On Mon, Sep 21, 2009 at 11:44:50AM +1000, Oliver Hookins wrote:
> Hi,
>
> Just wondering if it is possible to retrieve information somehow about the
> status of the various communications links between nodes? For example, if
> one node was unreachable via multicast on one interface, but still reachable
> via multicast on a secondary interface would it be possible to retrieve this
> information (aside from parsing the logs)?
For the heartbeat comm layer:
r...@barkeeper2-xen# cl_status
Usage: cl_status <sub-command> [<options>] [<parameters>]
Sub-commands:
clientstatus <node-name> <client-id> [<timeout>]
Show the status of heartbeat clients.
hblinkstatus <node-name> <link-name>
Show the status of a heartbeat link
hbstatus
Indicate if heartbeat is running on the local system.
listhblinks <node-name>
List the network interfaces used as hearbeat links.
listnodes [<option>]
List the nodes in the cluster.
Options:
-p list only 'ping' type nodes
-n list only 'normal' type nodes
nodestatus <node-name>
List the node status.
nodeweight <node-name>
List the node weight.
nodesite <node-name>
List the node site.
nodetype <node-name>
List the nodes of a given type.
rscstatus
Show the status of cluster resources.
hbparameter -p <parameter-name>
Retrieve the value of a cluster parameter.
As for the valid parameter names, please refer to the man page.
r...@barkeeper2-xen:# cl_status hbstatus
Heartbeat is running on this machine.
r...@barkeeper2-xen:# cl_status listnodes
barkeeper2-xen
barkeeper1-xen
r...@barkeeper2-xen:# cl_status listhblinks barkeeper1-xen
br0
eth3
ethx
r...@barkeeper2-xen:# cl_status hblinkstatus barkeeper1-xen br0
up
r...@barkeeper2-xen:# cl_status hblinkstatus barkeeper1-xen eth3
up
r...@barkeeper2-xen:# cl_status hblinkstatus barkeeper1-xen ethx
up
r...@barkeeper2-xen:# cl_status hblinkstatus barkeeper2-xen ethx
up
...
For OpenAIS / corosync: no idea,
but I would expect there is something similar available.
If there is not such thing yet,
now is about time to make it available ;)
Anyone?
--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
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