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RE: [K12OSN] You can't have LTSP and network too



Not a dumb question... eth0 is the one for the thin clients.  eth1 is for
the rest of the network (internet).

Recognize that I've now done two complete installs with the same result...
one with eth0 getting DHCP, one with eth0 statically assigned.  In both
installs, as soon as the BRIDGE is made, all networking goes south.

Have now also done two installs of K12LTSP CentOS5EL, using the same as
above, and they both worked perfectly throughout.  The problem is with the
Fedora9 install.  My next lab test is to install F9, but this time swap the
interfaces around - have eth0 be for internet, eth1 be for the clients, and
we'll see if that makes a difference.

-Mike Rathburn
 Children First Florida
 

> 
> Umm, dumb question. Which network card is on the LAN/vLAN 
> facing the clients and which is on your main network. What is 
> your network topology?
> 
> 
> On Nov 18, 2008, at 8:46 AM, Mike Rathburn wrote:
> 
> > I've run into the same problem, although I wasn't even able 
> to get a 
> > 1420 PXE to get a DHCP assignment.  This is related to my 
> earlier post 
> > "New Fedora9 Installation and Networking".  I wanted to go 
> through a 
> > reinstall to make sure I wasn't losing my mind.
> >
> > Installed F9 with two interfaces - eth0 set to DHCP, eth1 set to 
> > static.  Went through the instructions as posted in the wikki, but 
> > here's an overview of the steps done for clarity:
> >
> > After F9 install with reboot, eth0 got DHCP address 192.168.1.117,
> > eth1 is statically set to 192.168.1.25.  NetworkManager is 
> on, but the
> > eth1 network interface was inactive.  Networking was only working 
> > through eth0.  Had to do 'chkconfig network on' to get the 
> two network 
> > interfaces to activate on startup.  Rebooted.  Networking 
> is working 
> > fine for both interfaces.
> >
> > yum install ltsp-server
> > Rebooted.
> > yum install ltsp-vmclient
> > Uncommented the option_cache_value line in /etc/ltsp/ltsp-build- 
> > client.conf echo "/opt/ltsp *(ro,async,no_root_squash)" >> 
> > /etc/exports ifup ltspbr0 chkconfig network on Rebooted.
> > for service in xinetd ltsp-dhcpd rpcbind nfs sshd; do chkconfig 
> > $service on; service $service restart; done for server in ldminfod 
> > nbdrootd nbdswapd tftp; do chkconfig $server on; done 
> > ltsp-build-client Rebooted.
> > Verifed dhcp is running via pgrep dhcpd Stopped the firewall via 
> > service iptables stop Added BRIDGE=ltspbr0 to 
> > /etc/sysconfig/network-scripts/ifcfg-eth0
> > Did service network restart
> > **** LOST NETWORK CONNECTION! ****
> >
> > Now I can't just paste the output of ifconfig because I 
> don't have a 
> > network connection.  However, ifconfig shows that eth0 doesn't have 
> > any address info, so it's inactive.  eth1 has inet address of 
> > 192.168.1.25/255.255.255.0, as it should.  ltspbr0 has inet 
> address of 
> > 172.31.100.254/255.255.255.0, bound to the hardware address of eth0.
> >
> > I did chkconfig --list network, and 2,3,4,5 are on as they 
> should be.
> >
> > My route -n shows:
> >
> > Dest                 GW                 Mask                   Iface
> > 192.168.1.0       0.0.0.0            255.255.255.0       eth1
> > 172.31.100.0     0.0.0.0            255.255.255.0       ltspbr0
> > 169.254.0.0       0.0.0.0            255.255.0.0          ltspbr0
> > 0.0.0.0              192.168.1.1     0.0.0.0                 eth1
> >
> > ifcfg-eth0 has:
> > DEVICE=eth0
> > BOOTPROTO=dhcp
> > HWADDR=00:1a:a0:33:03:60
> > ONBOOT=yes
> > DHCP_HOSTNAME=ltsp.childrenfirstflorida.org
> > DNS1=192.168.1.1
> > SEARCH='childrenfirstflorida.org'
> > NM_CONTROLLED=no
> > TYPE=Ethernet
> > BRIDGE=ltspbr0
> >
> > ifcfg-eth1 has:
> > DEVICE=eth1
> > BOOTPROTO=none
> > BROADCAST=192.168.1.255
> > HWADDR=00:14:d1:15:4e:39
> > IPADDR=192.168.1.25
> > IPV6INIT=yes
> > IPV6_AUTOCONF=yes
> > NETMASK=255.255.255.0
> > NETWORK=192.168.1.0
> > ONBOOT=yes
> > DNS1=192.168.1.1
> > SEARCH='childrenfirstflorida.org'
> > NM_CONTROLLED=no
> > GATEWAY=192.168.1.1
> > TYPE=Ethernet
> > USERCTL=no
> > PEERDNS=yes
> >
> > ifcfg-ltspbr0 has:
> > DEVICE=ltspbr0
> > TYPE=Bridge
> > ONBOOT=yes
> > BOOTPROTO=static
> > STP=off
> > DELAY=0.1
> > USERCTL=no
> > IPV6INIT=no
> > PEERDNS=yes
> > NETMASK=255.255.255.0
> > IPADDR=172.31.100.254
> > ARP=yes
> >
> > Now, cruising on into the GUI, System -> Administration -> 
> Network is 
> > showing eth0 inactive, eth1 and ltspbr0 both active.  The 
> > NetworkManager icon is showing no connections to manage.  
> Services -> 
> > network is enabled and started.  dhcpd is shown as disabled, but is 
> > started.  iptables is enabled, but is stopped.  ltsp-dhcpd 
> is enabled 
> > and started.
> >
> > So, again, what have I missed?
> >
> > Thanks!


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