[TS-597] when using SplitDNS, the common dns setting is not honored

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.4
• Fix Version/s: 2.1.5
• Component/s: DNS
• Assignee: Leif Hedstrom
• Reporter: Zhao Yongming
• Created: 18/Dec/10 16:30
• Updated: 25/Jan/11 05:08
• Resolved: 23/Dec/10 18:53

Description

When using the trunk codes, and setup a splitdns.config without wild cast rule:
dest_domain=yahoo.com named="68.180.131.16"
dest_domain=inktomi.com named="68.180.131.16"
dest_domain=google.com named="8.8.8.8"
and records:
CONFIG proxy.config.http.no_dns_just_forward_to_parent INT 0
CONFIG proxy.config.dns.search_default_domains INT 1
CONFIG proxy.config.dns.splitDNS.enabled INT 1
CONFIG proxy.config.dns.max_dns_in_flight INT 2048
CONFIG proxy.config.dns.url_expansions STRING NULL
CONFIG proxy.config.dns.round_robin_nameservers INT 0
CONFIG proxy.config.dns.nameservers STRING 202.106.0.20
CONFIG proxy.config.dns.resolv_conf STRING NULL
CONFIG proxy.config.dns.validate_query_name INT 0
CONFIG proxy.config.diags.debug.tags STRING split.|dns.|hostdb.*

splitdns will just make the default dns server as 127.0.0.1 regards of the setting from /etc/resolv.conf etc

[Dec 17 21:11:10.792] Server

{47027459007840} DEBUG: (dns) DNSHandler::startEvent_sdns: on thread 0
[Dec 17 21:11:10.792] Server {47027459007840}

DEBUG: (dns) open_con: opening connection 68.180.131.16:53
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) random port = 51000
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) opening connection 68.180.131.16:53 SUCCEEDED for 0
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) DNSHandler::startEvent_sdns: on thread 0
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) open_con: opening connection 68.180.131.16:53
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) random port = 41996
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) opening connection 68.180.131.16:53 SUCCEEDED for 0
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) DNSHandler::startEvent_sdns: on thread 0
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) open_con: opening connection 8.8.8.8:53
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) random port = 26464
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) opening connection 8.8.8.8:53 SUCCEEDED for 0
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) DNSHandler::startEvent_sdns: on thread 0
[Dec 17 21:11:10.793] Server {47027459007840}

WARNING: bad '/etc/resolv.conf': no nameservers given
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) open_con: opening connection 127.0.0.1:0
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) random port = 50728
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) opening connection 127.0.0.1:0 SUCCEEDED for 0
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) DNSHandler::startEvent: on thread 0
[Dec 17 21:11:10.793] Server

{47027459007840} WARNING: bad configurations: no nameservers given
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) open_con: opening connection 127.0.0.1:0
[Dec 17 21:11:10.793] Server

{47027459007840} DEBUG: (dns) random port = 55442
[Dec 17 21:11:10.793] Server {47027459007840}

DEBUG: (dns) opening connection 127.0.0.1:0 SUCCEEDED for 0
[Dec 17 21:11:11.220] Server

{47027467839248}

NOTE: cache enabled

that is confusing, should be fixed.