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

[Donald Sharp]

To circle back around, Brandon, myself and a couple of other people
had a talk offline and the upshoot of all of this is that FRR did not
start because one of it's systemd dependancies did not succesfully
start.  Once we solved this issue, Brandon was able to start FRR on
startup as expected.

donald

On Fri, Aug 10, 2018 at 3:22 PM, Brandon Applegate <brandon at burn.net> wrote:
> 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.
>
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> Brandon Applegate - CCIE 10273
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