[FROG] FRR not starting at boot - Debian testing (10)

[Brandon Applegate]

So yes - I know I’ve done this to myself to some extent by running a “testing” OS.  But hear me out…

I’m cloning these boxes in vmware and configuring with ansible.  So they are very consistent.  FRR is 5.0.1.

On one configuration - FRR starts as expected.  On another box - FRR will not start automatically.  There’s nothing in logs - it doesn’t even seem like it tries.  But if I log in and manually “sudo systemctl restart frr” it comes right up.  I don’t claim to be a systemd expert - but I did play around a bit in the unit file trying to add an ExecStartPre with a sleep - no dice.  I also thought it might similar to: https://github.com/FRRouting/frr/issues/1340

However, I see that watchfrr gets ran anyway (I don’t have this in the daemons file).  That’s fine, but it doesn’t jive with the issue 1340 above.  So I don’t think that’s my issue at play here.

I can tell you the main difference in the two boxes (working vs. not) is the frr config itself (daemons are the same) and IP addresses/interfaces.

On the working box I have about 30 lines of frr.conf.  I have maybe ~10 total ips, split between ipv4/6.  frr.conf is ospf and ospfv6.

On the boxes where it won’t start at boot - I have about 60 lines of FRR conf.  I have about 20 total ips, split between ip4/6.  About 20 BGP peers (again split between ipv4/ipv6 - so 10 each).

Anyone have any idea what I can look at next ?  I can put some ansible in to log back into the problem boxes and manually start frr - but that’s a hacky and cheap method.  I’d rather understand what’s going on and fix it properly.

Thanks.

--
Brandon Applegate - CCIE 10273
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