On 01/31/2011 02:03 PM, Graeme Davis wrote:
On Wed, 2010-11-03 at 13:05 -0500, Craig Carl wrote:
>/ Samuele -
/>/ You don't need to create a client vol file with 3.1. Please
delete
/>/ it from the clients and follow these instructions to mount -
/>/
http://www.gluster.com/community/documentation/index.php/Gluster_3.1:_Manually_Mounting_Volumes
/>/
/
thanks,
but this then lead to a question: how can i provide to a client a pool
of server to use for ha without relying to hearbeat/rhcs or other
cluster suite ? i assumed - correct me if i'm wrong - that by using the
vol file client would be able to go to the next server if one was down .
many thanks
Samuele
I've come across this same issue (I was using vol files thinking they
would tell the client how to mount without relying on one hostname).
For example, I have a test distributed-replicated cluster of 10
servers and 2 client set up. If I have the client set up to "mount -t
glusterfs server1:/volume /mnt/volume" and I take down server1,
everything still works. But if I try and mount server1 again (with
the above command) on another client it will complete the mount
command but then just sit there and hang the machine if you try and do
df or cd into /mnt/volume.
Basically I want to have a reliable way of mounting from clients just
in case a machine tries to mount a Gluster volume when one of the
servers in the cluster is down.
Ideas?
Thanks,
Graeme
This is pretty basic but it works for me. I've written a script to do
the mount for me. It will first test if a server is running before
attempting a mount from that server. If the server isn't running, it
will go on to the next server in the list. Here's the main part of the
script:
server_list="server1 server2"
test_port=24007
# Check if something is already mounted at this mount point.
mountpoint -q /mnt/volume
if [ $? -ne 0 ]; then
for server in $server_list; do
# Test if the server is responding on the first Gluster TCP
port
netcat -z $server $test_port
if [ $? -eq 0 ]; then
mount -tglusterfs $server:/volume /mnt/volume
break
fi
done
fi
Steve
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