proxmox server clustering problem

[sub3xt1]

i have SERVER_A, SERVER_B and SERVER_C, with promox in cluster. the master is SERVER_A.

a. how to transfer role MASTER from SERVER_A to SERVER_B??
b. i issued command to disjoint cluster
# pveca -d 2

the status of SERVER_B (id 2) is still no sync. how to fix it??

c. is there any plan to run proxmox with share storage??? maybe OCFS file system maybe suitable choosen.

 

[sub3xt1]

VM copies

are there any manual to configure VM hot copies like on vmware workstation??

while i use vmware workstation or sun virtualbox, i can copy any VM that has been customize into new server. is there any possibilities using proxmox??

 

[tom]

i have SERVER_A, SERVER_B and SERVER_C, with promox in cluster. the master is SERVER_A.

a. how to transfer role MASTER from SERVER_A to SERVER_B??
b. i issued command to disjoint cluster
# pveca -d 2

the status of SERVER_B (id 2) is still no sync. how to fix it??

c. is there any plan to run proxmox with share storage??? maybe OCFS file system maybe suitable choosen.

just force a node to be the new master via pveca -m

and now, tell all the others that the should sync. from the new master. ( pveca -s [-h IP]).

shared storage: already in 1.4beta1
(but we do not use OCFS or any other cluster file system, not needed here)

See http://pve.proxmox.com/wiki/Storage_Model

 

[tom]

Re: VM copies

are there any manual to configure VM hot copies like on vmware workstation??

while i use vmware workstation or sun virtualbox, i can copy any VM that has been customize into new server. is there any possibilities using proxmox??

you can backup/restore with vzdump to duplicate VM´s.

 

[sub3xt1]

thank you, tom.
i have done vzdump, in terminal, not in browser. i think it is on bowser. Great.

First.
i create backup job in browser, and restore via terminal.
in backup job, there is log.
i issued command:
# vzdump --restore vzdump-103.tgz 104

how to log restore job. any script did i miss??

Second.
after issued command below, there are two VM identical, id name 103 and 104.
surprisingly, hostname, ip, etc is SAME and there is NO NETWORK CONFLICT. How did this happen??

particularly, in vmware workstation or sun virtualbox, i need to disconnect network first, and then correct it.

Third.
from VM 103, i can ping outside network.
# ping other_server
64 bytes from other_server

from VM 104, i can ping outside network.
# ping other_server
64 bytes from other_server

i name VM 103 : server_a, VM 104 : server_b
but, when i ping two each other, from server_a
# ping server_b
icmp_seq=1 destination host unreachable

i ping from server_b
# ping server_a
icmp_seq=1 destination host unreachable

how can i connect those two identical VM ??

note:
1 use KVM, install fresh from iso.

 

[sub3xt1]

Great, tom.

i have review clustering model, using shared storage, there is always cluster file system. it is always using locking model, eeither distributed or exclusive locking model.

how can two or more server access same storage without locking mechanism?? either share storage using iscsi, nfs, fc or anything else??

but, anyway,..
i wait next stable proxmox product...

 

[dietmar]

i have review clustering model, using shared storage, there is always cluster file system. it is always using locking model, eeither distributed or exclusive locking model.

how can two or more server access same storage without locking mechanism?? either share storage using iscsi, nfs, fc or anything else??

Sorry, but I do not understang your questions.

We use no cluster filesystem, because that is simply not necessary. We use our own locking mechanism.

- Dietmar

 

[tom]

thank you, tom.
i have done vzdump, in terminal, not in browser. i think it is on bowser. Great.

First.
i create backup job in browser, and restore via terminal.
in backup job, there is log.
i issued command:
# vzdump --restore vzdump-103.tgz 104

how to log restore job. any script did i miss??

you can send the log via email, see 'man vzdump'

Second.
after issued command below, there are two VM identical, id name 103 and 104.
surprisingly, hostname, ip, etc is SAME and there is NO NETWORK CONFLICT. How did this happen??

vzdump is a backup tool and therefore it does a backup. its not a cloning tool taking care about ip adresses or anything else.

particularly, in vmware workstation or sun virtualbox, i need to disconnect network first, and then correct it.

Third.
from VM 103, i can ping outside network.
# ping other_server
64 bytes from other_server

from VM 104, i can ping outside network.
# ping other_server
64 bytes from other_server

i name VM 103 : server_a, VM 104 : server_b
but, when i ping two each other, from server_a
# ping server_b
icmp_seq=1 destination host unreachable

i ping from server_b
# ping server_a
icmp_seq=1 destination host unreachable

how can i connect those two identical VM ??

note:
1 use KVM, install fresh from iso.

 

[sub3xt1]

you didn't answer my 3rd question.

here my step:
1. i install centos 5.2. IP: 192.168.8.25, name: server_a, VM: 103
2. i backup VM 103
3. from console, i restore to new server, VM 104
4. i correct hostname, ip of VM 104. IP:192.168.8.26, name: server_b, VM: 104

5. from server_a, i can ping outside network
6. from server_b, i can ping outside network
7. from server_a or server_b, i CANNOT ping each other.

 

[tom]

yes, as you mix multiple issues in one thread and this question has nothing to do with the cluster.

pls always use a subject describing your issue and in the text give all information. if you have multiple issue, post them separately.

this structure will help others with similar questions.

additional, before posting read the docu page in our wiki and use the search function in the forum.