[Arm-dev] Network fails Raspberry pi 2

[david]

At 08:40 PM 12/28/2015, you wrote:


>On 12/28/2015 10:01 PM, david wrote:
>>Folks
>>
>>I've been having lots of problems with Centos 7 on Raspberry Pi 2.
>>The network seems to work for a while after a bootstrap, but then 
>>dies.  The command
>>   systemctl restart network
>>always fails.  This occurs after installation and updates.
>>
>>I wonder of others have had this issue, or is my RPI2 defective? 
>>It's connected to my internal network by a wire-connection to a 
>>working Centos 6 gateway.  I posted the results of journalctl 
>>earlier, so won't bother reposting.
>
>No problems on my Cubieboard2:   medon.htt-consult.com that has been 
>up 4 1/2 days.  The only messages on Network that I see are:
>
>messages-20151227:Dec 24 09:46:33 medon NetworkManager[523]: <info>
>nameserver '2001:558:feed::2'
>messages-20151227:Dec 24 09:46:33 medon NetworkManager[523]: <info>
>nameserver '2001:558:feed::1'
>messages-20151227:Dec 24 09:46:33 medon NetworkManager[523]: <info>
>(eth0): DHCPv6 state changed unknown -> bound
>messages-20151227:Dec 24 09:46:33 medon NetworkManager[523]: <info>
>Policy set 'eth0' (eth0) as default for IPv6 routing and DNS.
>messages-20151227:Dec 24 09:46:33 medon NetworkManager[523]: <info>
>(eth0): DHCPv6 client pid 1395 exited with status 0
>messages-20151227:Dec 24 09:46:33 medon NetworkManager[523]: <info>
>(eth0): DHCPv6 state changed bound -> done
>
>which was when I booted it up in my production rack.
>
>
>>
>>Is this the right mail=list to detect if and when the issue is addressed?
>
>Hopefully others with RPi2 will chime in and it will be here.


Robert, and others

In one of those Eureka moments, I believe I understand why my network 
is failing.  Examination of the "journalctl" output led me to the following:
  - Chronyd is a REPLACEMENT for ntp
  - Running both of them at the same time leads to ntpd disabling the 
ethernet link.

If I'm right, perhaps a note should be added into the Arm web page so 
other dummies like me don't make the same mistake.

For extra bonus points, I wonder if someone could answer the question:
- Is it OK to use chrony instead of ntp on Centos 6&7 on i386/x86_64 
systems?  Should I change over?

David