[CentOS] Corosync on a home network

2017-09-10 Thread J Martin Rushton
I've been trying to build a model cluster using three virtual machines on my home server. Each VM boots off its own dedicated partition (CentOS 7.3). One partition is designated to be the common /home partition for the VMs, (on the real machine it will mount as /cluster). I'm intending to run GFS

Re: [CentOS] Corosync on a home network

2017-09-10 Thread Steven Tardy
> On Sep 10, 2017, at 11:33 AM, J Martin Rushton > wrote: > > #mcastport: 5405 Does tcpdump see this traffic leaving each VM? Yes then the app is working. Does tcpdump see this traffic making it to each VM? Yes then the switching is working. Is the port opened in firewall/iptables? Yes

[CentOS] centos-7.4 elfutils

2017-09-10 Thread Jack Bailey
Hello, I'm taking 7.4 for a spin.  I did the minimal install, and ran into trouble with groupinstall base.  The trouble seems to stem from elfutils.  One command claims elfutils-libs-0.166-2.el7.x86_64 is missing, and another one claims it's installed.  Not sure what's going on here. [root@

Re: [CentOS] Flush memory on a server?

2017-09-10 Thread Gordon Messmer
On 09/09/2017 07:06 PM, Keith Keller wrote: As long as your system isn't thrashing swap it's totally fine. From what you've written it doesn't sound like you're thrashing. I should have mentioned earlier:  Run "vmstat 1" and watch the "si" and "so" columns to watch paging activity. _

[CentOS] systemctl poweroff

2017-09-10 Thread Nicolas Kovacs
Hi, I've been using CentOS since versions 4.x, and I see a weird trend in recent Linux distributions. Under CentOS 4.x, 5.x and 6.x, shutting down a server (workstation, laptop) simply meant issuing 'shutdown -h now' (or choosing 'Shutdown' from the GUI menu), and the machine would simply shut do