Hello List, I’m having difficulties to configure ATS to *not* do any DNS lookups for parents.
Relevant configuration: ** records.conf: CONFIG proxy.config.http.parent_proxy_routing_enable INT 1 CONFIG proxy.config.admin.user_id STRING trafficserver CONFIG proxy.config.http.no_dns_just_forward_to_parent INT 1 ** parent.conf dest_host=liveshieldgroup001 method=GET parent=“1.1.1.1:80;" round_robin=consistent_hash qstring=ignore dest_host=vodshieldgroup001 method=GET parent=“1.1.1.1:80;" round_robin=consistent_hash qstring=ignore ** remap.conf map http://trafficserver_ram/ http://liveshieldgroup001/ map http://trafficserver_disk/ http://vodshieldgroup001/ If I do a GET-request, it fails in a “502 Server not found”: T 127.0.0.1:39062 -> 127.0.0.1:8080 [AP] #24 GET /test HTTP/1.1. Host: trafficserver_ram. X-Real-IP: 2.2.2.2. X-Forwarded-For: 2.2.2.2. Connection: upgrade. Accept: */*. . T 127.0.0.1:8080 -> 127.0.0.1:39062 [AP] #26 HTTP/1.1 502 Cannot find server.. Date: Tue, 11 Dec 2018 17:18:18 GMT. Connection: keep-alive. Server: ATS/7.1.2. Cache-Control: no-store. Content-Type: text/html. Content-Language: en. Content-Length: 2. . During this request I *do* see ATS doing DNS requests: 1 0.000000000 x.x.x.x → 8.8.8.8 DNS 78 Standard query 0x6a81 AAAA liveshieldgroup001 2 0.005837695 8.8.8.8 → x.x.x.x DNS 153 Standard query response 0x6a81 No such name AAAA liveshieldgroup001 SOA a.root-servers.net 3 0.005899611 x.x.x.x → 8.8.8.8 DNS 78 Standard query 0xf4f3 AAAA liveshieldgroup001 4 0.011621809 8.8.8.8 → x.x.x.x DNS 153 Standard query response 0xf4f3 No such name AAAA liveshieldgroup001 SOA a.root-servers.net I have checked with "traffic_ctl config diff” and see only the entries above as non-standard. Software used is the stock ATS from Ubuntu 18.04: trafficserver 7.1.2+ds-3 Am I hitting a bug, or missing something obvious? Thanks for any replies. -- Met vriendelijke groet, Theo Hoogerheide Lead Infrastructure Architect
