hostname changed to wrong interface

[fnoop]

Notice: /Stage[bootstrap]/Hosts/Host[maverick-nano.tendawifi.com]/ip: ip changed '192.168.5.129' to '172.17.0.1'

7: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
    link/ether 02:42:74:7a:55:12 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever

Interface is down, shouldn't take IP from here. Also shouldn't take from docker..

[fnoop]

If 'primaryip' is set in hiera(localconf) then this is used, otherwise it falls back to the ipaddress fact. Facter says this is deprecated: https://puppet.com/docs/facter/3.9/core_facts.html#ipaddress What should we use?

[fnoop]

https://www.gesellix.net/post/facter-docker-and-the-public-ip-address/ https://tickets.puppetlabs.com/browse/FACT-380

The puppetlabs ticket indicate that facter3 should have a better logic for determining ::ipaddress than facter2. Don't know why we're still on facter2, try upgrading.

[fnoop]

Separate facter project is stuck at 3.11, but more recent versions are documented as part of puppet-opensource: https://puppet.com/docs/puppet/latest/release_notes_facter.html#concept-5716 These docs say version 3.14.9 distributed with puppet 6.14.0, but actually that doesn't seem to exist, and 4.0.12 is installed instead.

[fnoop]

With the new facter we get a warning: Warning: Could not retrieve either serverip or serverip6 fact Once this is resolved, maybe serverip is a better fact to use.

[fnoop]

There is no facter 3.x available through gem, only 4.0.12 which doesn't exist anywhere in puppetlabs docs or in github releases. Bit of a mess - backtrack to 2.5.7 for now ..

[fnoop]

As per the FACT-380 notes, running docker will effectively break the ipaddress fact: Notice: /Stage[bootstrap]/Hosts/Host[maverick-nano.local]/ip: ip changed '192.168.1.91' to '172.17.0.1'

Either we disable docker, or we find another workaround.

[SamuelDudley]

Sorry for the impending dumb question: what is using Docker on a maverick image? Some of the configuration tooling?

[fnoop]

No absolutely nothing - but it's installed on some platforms by default, or as a dependency for some things. It popped up on my nano ubuntu, can't remember if it was there at install or not.

I'm going to disable/uninstall it by default, but with a parameter to turn it back on, and will document it along with the primaryip localconf parameter that can override.

[fnoop]

Added base::packages::docker param, false by default, which if false disables and uninstalls docker including the docker0 interface. However it needs maverick configure to be run twice - once to disable the interface, the second to pick up the new primary ip and write it to /etc/hosts.

[fnoop]

Will have to do for now - keep open to document primaryip param and docker params.