Bug 1941255

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(In reply to Simon Wilson from comment #0)
> Description of problem:
> 
> When specifying an IP address for cyrus to bind to in cyrus.conf, the cyrus
> systemd file attempts to load cyrus-imapd before the IP address is
> available, and the binds fail - leaving cyrus-imapd in a useless (but
> running) state.
> 
> Version-Release number of selected component (if applicable):
> 3.0.7
> 
> How reproducible:
> Add a specific IP into one of the SERVICES in /etc/cyrus.conf; reboot. Cyrus
> fails to come up on reboot.
> 
> Steps to Reproduce:
> 1. In cyrus.conf add a specified IP: (e.g.) imap   cmd="imapd"  
> listen="192.168.1.230:imap"  prefork=5  proto=tcp4
> 2. systemctl enable cyrus-imapd
> 3. reboot
> 
> Actual results:
> 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
> 
> Expected results:
> If a bind IP address is specified the system should not load cyrus-imapd
> until the IP address is available - depend on network-online.target not
> network.target?
> 
> Additional info:
> Adding "network-online.target" in
> /usr/lib/systemd/system/cyrus-imapd.service [Unit] 'After' section resolves
> the issue for me, although I assume this would slow down boot on systems
> without a specified IP for binding to.
> 
> NetworkManager is active, IP address is statically assigned.
> [root@emp87 ~]# nmcli connection show
> NAME    UUID                                  TYPE      DEVICE
> enp1s0  99bd7bb3-0ce0-4d97-a66c-8b44dc84c287  ethernet  enp1s0
> 
> [root@emp87 ~]# systemctl status network-online.target
> ● network-online.target - Network is Online
>    Loaded: loaded (/usr/lib/systemd/system/network-online.target; static;
> vendor preset: disabled)
>    Active: active since Sun 2021-03-21 01:38:16 AEST; 14h ago
>      Docs: man:systemd.special(7)
>            https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget
> 
> Mar 21 01:38:16 emp87.simonandkate.lan systemd[1]: Reached target Network is
> Online.
> 
> Unlike https://bugzilla.redhat.com/show_bug.cgi?id=1856263 this one is
> resolved by network-online.target.

Hello, 

thank you for the bug report and suggested fix. I'd like to recommend to not modify service file provided by the package but create one under /etc/systemd/system . it'll not be overwritten by package update in that case. See https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/chap-managing_services_with_systemd#sect-Managing_Services_with_systemd-Unit_File_Modify for more details

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (cyrus-imapd bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:7651