Hello. I am experiencing weird problems in my PowerDNS setup. I'll describe my setup below. The problem is, that our superslave servers are getting Network Timeouts if they are requesting AXFR. We have some BIND slaves also, and it seems like BIND waits for received information longer before it gets timeout. I tried configuring more distributor-threads and both caches TTL to bit longer, bit it does not help at all.
All other requests are coming from master server fast without any delay. The problem raises only on axfr requests. Our setup: Authoritative Master DNS server (hosts about 1000 forward and reverse zones) PowerDNS 3.3.1 with Oracle backend using dnssec for ALLOW-AXFR-FROM configuration flag. Super Slave Server: PowerDNS 3.3.1 with sqlite3 backend is configured as slave. and there is supermaster configured in database. Both master and slave servers are rinning on the same network segment and there are no restrictions between servers on network side. Firewalls are also disabled. Log's from Master DNS server: AXFR of domain 'transferring zone' allowed: client IP slave.server.ip is in NSset TCP Connection Thread died because of network error: Writing data: Broken pipe Logs from Slave DNS server: Initiating transfer of 'Transferring zone' from remote 'master.name.server.ip' Unable to AXFR zone 'Transferring zone' from remote 'master.name.server.ip' (resolver): Timeout waiting for answer from master.name.server.ip:53 during AXFR Thank You in advance! Margus
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