Re: Cyrus-imapd fails to bind on reboot when assigned to listen on specific IP

> On 3/21/21 1:50 PM, Simon Loader wrote:
>> On Sun, 21 Mar 2021 at 16:51, Simon Matter <[email protected]>
>> wrote:
>>>> When I don't specify an IP address, cyrus-imapd starts correctly on a
>>>> server reboot.
>>>>
>>>> When I specify IP / protocol:
>>>>
>>>>     imap   cmd="imapd"   listen="192.168.1.230:imap"  prefork=5
>>>> proto=tcp4
>>>>
>>>> cyrus-imapd tries to bind to those before it is available, and fails:
>>>>
>>>> Mar 20 20:53:31 emp87 cyrus/master[973]: unable to bind to imap/ipv4
>>>> socket: Cannot assign requested address
>>>> Mar 20 20:53:31 emp87 cyrus/master[973]: unable to create imap
>>>> listener
>>>> socket: Cannot assign requested address
>>>>
>>> While thinking about it again, wouldn't it make sense to make master a
>>> bit
>>> more robust so that it tries to start a service if it failed before, as
>>> part of its maintenance functionality?
>> Depends if restarting is making things worse it's not always the correct
>> thing
>> to do. You can change the systemd config to always restart it but this
>> sort of
>> fix is always because of another underlying problem and not a good sign.
>>
>>   I'm old and not the biggest systemd fan or biggest knowledge about it.
>> It is interesting seeing this thread. I can not see why cyrusd would not
>> depend not network and FS to be up or any email service not depending
>> on these 2 things working.
>
> Simon L.,
> While I'm sure Simon M. can speak for himself, I'll pipe up here.  I
> believe what he was saying is that 'master,' now known as 'cyrmaster,'
> the Cyrus super-daemon, should periodically try to restart any listener
> sockets called for in the SERVICE section of cyrus.conf if which fails
> to start in the beginning (assuming 'prefork' > 0).
>
> I wholeheartedly agree with this idea.
>
> Simon M.,
> Are you submitting a feature request to the Cyrus team for this?  If
> not, I'll be happy to do so.  It's a capital suggestion.
>
> Cheers,
>      -nic

Hi Nic,

Thank you for offering to file an FR for it, feel free to do so. I guess
you know better than me where to file such things these days.

Regards,
Simon


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