On Tue, 20 May 2014, Max Williams wrote:
Hi, In Rsyslog 5.8, at what point is the forwarding destination hostname resolved? Only when the rsyslog daemon is started? Is the TTL of the DNS record used to re-resolve it periodically?
I believe that all outputs are opened when the first message to that destination is sent.
the connection gets re-established if it times out, or if you send rsyslog a HUP, I would expect that it will resolve the address at that time with no internal caching.
The DNS caching that rsyslog does is intended to reduce the number of DNS lookups for inbound messages (especially important for UDP)
David Lang
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