philipprince
October 29th, 2010, 11:06 AM
Dear All,
I am constructing a UEC private cloud within my local network 192.168.123.0 (Gateway and DNS server are both 192.168.123.1). I cannot communicate from the NC on 192.168.20.2 out to the DNS server (or anywhere else outside of 192.168.20.X).
I am not clever so I have been scrupulously following steps in the Eucalyptus Beginner's Guide - UEC Edition while using the installation wizard for Ubuntu 10.10 Server (AMD64).
The configuration is intended to look like:
CLC (192.168.123.151)
<-> switch1 <->
CC (eth0:192.168.123.152,eth1:192.168.20.1)
<-> switch2 <->
NC (eth1:192.168.20.2)
I can ping the CLC from the CC, the NC from the CC, the CC from the NC but I cannot ping anywhere else from the NC.
The CLC interface is:
auto eth0
iface eth0 inet static
address 192.168.123.151
netmask 255.255.255.0
network 192.168.123.0
broadcast 192.168.123.255
gateway 192.168.123.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.123.1
dns-search oxil.co.uk
There is a switch between CLC and CC.
The CC interface is:
auto eth0
iface eth0 inet static
address 192.168.123.152
netmask 255.255.255.0
network 192.168.123.0
broadcast 192.168.123.255
gateway 192.168.123.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.123.1
dns-search oxil.co.uk
auto eth1
iface eth1 inet static
address 192.168.20.1
netmask 255.255.255.0
network 192.168.20.0
broadcast 192.168.20.255
There is a different switch between CC and NC.
The NC interface is:
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address 192.168.20.2
netmask 255.255.255.0
network 192.168.20.0
broadcast 192.168.20.255
gateway 192.168.20.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.123.1
dns-search oxil.co.uk
bridge_ports eth0
bride_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off
In resolv.conf:
search oxil.co.uk
nameserver 192.168.123.1
A colleague suggests that the iptables have not been configured to pass traffic through the CC to the outer world.
On the CC "cat /proc/sys/net/ipv4/ip_forward" yields 1. It is at this point that I have stopped as I am reluctant to change iptable settings without any understanding.
Where should I go next?
Many thanks,
Philip
I am constructing a UEC private cloud within my local network 192.168.123.0 (Gateway and DNS server are both 192.168.123.1). I cannot communicate from the NC on 192.168.20.2 out to the DNS server (or anywhere else outside of 192.168.20.X).
I am not clever so I have been scrupulously following steps in the Eucalyptus Beginner's Guide - UEC Edition while using the installation wizard for Ubuntu 10.10 Server (AMD64).
The configuration is intended to look like:
CLC (192.168.123.151)
<-> switch1 <->
CC (eth0:192.168.123.152,eth1:192.168.20.1)
<-> switch2 <->
NC (eth1:192.168.20.2)
I can ping the CLC from the CC, the NC from the CC, the CC from the NC but I cannot ping anywhere else from the NC.
The CLC interface is:
auto eth0
iface eth0 inet static
address 192.168.123.151
netmask 255.255.255.0
network 192.168.123.0
broadcast 192.168.123.255
gateway 192.168.123.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.123.1
dns-search oxil.co.uk
There is a switch between CLC and CC.
The CC interface is:
auto eth0
iface eth0 inet static
address 192.168.123.152
netmask 255.255.255.0
network 192.168.123.0
broadcast 192.168.123.255
gateway 192.168.123.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.123.1
dns-search oxil.co.uk
auto eth1
iface eth1 inet static
address 192.168.20.1
netmask 255.255.255.0
network 192.168.20.0
broadcast 192.168.20.255
There is a different switch between CC and NC.
The NC interface is:
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address 192.168.20.2
netmask 255.255.255.0
network 192.168.20.0
broadcast 192.168.20.255
gateway 192.168.20.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.123.1
dns-search oxil.co.uk
bridge_ports eth0
bride_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off
In resolv.conf:
search oxil.co.uk
nameserver 192.168.123.1
A colleague suggests that the iptables have not been configured to pass traffic through the CC to the outer world.
On the CC "cat /proc/sys/net/ipv4/ip_forward" yields 1. It is at this point that I have stopped as I am reluctant to change iptable settings without any understanding.
Where should I go next?
Many thanks,
Philip