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Handlers for per-boot/per-instance/per-once multipart MIME
Add handlers for adding scripts to userdata that can be run at various
frequencies. Scripts of type x-shellscript-per-boot,
x-shellscript-per-instance, or x-shellscript-per-once can be added
to a multipart MIME userdata message as part of instance userdata.
These scripts will then be added to the appropriate per-boot,
per-instance, or per-once directory in /var/lib/cloud/scripts/
during processing of userdata.
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Applied Black and isort, fixed any linting issues, updated tox.ini
and CI.
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This attempts to standardize unit test file location under test/unittests/
such that any source file located at cloudinit/path/to/file.py may have a
corresponding unit test file at test/unittests/path/to/test_file.py.
Noteworthy Comments:
====================
Four different duplicate test files existed:
test_{gpg,util,cc_mounts,cc_resolv_conf}.py
Each of these duplicate file pairs has been merged together. This is a
break in git history for these files.
The test suite appears to have a dependency on test order. Changing test
order causes some tests to fail. This should be rectified, but for now
some tests have been modified in
tests/unittests/config/test_set_passwords.py.
A helper class name starts with "Test" which causes pytest to try
executing it as a test case, which then throws warnings "due to Class
having __init__()". Silence by changing the name of the class.
# helpers.py is imported in many test files, import paths change
cloudinit/tests/helpers.py -> tests/unittests/helpers.py
# Move directories:
cloudinit/distros/tests -> tests/unittests/distros
cloudinit/cmd/devel/tests -> tests/unittests/cmd/devel
cloudinit/cmd/tests -> tests/unittests/cmd/
cloudinit/sources/helpers/tests -> tests/unittests/sources/helpers
cloudinit/sources/tests -> tests/unittests/sources
cloudinit/net/tests -> tests/unittests/net
cloudinit/config/tests -> tests/unittests/config
cloudinit/analyze/tests/ -> tests/unittests/analyze/
# Standardize tests already in tests/unittests/
test_datasource -> sources
test_distros -> distros
test_vmware -> sources/vmware
test_handler -> config # this contains cloudconfig module tests
test_runs -> runs
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This commit removes automatically installing udev rules for hotplug
and adds a module to install them instead.
Automatically including the udev rules and checking if hotplug was
enabled consumed too many resources in certain circumstances. Moving the
rules to a module ensures we don't spend extra extra cycles on hotplug
if hotplug functionality isn't desired.
LP: #1946003
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Using flake8 inplace of pyflakes
Renamed run-pyflakes -> run-flake8
Changed target name to flake8 in Makefile
With pyflakes we can't suppress warnings/errors in few required places.
flake8 is flexible in that regard. Hence using flake8 seems to be a
better choice here.
flake8 does the job of pep8 anyway.
So, removed pep8 target from Makefile along with tools/run-pep8 script.
Included setup.py in flake8 checks
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Update "cloud-init collect-logs" to ignore
/run/cloud-init/hook-hotplug-cmd as this will raise the error
"/run/cloud-init/hook-hotplug-cmd` is a named pipe" if included.
Also updated logs.py to continue writing the tarball if it fails
collecting a file rather than let the exception bubble up.
LP: #1940235
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Alters hotplug hook to have a query mechanism checking if the
functionality is enabled. This allows us to avoid using the hotplug
socket and service when hotplug is disabled.
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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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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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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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Changes:
tox: bump the pylint version to 2.6.0 in the default run
Fix pylint 2.6.0 W0707 warnings (raise-missing-from)
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* cli: add devel make-mime subcommand
Cloud-init documents an in-source-tree tool, make-mime.py used to
help users create multi-part mime user-data. This tool is not shipped
in the cloud-init install and unavailable at runtime. This patch
takes tools/make-mime.py and makes the functionality available via
the devel subcommand.
The primary interface of --attach file:content-type is still present.
