[
https://issues.apache.org/jira/browse/AURORA-761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171582#comment-14171582
]
Kevin Sweeney commented on AURORA-761:
--------------------------------------
DNS service discovery supports returning multiple records per query. Your main
issue will be with TTLs
e.g.
{noformat}
% dig -t srv _ldap._tcp.rescomp.berkeley.edu
; <<>> DiG 9.9.5-3-Ubuntu <<>> -t srv _ldap._tcp.rescomp.berkeley.edu
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11920
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 2, ADDITIONAL: 11
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;_ldap._tcp.rescomp.berkeley.edu. IN SRV
;; ANSWER SECTION:
_ldap._tcp.rescomp.berkeley.edu. 10800 IN SRV 0 10 389
ldap3.Rescomp.Berkeley.EDU.
_ldap._tcp.rescomp.berkeley.edu. 10800 IN SRV 0 10 389
ldap4.Rescomp.Berkeley.EDU.
_ldap._tcp.rescomp.berkeley.edu. 10800 IN SRV 0 10 389
ldap5.Rescomp.Berkeley.EDU.
_ldap._tcp.rescomp.berkeley.edu. 10800 IN SRV 0 10 389
ldap6.Rescomp.Berkeley.EDU.
_ldap._tcp.rescomp.berkeley.edu. 10800 IN SRV 0 10 389
ldap1.Rescomp.Berkeley.EDU.
_ldap._tcp.rescomp.berkeley.edu. 10800 IN SRV 0 10 389
ldap2.Rescomp.Berkeley.EDU.
;; AUTHORITY SECTION:
Rescomp.Berkeley.EDU. 3600 IN NS adns1.Berkeley.EDU.
Rescomp.Berkeley.EDU. 3600 IN NS adns2.Berkeley.EDU.
;; ADDITIONAL SECTION:
ldap1.Rescomp.Berkeley.EDU. 10800 IN A 169.229.70.152
ldap2.Rescomp.Berkeley.EDU. 10800 IN A 169.229.70.78
ldap3.Rescomp.Berkeley.EDU. 10800 IN A 169.229.70.155
ldap4.Rescomp.Berkeley.EDU. 10800 IN A 169.229.70.149
ldap5.Rescomp.Berkeley.EDU. 10800 IN A 169.229.221.136
ldap6.Rescomp.Berkeley.EDU. 10800 IN A 169.229.221.141
adns1.Berkeley.EDU. 60894 IN A 128.32.136.3
adns1.Berkeley.EDU. 3600 IN AAAA 2607:f140:ffff:fffe::3
adns2.Berkeley.EDU. 60894 IN A 128.32.136.14
adns2.Berkeley.EDU. 3600 IN AAAA 2607:f140:ffff:fffe::e
;; Query time: 18 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Tue Oct 14 14:40:46 PDT 2014
;; MSG SIZE rcvd: 560
{noformat}
> Provide a proxy for generic service discovery
> ---------------------------------------------
>
> Key: AURORA-761
> URL: https://issues.apache.org/jira/browse/AURORA-761
> Project: Aurora
> Issue Type: Story
> Components: Service Discovery, Usability
> Reporter: Bill Farner
> Priority: Minor
>
> While {{Announcer}} provides service registration, we lack a cross-cutting
> answer for service discovery. There are well-known libraries that will do it
> (e.g. finagle), but we need an answer for others. Marathon, for example,
> provides a script called {{haproxy_marathon_bridge}} that reloads
> configuration of HAProxy for this purpose. We could do something similar
> with a mixin {{Process}} that dynamically routes an inbound port to a
> serverset path in ZooKeeper.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
