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Currently cloud-init generates fallback network config on various
scenarios.
For example:
1. When no DS found
2. There is no 'network' info given in DS metadata.
3. If a DS gives a network config once and upon reboot if DS doesn't
give any network info, previously set network data will be
overridden.
A newly introduced key in cloud.cfg.tmpl can be used to control this
behavior on PhotonOS.
Also, if OS comes with a set of default network files(configs), like in
PhotonOS, cloud-init should not overwrite them by default.
This change also includes some nitpicking changes of reorganizing few
config variables.
Signed-off-by: Shreenidhi Shedi <sshedi@vmware.com>
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In CI run against pylint 2.9.3 and fix occurrences of:
- W0237 (arguments-renamed)
- W0402 (deprecated-module)
The W0402 deprecated-module was about module `imp`:
cloudinit/patcher.py:9: [W0402(deprecated-module), ]
Uses of a deprecated module 'imp'
The imp module is deprecated and replaced by importlib, which according
to the documentation has no replacement for acquire_lock() and
release_lock(), which are the only reason why `imp` is imported.
Nothing about the code using this lock that actually requires it.
Let's remove the locking code and the import altogether.
Dropping the locking makes patcher.patch() an empty wrapper around
_patch_logging(). Rename _patch_logging() to patch_logging() and
call it directly instead. Drop patch().
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Currently _bring_up_interfaces() is a no-op for any distro using
renderers. We need to be able to support bringing up a single
interfaces, a list of interfaces, and all interfaces. This should be
independent of the renderers, as the network config is often
generated independent of the mechanism used to apply it.
Additionally, I included a refactor to remove
"_supported_write_network_config". We had a confusing call chain of
apply_network_config->_write_network_config->_supported_write_network_config.
The last two have been combined.
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Minor fixes in networkd renderer & fixed corresponding tests
Removed datasource_list for Photon from cloud.cfg.tmpl & added a comment
in cloud.cfg.tmpl about not to use multiline array for datasource_list.
Signed-off-by: Shreenidhi Shedi <sshedi@vmware.com>
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Also added a new (currently experimental) systemd-networkd renderer,
and includes a small refactor to cc_resolv_conf.py to support the
resolved.conf used by systemd-resolved.
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