action #166844: Multiple machines in 10.100.192.0/24 network are unreachable - openQA Infrastructure (public) - openSUSE Project Management Tool

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action #166844

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Multiple machines in 10.100.192.0/24 network are unreachable

Added by jbaier_cz 3 months ago. Updated 3 months ago.

Status:

Resolved

Priority:

High

Assignee:

jbaier_cz

Category:

Target version:

openQA Project (public) - Ready

Start date:

2024-09-16

Due date:

% Done:

Estimated time:

Description

Observation¶

Some hosts inside 10.100.192.0/24 are unreachable.

$  ping dagr.qam.suse.cz
PING dagr.qam.suse.cz (10.100.192.230) 56(84) bytes of data.
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=1 Destination Host Unreachable
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=2 Destination Host Unreachable

$  ping odin.qam.suse.cz
PING odin.qam.suse.cz (10.100.192.224) 56(84) bytes of data.
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=1 Destination Host Unreachable
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=2 Destination Host Unreachable

$  ping loki.qam.suse.cz
PING loki.qam.suse.cz (10.100.192.228) 56(84) bytes of data.
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=1 Destination Host Unreachable
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=2 Destination Host Unreachable

$  ping thor.qam.suse.cz
PING thor.qam.suse.cz (10.100.192.226) 56(84) bytes of data.
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=1 Destination Host Unreachable
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=2 Destination Host Unreachable

$  ping briza.qam.suse.cz
PING briza.qam.suse.cz (10.100.192.84) 56(84) bytes of data.
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=1 Destination Host Unreachable
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=2 Destination Host Unreachable

$  ping llanfairpwllgwyngyll.qam.suse.cz
PING llanfairpwllgwyngyll.qam.suse.cz (10.100.192.1) 56(84) bytes of data.
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=1 Destination Host Unreachable
From nx5672srv1-a-6.suse.cz (10.100.63.253) icmp_seq=2 Destination Host Unreachable

Those servers cannot be reached even from within the network itself

void:~ #  ping thor.qam.suse.cz
PING thor.qam.suse.cz (10.100.192.226) 56(84) bytes of data.
From void.qam.suse.cz (10.100.192.105) icmp_seq=1 Destination Host Unreachable

void:~ #  ip r
default via 10.100.199.254 dev eth0
10.100.192.0/21 dev eth0 proto kernel scope link src 10.100.192.105

void:~ #  ip a show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether ac:1f:6b:7a:dd:40 brd ff:ff:ff:ff:ff:ff
    altname eno1
    altname enp4s0
    inet 10.100.192.105/21 brd 10.100.199.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::ae1f:6bff:fe7a:dd40/64 scope link
       valid_lft forever preferred_lft forever

Steps to reproduce¶

ping 10.100.192.227

Expected result¶

The address is reachable.

Impact¶

Multiple hosts are unreachable, testing / developing workflow endangered.

Further details¶

The problem on 10.100.192.1 (aka llanfairpwllgwyngyll.qam.suse.cz) was seen already on Friday (see https://suse.slack.com/archives/C029APBKLGK/p1726245433044899), but at that time at least dagr.qam.suse.cz (10.100.192.230) was still reachable.