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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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* Refactor `cloudinit.net.wait_for_physdevs` to `cloudinit.distros.networking.Networking.wait_for_physdevs`
* Split the Linux-specific `udevadm_settle` call out to a separate abstract `Networking.settle` method; implement it on `LinuxNetworking` and add a `NotImplementedError` implementation to `BSDNetworking`
* Modify `wait_for_physdevs`s one callsite to use the new location
LP: #1884626
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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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As the first refactor PR, this also includes the initial structure for tests.
LP: #1884619
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Namely, is_connected, is_wireless and is_present. None of these are
used in the cloud-init codebase, so remove the dead code (instead of
refactoring it).
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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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Reason: commit ded1ec8 introduced a regression whereby a bridge with no "parameters:" setting caused a KeyError exception.
LP: #1879673
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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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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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Remove extra spaces after a ','
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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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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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LP: #1870421
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This also simplifies the implementation to rely on the stdlib, instead
of our own NIH checking.
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This will be required for the mirror URL sanitisation work,
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- tested on OpenBSD 6.6
- tested on OpenStack without config drive, and NoCloud with ISO config
drive
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These classes don't use `self.logs` anywhere in their body, so we can
remove the `with_logs = True` setting from them.
These instances were found using astpath[0], with the following
invocation:
astpath "//Name[@id='with_logs' and not(ancestor::ClassDef//Attribute[@attr='logs'])]"
[0] https://github.com/hchasestevens/astpath
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Add support for the NetBSD Operating System.
Features in this branch:
* Add BSD distro parent class from which NetBSD and FreeBSD can
specialize
* Add *bsd util functions to cloudinit.net and cloudinit.net.bsd_utils
* subclass cloudinit.distro.freebsd.Distro from bsd.Distro
* Add new cloudinit.distro.netbsd and cloudinit.net.renderer for
netbsd
* Add lru_cached util.is_NetBSD functions
* Add NetBSD detection for ConfigDrive and NoCloud datasources
This branch has been tested with:
- NoCloud and OpenStack (with and without config-drive)
- NetBSD 8.1. and 9.0
- FreeBSD 11.2 and 12.1
- Python 3.7 only, because of the dependency oncrypt.METHOD_BLOWFISH.
This version is available in NetBSD 7, 8 and 9 anyway
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Allow disabling cloud-init's network configuration via a plain-text kernel cmdline
Cloud-init docs indicate that users can disable cloud-init networking via kernel
command line parameter 'network-config=<YAML>'. This does not work unless
the <YAML> payload base64 encoded. Document the base64 encoding
requirement and add a plain-text value for disabling cloud-init network config:
network-config=disabled
Also:
- Log an error and ignore any plain-text network-config payloads that are
not specifically 'network-config=disabled'.
- Log a warning if network-config kernel param is invalid yaml but do not
raise an exception, allowing boot to continue and use fallback networking.
LP: #1862702
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- Introduce the "flavor" configuration option for the sysconfig renderer
this is necessary to account for differences in the handling of the
BOOTPROTO setting between distributions (lp#1858808)
+ Thanks to Petr Pavlu for the idea
- Network config clean up for sysconfig renderer
+ The introduction of the "flavor" renderer configuration allows us
to only write values that are pertinent for the given distro
- Set the DHCPv6 client mode on SUSE (lp#1800854)
Co-authored-by: Chad Smith <chad.smith@canonical.com>
LP: #1800854
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It is proto 'none', not 'static' as was mistakenly implemented in
initramfs-tools/cloud-init in the past, yet was never the case in the
klibc ipconfig state file output.
LP: #1861412
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* cloudinit: replace "import mock" with "from unittest import mock"
* test-requirements.txt: drop mock
Co-authored-by: Chad Smith <chad.smith@canonical.com>
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* url_helper: drop six
* url_helper: sort imports
* log: drop six
* log: sort imports
* handlers/__init__: drop six
* handlers/__init__: sort imports
* user_data: drop six
* user_data: sort imports
* sources/__init__: drop six
* sources/__init__: sort imports
* DataSourceOVF: drop six
* DataSourceOVF: sort imports
* sources/helpers/openstack: drop six
* sources/helpers/openstack: sort imports
* mergers/m_str: drop six
This also allowed simplification of the logic, as we will never
encounter a non-string text type.
* type_utils: drop six
* mergers/m_dict: drop six
* mergers/m_list: drop six
* cmd/query: drop six
* mergers/__init__: drop six
* net/cmdline: drop six
* reporting/handlers: drop six
* reporting/handlers: sort imports
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* net: fix rendering of 'static6' in network config
A V1 static6 network typo was misrendered in eni, it's not valid.
It was ignored in sysconfig and netplan. This branch fixes eni,
updates sysconfig, netplan to render it correctly and adds unittests
for all cases.
