Barry Margolin <bar...@alum.mit.edu> wrote: > vijay bommareddy <vijayb...@gmail.com> wrote: > > > > Can someone tell me, how many number of slaves does BIND technically > > support? Is there a maximum limit per master server? > > Why would there be any limit? The master doesn't need to keep track of > slaves, it just responds to queries from them. > > The zone transfer queries they make have a little more overhead than > "normal" queries, but they don't happen very often (only when the zone > changes). To avoid all slaves hammering the master at the same time, > NOTIFY messages are staggered after a change is loaded.
Right. If you think your server is having problems, look for xfer-out and 'sending notifies' in your logs. The options you can configure to control xfer traffic include: * `notify-rate`, `startup-notify-rate` (to limit how fast your server solicits xfers) * `transfers-out`, `transfers-per-ns` (to limit the number of TCP clients that can be tied up with zone transfers) * `tcp-clients` (overall budget, covering xfers, updates, and large responses) * `max-transfer-time-out`, `max-transfer-idle-out`, `tcp-initial-timeout` (to limit problems with broken secondaries) Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ - I xn--zr8h punycode Viking, North Utsire, South Utsire: Northwesterly, backing southerly, 5 or 6. Moderate or rough. Occasional rain. Good, occasionally poor. _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
