migrate-webservice-k8s-cluster
ActivePublic
Actions

Authored by Legoktm on Jan 7 2020, 9:53 PM.

Tags

None

Referenced Files

	F31503935: raw.txt
	Jan 7 2020, 9:53 PM

	F31503934: raw.txt
	Jan 7 2020, 9:53 PM

Subscribers

None

	#!/usr/bin/env python3
	# (C) 2020 Kunal Mehta <legoktm@member.fsf.org> under Apache-2.0

	import argparse
	import os
	import subprocess
	import sys
	import yaml


	MANIFEST = os.path.expanduser('~/service.manifest')

	def current_webservice():
	if not os.path.exists(MANIFEST):
	print('This tool does not currently have a webservice running')
	sys.exit(1)
	with open(MANIFEST) as f:
	data = yaml.safe_load(f)
	if data['backend'] != 'kubenetes':
	print('This tool is not running its webservice on kubernetes')
	sys.exit(1)
	if 'web' not in data:
	print('This tool does not currently have a webservice running')
	sys.exit(1)

	return data['web']


	def main():
	parser = argparse.ArgumentParser(description='Migrate your webservice to the new k8s cluster')
	parser.add_argument('--revert', action='store_bool', help='Revert back to the old k8s cluster')
	args = parser.parse_args()
	# TODO: check that it already hasn't migrated over to the new cluster...how?
	current = current_webservice()
	subprocess.check_call(['webservice', 'stop'])
	context = 'default' if args.revert else 'toolforge'
	subprocess.check_call(['/usr/bin/kubectl', 'config', 'use-context', context])
	subprocess.check_call(['webservice', current, '--backend=kubernetes', 'start'])
	subprocess.check_call(['dologmsg', 'Switched over to use new k8s cluster'])


	if __name__ == '__main__':
	main()

Legoktm edited the content of this paste. (Show Details)

/usr/bin/migrate-webservice-k8s-clusterActivePublicActions