The cli now adds:
-l, --list-types Print out a list of supported content-types
-f, --force Ignore errors for unsupported content-types
The tool will now raise a RunTime error if the supplied content-type
is not supported (or more likely a typo:
x-shell-script vs. x-shellscript)
* make-mime: write to stderr and exit 1 instead of raising RuntimeError
* Update example to match docs
* Update docs for make-mime subcommand
* Remove tools/make-mime.py; replaced by cloud-init devel make-mime
Co-authored-by: Rick Harding <rharding@mitechie.com>
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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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netplan introduced an 'info' subcommand which emits yaml describing
implemented features that indicate new or changed fields and values
in the yaml that it accepts. Previously, cloud-init emitted the key
'mtu6' for ipv6 MTU values. This is not correct and netplan will
fail to parse these values. Netplan as of 0.98 supports both the
info subcommand and the ipv6-mtu key.
This branch modifies the netplan renderer to collect the netplan
info output into a 'features' property which is a list of available
feature flags which the renderer can use to modify its output. If
the command is not available, no feature flags are set and
cloud-init will render IPv6 MTU values just as MTU for the subnet.
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Here we replace uses of the pyyaml module directly with functions
provided by cloudinit.safeyaml. Also, change/move
cloudinit.util.yaml_dumps
to
cloudinit.safeyaml.dumps
LP: #1849640
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Move routes under the nic's subnet rather than use top-level
("global") route config ensuring all net renderers will provide the
configured route.
Also updated cloudinit/cmd/devel/net_convert.py:
- Add input type 'vmware-imc' for OVF customization config files
- Fix bug when output-type was netplan which invoked netplan
generate/apply and attempted to write to
/etc/netplan/50-cloud-init.yaml instead of joining with the
output directory.
LP: #1806103
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Since /run/cloud-init/instance-data-sensitive.json is root read-only,
ignore this file if non-root user runs collect-logs.
If --include-userdata is provided on the command line, exit in error
if non-root user attempts this operation.
Lastly, update the __main__ to exit based on return value of main.
LP: #1805201
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Emit a permissions error instead of "Missing instance-data.json" when
non-root user doesn't have read-permission on
/run/cloud-init/instance-data.json
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On cloud-init upgrade path from 18.3 to 18.4 cloud-init changed how
instance-data is written. Cloud-init changes instance-data.json from root
read-only to redacted world-readable content, and provided a separate
unredacted instance-data-sensitive.json which is read-only root.
Since instance-data is only rewritten from cache on
reboot, the query and render tools needed fallback to use the 'old'
instance-data.json if the new sensitive file isn't yet present.
This avoids error messages from tools about an absebt
/run/instance-data-sensitive.json file.
LP: #1798189
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Cloud-init caches any cloud metadata crawled during boot in the file
/run/cloud-init/instance-data.json. Cloud-init also standardizes some of
that metadata across all clouds. The command 'cloud-init query' surfaces a
simple CLI to query or format any cached instance metadata so that scripts
or end-users do not have to write tools to crawl metadata themselves.
Since 'cloud-init query' is runnable by non-root users, redact any
sensitive data from instance-data.json and provide a root-readable
unredacted instance-data-sensitive.json. Datasources can now define a
sensitive_metadata_keys tuple which will redact any matching keys
which could contain passwords or credentials from instance-data.json.
Also add the following standardized 'v1' instance-data.json keys:
- user_data: The base64encoded user-data provided at instance launch
- vendor_data: Any vendor_data provided to the instance at launch
- underscore_delimited versions of existing hyphenated keys:
instance_id, local_hostname, availability_zone, cloud_name
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Allow users to provide '## template: jinja' as the first line or their
#cloud-config or custom script user-data parts. When this header exists,
the cloud-config or script will be rendered as a jinja template.
All instance metadata keys and values present in
/run/cloud-init/instance-data.json will be available as jinja variables
for the template. This means any cloud-config module or script can
reference any standardized instance data in templates and scripts.
