Setting up CTDB on OCFS2 and VMs ...

[ronnie sahlberg]

Can you please just go away.

We are trying to help here and your content-free spam is not helping.

On Fri, Dec 12, 2014 at 6:08 AM, steve <steve at steve-ss.com> wrote:
> On 12/12/14 11:36, Rowland Penny wrote:
>>
>> On 11/12/14 18:32, ronnie sahlberg wrote:
>>>
>>> I just tried building a single-node "cluster" on debian with ctdb.
>>
>>
>> Why a single node ????
>>
>>> I can check building a 4 node cluster next week when I am home from my
>>> travels.
>>
>>
>> Try it with two nodes
>>
>>>
>>> To get ctdb running on ubuntu 14.10, as root:
>>
>>
>> Hang on, you said 'debian' above
>>
>>>
>>> 1, Install the ctdb package:
>>> apt-get install ctdb
>>>
>>> 2, create a missing directory
>>> mkdir -p /var/lib/run/ctdb
>>
>>
>> Why is there a missing directory, sounds like a bug to me.
>>
>>>
>>> 3, remove the reclock file
>>> vi /etc/default/ctdb
>>> and comment out CTDB_RECOVERY_LOCK
>>
>>
>> But I want the lock.
>>
>>> 4, create a nodes file
>>> vi /etc/ctdb/nodes
>>> and add the line   127.0.0.1
>>
>>
>> Yes, but why '127.0.0.1' ???
>>
>>>
>>> 5, create a public addresses file
>>> vi /etc/ctdb/public_addresses
>>> and add the two lines
>>> 127.0.0.2/8 lo
>>> 127.0.0.3/8 lo
>>
>>
>> Do you have to create these ipaddresses, if so where and how
>>
>>> 6, start ctdb
>>> service ctdb start
>>>
>>
>> That is this first part I really understood.
>>
>>> then check everything looks fine with 'ctbb status' and 'tail
>>> /var/log/ctdb/log.ctdb'
>>>
>>>
>>> That will not really create a very interesting cluster, just one node,
>>> two public addresses and all on loopback.
>>> But this should at least verify that ctdbd will start and run.
>>> Then you can just shut it down and edit
>>> /etc/ctdb/nodes|public_addresses and make them more interesting.
>>
>>
>> Again, why just one node. ??
>>
>>> I personally suggest never running anything smaller than 4 node
>>> clusters for real data.
>>
>>
>> Yes, but I am testing, so where is the documentation for people like me,
>> who just want to get a couple of nodes up and running ???
>>
>
> There isn't anything even close to what you are asking for. Maybe we should
> take this to the samba list? It's one thing sitting with a laptop and making
> ctdb startup on its own, something very different making it work with samba,
> debian, wires, cables, network cards, switches and a real domain. It is also
> very different setting up a cluster on vms. I suppose this is where e.g.
> SUSE-HA comes into its own. The devs have real hardware to test upon, time
> to write documentation and support it. They'll come over and set it up for
> you and you just call if it doesn't work. We can't afford that though, devs
> who do it voluntarily or as a hobby can't ('can't be expected to', careful
> :-Ed.) write documentation at user level. But things are moving again with
> ctdb.
>