ishioka keiichi created TS-1916:
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Summary: There are cases where hostdb does not reference a ttl of
nameserver.
Key: TS-1916
URL: https://issues.apache.org/jira/browse/TS-1916
Project: Traffic Server
Issue Type: Bug
Components: DNS
Reporter: ishioka keiichi
hostdb is set as follows:
CONFIG proxy.config.hostdb.ttl_mode INT 0
CONFIG proxy.config.hostdb.timeout INT 1
If response of dns the next,ATS queries the DNS every 30 seconds.
$ dig foo.bar.com. A
;; ANSWER SECTION:
foo.bar.com. 30 IN A 10.10.10.1
If ttl is reduced as follow:, ATS will query the DNS every 10 seconds.
$ dig foo.bar.com. A
;; ANSWER SECTION:
foo.bar.com. 300 IN A 10.10.10.1
However, if it increased the value of ttl, ATS has continued to query DNS
every 10 seconds.
$ dig foo.bar.com. A
;; ANSWER SECTION:
foo.bar.com. 300 IN A 10.10.10.1
However, is adapted then HUP the traffic_server...
Why??
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