[DRBD-user] V9 res file syntax

[Paul D. O'Rorke]

Can I convince anyone to show me a working res file for the V9 3 node 
setup with multiple NICs and direct connections?

Try as I may I simply cannot get my res file to parse.

I even tried doing it all on the one network as per the first example 
but I can't even get the examples to parse, a copy/paste of the 3 node 
example complains that "connection-mesh" in in the wrong place.  I 
figured I would take a working example and go from there but even then I 
get:

    drbd.d/webdav.res:7: Parse error: 'disk | device | address |
    meta-disk | flexible-meta-disk' expected,
             but got 'node-id'

so I can't even seem to get the right structure and I am clearly missing 
something fundamental here...

Does anyone have any suggestions?

* Paul O'Rorke*


On 2021-10-05 3:13 p.m., Paul D. O'Rorke wrote:
>
> Hi guys,
>
> sorry to keep bugging you with this.  Can anyone give me a sample 
> working res file for a 3 node setup with crossover links?
>
> It says here 
> https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-drbdconf-conns 
> <https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-drbdconf-conns> :
>
> "If you have got enough network cards in your servers, you can create 
> direct cross-over links between server pairs. A single four-port 
> ethernet card allows to have a single management interface, and to 
> connect 3 other servers, to get a full mesh for 4 cluster nodes."
>
> I do, and each of the three nodes can ping the other two nodes to 
> which they are connect.  But I am confused about how/where their IPs 
> and ports are defined in the .res file.    I have three hosts 
> connected directly via discrete interfaces on each node.:
>
> 01 <----> 02 ---- 10.10.1.0/24
> 02 <----> 03 ---- 10.10.2.0/24
> 01 <----> 03 ---- 10.10.3.0/24
>
> back to the page is then says this:
>
> In this case you can specify a different IP address to use the direct 
> link:
>
> resource r0 {
>   ...
>   connection {
>     host alice   address 10.1.2.1:7010;
>     host bob     address 10.1.2.2:7001;
>   }
>   connection {
>     host alice   address 10.1.3.1:7020;
>     host charlie address 10.1.3.2:7002;
>   }
>   connection {
>     host bob     address 10.1.4.1:7021;
>     host charlie address 10.1.4.2:7012;
>   }
> }
>
> I assume the ... on line 2 is referring to the previous example above 
> that, which is:
>
> resource r0 {
>    device    /dev/drbd1;
>    disk      /dev/sda7;
>    meta-disk internal;
>    on alice {
>      address   10.1.1.31:7000;
>      node-id   0;
>    }
>    on bob {
>      address   10.1.1.32:7000;
>      node-id   1;
>    }
>    on charlie {
>      address   10.1.1.33:7000;
>      node-id   2;
>    }
>    connection-mesh {
>      hosts alice bob charlie;
>    }
> }
>
> But I keep getting parsing errors no matter where I put that "connection" stanza.  drbdadm complains with:
>
> # drbdadm up webdav
> drbd.d/webdav.res:18: Parse error: 'protocol | on | disk | net | syncer | startup | handlers | ignore-on | stacked-on-top-of' expected,
>   but got 'connection' (TK 282)
>
> I do apologize if I am again asking a question the answer to which is right in front of my face and I'm not seeing it, but where do the three "connection" statements go?  Obviously they don't go where I put them.
> What would a complete example of a 3 node V9 with a discrete NIC and cable between each node look like?
>
> Please and thanks and sorry to be asking such a newb question.  :(
>
> Paul
>
>
>
>
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