similar to: ssh failure from CentOS7 to Centos6

On Mon, 13 Jan 2020 at 12:23, Patrick B?gou <Patrick.Begou at legi.grenoble-inp.fr> wrote: > > Hi, > > I have a strange problem with a freshly installed Centos7 desktop > (most8pc25). I can't ssh to 2 CentOS6 servers, even with firewall > disabled on the client and on the server. But I can connect from the > server to the client, all in the same VLAN. I can also ssh

On Mon, Jan 13, 2020 at 01:00:05PM -0500, Stephen John Smoogen wrote: > On Mon, 13 Jan 2020 at 12:23, Patrick B?gou > <Patrick.Begou at legi.grenoble-inp.fr> wrote: > > > > Hi, > > > > I have a strange problem with a freshly installed Centos7 desktop > > (most8pc25). I can't ssh to 2 CentOS6 servers, even with firewall > > disabled on the client

Hi, I need some help with NFSv4 setup/tuning. I have a dedicated nfs server (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x 8TB HDD) used by two servers and a small cluster (400 cores). All the servers are running CentOS 7, the cluster is running CentOS6. Time to time on the server I get: ?kernel: NFSD: client xxx.xxx.xxx.xxx testing state ID with incorrect

Le 12/05/2020 ? 16:10, James Pearson a ?crit?: > Patrick B?gou wrote: >> >> Hi, >> >> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >> (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x >> 8TB HDD) used by two servers and a small cluster (400 cores). All the >> servers are running CentOS 7, the cluster is

Patrick B?gou wrote: > > Hi, > > I need some help with NFSv4 setup/tuning. I have a dedicated nfs server > (2 x E5-2620 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x > 8TB HDD) used by two servers and a small cluster (400 cores). All the > servers are running CentOS 7, the cluster is running CentOS6. > > Time to time on the server I get: > >

> Le 12/05/2020 ? 16:10, James Pearson a ?crit?: >> Patrick B?gou wrote: >>> >>> Hi, >>> >>> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >>> (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x >>> 8TB HDD) used by two servers and a small cluster (400 cores). All the >>> servers

On 5/12/20 2:46 AM, Patrick B?gou wrote: > Hi, > > I need some help with NFSv4 setup/tuning. I have a dedicated nfs server > (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x > 8TB HDD) used by two servers and a small cluster (400 cores). All the > servers are running CentOS 7, the cluster is running CentOS6. > > Time to time on the server I get:

On 6/1/20 3:08 AM, Patrick B?gou wrote: > Le 13/05/2020 ? 02:13, Orion Poplawski a ?crit?: >> On 5/12/20 2:46 AM, Patrick B?gou wrote: >>> Hi, >>> >>> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >>> (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x >>> 8TB HDD) used by two servers and a small

Le 13/05/2020 ? 15:36, Patrick B?gou a ?crit?: > Le 13/05/2020 ? 07:32, Simon Matter via CentOS a ?crit?: >>> Le 12/05/2020 ? 16:10, James Pearson a ?crit?: >>>> Patrick B?gou wrote: >>>>> Hi, >>>>> >>>>> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >>>>> (2 x E5-2620? 8cores/16 threads

Hi Barbara, Thanks for all these suggestions. Yes, jumbo frames are activated and I have only two 10Gb ethernet switch between the server and the client, connected with a monomode fiber. I saw yesterday that the client showing the problem had not the right MTU (1500 instead of 9000). I don't know why. I changed the MTU to 9000 yesterday and I'm looking at the logs now to see if the

Le 13/05/2020 ? 07:32, Simon Matter via CentOS a ?crit?: >> Le 12/05/2020 ? 16:10, James Pearson a ?crit?: >>> Patrick B?gou wrote: >>>> Hi, >>>> >>>> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >>>> (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x >>>> 8TB HDD) used by two

Hi Orion, no, I still have this problem. I delay working on it as I the latest updates have not been installed on the server and on the client. I'll work again on this problem as soon as possible. Thanks Charles for your detailed information on how to track this problem. I'll check all these metrics. I have several clients for this nfs server and the problem seems only to occur from the

Le 13/05/2020 ? 02:13, Orion Poplawski a ?crit?: > On 5/12/20 2:46 AM, Patrick B?gou wrote: >> Hi, >> >> I need some help with NFSv4 setup/tuning. I have a dedicated nfs server >> (2 x E5-2620? 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x >> 8TB HDD) used by two servers and a small cluster (400 cores). All the >> servers are running CentOS 7, the

The number of threads has nothing to do with the number of cores on the machine. It depends on the I/O, network speed, type of workload etc. We usually start with 32 threads and increase if necessary. You can check the statistics with: watch 'cat /proc/net/rpc/nfsd | grep th? Or you can check on the client nfsstat -rc Client rpc stats: calls retrans authrefrsh 1326777974 0

Thank you very much. Previously, when I examined rquotad, I did not work as I expected. I will try to verify again. Best regard. koji On Mon, 3 Apr 2017 11:31:24 +0200 Patrick Begou <Patrick.Begou at legi.grenoble-inp.fr> wrote: > man rquotad: > > rquotad is an rpc(3) server which returns quotas for a user of a local > filesystem which is mounted by a remote

man rquotad: rquotad is an rpc(3) server which returns quotas for a user of a local filesystem which is mounted by a remote machine over the NFS. It also allows setting of quotas on NFS mounted filesystem (if configured dur- ing compilation and allowed by a command line option -S).... etc Seams to be also possible to set quotas from the client, but I never use it.

Akemi Yagi wrote: > On Fri, Mar 25, 2016 at 9:57 AM, Patrick Begou < > Patrick.Begou at legi.grenoble-inp.fr> wrote: > >> I'm very confused on the right step to use to setup a modified kernel in >> centOS6. >> >> As a simple user, I've downloaded the latests sources (I'm runing an old >> kernel version) : >> >> rpm -i >>

Dear Akemi, I'm really ashamed, in "https://wiki.centos.org/HowTos/I_need_the_Kernel_Source" I've missed the last 5 lines following the CentOS5 section. All is now clear for me on the process to follow to build a new kernel from source rpm and the CONFIG_NUMA_EMU option is active. I've set it with make menuconfig to avoid some additional mistakes in the config file.

helow my goal is to install via kickstart a CentOS 7 NFS server but I fail to set the firewall rules at installation time. In my kickstart file I set: # Firewall configuration # ssh and NFS # Ports 111 and 875 are for rquotad firewall --enabled --ssh --service=nfs --port=111:tcp,111:upd,875:tcp,875:upd On the installed server,? /root/anaconda-ks.cfg contains: # Firewall configuration firewall

I've moved most of my user's PCs from OpenSuse (11.x, unmaintainend now) to CentOS 6.4. On my old OpenSuse latex was "texlive-latex-2010" and current version on CTAN is texlive-2013. But on CentOS 6.4 I've only the old texlive-latex-2007 and several sty files available on my previous config are not available now and users cannot compile their previous documents. Is