On Fri, 13 May 2011, Paul N wrote:
On Thu, May 12, 2011 at 3:30 PM, Ben <[email protected]> wrote:
On Thu, 12 May 2011, Dmitry Makovey wrote:
we have some weird problem with EL6 box which serves as a KVM host for 3
VMs currently. It shares the same interface with all 3 VMs (same network).
All works, except from time to time machine behaves very slow in console
(ok, SSH connection) and it happens only from time to time.
[...]
It may be unconnected but I have a RHEL6 box which also occasionally has
an issue with slow SSH connection. By that I mean you type "ssh
rhel6host", the password prompt comes up quickly, but after entering the
password and hitting return there's a palpable delay (sometimes) before
the prompt appears. Not every time, but often. Sometimes as long as
four to five seconds. A RHEL6 KVM guest I installed on it also has the
same issue (sometimes). I've run ssh with -vvv and sshd with -vvv and
not seen anything untoward. DNS is on the local LAN and reports no
issues either. All connections are from RHEL5 hosts. Just somtimes
connection is... slow.
I've seen the problem you've described when I have a bogus entry for
localhost (or an incorrect IP address for the server's FQDN) in
/etc/hosts. YYMV of course!
/etc/hosts:
10.1.1.158 knife.internal.admin.cam.ac.uk knife # Added by
NetworkManager
127.0.0.1 localhost.localdomain localhost
::1 knife.internal.admin.cam.ac.uk knife localhost6.localdomain6
localhost6
Ben
--
Unix Support, MISD, University of Cambridge, England
Plugger of wire, typer of keyboard, imparter of Clue
Life Is Short. It's All Good.
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