On 16/02/11 13:39, Gert Doering wrote:
Hi,
On Wed, Feb 16, 2011 at 09:04:49AM +0000, Phil Mayers wrote:
Which makes "monitoring whether everything is fine" a somewhat more
interesting challenge :-) - if the machine is up, but bgpd fails, the
service might silently fall over to another instance and things like
"does this anycasted DNS server still respond?" will happily report
success...
SNMP to pool the BGP neighbour status?
If that would work for IPv6 BGP peers...
Ah.
We're mostly not relying on SNMP to monitor things, but on ping and
"service queries" (DNS probes, HTTP checks, ...) to the actual services,
interface IPs, etc.
We do that too.
I did wonder at one point about using GRE tunnels and Linux policy
routing so that I could "select" which backend of a virtual IP I was
checking against.
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