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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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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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Ensure that the Azure helper's http handler sleeps a fixed duration
between retry failure attempts. The http handler will sleep a fixed
duration between failed attempts regardless of whether the attempt
failed due to (1) request timing out or (2) instant failure (no
timeout).
Due to certain platform issues, the http request to the Azure endpoint
may instantly fail without reaching the http timeout duration. Without
sleeping a fixed duration in between retry attempts, the http handler
will loop through the max retry attempts quickly. This causes the
communication between cloud-init and the Azure platform to be less
resilient due to the short total duration if there is no sleep in
between retries.
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#342 (70dbccbb) introduced the ability to determine route-metrics based on
the `device-number` provided by the EC2 IMDS. Not all datasources that
subclass EC2 will have this attribute, so allow the old behavior if
`device-number` is not present.
LP: #1917875
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`get_interfaces` is used to in two ways, broadly: firstly, to determine
the available interfaces when converting cloud network configuration
formats to cloud-init's network configuration formats; and, secondly, to
ensure that any interfaces which are specified in network configuration
are (a) available, and (b) named correctly. The first of these is
unaffected by this commit, as no clouds support Open vSwitch
configuration in their network configuration formats.
For the second, we check that MAC addresses of physical devices are
unique. In some OVS configurations, there are OVS-created devices which
have duplicate MAC addresses, either with each other or with physical
devices. As these interfaces are created by OVS, we can be confident
that (a) they will be available when appropriate, and (b) that OVS will
name them correctly. As such, this commit excludes any OVS-internal
interfaces from the set of interfaces returned by `get_interfaces`.
LP: #1912844
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Add flexibility to IMDS api-version by having both a desired IMDS
api-version and a minimum api-version. The desired api-version will
be used first, and if that fails it will fall back to the minimum
api-version.
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Changes:
* Only merge in default Azure cloud ephemeral disk configs
during DataSourceAzure._get_data() if the ephemeral disk
exists.
* DataSourceAzure.address_ephemeral_resize() (which is
invoked in DataSourceAzure.activate() should only set up
the ephemeral disk if the disk exists.
Azure VMs may or may not come with ephemeral resource disks
depending on the VM SKU. For VM SKUs that come with
ephemeral resource disks, the Azure platform guarantees that
the ephemeral resource disk is attached to the VM before
the VM is booted. For VM SKUs that do not come with
ephemeral resource disks, cloud-init currently attempts
to wait and set up a non-existent ephemeral resource
disk, which wastes boot time. It also causes disk setup
modules to fail (due to non-existent references to the
ephemeral resource disk).
udevadm settle is invoked by cloud-init very early in boot.
udevadm settle is invoked very early, before
DataSourceAzure's _get_data() and activate() methods.
Within DataSourceAzure's _get_data() and activate() methods,
the ephemeral resource disk path should exist if the
VM SKU comes with an ephemeral resource disk.
The ephemeral resource disk path should not exist if the
VM SKU does not come with an ephemeral resource disk.
LP: #1901011
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Kernel's newer than 4.15 present /sys/dmi/id/product_uuid as a
lowercase value. Previously UUID was uppercase.
Azure datasource reads the product_uuid directly as their platform's
instance-id. This presents a problem if a kernel is either
upgraded or downgraded across the 4.15 kernel version boundary because
the case of the UUID will change, resulting in cloud-init seeing a
"new" instance id and re-running all modules.
Re-running cc_ssh in cloud-init deletes and regenerates ssh_host keys
on a system which can cause concern on long-running instances that
somethingnefarious has happened.
Also add:
- An integration test for this for Azure Bionic Ubuntu FIPS upgrading from
a FIPS kernel with uppercase UUID to a lowercase UUID in linux-azure
- A new pytest.mark.sru_next to collect all integration tests related to our
next SRU
LP: #1835584
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New datasource utilizing UpCloud metadata API, including relevant unit
tests and documentation.
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Add support for openstack's dynamic vendor data, which appears under openstack/latest/vendor_data2.json
This adds vendor_data2 to all pathways; it should be a no-op for non-OpenStack providers.
LP: #1841104
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This feature will modify VMware datasource to read from meta data and user data which are specified by VMware vSphere user. If meta data/user data are found in cloud-init configuration directory, datasource will parse the meta data/network and user data from the configuration file, otherwise it will continue to parse them from traditional customization configuration file as before. The supported meta data file is in json or yaml format.
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With the changes for SSH public keys to be retrieved from IMDS as a
first option, when a key is passed through not in the raw SSH public key
format it causes an issue and the key is not added to the user's
authorized_keys file.
This PR will temporarily disable this behavior until a permanent fix is
put in place.
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Prevent network interfaces without IP addresses from being added to the
generated network configuration.
