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In /etc/ssh/sshd_config, it is possible to define a custom
authorized_keys file that will contain the keys allowed to access the
machine via the AuthorizedKeysFile option. Cloudinit is able to add
user-specific keys to the existing ones, but we need to be careful on
which of the authorized_keys files listed to pick.
Chosing a file that is shared by all user will cause security
issues, because the owner of that key can then access also other users.
We therefore pick an authorized_keys file only if it satisfies the
following conditions:
1. it is not a "global" file, ie it must be defined in
AuthorizedKeysFile with %u, %h or be in /home/<user>. This avoids
security issues.
2. it must comply with ssh permission requirements, otherwise the ssh
agent won't use that file.
If it doesn't meet either of those conditions, write to
~/.ssh/authorized_keys
We also need to consider the case when the chosen authorized_keys file
does not exist. In this case, the existing behavior of cloud-init is
to create the new file. We therefore need to be sure that the file
complies with ssh permissions too, by setting:
- the actual file to permission 600, and owned by the user
- the directories in the path that do not exist must be root owned and
with permission 755.
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Azure Linux Agent (WaLinuxAgent) waits for the ovf-env.xml file
to be written by cloud-init when cloud-init provisions the VM. This
file is written whenever cloud-init reads its contents from the
provisioning ISO.
With this change, when there is no provisioning ISO,
DataSourceAzure will generate the ovf-env.xml file based on the
metadata obtained from Azure IMDS.
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Implement missing device_aliases feature
The device_aliases key has been documented as part of disk_setup for
years, however the feature was never implemented. This implements the
feature as documented allowing usercfg (rather than dsconfig) to create
a mapping of device names.
This is not to be confused with disk_aliases, a very similar map but
existing solely for use by datasources.
LP: #1867532
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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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Virtuozzo Linux is a distro based off of CentOS 8, similar to Alma Linux and Rocky Linux.
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Details:
1. Support guest set network config through guestinfo.ovfEnv using OVF
2. 'network-config' Property is optional
3. 'network-config' Property's value has to be base64 encoded
Added unittests and updated ovf-env.xml example
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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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With a few exceptions, Azure VM deployments receive provisioning
metadata through the provisioning iso presented as a cdrom device
(/dev/sr0). The existing code attempts to find this device by calling
blkid to find all devices that have either type iso9660 or udf. This
can be very expensive if the VM has a lot of disks. This commit will
attempt to mount the default iso location first and only tries to use
blkid to locate the iso location if the default mounting location fails
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Adds a udev script which will invoke a hotplug hook script on all net
add events. The script will write some udev arguments to a systemd FIFO
socket (to ensure we have only instance of cloud-init running at a
time), which is then read by a new service that calls a new 'cloud-init
devel hotplug-hook' command to handle the new event.
This hotplug-hook command will:
- Fetch the pickled datsource
- Verify that the hotplug event is supported/enabled
- Update the metadata for the datasource
- Ensure the hotplugged device exists within the datasource
- Apply the config change on the datasource metadata
- Bring up the new interface (or apply global network configuration)
- Save the updated metadata back to the pickle cache
Also scattered in some unrelated typing where helpful
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Python 3.6 added a new `policy` attribute to `MIMEMultipart`.
MIMEMultipart may be part of the cached object pickle of a datasource.
Upgrading from an old version of python to 3.6+ will cause the
datasource to be invalid after pickle load.
This commit uses the upgrade framework to attempt to access the mime
message and fail early (thus discarding the cache) if we cannot.
Commit 78e89b03 should fix this issue more generally.
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defined in AuthorizedKeysFile (#937)
This patch aims to fix LP1911680, by analyzing the files provided
in sshd_config and merge all keys into an user-specific file. Also
introduces additional tests to cover this specific case.
The file is picked by analyzing the path given in AuthorizedKeysFile.
If it points inside the current user folder (path is /home/user/*), it
means it is an user-specific file, so we can copy all user-keys there.
If it contains a %u or %h, it means that there will be a specific
authorized_keys file for each user, so we can copy all user-keys there.
If no path points to an user-specific file, for example when only
/etc/ssh/authorized_keys is given, default to ~/.ssh/authorized_keys.
Note that if there are more than a single user-specific file, the last
one will be picked.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Co-authored-by: James Falcon <therealfalcon@gmail.com>
LP: #1911680
RHBZ:1862967
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Add a new switch allow_raw_data to control raw data feature, update
the documentation. Fix bugs about max_wait.
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We read the MTU from the subnet entries. With the v1 format, the MTU can
be set at the root level of the interface entry in the `config` section.
Limitation, we won't set the MTU if the interface use DHCP. This
would require a bit of refactoring.
Also simplify/clarify how we pass the target variable in `cloudinit.net.bsd`.
See: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256309
Reported-by: Andrey Fesenko
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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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summary: Clear cache when a Python version change is detected
When a distribution gets updated it is possible that the Python version
changes. Python makes no guarantee that pickle is consistent across
versions as such we need to purge the cache and start over.
Co-authored-by: James Falcon <therealfalcon@gmail.com>
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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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v1 network config currently has no concept of interface-specific DNS,
which is required for certain renderers. To fix this, added an
optional 'interface' key on the v1 nameserver definition. If
specified, it makes the DNS settings specific to the interface.
Otherwise, it will be defined as global DNS as it always has.
Additionally, DNS for v2 wasn't being recognized correctly. For DNS
defined on a particular interface, these settings now also go into the
global DNS settings as they were intended.
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The name "DigitalOcean" doesn't have a space in it; it's a single
compound word written in Pascal case (upper camel case).
