On Fri, Jan 13, 2006 at 06:19:01PM -0600, John Alberts wrote:
> Hi all. I'm using vserver on a Gentoo machine. I originally tried to
> get some help on the gentoo-vserver irc channel; however, I think we
> must all have opposite schedules.
>
> Anyway, I am using Gentoo for my host machine and also Gentoo as the
> guest os. The guest os runs Apache2 and MySQL and it works well for
> a while (5, 6 hours). After a while I am unable to connect to the
> guest os. From the host os, I can reach the guest os (ping, browse
> web page using links, etc), but not from outside the host os. If I go
> into the guest os using vserver myguest enter, the only fqdn i can
> ping is the one for the host os the is in my hosts file. No other
> fqdn's work. If I ping a known working ip address, everything starts
> working again! I have no idea what this means or how to fix it. As a
> temporary solution, just to keep my guest os working, I put a cron job
> that pings 2 different servers every half hour. I think it's probably
> a routing problem, but I'm not sure what to do. My host has 2 gigabit
> nics, both on the same subnet.
>
> Here is my ifconfig -a and route from my host os: (route hangs a while
> and then finally prints the output below)
>
> -----------
> ifconfig -a
>
> eth0 Link encap:Ethernet HWaddr 00:04:23:C3:C4:FE
> inet addr:205.215.68.74 Bcast:0.0.0.0 Mask:255.255.255.0
~~~~~~~~~~ this is wrong
> inet6 addr: fe80::204:23ff:fec3:c4fe/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:929466 errors:0 dropped:0 overruns:0 frame:0
> TX packets:981291 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:255987202 (244.1 Mb) TX bytes:1085603257 (1035.3 Mb)
> Base address:0xecc0 Memory:df9e0000-dfa00000
>
> eth0:100 Link encap:Ethernet HWaddr 00:04:23:C3:C4:FE
> inet addr:205.215.68.100 Bcast:205.215.68.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
> Base address:0xecc0 Memory:df9e0000-dfa00000
>
> eth1 Link encap:Ethernet HWaddr 00:04:23:C3:C4:FF
> inet addr:205.215.68.75 Bcast:0.0.0.0 Mask:255.255.255.0
~~~~~~~~~~ and this too
> inet6 addr: fe80::204:23ff:fec3:c4ff/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:82354 errors:0 dropped:0 overruns:0 frame:0
> TX packets:54663 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:8731671 (8.3 Mb) TX bytes:71564782 (68.2 Mb)
> Base address:0xec80 Memory:df9c0000-df9e0000
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> inet6 addr: ::1/128 Scope:Host
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:28411 errors:0 dropped:0 overruns:0 frame:0
> TX packets:28411 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:57095159 (54.4 Mb) TX bytes:57095159 (54.4 Mb)
>
> sit0 Link encap:IPv6-in-IPv4
> NOARP MTU:1480 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
>
> route
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 205.215.68.0 * 255.255.255.0 U 0 0 0 eth0
> 205.215.68.0 * 255.255.255.0 U 0 0 0 eth1
> loopback * 255.0.0.0 U 0 0 0 lo
> default 205.215.68.254 0.0.0.0 UG 0 0 0 eth0
> default 205.215.68.254 0.0.0.0 UG 0 0 0 eth1
this doesn't work as you might expect, it will leave
only one interface half working ...
you are probably looking for bonding, so this might
help you a little:
http://www.kernel.org/pub/linux/kernel/people/marcelo/linux-2.4/Documentation/networking/bonding.txt
http://www.howtoforge.com/nic_bonding
> --------
>
> Here is the ifconfig -a and route from inside my guest os:
> ----------
> ifconfig -a
> eth0 Link encap:Ethernet HWaddr 00:04:23:C3:C4:FE
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:929890 errors:0 dropped:0 overruns:0 frame:0
> TX packets:981291 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:256023685 (244.1 Mb) TX bytes:1085603257 (1035.3 Mb)
> Base address:0xecc0 Memory:df9e0000-dfa00000
>
> eth0:100 Link encap:Ethernet HWaddr 00:04:23:C3:C4:FE
> inet addr:205.215.68.100 Bcast:205.215.68.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:929890 errors:0 dropped:0 overruns:0 frame:0
> TX packets:981291 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:256023685 (244.1 Mb) TX bytes:1085603257 (1035.3 Mb)
> Base address:0xecc0 Memory:df9e0000-dfa00000
>
> route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 205.215.68.0 * 255.255.255.0 U 0 0 0 eth0
> 205.215.68.0 * 255.255.255.0 U 0 0 0 *
> loopback * 255.0.0.0 U 0 0 0 *
> default 205.215.68.254 0.0.0.0 UG 0 0 0 eth0
> default * 0.0.0.0 UG 0 0 0 *
yep, as expected, only one of the two gateway pathes
is reachable from inside, the one via eth0 ...
HTH,
Herbert
> --------------
>
> Thanks in advance for any help.
>
> John
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