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Re: NetworkManager.service: Start request repeated too quickly




On Thu, 17 May 2018 19:34:30 -0400
Dan Norton <dnorton@xxxxxxxxxxxxxx> wrote:

> In trying to get DNS working on a minimal install of Debian 9.4, by
> copying things from a working system, I run into this:
> 
> # systemctl status NetworkManager
> ● NetworkManager.service - Network Manager
>    Loaded: loaded (/lib/systemd/system/NetworkManager.service;
> enabled; vendor preset: enabled) Active: failed (Result: exit-code)
> since Thu 2018-05-17 18:05:21 EDT; 1min 19s ago Docs:
> man:NetworkManager(8) Process: 571 ExecStart=/usr/sbin/NetworkManager
> --no-daemon (code=exited, status=127) Main PID: 571 (code=exited,
> status=127)
> 
> May 17 18:05:20 debm systemd[1]: NetworkManager.service: Unit entered
> failed state. May 17 18:05:20 debm systemd[1]: NetworkManager.service:
> Failed with result 'exit-code'. May 17 18:05:21 debm systemd[1]:
> NetworkManager.service: Service hold-off time over, scheduling
> restart. May 17 18:05:21 debm systemd[1]: Stopped Network Manager.
> May 17 18:05:21 debm systemd[1]: NetworkManager.service: Start request
> repeated too quickly. May 17 18:05:21 debm systemd[1]: Failed to start
> Network Manager. May 17 18:05:21 debm systemd[1]:
> NetworkManager.service: Unit entered failed state. May 17 18:05:21
> debm systemd[1]: NetworkManager.service: Failed with result
> 'exit-code'.
> 

More searching in the output of "journalctl -xe" turns up:

debm NetworkManager[583]: /usr/sbin/NetworkManager: error while loading
shared libraries: libjansson.so.4: cannot open shared object file: No
such file or directory

In another (non-minimal) system with a working DNS:

root@debU:~# apt search libjansson
[snip]
libjansson4/stable,now 2.9-1 amd64 [installed,automatic] 
C library for encoding, decoding and manipulating JSON data

Says it's installed but where? Running "whereis" turns up nothing.