I have physic server on CentOS 7, with LXC container and bridget network. Also 3 IP address:
*.202: on bridget network of host
*.213: on bridget network of first big LXC
*.214: on bridget network of second big LXC
*.202 up/down randomly, no configuration change, it's just start to up/down from some moment.
Serverdensity monitoring detected loss on main IP this night, at:
1:02 - 1-5 min downtime
4:39 - 1-5 min downtime
7:10 - 1-5 min downtime
7:42 - 1-5 min downtime
8:48 - 1-5 min downtime
Time is GMT+3
No loss on second and third IP, it worked normaly.
And this time is the same as monitorix reported from this host, localy: monitorix graph
route -n from host:
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 88.198.61.193 0.0.0.0 UG 425 0 0 bridge0
10.8.0.0 10.8.0.2 255.255.255.0 UG 0 0 0 tun0
10.8.0.2 0.0.0.0 255.255.255.255 UH 0 0 0 tun0
10.20.0.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr2
88.198.61.192 0.0.0.0 255.255.255.224 U 425 0 0 bridge0
192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr1
route -n from *.213
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 88.198.61.193 0.0.0.0 UG 0 0 0 eth0
88.198.61.192 0.0.0.0 255.255.255.224 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1035 0 0 eth0
brctl from host:
bridge name bridge id STP enabled interfaces
bridge0 8000.32a853223b87 no enp4s0
vnet1
vnet2
virbr1 8000.169641375908 yes virbr1-nic
vnet0
vnet4
vnet5
vnet6
vnet7
vnet8
virbr2 8000.226f586158a8 yes virbr2-nic
vnet3
vnet9
*.202 is on: bridge0 (down some time)
*.213 is on: vnet1 (work well)
*.214 is on: vnet2 (work well)
ifconfig and netstat from host: http://paste.ubuntu.com/22669410/
How to find the source of the problem? Could this be the problem CentOS installation or configuration?
