drop 'not os.access(os.W_OK)' check from resizefs because os.access as root will always return writable and resizefs of read-only devices will perform no resize operation and exit
cloud-config modules: honor distros definitions in each module
Modules can optionally define a list of supported distros on which they can run
by declaring a distros attribute in the cc_*py module. This branch fixes
handling of cloudinit.stages.Modules.run_section. The behavior of run_section
is now the following:
- always run a module if the module doesn't declare a distros attribute
- always run a module if the module declares distros = [ALL_DISTROS]
- skip a module if the distribution on which we run isn't in module.distros
- force a run of a skipped module if unverified_modules configuration contains
the module name
chef: Add option to pin chef omnibus install version
Most users of chef will want to pin the version that is installed.
Typically new versions of chef have to be evaluated for breakage etc.
This change proposes a new optional `omnibus_version` field to the chef
configuration. The changeset also adds documentation referencing the new
field.
If a string is passed to execute, then invoke 'bash', '-c',
'string'. That allows the less verbose execution of simple
commands:
image.execute("ls /run")
compared to the more explicit but longer winded:
image.execute(["ls", "/run"])
If 'env' was ever modified in execute or a method that it called,
then the next invocation's default value would be changed. Instead
use None and then set to a new empty dict in the method.
schema and docs: Add jsonschema to resizefs and bootcmd modules
Add schema definitions to both cc_resizefs and cc_bootcmd modules. Extend
schema.py to parse and document enumerated json types. Schema definitions
are used to generate module documention and log warnings for schema
infractions.
This branch also does the following:
- drops vestigial 'resize_rootfs_tmp' option from cc_resizefs. That
option only created the specified directory and didn't make use of
that directory for any resize operations.
- Drop yaml.dumps calls from schema documentation generation to avoid
yaml import costs on module load
- Add __doc__ = get_schema_doc(schema) definitions it each module to
supplement python help() calls for cc_runcmd, cc_bootcmd, cc_ntp and
cc_resizefs
- Add a SCHEMA_EXAMPLES_SPACER_TEMPLATE string to docs for modules which
contain more than one example
vmware customization: return network config format
For customizing the machines hosted on 'VMWare' hypervisor, the datasource
should return the 'network config' data in 'curtin' format.
This branch also fixes /etc/network/interfaces replacing the line
"source /etc/network/interfaces.d/*.cfg" which is incorrectly removed
when VMWare's Perl Customization Engine writes /etc/network/interfaces.
Modify the code to read the customization configuration and return the
converted data.
Ec2: only attempt to operate at local mode on known platforms.
This change makes the DataSourceEc2Local do nothing unless it is on
actual AWS platform. The motivation is twofold:
a.) It is generally safer to only make this function available to Ec2
clones that explicitly identify themselves to the guest. (It also
gives them a reason to supply identification code to cloud-init.)
b.) On non-intel OpenStack platforms ds-identify would enable both the Ec2
and OpenStack sources. That is because there is not good data (such as
dmi) to positively identify the platform. Previously that would be fine
as OpenStack would run first and be successful. The change to add Ec2Local
meant that an Ec2 now runs first.
The best case for 'b' would be a slow down as attempts at the Ec2 metadata
service time out. The discovered case was worse.
Additionally we add a simple check for datatype of 'network' in the
metadata before attempting to read it.
During boot, the usage of /tmp is not safe. In systemd systems,
systemd-tmpfiles-clean may run at any point and clear out a temp file
while cloud-init is using it. The solution here is to use
/run/cloud-init/tmp.
