manual_cache_clean: When manually cleaning touch a file in instance dir.
When manual_cache_clean is enabled, write a file to
/var/lib/cloud/instance/manual-clean. That file can then be read by
ds-identify or another tool to indicate that manual cleaning is in place.
Add tools/ds-identify to identify datasources available.
ds-identify is run here from the generator. If ds-identify does
not see any datasources, it can completely disable cloud-init.
The big value in this is that if there is no datasource, no python
will ever be loaded, and cloud-init will be disabled.o
The default policy being added here is:
search,found=all,maybe=all,notfound=disabled
That means:
- enable (in 'datasource_list') all sources that are found.
- if none are found, enable all 'maybe'.
- if no maybe are found, then disable cloud-init.
On platforms without DMI (everything except for aarch64 and x86),
the default 'notfound' setting is 'enabled'. This is because many of
the detection mechanisms rely on dmi data, which is present only on
x86 and aarch64.
The iface:alias syntax for eni rendering is brittle with ipv6.
Replace it with using multiple iface stanzas with the same iface
name which is supported. Side-effect is that one can no longer
do 'ifup $iface:$alias' but requires instead use of ip address
{add|delete} instead.
tests: remove executable bit on test_net, so it runs, and fix it.
The test_user_data_normalize and test_net files had gotten
the executable bit set, and thus are skipped by nose by default.
We could set run with the --exe flag, but they should not have
gotten this way.
Other changes here:
* replace TempDirTestCase with CiTestCase, which has some nice
tmp_dir() and tmp_path() functions. Going forward the intent
is to have CiTestCase be the base test case for tests.
* test_net: switch to CiTestCase and fix usage that was
silently broken, because of exe bit.
* populate_dir: return the list of files that it writes rather
than having no return value.
* CiTestCase:
* support tmp_path("foo") that returns a full path to 'foo'
under a tmpdir.
* add tmp_dir() to get a temp dir and clean up.
Add 3 ecdsa-sha2-nistp* ssh key types now that they are standardized
cloud-init adds ssh_authorized_keys to the default user and to
root but for root it disables the keys with a prefix command.
However, if the public_key key is of type ecdsa-sha2-nistp521,
it is not parsed correctly, and the prefix command is not prepended.