Hello,
I installed VMWare server on a Debian Poweredge 1600sc server a while ago and P2V'd a Windows 2003 SBS server onto it. It normally works fine but now and again the host server loses connection with network. When it happens I can't ping anything by IP or name, but the gateway and IP information looks correct. I'm not sure I've got networking setup correctly. I have 2 NICS in the server, one of which I want the Debian server to use for all it's samba shares and apache hosting, and the other that is just for 1 virtual machine. The Server 2003 guest server has one virtual network card with the IP address 192.168.202.201. I can "fix" the problem by running /etc/init.d/networking restart on the host. The route and ifconfig tables don't change when the network stops working.
Anyone have any advise as to where to start looking? I'm not sure I want to have a bridged network, I'm only going to ever have one virtual machine with one network card using the dedicated NIC eth1. Can anyone tell me if I can set the network up differently without a bridge, or if I've missed something please?
It's running as a bridged connection as per the following:
ifconfig
eth0 Link encap:Ethernet HWaddr 00:c0:9f:13:52:a3
inet addr:192.168.202.202 Bcast:192.168.202.255 Mask:255.255.255.0
inet6 addr: fe80::2c0:9fff:fe13:52a3/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2022962 errors:0 dropped:0 overruns:0 frame:0
TX packets:3254656 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1465851541 (1.3 GiB) TX bytes:3817238458 (3.5 GiB)
eth1 Link encap:Ethernet HWaddr 00:11:95:de:c6:4a
inet addr:192.168.202.203 Bcast:192.168.202.255 Mask:255.255.255.0
inet6 addr: fe80::211:95ff:fede:c64a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3456727 errors:0 dropped:0 overruns:0 frame:0
TX packets:3726559 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2363196447 (2.2 GiB) TX bytes:2330101806 (2.1 GiB)
Interrupt:25
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:5400 errors:0 dropped:0 overruns:0 frame:0
TX packets:5400 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:570123 (556.7 KiB) TX bytes:570123 (556.7 KiB)
vmnet1 Link encap:Ethernet HWaddr 00:50:56:c0:00:01
inet addr:172.16.212.1 Bcast:172.16.212.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:373 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vmnet8 Link encap:Ethernet HWaddr 00:50:56:c0:00:08
inet addr:172.16.123.1 Bcast:172.16.123.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:373 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
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
172.16.212.0 * 255.255.255.0 U 0 0 0 vmnet1
localnet * 255.255.255.0 U 0 0 0 eth0
localnet * 255.255.255.0 U 0 0 0 eth1
172.16.123.0 * 255.255.255.0 U 0 0 0 vmnet8
default 192.168.202.254 0.0.0.0 UG 0 0 0 eth0
/etc/network/interfaces
The loopback network interface
auto lo
iface lo inet loopback
The primary network interface
allow-hotplug eth0
auto eth0
iface eth0 inet static
address 192.168.202.202
netmask 255.255.255.0
network 192.168.202.0
broadcast 192.168.202.255
gateway 192.168.202.254
dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.202.201 192.168.202.202 192.168.202.254
dns-search domain.local
up ethtool -s eth0 speed 1000 duplex full
auto eth1
iface eth1 inet static
address 192.168.202.203
netmask 255.255.255.0
network 192.168.202.0
broadcast 192.168.202.255
I get the following errors in the logs below when it loses network connection:
syslog
Sep 28 17:29:34 servertron ntpd[3623]: kernel time sync status change 0001
Sep 28 17:39:01 servertron /USR/SBIN/CRON[5575]: (root) CMD ( && && find /var/lib/php5/ -type f -cmin$
Sep 28 17:45:34 servertron /USR/SBIN/CRON[5594]: (root) CMD (curl --silent --compressed http://www.asite.com/cron.php)
Sep 28 17:45:41 servertron named[2616]: network unreachable resolving 'ns.webfusion.co.uk/AAAA/IN': 2001:630:181:35::83#53
Sep 28 17:45:41 servertron named[2616]: network unreachable resolving 'ns2.webfusion.co.uk/AAAA/IN': 2001:630:181:35::83#53
Sep 28 17:45:41 servertron named[2616]: network unreachable resolving 'ns.webfusion.co.uk/AAAA/IN': 2a01:40:1001:35::2#53
Sep 28 17:45:41 servertron named[2616]: network unreachable resolving 'ns2.webfusion.co.uk/AAAA/IN': 2a01:40:1001:35::2#53
daemon.log
Sep 28 16:04:09 servertron ntpd[3623]: synchronized to 192.168.202.201, stratum 3
Sep 28 16:04:09 servertron ntpd[3623]: kernel time sync status change 4001
Sep 28 17:29:34 servertron ntpd[3623]: kernel time sync status change 0001
Sep 28 17:45:41 servertron named[2616]: network unreachable resolving 'ns.webfusion.co.uk/AAAA/IN': 2001:630:181:35::83#53
Sep 28 17:45:41 servertron named[2616]: network unreachable resolving 'ns2.webfusion.co.uk/AAAA/IN': 2001:630:181:35::83#53