Hallo, Recently, I faced huge problems with my DNS servers (bind crashed with no apparent reason). Some of the symptons were: * Huge number of connections on our firewalls (>150000). * A lot of errors in syslog about max file descriptors limits reached (currently on system, the FD limit is 4096, the default of centos)
Anyway, after the proposal of a friend of mine, I removed the the max-cache- size limit (that was set to 256MB. After a restart of bind, the FW guys reported a huge drop on connections (<10000)! Additionally, I have no crashes so far (in contract with 1-2 per week). So, why: a. bind generated so much traffic? b. Is it possible to have bind crash because I could not handle the cache clean-up and on the same time to serve requests? Thank you _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
