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--- cluster:102 [2011/06/29 11:21]
hmeij
+++ cluster:102 [2011/06/29 11:59]
hmeij
@@ Line 48: / Line 48: @@
 </code>
-So in order to for the compute node b1 to reach the flexstorage server we need to use NAT rules and define a path/route.  First we start on petaltail and edit the iptables files and add a "nat filter" and in the "filter filter" set up rules for forwarding and post routing.
+So in order to for the compute node b1 to reach the flexstorage server we need to use NAT rules and define a path/route.  First we start on petaltail and edit the iptables file and add a "nat filter" masquerade/post routing directives and in the "filter filter" set up a rule connecting eth1 and eth2.
 <code>
@@ Line 65: / Line 65: @@
 </code>
-Next
+Next, on the compute nodes we need to add routing path and then mount the file system (using an IP because there is no name resolving).  These commands are stuck in /etc/rc.local for persistence.
+<code>
+# /etc/rc.local
+route add -host 129.133.24.81 gw  10.10.100.217 eth1
+mount 129.133.24.81:/share/dlbgroup /home/dlbgroup -t nfs -o soft,intr,bg
+[root@b1 ~]# df -h /home/dlbgroup
+Filesystem            Size  Used Avail Use% Mounted on
+.133.24.81:/share/dlbgroup
+G  588G  413G  59% /home/dlbgroup
+</code>
+There is ofcourse a penalty in performance doing this.
+<code>
+[root@petaltail ~]#  time dd if=/dev/zero of=/home/dlbgroup/foo bs=1024 count=1000000
+1000000+0 records in
+1000000+0 records out
+1024000000 bytes (1.0 GB) copied, 107.961 seconds, 9.5 MB/s
+real    1m47.964s
+user    0m0.322s
+sys     0m2.094s
+[root@b1 ~]# time dd if=/dev/zero of=/home/dlbgroup/foo bs=1024 count=1000000
+1000000+0 records in
+1000000+0 records out
+1024000000 bytes (1.0 GB) copied, 110.017 seconds, 9.3 MB/s
+real    1m50.027s
+user    0m0.271s
+sys     0m4.073s
+</code>
 \\
 **[[cluster:0|Back]]**

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