I m have no idea why this is happening so I just tell details maybe something will stick, this happens only with centos containers. . Ask anything.
This is dev server running lxd 3.0.3 deb
Linux dragon-ball-radar 5.3.0-25-generic #27~18.04.1-Ubuntu SMP Fri Dec 6 11:24:17 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux.
So far I have only used ubuntu 16/18 as virtualmachines but decided to try freeipa and used centos 8, because it seems reasonable.
I installed freeipa server and replica they have separate IP adresses x.x.x.100 and x.x.x.101 and for some reason pings start drop, or worse they keep going even after I shutdown that centos machine! This seems to happen after second freeipa installation, I can stop both containers and pings will still go for quite some time. Weird behaviour seems to start when starting stoping adding more centos machines.
There is like 10 other ubuntu machines and nothing like that happens, but freeipa messes a bit with network, still this shouldnt happen, because this is container after all.
Sometimes my pings dont drop, but some pings get replied by container others by?? I checked mac address with nmap and they match container’s mac address, maybe there is some cache something bug.
nmap which was run in centos shows many dropped packets by kernel.
5638 packets captured
8565 packets received by filter
2927 packets dropped by kernel
Any ideas would be welcome what I should try to check next?
Containers get IP address from router. Container info.
architecture: x86_64
config:
image.architecture: amd64
image.description: Centos 8 amd64 (20191204_07:08)
image.os: Centos
image.release: “8”
image.serial: “20191204_07:08”
limits.memory: 16GB
volatile.base_image: 54915ff915d2e9a1745f2df3d9a03abcf6a7d03437d6c1d1e726ebee3400e8cf
volatile.eth0.hwaddr: 00:16:3e:0b:70:bb
volatile.idmap.base: “0”
volatile.idmap.next: ‘[{“Isuid”:true,“Isgid”:false,“Hostid”:100000,“Nsid”:0,“Maprange”:65536},{“Isuid”:false,“Isgid”:true,“Hostid”:100000,“Nsid”:0,“Maprange”:65536}]’
volatile.last_state.idmap: ‘[{“Isuid”:true,“Isgid”:false,“Hostid”:100000,“Nsid”:0,“Maprange”:65536},{“Isuid”:false,“Isgid”:true,“Hostid”:100000,“Nsid”:0,“Maprange”:65536}]’
volatile.last_state.power: RUNNING
devices:
eth0:
name: eth0
nictype: bridged
parent: br0
type: nic
root:
path: /
pool: ceph-lxd
type: disk
ephemeral: false
profiles:
- default_ceph
stateful: false
description: “”