Additionally, any standardized instance-data.json keys scoped below a
'<v#>' key will be promoted as a top-level key for ease of reference in
templates. This means that '{{ local_hostname }}' is the same as using the
latest '{{ v#.local_hostname }}'.
Since instance-data is written to /run/cloud-init/instance-data.json, make
sure it is persisted across reboots when the cached datasource opject is
reloaded.
LP: #1791781
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Multiple distros use sysconfig format but have different content
and paths to certain files. Update distros to specify these
template paths in their renderer_configs dictionary.
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Azure datasource now queries IMDS metadata service for network
configuration at link local address
http://169.254.169.254/metadata/instance?api-version=2017-12-01. The
azure metadata service presents a list of macs and allocated ip addresses
associated with this instance. Azure will now also regenerate network
configuration on every boot because it subscribes to EventType.BOOT
maintenance events as well as the 'first boot'
EventType.BOOT_NEW_INSTANCE.
For testing add azure-imds --kind to cloud-init devel net_convert tool
for debugging IMDS metadata.
Also refactor _get_data into 3 discrete methods:
- is_platform_viable: check quickly whether the datasource is
potentially compatible with the platform on which is is running
- crawl_metadata: walk all potential metadata candidates, returning a
structured dict of all metadata and userdata. Raise InvalidMetaData on
error.
- _get_data: call crawl_metadata and process results or error. Cache
instance data on class attributes: metadata, userdata_raw etc.
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Move the tools/net-convert.py to be exposed as part of 'cloud-init devel'
subcommands.
It can now be called like:
$ cloud-init devel net-convert
Or, if you just have checked out source (and no cli executable):
$ python3 -m cloudinit.cmd.devel.net_convert
or
$ python3 -m cloudinit.cmd.main devel net-convert
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With no output at all from collect-logs, users have been confused
on where the output is. By default now, write to stderr what that
file is.
Also
* add '-v' to increase verbosity. With a single -v flag, mention
what file/info is being collected.
* limit the 'journalctl' collection to this boot (--boot=0).
collecting entire journal seems unnecessary and can be huge.
* do not fail when collecting files or directories that are not there.
LP: #1766335
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Add a new collect-logs sub command to the cloud-init CLI. This script
will collect all logs pertinent to a cloud-init run and store them in a
compressed tar-gzipped file. This tarfile can be attached to any
cloud-init bug filed in order to aid in bug triage and resolution.
A cloudinit.apport module is also added that allows apport interaction.
Here is an example bug filed via ubuntu-bug cloud-init: LP: #1716975.
Once the apport launcher is packaged in cloud-init, bugs can be filed
against cloud-init with the following command:
ubuntu-bug cloud-init
LP: #1607345
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This branch does a few things:
- Add 'schema' subcommand to cloud-init CLI for validating
cloud-config files against strict module jsonschema definitions
- Add --annotate parameter to 'cloud-init schema' to annotate
existing cloud-config file content with validation errors
- Add jsonschema definition to cc_runcmd
- Add unit test coverage for cc_runcmd
- Update CLI capabilities documentation
This branch only imports development (and analyze) subparsers when the
specific subcommand is provided on the CLI to avoid adding costly unused
file imports during cloud-init system boot.
The schema command allows a person to quickly validate a cloud-config text
file against cloud-init's known module schemas to avoid costly roundtrips
deploying instances in their cloud of choice. As of this branch, only
cc_ntp and cc_runcmd cloud-config modules define schemas. Schema
validation will ignore all undefined config keys until all modules define
a strict schema.
To perform validation of runcmd and ntp sections of a cloud-config file:
$ cat > cloud.cfg <<EOF
runcmd: bogus
EOF
$ python -m cloudinit.cmd.main schema --config-file cloud.cfg
$ python -m cloudinit.cmd.main schema --config-file cloud.cfg \
--annotate
Once jsonschema is defined for all ~55 cc modules, we will move this
schema subcommand up as a proper subcommand of the cloud-init CLI.
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