On Thu, 26 Aug 2010, lxnf9...@comcast.net wrote:
On Thu, 26 Aug 2010, Dan Frincu wrote:
In OpenAIS for example, in /etc/ais/openais.conf you have a directive
called interface. In this directive you specify a ringnumber, bindnetaddr,
mcastaddr and mcastport. Configuring 2 communication channels means using
adding rrp_mode: passive, ringnumber 0 and ringnumber 1, two interface
directives in which you use different bindnetaddr IP addresses (ex:
10.0.0.1 and 10.0.0.2, or whatever IP's you use, but preferably each IP
address should be assigned to a different network interface), two
different mcastaddr multicast groups (or mcastport, but I'd recommed
different mcastaddr's in the range of 239.x.x.x).
The principle behind it is if one communication channel (network card, IP
address connectivity, multicast group/port) fails, the other one is still
there for redundancy. I see this similar to the way ring network
topologies work, without the token.
Regards,
Dan.
p.s.: Andrew, nice to have you back, to paraphrase a famous quote "Mr.
Anderson. Welcome back, we missed you."
Thanks that helps a lot
Just one more thing
If two interfaces are configured are they both used equally
Richard
I believe I can answer my own question
http://www.novell.com/documentation/sle_ha/book_sleha/?page=/documentation/sle_ha/book_sleha/data/sec_ha_installation_setup.html
Use the Redundant Ring Protocol (RRP) to tell the cluster how to use these
interfaces. RRP can have three modes (rrp_mode): if set to active,
Corosync uses all interfaces actively. If set to passive, Corosync uses
the second interface only if the first ring fails.
Richard
lxnf9...@comcast.net wrote:
> The DRBD manual says
>
> It is absolutely vital to configure at least two independent OpenAIS
> communication channels for this functionality to work correctly.
>
> My Google'n has not yielded any results in the how to do this
> department
> I have DRBD configured and working properly with one channel
> Where can I find info to add a second channel
>
> Richard
>
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>
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> Bugs:
> http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
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