You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.1 KiB
Bash
87 lines
2.1 KiB
Bash
#!/usr/bin/env bash
|
|
# vim:ts=4:sts=4:sw=4:et
|
|
#
|
|
# Author: Hari Sekhon
|
|
# Date: 2020-11-18 11:09:30 +0000 (Wed, 18 Nov 2020)
|
|
#
|
|
# https://github.com/HariSekhon/DevOps-Bash-tools
|
|
#
|
|
# License: see accompanying Hari Sekhon LICENSE file
|
|
#
|
|
# 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
|
|
#
|
|
# https://www.linkedin.com/in/HariSekhon
|
|
#
|
|
|
|
set -euo pipefail
|
|
[ -n "${DEBUG:-}" ] && set -x
|
|
srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
|
|
|
# shellcheck disable=SC1090,SC1091
|
|
. "$srcdir/lib/utils.sh"
|
|
|
|
# shellcheck disable=SC1090
|
|
# not using anything from here directly
|
|
#. "$srcdir/lib/kubernetes.sh"
|
|
|
|
# shellcheck disable=SC2034,SC2154
|
|
usage_description="
|
|
Runs kubectl diff and apply, prompting to accept any changes before applying
|
|
|
|
Must be given kubectl args to provide the input yaml(s), eg:
|
|
|
|
${0##*/} -f file.yaml
|
|
|
|
kustomize build | ${0##*/} -f -
|
|
|
|
Highly recommended to specify --context to avoid race conditions in global kube config which could apply to the wrong cluster. See kubectl.sh for more details
|
|
|
|
${0##*/} -f file.yaml --context=gke_...
|
|
|
|
See Also:
|
|
|
|
kustomize_diff_apply.sh - runs kustomize build, precreates namespaces, and then runs this diff and apply
|
|
|
|
kubectl_create_namespaces.sh - creates any namespaces in the yaml inputs to allow an initial diff to succeed
|
|
"
|
|
|
|
# used by usage() in lib/utils.sh
|
|
# shellcheck disable=SC2034
|
|
usage_args="<kubectl_options>"
|
|
|
|
help_usage "$@"
|
|
|
|
stdin=0
|
|
yaml=""
|
|
|
|
# there is no space before -f in $* if given as first argument
|
|
#if [[ "$*" =~ [[:space:]]-f[[:space:]]*- ]]; then
|
|
if [[ "$*" =~ -f[[:space:]]*- ]]; then
|
|
stdin=1
|
|
fi
|
|
|
|
if [ $stdin -eq 1 ]; then
|
|
yaml="$(cat)"
|
|
fi
|
|
|
|
echo "Diff from live running cluster:"
|
|
echo
|
|
|
|
if kubectl diff "$@" <<< "$yaml"; then
|
|
echo "No changes to deploy"
|
|
exit 0
|
|
fi
|
|
|
|
echo
|
|
read -r -p "Deploy the above changes? (y/N) " answer < /dev/tty # < $(tty)
|
|
shopt -s nocasematch
|
|
if [[ ! "$answer" =~ ^y|yes$ ]]; then
|
|
echo "Aborting..."
|
|
exit 1
|
|
fi
|
|
shopt -u nocasematch
|
|
echo
|
|
echo
|
|
|
|
kubectl apply "$@" <<< "$yaml"
|