Re: [libvirt-users] Help with Vrbr0

On Friday 22 November 2013 04:19 PM, Sherin A wrote: > On Friday 22 November 2013 01:33 PM, Sherin A wrote: >> On Friday 22 November 2013 01:24 PM, Gao feng wrote: >>> On 11/22/2013 03:47 PM, Sherin A wrote: >>>> Hello, >>>> >>>> I am not able to see vrbr0 in my box. Can some one help me with this ? . I am trying KVM+libvirt and planing to use Routed mode. I hope this virbr0 must be up for using this . I can give an >>>> strace too. >>>> >>>> OS : Debian , kernel 3.12.0 >>>> libvrit version : 0.9.8 >>>> ____________________________________________________________________ >>>> root@:~# ifconfig >>>> br0 Link encap:Ethernet HWaddr 4c:72:b9:32:32:86 >>>> inet addr:10.0.0.12 Bcast:10.0.0.255 Mask:255.255.255.0 >>>> inet6 addr: fe80::4e72:b9ff:fe32:3286/64 Scope:Link >>>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >>>> RX packets:4523 errors:0 dropped:0 overruns:0 frame:0 >>>> TX packets:4068 errors:0 dropped:0 overruns:0 carrier:0 >>>> collisions:0 txqueuelen:0 >>>> RX bytes:2286336 (2.2 MB) TX bytes:411238 (411.2 KB) >>>> >>>> eth0 Link encap:Ethernet HWaddr 4c:72:b9:32:32:86 >>>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >>>> RX packets:17044 errors:0 dropped:0 overruns:0 frame:0 >>>> TX packets:14253 errors:0 dropped:0 overruns:0 carrier:0 >>>> collisions:0 txqueuelen:1000 >>>> RX bytes:12594945 (12.5 MB) TX bytes:1902456 (1.9 MB) >>>> Interrupt:20 Memory:f7c00000-f7c20000 >>>> >>>> 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:4 errors:0 dropped:0 overruns:0 frame:0 >>>> TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 >>>> collisions:0 txqueuelen:0 >>>> RX bytes:240 (240.0 B) TX bytes:240 (240.0 B) >>>> >>>> ------------------------------------------------------------------- >>>> root@:~# virsh net-start default >>>> error: Failed to start network default >>>> error: failed to add iptables rule to enable masquerading >>>> >>>> root@:~# virsh net-list --all >>>> Name State Autostart >>>> ----------------------------------------- >>>> default inactive yes >>>> >>>> root@:~# virsh net-start default >>>> error: Failed to start network default >>>> error: failed to add iptables rule to enable masquerading >>>> >>> seems like your kernel doesn't have ipt_MASQUERADE installed. >>> try modprobe ipt_MASQUERADE >>> >> Hi Gao, >> >> >> Yes , it looks like I am missing more module. I will recompile the kernel and test more, the following is the reason behind this issue. >> >> root@:~# tail /var/log/libvirt/libvirtd.log >> 2013-11-22 07:43:06.388+0000: 4328: error : virCommandWait:2192 : internal error Child process (/sbin/iptables --table nat --insert POSTROUTING --source 192.168.122.0/24 ! --destination >> 192.168.122.0/24 --jump MASQUERADE) status unexpected: exit status 3 >> 2013-11-22 07:43:06.388+0000: 4328: error : networkAddMasqueradingIptablesRules:966 : failed to add iptables rule to enable masquerading >> >> root@:~# /sbin/iptables --table nat --insert POSTROUTING --source 192.168.122.0/24 ! --destination 192.168.122.0/24 --jump MASQUERADE >> iptables v1.4.12: can't initialize iptables table `nat': Table does not exist (do you need to insmod?) >> Perhaps iptables or your kernel needs to be upgraded. >> root@# find /lib/modules/`uname -r` -iname "ipt*.ko" >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_ULOG.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_REJECT.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_raw.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_filter.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_CLUSTERIP.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_ah.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_mangle.