Proxmox: local node address: cannot use IP

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In thist post I will show you how to sold the problem local node address: cannot use IP at cluster join.

The problem

When I tryed to join a new member to my proxmox cluster I get the fallowing error:

detected the following error(s):
* local node address: cannot use IP '', not found on local node!

TASK ERROR: Check if node may join a cluster failed!

But the intresting is that the ip is not the correct ip on my host. That is First I could not figure out where the proxmox fint that wrong ip.

The solution

You need to edit your /etc/hosts file: localhost.localdomain localhost proxmox162.mydomain.intra proxmox162

# The following lines are desirable for IPv6 capable hosts

::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts