I'll look at the tool/ccfg-merge-debug; but it didn't look immediately helpful, so I ended up launching an lxd container with two files in /etc/cloud/cloud.cfg.d/ and using cloud-init clean --logs --reboot instead.
I'll take a second look at the tool. Diff comments: > diff --git a/doc/rtd/topics/merging.rst b/doc/rtd/topics/merging.rst > index c75ca59..3761305 100644 > --- a/doc/rtd/topics/merging.rst > +++ b/doc/rtd/topics/merging.rst > @@ -201,4 +201,43 @@ Note, however, that merge algorithms are not used > *across* types of > configuration. As was the case before merging was implemented, > user-data will overwrite conf.d configuration without merging. > > +Example cloud-config > +==================== > + > +A common request is to include multiple ``runcmd`` directives in different > +files and merge all of the commands together. To achieve this, we must > modify > +the default merging to allow for dictionaries to join list values. > + > + > +The first config > + > +.. code-block:: yaml > + > + #cloud-config > + merge_how: > + - name: list > + settings: [append] > + - name: dict > + settings: [no_replace, recurse_list] Yes and no. I can clarify though. If you are the *first* config to include the key you're interested in, and you're sure that no other config file will get read before you (in which case you'll clobber it) then no. I found this troublesome and really wanted a *global* way to configure merging for *all* configs, but that's not available at this time. This is the only way to ensure that conflicting keys retain data (the default is to overwrite dictionaries and lists). > + > + runcmd: > + - bash1 > + - bash2 > + > +The second config > + > +.. code-block:: yaml > + > + #cloud-config > + merge_how: > + - name: list > + settings: [append] > + - name: dict > + settings: [no_replace, recurse_list] > + > + runcmd: > + - bash3 > + - bash4 > + > + > .. vi: textwidth=78 -- https://code.launchpad.net/~raharper/cloud-init/+git/cloud-init/+merge/362083 Your team cloud-init commiters is requested to review the proposed merge of ~raharper/cloud-init:fix/merge-how-docs into cloud-init:master. _______________________________________________ Mailing list: https://launchpad.net/~cloud-init-dev Post to : cloud-init-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~cloud-init-dev More help : https://help.launchpad.net/ListHelp
