How to add an node in a cluster?

[qwerty1111]

Hi,
I purchased the book Mastering Proxmox and tried to follow the explanation.


I wanted to create 2 notes in a cluster.


I created 1 cluster.


Follwoing the information in the link:


https://pve.proxmox.com/wiki/Proxmox_VE_2.0_Cluster


To add a node, I entered the command :


pvecm add 192.168.104.27


and received the error message :

authentication key already exists




How can I add a second node to my cluster?


Thanks

 

[m.ardito]

are you issuing that command from the joining (EMPTY, no VMs) node?
ie: 192.168.104.27 is NOT the address of that node but the address of the first node where you created the cluster, right?

Marco

 

[qwerty1111]

Thanks for the help.

Actually,I purchased a dedicated server: 151.80. xxx.xxx

I don’t have any VM ‘s yet.

192.168.104.27 was just a randon local ip address I selected to create the second node.



There is the result of the command pvecm status if that can help:

root@dublin:~# pvecm status
Version: 6.2.0
Config Version: 1
Cluster Name: clusterParis
Cluster Id: 37269
Cluster Member: Yes
Cluster Generation: 4
Membership state: Cluster-Member
Nodes: 1
Expected votes: 1
Total votes: 1
Node votes: 1
Quorum: 1
Active subsystems: 5
Flags:
Ports Bound: 0
Node name: dublin
Node ID: 1
Multicast addresses: 239.192.XXX.XXX
Node addresses: 151.80.XXX.XXX

Thanks,

 

[qwerty1111]

And there is the result for:

cat /etc/hosts:



root@dublin:~# cat /etc/hosts


# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
151.80.xxx.xxx dublin.com dublin
# The following lines are desirable for IPv6 capable hosts
#(added automatically by netbase upgrade)
::1 ip6-localhost ip6-loopback
feo0::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

 

[m.ardito]

Not sure this cluster can work across different subnets...
for sure not recommended for live migration
http://forum.proxmox.com/threads/22197-live-migration-with-different-IP

Marco

 

[qwerty1111]

Thanks,

I never works with linux distributions before.

This is for tests purposes.

What would be then the best practice to create 2 nodes on the same cluster?

I only have 1 ipv4 nad 1 ipv6 on my dedicated server

I can erase and reinstall proxmox if required.

Thanks

 

[m.ardito]

how many servers do you have?
you need at least 2 servers to have a cluster...

1 is in hosting? and has 1 ipv4 nad 1 ipv6 address

the other?

Marco

 

[qwerty1111]

I only have 1 dedicated server hosted with OVH connected to the ip v4 151.80.XXX.XXX.

http://www.kimsufi.com/uk/

I don't use the ipv6 even if I have one

Thanks,

 

[pirateghost]

What exactly are you going to cluster if you only have one server?

This isn't a Linux thing, it's a server thing. You can't cluster any OS with a single server....the entire meaning behind cluster is to utilize more than one computer to perform a task....