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Adds the ability to run the Azure preprovisioned VMs as NIC-less and
then hot-attach them when assigned for reprovision.
The NIC on the preprovisioned VM is hot-detached as soon as it reports
ready and goes into wait for one or more interfaces to be hot-attached.
Once they are attached, cloud-init gets the expected number of NICs (in
case there are more than one) that will be attached from IMDS and waits
until all of them are attached. After all the NICs are attached,
reprovision proceeds as usual.
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cc_set_password will only update the password for the default user if
cfg['password'] is set. The existing code of datasource Azure will fail
to update the default user's password because it does not set that
metadata. If the default user doesn't exist in the image, the current
code works fine because the password is set during user create and
not in cc_set_password
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Increase Azure Endpoint HTTP retries to handle
occasional platform network blips.
Introduce a common method http_with_retries
in the azure.py helper, which will serve as
the common HTTP request handler for
all HTTP requests with the Azure endpoint.
This method has builtin retries and
reporting diagnostics logic.
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On systems where the Azure datasource
is a viable platform for crawling metadata,
cloud-init occasionally encounters fatal
irrecoverable errors during the crawling
of the Azure datasource.
When this happens, cloud-init crashes,
and Azure VM provisioning would fail.
However, instead of failing immediately,
the user will continue seeing provisioning
for a long time until it times out with
"OS Provisioning Timed Out" message.
In these situations, cloud-init should
report failure to the Azure datasource
endpoint indicating provisioning failure.
The user will immediately see provisioning
terminate, giving them a much better
failure experience instead of pointlessly
waiting for OS provisioning timeout.
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This just separates the reading of dmi values into its own file.
Some things of note:
* left import of util in dmi.py only for 'is_container'
It'd be good if is_container was not in util.
* just the use of 'util.is_x86' to dmi.py
* open() is used directly rather than load_file.
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Fixes erroneous string/int comparison introduced in 1431c8a
metadata['instance-id'] is an integer but the value read from smbios is
a string. The comparision would cause TypeError.
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Hetzner Cloud also provides the instance ID in SMBIOS information. Use
it to locally check_instance_id and to compared with instance_id from
metadata service.
LP: #1885527
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DataSourceAzure previously writes the preprovisioning
reported ready marker file before it goes through the
report ready workflow. On certain VM instances, the
marker file is successfully written but then reporting
ready fails.
Upon rare VM reboots by the platform, cloud-init sees
that the report ready marker file already exists.
The existence of this marker file tells cloud-init
not to report ready again (because it mistakenly
assumes that it already reported ready in
preprovisioning).
In this scenario, cloud-init instead erroneously
takes the reprovisioning workflow instead of
reporting ready again.
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Consider valid product names as valid chassis asset tags when detecting
OpenStack platform before crawling for OpenStack metadata.
As `ds-identify` tool uses product name as valid chassis asset tags,
let's replicate the behaviour in the OpenStack platform detection too.
This change should be backwards compatible and a temporary fix for the
current limitations on the OpenStack platform detection.
LP: #1895976
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enumeration of physical network devices (#591)
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fails (#549)
Azure datasource's `parse_network_config` throws a fatal uncaught exception when an exception is raised during generation of network config from IMDS metadata. This happens when IMDS metadata is invalid/corrupted (such as when it is missing network or interface metadata). This causes the rest of provisioning to fail.
This changes `parse_network_config` to be a non-fatal implementation. Additionally, when generating network config from IMDS metadata fails, fall back on generating fallback network config (`_generate_network_config_from_fallback_config`).
This also changes fallback network config generation (`_generate_network_config_from_fallback_config`) to blacklist an additional driver: `mlx5_core`.
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* pull ssh keys from imds first and fall back to ovf if unavailable
* refactor log and diagnostic messages
* refactor the OpenSSLManager instantiation and certificate usage
* fix unit test where exception was being silenced for generate cert
* fix tests now that certificate is not always generated
* add documentation for ssh key retrieval
* add ability to check if http client has security enabled
* refactor certificate logic to GoalState
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This fixes a long delay during boot of some instances. For Azure instance types using SR-IOV via the Hyper-V netvsc network driver, two network interfaces are created that share the same MAC, but only the virtual device should be configured and used. Updating the netplan configuration to filter on the hv_netvsc driver prevents netplan from trying to figure both devices.
LP: #1830740
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This PR refactors Azure report ready code to include more robust tests and telemetry.
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DataSourceAzure: Gracefully handle the case of set hostname failure during provisioning
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Add support for VMware's vCD configuration setting DEFAULT-RUN-POST-CUST-SCRIPT.
When set True, it will default vms to run post customization scripts if the VM has not been configured in VMTools with "enable-custom-scripts" set False.
Add datasource documentation with a bit more context about this interaction on VMware products.