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- small document update for ReportEventStack explaining post_files
parameter
- small unit test for test_reporting demonstrating the close of an
event with optional post_files list
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LP: #1932048
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- Mostly based on FreeBSD, the main exception is that
`find_devs_with_on_freebsd` does not work.
- Since we cannot get the CDROM or the partition labels,
`find_devs_with_on_dragonflybsd()` has a more naive approach and
returns all the block devices.
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instance-data.json redacts sensitive data for non-root users. Since user
data is consumed as root, we should be consuming the non-redacted data
instead.
LP: #1931392
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Security scanners are often simple minded and complain on arbitrary
settings such as file permissions. For /var/log/* having world read is
one of these cases.
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dhclient output that contains brackets for pxe variables will break
the dhclient parsing regex line. This fix retains the current
functionality while fixing this particular issue.
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Ensure we've got a clean environment before we restart the network.
In some cases, the `sh /etc/netstart` is not enough to restart the
network. A previous default route remains in the route table and
as a result the network is broken.
Also `sh /netstart` does not kill `dhclient`.
The problen happens for instance with OVH OpenStack SBG3.
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Rocky Linux is a RHEL-compatible distribution so all changes that have
been made should be trivial.
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Presently, mirror keys cannot be associated with primary/security
mirrors. Unfortunately, this prevents use of Landscape-managed
package mirrors as the mirror key for the Landscape-hosted repository
cannot be provided.
This patch allows the same key-related fields usable on "sources"
entries to be used on the "primary" and "security" entries as well.
LP: #1925395
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In the case of a static network, we now set the MTU according to the
meta-data.
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httpretty now logs all requests by default which gets mixed up with our
logging tests. Also we were incorrectly setting a logging level to
'None', which now also causes issues with the new httpretty version.
See https://github.com/gabrielfalcao/HTTPretty/pull/419
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Control is currently limited to boot events, though this should
allow us to more easily incorporate HOTPLUG support. Disabling
'instance-first-boot' is not supported as we apply networking config
too early in boot to have processed userdata (along with the fact
that this would be a pretty big foot-gun).
The concept of update events on datasource has been split into
supported update events and default update events. Defaults will be
used if there is no user-defined update events, but user-defined
events won't be supplied if they aren't supported.
When applying the networking config, we now check to see if the event
is supported by the datasource as well as if it is enabled.
Configuration looks like:
updates:
network:
when: ['boot']
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In newer versions of python, when using urllib.parse, lines containing
newline or tab characters now get sanitized. This caused a unit test to
fail.
See https://bugs.python.org/issue43882
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UDEVADM_CMD is defined but not actually used in cc_disk_setup.py
so remove it.
Also modify the comment at top of read_parttbl function to remove the
reference to udevadm which implies it is used to scan the partition table.
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AlmaLinux OS is RHEL-compatible so all the changes needed are trivial.
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Bump the version in cloudinit/version.py to 21.2 and update ChangeLog.
LP: #1927254
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See https://bugs.launchpad.net/cloud-init/+bug/1910835
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This reverts commit 74fa008bfcd3263eb691cc0b3f7a055b17569f8b.
During pre-release testing, we discovered two issues with this commit.
Firstly, there's a typo in the udevadm command that causes a TypeError
for _all_ growpart executions. Secondly, the LVM resizing does not
appear to successfully resize everything up to the LV, though some
things do get resized.
We certainly want this change, so we'll be happy to review and land it
alongside an integration test which confirms that it is working as
expected.
LP: #1922742
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Move chef_license from TPL_PATH_KEYS to TPL_KEYS as the chef license
setting is not a path but must be added to the client config template.
Fixes file or folder not found exception raised from ensure_dirs.
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When network interfaces are hot-attached to the VM, attempting to get
network metadata might return 410 (or 500, 503 etc) because the info
is not yet available. In those cases, we retry getting the metadata
before giving up. The only case where we can move on to wait for more
nic attach events is if the call times out despite retries, which
means the interface is not likely a primary interface, and we should
try for more nic attach events.
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This change allows us to retrieve the username and hostname from
IMDS instead of having to rely on the mounted OVF.
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Due to hyper-v implementations, iso ejection is more efficient if performed
from within the guest. The code will attempt to perform a best-effort ejection.
Failure during ejection will not prevent reporting ready from happening. If iso
ejection is successful, later iso ejection from the platform will be a no-op.
In the event the iso ejection from the guest fails, iso ejection will still happen at
the platform level.
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The blkdev command is fragile re-reading partition tables if a
partition is mounted. This change instead uses the partprobe if
it is available.
LP: #1920939
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In #777, we added 'vendordata2' and 'vendordata2_raw' attributes to
the DataSource class, but didn't use the upgrade framework to deal
with an unpickle after upgrade. This commit adds the necessary
upgrade code.
Additionally, added a smaller-scope upgrade test to our integration
tests that will be run on every CI run so we catch these issues
immediately in the future.
LP: #1922739
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the above option allows the user to control the behavior of a distro
hostname selection if both short hostname and FQDN are supplied.
If `prefer_fqdn_over_hostname` is true the FQDN will be selected as
hostname; if false the hostname will be selected
LP: #1921004
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git-grep showed a few more locations where we refer to a "user-scripts"
config module which is really cc_scripts_user module. Replace these
references with slightly different language so as not to confuse
future me when looking for "user-scripts" vs. "scripts-user"
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Invoking walinuxagent from within cloud-init is no longer
supported/necessary
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This PR adds in support so that cloud-init can run on instances
deployed on Vultr cloud. This was originally brought up in #628.
Co-authored-by: Eric Benner <ebenner@vultr.com>
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