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authorzsdc <taras@vyos.io>2021-12-30 00:41:31 +0200
committerKim Hagen <kim@sentrium.io>2021-12-30 10:02:26 -0600
commit1a9c1479044040c64ca6be91835d8cea7004ddff (patch)
tree9fe7b6f45269808f81d42aa3ed9a26be2cb4e0b7 /src/helpers
parentb7b5eecd30c740e49d9a6943a1f0e8099be732eb (diff)
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dhclient: T4121: Fixed resolv.conf generation at early boot stage
In case if a CLI configuration is not available, dhclient cannot add nameservers to a `resolv.conf` file, because `vyos-hostsd` requires that an interface be listed in the `set system name-server` option. This commit introduces two changes: * `vyos-hostsd` service will not be started before Cloud-Init fetch all remote data. This is required because all meta-data should be available for Cloud-Init before any of VyOS-related services start since it is used for configuration generation. * the `vyos-hostsd-client` in the `dhclient-script` will be used only if the `vyos-hostsd` is running. In other words - if VyOS services already started, dhclient changes `resolv.conf` using `vyos-hostsd`; in other cases - does this directly. These changes should protect us from problems with DHCP during system boot if DHCP is required by third-party utils.
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