On my diskless cluster, I want to open a port on the image that nodes use it.
Here is what I get:
root@server:~# chroot /home/nfsroot/
root@server:/# iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 4949 -j ACCEPT
iptables v1.4.4: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
root@server:/# uname -a
Linux server 2.6.32-24-server #39-Ubuntu SMP Wed Jul 28 06:21:40 UTC 2010 x86_64 GNU/Linux
First I chroot to /home/nfsroot where I installed the ubuntu image for nodes. Any suggestion on that?