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path: root/cloudinit/dhclient_hook.py
AgeCommit message (Collapse)Author
2016-08-22Minor cleanups to atomic_helper and add unit tests.Scott Moser
Change atomic_helper.write_file to have same same signature as write_file. Add some simple unit tests for atomic_helper.
2016-08-15Get Azure endpoint server from DHCP clientBrent Baude
It is more efficient and cross-distribution safe to use the hooks function from dhclient to obtain the Azure endpoint server (DHCP option 245). This is done by providing shell scritps that are called by the hooks infrastructure of both dhclient and NetworkManager. The hooks then invoke 'cloud-init dhclient-hook' that maintains json data with the dhclient options in /run/cloud-init/dhclient.hooks/<interface>.json . The azure helper then pulls the value from /run/cloud-init/dhclient.hooks/<interface>.json file(s). If that file does not exist or the value is not present, it will then fall back to the original method of scraping the dhcp client lease file.