[CentOS] Running amanda on CentOS 7: "amanda-udp.service failed."

Tue Mar 17 13:03:24 UTC 2020
Robert Heller <heller at deepsoft.com>

I am trying to get amanda backup going on a CentOS 7 system and things are not 
working:

sharky4.deepsoft.com% sudo systemctl start amanda-udp
[sudo] password for heller: 
Job for amanda-udp.service failed because a configured resource limit was exceeded. See "systemctl status amanda-udp.service" and "journalctl -xe" for details.
sharky4.deepsoft.com% sudo systemctl status -l amanda-udp
● amanda-udp.service - Amanda Backup System
   Loaded: loaded (/usr/lib/systemd/system/amanda-udp.service; static; vendor preset: disabled)
   Active: failed (Result: resources)

Mar 17 08:35:58 sharky4.deepsoft.com systemd[1]: Unit amanda-udp.service entered failed state.
Mar 17 08:35:58 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed.
Mar 17 08:43:00 sharky4.deepsoft.com systemd[1]: Got more than one socket.
Mar 17 08:43:00 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed to run 'start' task: Invalid argument
Mar 17 08:43:00 sharky4.deepsoft.com systemd[1]: Failed to start Amanda Backup System.
Mar 17 08:43:00 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed.
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: Got more than one socket.
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed to run 'start' task: Invalid argument
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: Failed to start Amanda Backup System.
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed.
sharky4.deepsoft.com% sudo journalctl -xe
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed to 
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: Failed to start Amanda Backup
-- Subject: Unit amanda-udp.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit amanda-udp.service has failed.
-- 
-- The result is failed.
Mar 17 08:52:24 sharky4.deepsoft.com systemd[1]: amanda-udp.service failed.
sharky4.deepsoft.com% cat /usr/lib/systemd/system/amanda-udp.service
[Unit]
Description=Amanda Backup System
After=local-fs.target

[Service]
User=amandabackup
Group=disk
ExecStart=/usr/sbin/amandad -auth=bsd amdump 
StandardInput=socket

What is missing?

I have installed (stock CentOS 7 from standard repos):

sharky4.deepsoft.com% rpm -qa amanda\*
amanda-server-3.3.3-21.el7.x86_64
amanda-client-3.3.3-21.el7.x86_64
amanda-libs-3.3.3-21.el7.x86_64
amanda-3.3.3-21.el7.x86_64


-- 
Robert Heller             -- 978-544-6933 Cell: 413-658-7953 GV: 978-633-5364
Deepwoods Software        -- Custom Software Services
http://www.deepsoft.com/  -- Linux Administration Services
heller at deepsoft.com       -- Webhosting Services