESTS
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[ -s "$MANIFESTS" ] || return 0
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case $1 in
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render)
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cat $MANIFESTS;;
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*)
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${kubectl}/bin/kubectl $@ -f $MANIFESTS || true;;
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esac
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}
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# if no args given, add empty string
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[ $# -eq 0 ] && set -- ""
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# use kubeconfig, if given
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kubeconfig=$(nix eval ".#kubenix.$SYSTEM.config.kubernetes.kubeconfig" --raw)
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[ -n "$kubeconfig" ] && export KUBECONFIG=$kubeconfig
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# parse arguments
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while test $# -gt 0; do
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case "$1" in
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apply)
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_kubectl apply
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_helm upgrade --install --create-namespace
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shift;;
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diff)
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_kubectl diff
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_helm diff upgrade --allow-unreleased
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shift;;
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render)
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_kubectl render
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_helm template
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shift;;
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-h|--help|"")
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_help
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exit 0;;
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-v|--verbose)
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set -x
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shift;;
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*)
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_help
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exit 1;;
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esac
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done
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''
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