Reported-by: Raphaël Enrici
LP: #1850988
* net: add comment about static6 type in subnet_is_ipv6
Co-authored-by: Chad Smith <blackboxsw@gmail.com>
Co-authored-by: Daniel Watkins <daniel@daniel-watkins.co.uk>
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* freebsd: introduce the freebsd renderer
Refactoring of the FreeBSD code base to provide a real network renderer
for FreeBSD.
Use the generic update_sysconfig_file() from rhel_util to handle the
access to /etc/rc.conf.
Interfaces are not automatically renamed by FreeBSD using
the following configuration in /etc/rc.conf:
```
ifconfig_fxp0_name="eth0"
```
* freesd: use regex named groups
Reduce the complexity of `get_interfaces_by_mac_on_freebsd()` with
named groups.
* freebsd: breaks up _write_network() in tree small functions
- `_write_ifconfig_entries()`
- `_write_route_entries()`
- `_write_resolve_conf()`
* extend find_fallback_nic() to support FreeBSD
this uses `route -n show default` to find the default interface
* freebsd: use dns keys from NetworkState class
The NetworkState class (settings instance) exposes the DNS configuration
in two keys:
- `dns_nameservers`
- `dns_searchdomains`
On OpenStack, these keys are set when a global DNS server is set. The
alternative is the `dns_nameservers` and `dns_search` keys from each
subdomain. We continue to read those.
* freebsd: properly target the /etc/resolv.conf file
* freebsd: ignore 'service routing restart' ret code
On FreeBSD 10, the restart of routing and dhclient is likely to fail because
- routing: it cannot remove the loopback route, but it will still set up
the default route as expected.
- dhclient: it cannot stop the dhclient started by the netif service.
In both case, the situation is ok, and we can proceed.
* freebsd: handle case when metadata MAC local locally
Handle the case where the metadata configuration comes with a MAC that
does not exist locally.
See:
- https://github.com/canonical/cloud-init/pull/61/files/635ce14b3153934ba1041be48b7245062f21e960#r359600604
- https://github.com/canonical/cloud-init/pull/61/files/635ce14b3153934ba1041be48b7245062f21e960#r359600966
* freebsd: show up a warning if several subnet found
The FreeBSD provider currently only allow one subnet per interface.
* freebsd: honor the target parameter in _write_network
* freebsd: log when a bad route is found
* freebsd: pass _postcmds to start_services()
* freebsd: updatercconf() is depercated
Replace `updatercconf()` by `rhel_util.update_sysconfig_file()`.
* freebsd: ensure gateway is ipv4 before using it
With the legacy ENI format, an IPv6 gateway may be pushed. This instead
of the expected IPv4.
* freebsd: find_fallback_nic, support FB10
On FreeBSD <= 10, `ifconfig -l` ignores the down interfaces.
* freebsd: use util.target_path() to load resolv.conf
Ensure we access `/etc/resolv.conf`, not `etc/resolv.conf`.
* freebsd: skip subnet without netmask
Those are likely to be either invalid of in IPv6 format. IPv6 support
will be addressed later in a new patchset.
* freebsd: get_devicelist returns netif list
Ensure `get_devicelist()` returns the list of known netif on FreeBSD.
* replace rhel_util.update_sysconfig_file wrapper call, with a wrapper function
* reverse if condition to remove an indent
Co-authored-by: Igor Galić <me+github@igalic.co>
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RedHat dhcp client writes out rfc3442 classless-static-routes in a different format[1]
than what is found in isc-dhcp clients. This patch adds support for the RedHat format.
1. Background details on the format
https://bugzilla.redhat.com/show_bug.cgi?id=516325
https://github.com/vaijab/fedora-dhcp/blob/e83fb19c51765442d77fa60596bfdb2b3b9fbe2e/dhcp-rfc3442-classless-static-routes.patch#L252
https://github.com/heftig/NetworkManager/blob/f56c82d86122fc45304fc829b5f1e4766ed51589/src/dhcp-manager/nm-dhcp-client.c#L978
LP: #1850642
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Sending a valid but empty v1 network config resulted in a
stacktrace during execution. Update the network_state
parse path to specific check if the 'config' key is None
(not present) versus being present but explicitly empty.
Also add some network_state unittests.
LP: #1852496
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Router advertisements are required for the default route
to be set up, thus accept_ra should be enabled for
dhcpv6-stateful.
sysconf: IPV6_FORCE_ACCEPT_RA controls accept_ra sysctl.
eni: mode static and mode dhcp 'accept_ra' controls sysctl.
Add 'accept-ra: true|false' parameter to config v1 and
v2. When True: accept_ra is set to '1'. When False:
accept_ra is set to '0'. When not defined in config the
value is left to the operating system default.
This change also extend the IPv6 support to distinguish
between slaac and dhcpv6-stateless. SLAAC is autoconfig
without any options from DHCP, while stateless auto-configures
the address and the uses DHCP for other options.
LP: #1806014
LP: #1808647
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Network v2 configuration for Azure will set both dhcp4 and
dhcp6 to False by default.