With this fix, the behavior will be:
* If VM administrator doesn't want others to execute a script on this VM, VMtools can set "enable-custom-scripts" to false from the utility "vmware-toolbox-cmd".
* If VM administrator doesn't set value to "enable-custom-scripts", then by default this script is disabled for security purpose.
* For VMware's vCD product , the preference is to enable the script if "enable-custom-scripts" is not set. vCD will generate a configuration file with "DEFAULT-RUN-POST-CUST-SCRIPT" set to true. This flag works for both VMware customization engine and cloud-init.
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* cloudinit: remove global disable of pylint W0107 and fix errors
This includes removing a test class which contained no tests but wasn't
detected as empty because of an errant pass statement.
* .pylintrc: update disable comment to match arguments
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This includes a fix to a test that had a string concatenation issue, and
so was only testing a prefix of what was intended.
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This is an improvement over indirect parameterisation for a few reasons:
* The test code is much easier to read, the mark names are much more
intuitive than the indirect parameterisation invocation, and there's
less boilerplate to boot
* The fixture no longer has to overload the single parameter that
fixtures can take with multiple meanings
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As the first refactor PR, this also includes the initial structure for tests.
LP: #1884619
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Hetzner cloud only supports user-data as a string (presumably utf-8).
In order to allow users on Hetzner to provide binary data to cloud-init,
we will attempt to base64decode the userdata.
The change here adds a 'maybe_b64decode' function that will decode data
if and only if is base64 encoded.
The reason for not using util.b64d is that we do not want the return value
decoded to a string, and util.b64d will do that if it can. Additionally
we call decode with validate=True which oddly is not the default.
LP: #1884071
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This introduces a way to log the dhclient error stream, and uses it for the Azure datasource (where we have a specific requirement for this data to be logged).
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* test_opennebula: convert TestParseShellConfig to a pytest test
And allow it to run bash.
(We aren't aiming to convert TestCase tests to pytest tests as a rule.
In this case, I needed to change its implementation to limit subp usage,
and I chose pytest over CiTestCase.)
* test: move conftest.py to top-level, to cover tests/ also
This gives us a single conftest.py which is shared by all tests in the
project.
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This was painful, but it finishes a TODO from cloudinit/subp.py.
It moves the following from util to subp:
ProcessExecutionError
subp
which
target_path
I moved subp_blob_in_tempfile into cc_chef, which is its only caller.
That saved us from having to deal with it using write_file
and temp_utils from subp (which does not import any cloudinit things now).
It is arguable that 'target_path' could be moved to a 'path_utils' or
something, but in order to use it from subp and also from utils,
we had to get it out of utils.
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Improving the debugability of this code path by logging the thrown exception details for the non 404 exceptions.
Retry IMDS on HTTP Error 404 and 410, re-run DHCP on other exceptions.
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This fixes issues with closing brackets not matching the opening
bracket's line and continuation line under-idented for hanging indent.
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This removes the use of variables named ‘l’, ‘O’, or ‘I’. Generally
these are used in list comprehension to read the line of lines.
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We live in the future now.
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We want to set route-metrics such that NICs are configured with the priority that they are given in the network metadata that we receive from the IMDS. (This switches away from using MAC ordering.)
This also required the following test changes:
* reverse the sort order of the MACs in test data (so that they would trigger the bug being fixed)
* fix up the key names in `NIC2_MD` (which were under_scored instead of dash-separated)
* use a full interface dict (rather than a minimal one) for `TestConvertEc2MetadataNetworkConfig`
LP: #1876312
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Refactoring of the `find_devs_with_*bsd()` methods:
- centralize everything in `util.py`
- add test coverage
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These libraries provide backports of Python 3's stdlib components to Python 2. As we only support Python 3, we can simply use the stdlib now. This pull request does the following:
* removes some unneeded compatibility code for the old spelling of `assertRaisesRegex`
* replaces invocations of the Python 2-only `assertItemsEqual` with its new name, `assertCountEqual`
* replaces all usage of `unittest2` with `unittest`
* replaces all usage of `contextlib2` with `contextlib`
* drops `unittest2` and `contextlib2` from requirements files and tox.ini
It also rewrites some `test_azure` helpers to use bare asserts. We were seeing a strange error in xenial builds of this branch which appear to be stemming from the AssertionError that pytest produces being _different_ from the standard AssertionError. This means that the modified helpers weren't behaving correctly, because they weren't catching AssertionErrors as one would expect. (I believe this is related, in some way, to https://github.com/pytest-dev/pytest/issues/645, but the only version of pytest where we're affected is so far in the past that it's not worth pursuing it any further as we have a workaround.)
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We currently have a test system where get_interfaces_by_mac raises an
exception, which is causing these tests to fail as they aren't mocking
get_interfaces_by_mac out.
LP: #1873910
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