Hello,
I have a big problem with my servers.
I have 4 NIC on all my KVM Servers but the most time on a start (restart) I lost one NIC? It is not always the same, but this two are virtio NICs.
with ifup eth0(1) the system say,I have no configured eth0 or eth1 file ?
Can any tell me what I can do?
thank's for a answer
NetworkManager is disabled.
On 12/11/2015 06:04 AM, Günther J. Niederwimmer wrote:
I have 4 NIC on all my KVM Servers but the most time on a start (restart) I lost one NIC? It is not always the same, but this two are virtio NICs.
with ifup eth0(1) the system say,I have no configured eth0 or eth1 file ?
You haven't given us much to go on. The output of these commands might be helpful:
lspci "ip addr show" or "ifconfig -a" dmesg | grep -i eth ls -l /etc/sysconfig/network/ifcfg-eth* cat /etc/sysconfig/network/ifcfg-eth*
Hello Am Friday 11 December 2015, 10:13:00 schrieb Gordon Messmer:
On 12/11/2015 06:04 AM, Günther J. Niederwimmer wrote:
I have 4 NIC on all my KVM Servers but the most time on a start (restart) I lost one NIC? It is not always the same, but this two are virtio NICs.
with ifup eth0(1) the system say,I have no configured eth0 or eth1 file ?
You haven't given us much to go on. The output of these commands might be helpful:
lspci "ip addr show" or "ifconfig -a" dmesg | grep -i eth ls -l /etc/sysconfig/network/ifcfg-eth* cat /etc/sysconfig/network/ifcfg-eth*
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
lspci;
-00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02) 00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] 00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] 00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03) 00:02.0 VGA compatible controller: Red Hat, Inc. QXL paravirtual graphic card (rev 04) 00:03.0 Ethernet controller: Red Hat, Inc Virtio network device 00:04.0 Ethernet controller: Red Hat, Inc Virtio network device 00:05.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 01) 00:06.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03) 00:06.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03) 00:06.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03) 00:06.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03) 00:07.0 Communication controller: Red Hat, Inc Virtio console 00:08.0 SCSI storage controller: Red Hat, Inc Virtio block device 00:09.0 SCSI storage controller: Red Hat, Inc Virtio block device 00:0a.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon 00:0b.0 Ethernet controller: Intel Corporation I350 Ethernet Controller Virtual Function (rev 01) 00:0c.0 Ethernet controller: Intel Corporation I350 Ethernet Controller Virtual Function (rev 01)
ifconfig;
ens12: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 fe80::5054:ff:fe81:e89 prefixlen 64 scopeid 0x20<link> inet6 2001:15c0:xxxx:xxxx::xxxx prefixlen 64 scopeid 0x0<global> ether 52:54:00:81:0e:89 txqueuelen 1000 (Ethernet) RX packets 229 bytes 20108 (19.6 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 140 bytes 12736 (12.4 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.xxx.xxx netmask 255.255.255.0 broadcast 192.168.100.255 inet6 fe80::5054:ff:fe97:3af2 prefixlen 64 scopeid 0x20<link> ether 52:54:00:97:3a:f2 txqueuelen 1000 (Ethernet) RX packets 1326 bytes 127389 (124.4 KiB) RX errors 0 dropped 242 overruns 0 frame 0 TX packets 299 bytes 27625 (26.9 KiB)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (Lokale Schleife) RX packets 184 bytes 14404 (14.0 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 184 bytes 14404 (14.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ifconfig -a:
ens11: flags=4098<BROADCAST,MULTICAST> mtu 1500 ether 52:54:00:14:78:0e txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens12: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 fe80::5054:ff:fe81:e89 prefixlen 64 scopeid 0x20<link> inet6 2001:15c0:xxxx:xxxx::xxxx prefixlen 64 scopeid 0x0<global> ether 52:54:00:81:0e:89 txqueuelen 1000 (Ethernet) RX packets 281 bytes 24584 (24.0 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 165 bytes 14950 (14.5 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.xxx.xxx netmask 255.255.255.0 broadcast 192.168.100.255 inet6 fe80::5054:ff:fe97:3af2 prefixlen 64 scopeid 0x20<link> ether 52:54:00:97:3a:f2 txqueuelen 1000 (Ethernet) RX packets 1607 bytes 149627 (146.1 KiB) RX errors 0 dropped 297 overruns 0 frame 0 TX packets 327 bytes 31579 (30.8 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth2: flags=4089<BROADCAST,MULTICAST> mtu 1500 ether 52:54:00:e3:1d:5b txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (Lokale Schleife) RX packets 184 bytes 14404 (14.0 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 184 bytes 14404 (14.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
The problem I found now, is I have only a eth0, eth1 configured but I found now a eth2 (??????) and the eth1 is not working next boot I have a eth3 .......
