[Bug 1558196] Re: ypbind not able to socket activate rpcbind under systemd, fails at boot unless something else starts rpcbind

[Dan Streetman]

autopkgtest note: nfs-utils(s390x) fails, but appears to have always failed; the test runs that 'passed' back in 2017 just skipped the now-failing testcase due to lack of machine isolation back then:
"local-server-client  SKIP Test requires machine-level isolation but testbed does not provide that"

so that autopkgtest failure can be ignored as unrelated to this.

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https://bugs.launchpad.net/bugs/1558196

Title:
  ypbind not able to socket activate rpcbind under systemd, fails at
  boot unless something else starts rpcbind

Status in nis package in Ubuntu:
  Fix Released
Status in rpcbind package in Ubuntu:
  Fix Released
Status in nis source package in Xenial:
  Invalid
Status in rpcbind source package in Xenial:
  Fix Committed
Status in nis package in Debian:
  Fix Released

Bug description:
  [Impact]

  Due to a missing "WantedBy" directive in the .service file's [Install]
  section, rpcbind does not properly start when the system is booted,
  which can lead to problems if the user needs to mount some NFS
  locations on boot time.

  [Test Case]

  To reproduce the issue, one can do:

  $ lxc launch images:ubuntu/xenial bug1558196-rpcbind --vm
  $ lxc shell bug1558196-rpcbind
  # apt update
  # apt install rpcbind -y
  # systemctl enable rpcbind.service
  # reboot

  After the reboot, you can confirm that the service is not running:

  # systemctl status rpcbind.service
  ● rpcbind.service - RPC bind portmap service
     Loaded: loaded (/lib/systemd/system/rpcbind.service; indirect; vendor preset: enabled)
    Drop-In: /run/systemd/generator/rpcbind.service.d
             └─50-rpcbind-$portmap.conf
     Active: inactive (dead)

  [Regression Potential]

  There is virtually no regression potential with this bug, aside from
  the regular "we will rebuild this package against newer versions of
  dependencies, which can introduce unwanted bugs".  The fix is
  extremely simple and self-contained, and just guarantees that the
  package will start normally during boot time.

  [Original Description]

  did apt-get update/upgrade  March 16, 2016
  Description:    Ubuntu Xenial Xerus (development branch)
  Release:        16.04

  rpcbind does not start on boot, tried various systemd debugging steps
  with no clues. After boot systemctl start rpcbind works. There is  a
  /etc/init.d/rpcbind and a /lib/systemd/system/rpcbind.service config
  files which is confusing.

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