jlehtone wrote:Is this on the VM? (I.e. a CentOS guest config issue.)
Why do you restart the network.service?
Hi,
CentOS 7 is on VM
I was following below document;
CentOS / Redhat: KVM Bridged Network Configuration
https://www.cyberciti.biz/faq/rhel-linu ... h-libvirt/
which, I suppose, is not relevant to the setup of CentOS 7 on VM? But I'll run CentOS 7 as host for oVirt. I'm prepared to test nested virtualization.
Just started CentOS 7
$ ifconfig
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br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.8.6 netmask 255.255.255.0 broadcast 192.168.8.255
inet6 fe80::60f5:83ff:fed1:a361 prefixlen 64 scopeid 0x20<link>
ether 62:f5:83:d1:a3:61 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 54 bytes 5303 (5.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.8.4 netmask 255.255.255.0 broadcast 192.168.8.255
inet6 fe80::f3fd:b018:710c:c91 prefixlen 64 scopeid 0x20<link>
ether 52:54:00:ee:58:34 txqueuelen 1000 (Ethernet)
RX packets 167 bytes 33462 (32.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 64 bytes 7574 (7.3 KiB)
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 1 (Local Loopback)
RX packets 10 bytes 904 (904.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10 bytes 904 (904.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:8b:64:ac 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
The static IP "br0 192.168.8.6" is correct.
Why "inet 192.168.8.4" appears on eth0 ?
Why virbr0 (NAT) is there?
$ ping yahoo.com
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ping: yahoo.com: Name or service not known
It can't ping Host - Ubuntu 16.04
$ ping 192.168.8.3
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PING 192.168.8.3 (192.168.8.3) 56(84) bytes of data.
From 192.168.8.6 icmp_seq=1 Destination Host Unreachable
From 192.168.8.6 icmp_seq=2 Destination Host Unreachable
....
Why it changes to 192.168.8.6 ?
nor gateway
$ ping 192.168.8.1
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PING 192.168.8.1 (192.168.8.1) 56(84) bytes of data.
From 192.168.8.6 icmp_seq=1 Destination Host Unreachable
From 192.168.8.6 icmp_seq=2 Destination Host Unreachable
Again why it changes to 192.168.8.6 ?
On Host Terminal
⟫ ifconfig
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br0 Link encap:Ethernet HWaddr f0:79:59:65:2f:bb
inet addr:192.168.8.3 Bcast:192.168.8.255 Mask:255.255.255.0
inet6 addr: fe80::f279:59ff:fe65:2fbb/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5163 errors:0 dropped:0 overruns:0 frame:0
TX packets:5092 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3302400 (3.3 MB) TX bytes:1028640 (1.0 MB)
enp2s0 Link encap:Ethernet HWaddr f0:79:59:65:2f:bb
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6469 errors:0 dropped:0 overruns:0 frame:0
TX packets:5217 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3460482 (3.4 MB) TX bytes:1040176 (1.0 MB)
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:65536 Metric:1
RX packets:54325 errors:0 dropped:0 overruns:0 frame:0
TX packets:54325 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2135739980 (2.1 GB) TX bytes:2135739980 (2.1 GB)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.100.1 Bcast:192.168.100.255 Mask:255.255.255.0
UP BROADCAST 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)
vnet0 Link encap:Ethernet HWaddr fe:54:00:ee:58:34
inet6 addr: fe80::fc54:ff:feee:5834/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:113 errors:0 dropped:0 overruns:0 frame:0
TX packets:294 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10744 (10.7 KB) TX bytes:42813 (42.8 KB)
$ cat /etc/sysconfig/network
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# Created by anaconda
NETWORKING=yes
HOSTNAME=centos7-gnome-pc1b00
GATEWAY=br0
$ cat /etc/sysconfig/network-scripts/ifcfg-eth0
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TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID=3a20e867-00f1-4cda-ab7b-e4ad71f33f5b
DEVICE=eth0
ONBOOT=yes
ETHTOOL_OPTS="autoneg off speed 100 duplex full"
BRIDGE=br0
HWADDR=b8:ac:6f:65:31:e5
NM_CONTROLLED=no
DNS1=8.8.8.8
DNS2=4.2.2.2
$ cat /etc/sysconfig/network-scripts/ifcfg-br0
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DEVICE=br0
TYPE=Bridge
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.8.6
NETMASK=255.255.255.0
DELAY=0
$ cat /etc/sysconfig/network-scripts/route-br0
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192.0.0.0/8 via 192,168.8.1 dev br0
Shall I change all eth0 as enp2s0 ?
Please help. Thanks in advance
Regards
satimis