When IPv6 privateIpAddresses are present for an interface in Azure's
Instance Metadata Service (IMDS), set dhcp6: True and provide a
route-metric value that will match the corresponding dhcp4 route-metric.
The route-metric value will increase by 100 for each additional
interface present to ensure the primary interface has a route to IMDS.
Also fix dhcp route-metric rendering for eni and sysconfig distros.
LP: #1850308
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Function return false for ipv6_dhcpv6-stateless|stateful,
the eni renderer does not add '6' to 'inet' which is
incorrect.
The subnet_is_ipv6() function is updated to also return
true if startswith('ipv6').
LP: #1848690
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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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In addition to ifup/ifdown the sysconfig renderer looks for
evidence that the sysconfig directory is properly populated.
This secondary check only considered RedHat specific location.
Fix this by adding a SUSE specific file and returning True if
either RedHat or SUSE file is present.
LP: #1849378
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Commit e7b0e5f72 added support for configuring infiniband devices by
adding a new infiniband 'type'. This commit updates eni and sysconfig
renderers to consume this new type and configure infiniband devices
correctly.
LP: #1847114
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Openstack subnets can be configured to use SLAAC by setting
ipv6_address_mode=dhcpv6-stateless. When this is the case
the sysconfig interface configuration should use
IPV6_AUTOCONF=yes and not set DHCPV6C=yes.
This change sets the subnets type property to the full
network['type'] from openstack metadata.
cloudinit/net/sysconfig.py and cloudinit/net/eni.py
are updated to support new subnet types:
- 'ipv6_dhcpv6-stateless' => IPV6_AUTOCONF=yes
- 'ipv6_dhcpv6-stateful' => DHCPV6C=yes
Type 'dhcp6' in sysconfig is kept for backward compatibility
with any implementations that set subnet_type == 'dhcp6'.
LP: #1847517
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The change that introduced this issue was handling interfaces that are
bonded in the kernel, in a way that doesn't present as "a bond" to
userspace in the normal way. Both members of this "bond" will share a
MAC address, so we filter one of them out to avoid incorrect MAC address
collision warnings.
Unfortunately, the matching condition was too broad, so that change also
affected normal bonds and bridges. This change specifically excludes
bonds and bridges from that determination, to address that regression.
LP: #1846535
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If an OS image provided an /etc/resolv.conf file that was not empty
cloud-init would read and re-write it with a cloud-init header even
if no DNS network configuration was provided (e.g. DHCP only).
This can cause problems for some network services which don't
ignore cloud-init's header.
LP: #1843634
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The sysconfig renderer used the distro name directly which mean
some variants of distros were not considered supported. Fix this
by using util.system_info()['variant'] instead. Fix the list of
KNOWN_DISTROS value for redhat -> rhel.
LP: #1843584
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Some network devices are transformed into a bond via kernel magic
and do not have the 'bonding' sysfs attribute, but like a bond they
have a duplicate MAC of other bond members. On Azure Advanced
Networking SRIOV devices are auto bonded and will have the same MAC
as the HyperV nic. We can detect this via the 'master' sysfs attribute
in the device sysfs path and this patch adds this to the list of devices
we ignore when enumerating device lists.
LP: #1844191
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Add support for detecting netfailover[1] device 3-tuple in networking
layer. In the Oracle datasource ensure that if a provided network
config, either fallback or provided config includes a netfailover master
to remove any MAC address value as this can break under 3-netdev
as the other two devices have the same MAC.
1. https://www.kernel.org/doc/html/latest/networking/net_failover.html
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This refactors read_initramfs_config to support multiple different types
of initramfs network configuration. It introduces an
InitramfsNetworkConfigSource abstract base class. There is currently a
single sub-class, KlibcNetworkConfigSource, which contains the logic
which previously was directly within read_initramfs_config.
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The function generate_fallback_config is used by Azure by default when
not consuming IMDS configuration data. This function is also used by any
datasource which does not implement it's own network config. This simple
fallback configuration sets up dhcp on the most likely NIC. It will now
emit network v2 instead of network v1.
This is a step toward moving all components talking in v2 and allows us
to avoid costly conversions between v1 and v2 for newer distributions
which rely on netplan.
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Previously "cmdline" network configuration could be either
user-specified network-config=... configuration data, or
initramfs-provided configuration data. Before data sources could modify
the order in which network config sources were considered, this
conflation didn't matter (and, indeed, in the default data source
configuration it will continue to not matter).
However, it _is_ desirable for a data source to be able to specify that
its network configuration should be preferred over the
initramfs-provided network configuration but still allow explicit
network-config=... configuration passed to the kernel cmdline to
continue to override both of those sources.
(This also modifies the Oracle data source to use read_initramfs_config
directly, which is effectively what it was using
read_kernel_cmdline_config for previously.)
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If input to network_state.parse_net_config_data was netplan (v2 yaml)
then the network state would lose the mtu information on bond or vlan.
LP: #1836949
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