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mw/kubernetes: add configurable TTL (#995)

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* mw/kubernetes: add configurable TTL

Add ttl option to kubernetes. This defaults to 5s but allows
configuration to go up to 3600.

Configure the tests so that a few actually check for the 5s, while the
rest use the TTL of 303 which is ignored by the checking code.

Fixes #935

* fix tests

* and more
This commit is contained in:
Miek Gieben 2017-08-27 01:32:46 +01:00 • committed by Yong Tang
parent 01f6e8cba5
commit 4049ed4f4b
6 changed files with 90 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

32
middleware/kubernetes/handler_test.go
View file

@ -16,33 +16,33 @@ var dnsTestCases = map[string](test.Case){
Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1"),
test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
},
},
"A Service (wildcard)": {
Qname: "svc1.*.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("svc1.*.svc.cluster.local. 0 IN A 10.0.0.1"),
test.A("svc1.*.svc.cluster.local. 5 IN A 10.0.0.1"),
},
},
"SRV Service (wildcard)": {
Qname: "svc1.*.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("svc1.*.svc.cluster.local. 0 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1")},
Answer: []dns.RR{test.SRV("svc1.*.svc.cluster.local. 303 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 303 IN A 10.0.0.1")},
},
"SRV Service (wildcards)": {
Qname: "*.any.svc1.*.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{test.SRV("*.any.svc1.*.svc.cluster.local. 0 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1")},
Answer: []dns.RR{test.SRV("*.any.svc1.*.svc.cluster.local. 303 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 303 IN A 10.0.0.1")},
},
"A Service (wildcards)": {
Qname: "*.any.svc1.*.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("*.any.svc1.*.svc.cluster.local. 0 IN A 10.0.0.1"),
test.A("*.any.svc1.*.svc.cluster.local. 303 IN A 10.0.0.1"),
},
},
"SRV Service Not udp/tcp": {
@ -56,37 +56,37 @@ var dnsTestCases = map[string](test.Case){
Qname: "_http._tcp.svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.SRV("_http._tcp.svc1.testns.svc.cluster.local. 0 IN SRV 0 100 80 svc1.testns.svc.cluster.local."),
test.SRV("_http._tcp.svc1.testns.svc.cluster.local. 303 IN SRV 0 100 80 svc1.testns.svc.cluster.local."),
},
Extra: []dns.RR{
test.A("svc1.testns.svc.cluster.local. 0 IN A 10.0.0.1"),
test.A("svc1.testns.svc.cluster.local. 303 IN A 10.0.0.1"),
},
},
"A Service (Headless)": {
Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.2"),
test.A("hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.3"),
test.A("hdls1.testns.svc.cluster.local. 303 IN A 172.0.0.2"),
test.A("hdls1.testns.svc.cluster.local. 303 IN A 172.0.0.3"),
},
},
"SRV Service (Headless)": {
Qname: "_http._tcp.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 0 IN SRV 0 50 80 172-0-0-2.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 0 IN SRV 0 50 80 172-0-0-3.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 303 IN SRV 0 50 80 172-0-0-2.hdls1.testns.svc.cluster.local."),
test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 303 IN SRV 0 50 80 172-0-0-3.hdls1.testns.svc.cluster.local."),
},
Extra: []dns.RR{
test.A("172-0-0-2.hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.2"),
test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 0 IN A 172.0.0.3"),
test.A("172-0-0-2.hdls1.testns.svc.cluster.local. 303 IN A 172.0.0.2"),
test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 303 IN A 172.0.0.3"),
},
},
"CNAME External": {
Qname: "external.testns.svc.cluster.local.", Qtype: dns.TypeCNAME,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.CNAME("external.testns.svc.cluster.local. 0 IN CNAME ext.interwebs.test."),
test.CNAME("external.testns.svc.cluster.local. 303 IN CNAME ext.interwebs.test."),
},
},
"AAAA Service (existing service)": {