Context
◦ Docker was introduced with ClickHouse in LiveNX version 24.2.
◦ After installing LiveNX 24.2, a new interface and route related to Docker appear on the machine because ClickHouse runs in a Docker container.
◦ When you run the ip route command, you might see an entry like this:
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
Explanation:
◦ This route is for the Docker network.
◦ Traffic destined for the IP range 172.17.0.0/16 will be handled by the docker0 network interface.
◦ proto kernel means this route was added automatically by the kernel.
◦ scope link means the route is directly connected to the local link.
◦ src 172.17.0.1 specifies the source IP address for this route.
◦ linkdown indicates that the docker0 interface is currently down or inactive.
Summary:
◦ Traffic for the Docker network 172.17.0.0/16 is routed through the docker0 interface, which is currently down.
◦ Ensure that LiveNX devices do not use IP addresses in the 172.17.0.0/16 range to avoid issues. Devices in this range may show as down in LiveNX, and flows may not appear.