Description of problem:
If Network Manager is not installed then services that want to listen on explicitly configured IP addresses are unable to start. Those services (including sshd, apache and others) depend on network.target and they fail because they're unable to bind to chosen IP addresses. There is an easy workaround for it:
systemctl add-wants multi-user.target network.target
Version-Release number of selected component (if applicable):
systemd-219-30.el7_3.6.x86_64
How reproducible:
100%
Steps to Reproduce:
1. Make sure Network Manager is uninstalled.
2. In case of sshd, make sure this is in place:
ListenAddress 10.20.30.10 - any IP configured on the system would do
3. Boot the system
Actual results:
During system boot we see this:
sshd[423]: error: Bind to port 22 on 10.20.30.10 failed: Cannot assign requested address.
Expected results:
sshd and other services that use similar config to start fine
Additional info:
The issue is caused by missing dependancies and fix is already coded here:
https://github.com/systemd/systemd/pull/5652/files
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, 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-2017:2297