Marco Marongiu wrote:
On 09/01/13 20:21, [email protected] wrote:
i'm not sure if/how to implement this conditional fallback 'logic' for
ntp's server selection.
I had a similar problem, and I use cfengine to solve that: depending on
the network to which I am attached, my ntpd gets a different
configuration: Italian pool servers when I am in Italy, Norwegian pool
servers when I am in Norway, but not in the office; and our office
servers when I am in the office
You can find some information about my location detection policy here:
http://my.opera.com/marcomarongiu/blog/2012/11/24/location-detection-in-cfengine
I shall write a post to describe the policy I use to write ntp.conf and
restart the service. Unfortunately, I've been quite busy lately and
wasn't able to make some room for that.
Modern ntpd versions (i.e. those that can use the pool attribute) can
also easily handle multiple sets of servers in the same ntp.conf file.
Have you tried having a single static ntpd.conf file that contains
something like:
pool no.pool.ntp.org
pool it.pool.ntp.org
server office1
server office2
...
I do recognize that it is probably faster to simply rewrite/restart than
to wait for the pool logic to replace most of the Italian servers with
Norwegian ones!
Terje
--
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"
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