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/iptable_security.ko >> /lib/modules/3.12.0-zilonus/kernel/net/ipv4/netfilter/ipt_ECN.ko >> root@~# >> root@myhome:~# lsmod | grep ipt >> ipt_REJECT 12541 0 >> iptable_mangle 12695 0 >> iptable_filter 12810 0 >> ip_tables 26952 2 iptable_mangle,iptable_filter >> x_tables 29804 11 xt_physdev,ip6table_filter,ip6_tables,ebtables,xt_state,ipt_REJECT,xt_CHECKSUM,iptable_mangle,xt_tcpudp,iptable_filter,ip_tables >> root@:~# modinfo iptable_nat >> ERROR: modinfo: could not find module iptable_nat >> root@:~# >> >> I will compile the kernel and get back soon. >> > > I fixed the iptable issue . But it is still not showing vrbr0 . Now it shows the following error , > root@myhome:~# virsh net-list --all > Name State Autostart > ----------------------------------------- > default inactive yes > > root@myhome:~# virsh net-start default > error: Failed to start network default > error: internal error Child process (/usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo > --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override) status unexpected: exit > status 2 > > > 2013-11-22 10:42:51.113+0000: 1288: error : virCommandWait:2192 : internal error Child process (/usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces > --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 > --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override) status unexpected: exit status 2 > I fixed this too , there was a multiple instance of dnsmasq making this mess, I killed it and removed the autostart too. that fixed the issue, Now vrbr0 is up oot@myhome:~# ps aux | grep mask root 3135 0.0 0.0 13584 924 pts/0 S+ 16:19 0:00 grep --color=auto mask root@myhome:~# ps aux | grep dns dnsmasq 1196 0.0 0.0 33020 1016 ? S 16:10 0:00 /usr/sbin/dnsmasq -x /var/run/dnsmasq/dnsmasq.pid -u dnsmasq -r /var/run/dnsmasq/resolv.conf -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new 134 2749 0.0 0.0 33024 1032 ? S 16:15 0:00 /usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override 134 2807 0.0 0.0 33024 1028 ? S 16:16 0:00 /usr/sbin/dnsmasq -u libvirt-dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override root 3137 0.0 0.0 13588 928 pts/0 S+ 16:20 0:00 grep --color=auto dns root@myhome:~# pkill -9 dnsmasq root@myhome:~# ps aux | grep dns root 3140 0.0 0.0 13584 928 pts/0 S+ 16:20 0:00 grep --color=auto dns root@myhome:~# virsh net-start default Network default started root@myhome:~# ifconfig br0 Link encap:Ethernet HWaddr 4c:72:b9:32:32:86 inet addr:10.0.0.12 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::4e72:b9ff:fe32:3286/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1428 errors:0 dropped:0 overruns:0 frame:0 TX packets:1517 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1400480 (1.4 MB) TX bytes:194878 (194.8 KB) eth0 Link encap:Ethernet HWaddr 4c:72:b9:32:32:86 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1847 errors:0 dropped:0 overruns:0 frame:0 TX packets:1525 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1496510 (1.4 MB) TX bytes:203001 (203.0 KB) Interrupt:20 Memory:f7c00000-f7c20000 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:4 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:240 (240.0 B) TX bytes:240 (240.0 B) virbr0 Link encap:Ethernet HWaddr 16:ea:84:8f:53:c8 inet addr:192.168.122.1 Bcast:192.168.122.255 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:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) root@myhome:~# update-rc.d -f dnsmasq remove Removing any system startup links for /etc/init.d/dnsmasq ... /etc/rc0.d/K85dnsmasq /etc/rc1.d/K85dnsmasq /etc/rc2.d/S15dnsmasq /etc/rc3.d/S15dnsmasq /etc/rc4.d/S15dnsmasq /etc/rc5.d/S15dnsmasq /etc/rc6.d/K85dnsmasq root@myhome:~# Thank you for your help.