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I am more worried about the DNS caching issue. The 2+ hosts failing should not be much of a problem if you have a separate health checker host which does nothi

by hatred 12y ago

I am more worried about the DNS caching issue. The 2+ hosts failing should not be much of a problem if you have a separate health checker host which does nothing except gathering heart-beats from all the hosts in your fleet and updating the DNS periodically.

korzun 12y ago
That's exactly why it's a problem. If you have 3 hosts and 2 of them go down, in this setup there is more than 50% chance that cached hosts will be trying to connect to a non-existing server. Also expecting client to perform a DNS lookup every time there is an outgoing log packet is pretty shitty for performance. You can't guarantee near instant DNS server availability for every client.
hijinks 12y ago
not to mention people that use something like a local caching daemon like nscd might cache a bad ip for a whole day