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66 lines
2.2 KiB
Bash
66 lines
2.2 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: 2023-02-02 15:23:26 +0000 (Thu, 02 Feb 2023)
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#
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# https://github.com/HariSekhon/DevOps-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,SC1091
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Finds live deprecated objects in the current Kubernetes cluster
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Dumps all Kubernetes objects from the current kubectl cluster context to a directory in /tmp and then runs Pluto against it to detect deprecated API objects affecting your Kubernetes cluster upgrades
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Newer versions of Pluto can 'pluto detect-all-in-cluster', but on real-world clusters I've found that this finds different deprecated API objects compared to detect-files on dumped objects, so this script has been updated to do both for comparison
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See here for more details:
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https://github.com/FairwindsOps/pluto/issues/461
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Requires 'kubectl' and a recent 'pluto' binary to be in the \$PATH (newer Pluto is required for the second pass of detect-all-in-cluster), as well as the kubectl context configured and set as current context
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args=""
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help_usage "$@"
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num_args 0 "$@"
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export KUBECTL_GET_ALL_SEPARATOR='---'
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dir="/tmp/${0##*/}.$$"
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dumpfile="$dir/all.yaml"
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mkdir -pv "$dir"
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timestamp "Dumping all live Kubernetes objects to $dumpfile (this will take a few minutes)"
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"$srcdir/kubectl_get_all.sh" --all-namespaces -o yaml > "$dumpfile"
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echo >&2
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timestamp "Scanning dumped objects with Pluto"
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echo >&2
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# returns exit code 3 when deprecated objects are found so doesn't run the next detect-all-in-cluster without ignoring the exit code
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pluto detect-files -d "$dir" || :
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echo >&2
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timestamp "Scanning live cluster as real-world testing shows this finds different results"
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echo >&2
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pluto detect-all-in-cluster
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