ls -l /etc/sysconfig/network-scripts/ifcfg-eth*
-rw-r--r--. 1 root root 227 5. Dez 16:18 /etc/sysconfig/network-scripts/ifcfg- eth0 -rw-r--r--. 1 root root 482 5. Dez 16:25 /etc/sysconfig/network-scripts/ifcfg- eth1
#cat /etc/sysconfig/network-scripts/ifcfg-eth0
HWADDR=52:54:00:E3:1D:5B TYPE=Ethernet BOOTPROTO=none DEFROUTE=no IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME=eth0 UUID=35fb02e0-74f2-411a-9b76-978a07ebf3c5 ONBOOT=yes IPADDR=192.168.55.203 PREFIX=24 GATEWAY=192.168.55.1 ZONE=work
# cat /etc/sysconfig/network-scripts/ifcfg-eth1 TYPE="Ethernet" BOOTPROTO=none DEFROUTE="yes" IPV4_FAILURE_FATAL="yes" IPV6INIT="no" IPV6_AUTOCONF="yes" IPV6_DEFROUTE="yes" IPV6_PEERDNS="yes" IPV6_PEERROUTES="yes" IPV6_FAILURE_FATAL="no" NAME="eth1" #UUID="fed939b5-954e-4822-b6cc-553c4a35766a" UUID=eb5c2cbd-310f-4132-8bca-498bed1e651c DEVICE="eth1" ONBOOT="yes" DNS1="192.168.100.221" DOMAIN="xxxxxx.xxx yyyyy.yyyy" IPADDR=192.168.100.203 PREFIX=24 GATEWAY=192.168.100.220 DNS2=217.196.154.211 HWADDR=52:54:00:97:3A:F2 ZONE=internal
I have NetworkManager disabled but I mean this is a Problem from NetworkManager?
after X reboot I have a correct Network :-(.
dmesg has no output?
- mit freundlichen Grüßen / best regards,
Günther J. Niederwimmer
On 12/12/2015 05:41 AM, Günther J. Niederwimmer wrote:
The problem I found now, is I have only a eth0, eth1 configured but I found now a eth2 (??????) and the eth1 is not working next boot I have a eth3 .......
It wasn't clear that you were talking about KVM *guests* before.
Are the ethernet addresses changing between boots? If you run "ifconfig -a | grep ether" does the output change from one boot to another?
What do you get from "virsh dumpxml <guest>" in the KVM host?
Am Saturday 12 December 2015, 21:12:08 schrieb Gordon Messmer:
On 12/12/2015 05:41 AM, Günther J. Niederwimmer wrote:
The problem I found now, is I have only a eth0, eth1 configured but I found now a eth2 (??????) and the eth1 is not working next boot I have a eth3 .......
It wasn't clear that you were talking about KVM *guests* before.
Are the ethernet addresses changing between boots? If you run "ifconfig -a | grep ether" does the output change from one boot to another?
When the network is not working the virtio NICs are not working? When I boot / reboot I have only one from the configured NICs eth0 or eth1 and a not configured NIC eth2 after a broken reboot I have eth1 and eth3 and so on.
But sometimes after more reboots the network is working again?
The 2 "hostdev" configured NICs are working always (external)
What do you get from "virsh dumpxml <guest>" in the KVM host?
OK, I test it.
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-
Gordon Messmer -
Günther J. Niederwimmer