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55 lines
1.4 KiB
Bash
55 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-11-12 15:34:19 +0000 (Thu, 12 Nov 2020)
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#
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# https://github.com/HariSekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Reads kubernetes yaml from stdin, extracts all namespace names and creates the namespaces with kubectl
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This is needed because on blank installs doing something like
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kustomize build | kubectl diff -f -
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fails with an error like:
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Error from server (NotFound): namespaces \"blah\" not found
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Instead you can first pipe it through this script to precreate the namespaces so the kubectl diff succeeds
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<file.yaml> <file2.yaml>]"
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help_usage "$@"
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no_more_opts "$@"
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while read -r namespace; do
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if kubectl get ns "$namespace" &>/dev/null; then
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echo "namespace '$namespace' aleady exists"
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else
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kubectl create namespace "$namespace"
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fi
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echo
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done < <(awk '/namespace:/{print $2}' "$@" | sort -u)
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