thanks fooler well explained. Im convinced. will create script to automate restart.
On Thu, Jul 7, 2011 at 11:21 PM, fooler mail <[email protected]> wrote: > On Thu, Jul 7, 2011 at 6:18 PM, philip morales <[email protected]> > wrote: > > But is there a way to force ntp to re-discover new host without > restarting? > > I have more than 2000 unix servers global. > > nope... application normally called gethostbyname(3) to get the IP > address of hostname pass to that function call... it just return IP > address(es) without TTL value... once got the IP address... it creates > a socket and return a filedescriptor.. that filedescriptor is used for > connection with IP address it got from gethostbyname... > > for continous communication using the same filedescriptor and the IP > address it got.. it will never call gethostbyname(3) again... normally > programmers do that not to call gethostbyname again by assumption that > hostname IP addresss is fixed... unless otherwise they need to call it > again for a given reason... > > only to do it is to restart that NTPd process again... > > restarting wont cause a downtime and not even affected your host's > clock... your only problem is that you have 2000 servers globally... > way to do it is to create a script and automate it for you... > otherwise... condition yourself and prepare for a long battle doing > the manual way :-> > > fooler. > _________________________________________________ > Philippine Linux Users' Group (PLUG) Mailing List > http://lists.linux.org.ph/mailman/listinfo/plug > Searchable Archives: http://archives.free.net.ph >
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