Bug 731858
| Summary: | matahari agents fail to use broker from DNS SRV record | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Dave Johnson <dajohnso> |
| Component: | matahari | Assignee: | Russell Bryant <rbryant> |
| Status: | CLOSED ERRATA | QA Contact: | Dave Johnson <dajohnso> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 6.2 | CC: | matahari-maint, rbryant |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | matahari-0.4.3-1.el6 | Doc Type: | Bug Fix |
| Doc Text: |
No description required
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-12-06 11:40:05 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 743047 | ||
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Description
Dave Johnson
2011-08-18 20:01:31 UTC
I merged a patch to fix this upstream: https://github.com/matahari/matahari/commit/bc4fc3f8cc2961329666d5e54248e76401383fe0 This still doesn't seem to work with or without passing -D <domain> [root@dell-pem610-01 matahari]# ping broker.test.com PING broker.test.com (10.16.65.39) 56(84) bytes of data. 64 bytes from broker.test.com (10.16.65.39): icmp_seq=1 ttl=64 time=1.68 ms [root@dell-pem610-01 matahari]# dnsdomainname test.com [root@dell-pem610-01 matahari]# hostname -f agent2.test.com [root@dell-pem610-01 matahari]# dig SRV _matahari._tcp.test.com ; <<>> DiG 9.7.3-P3-RedHat-9.7.3-6.P3.el6 <<>> SRV _matahari._tcp.test.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46571 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2 ;; QUESTION SECTION: ;_matahari._tcp.test.com. IN SRV ;; ANSWER SECTION: _matahari._tcp.test.com. 86400 IN SRV 1 1 49000 broker.test.com. ;; AUTHORITY SECTION: test.com. 172800 IN NS ns.test.com. ;; ADDITIONAL SECTION: broker.test.com. 172800 IN A 10.16.65.39 ns.test.com. 172800 IN A 10.16.120.65 ;; Query time: 1 msec ;; SERVER: 10.16.120.65#53(10.16.120.65) ;; WHEN: Mon Aug 29 13:44:59 2011 ;; MSG SIZE rcvd: 125 [root@dell-pem610-01 matahari]# /usr/sbin/matahari-qmf-hostd -vvv mh_connect: Could not resolve SRV record for _matahari._tcp. mh_connect: Trying: amqp:tcp:localhost:49000 2011-08-29 13:43:28 warning Connect failed: Connection refused 2011-08-29 13:43:28 warning Connection closed 2011-08-29 13:43:31 warning Connect failed: Connection refused 2011-08-29 13:43:31 warning Connection closed [root@dell-pem610-01 matahari]# /usr/sbin/matahari-qmf-hostd -vvv -D test.com mh_connect: Could not resolve SRV record for _matahari._tcp. mh_connect: Trying: amqp:tcp:localhost:49000 2011-08-29 13:45:31 warning Connect failed: Connection refused 2011-08-29 13:45:31 warning Connection closed comment 4 should have included this as well [root@dell-pem610-01 matahari]# /usr/sbin/matahari-qmf-hostd -vvv -b broker.test.com mh_connect: Trying: amqp:tcp:broker.test.com:49000 mh_uuid: Got uuid: 9c12c5c52efedcfa7d43d68400000040 mh_hostname: Got hostname: agent2.test.com mh_uuid: Got uuid: 9c12c5c52efedcfa7d43d68400000040 mh_hostname: Got hostname: agent2.test.com mainloop_add_qmf: Added source: 1 heartbeat: Updating stats: 1 5 mh_hostname: Got hostname: agent2.test.com run: Starting agent mainloop ^C2011-08-29 13:51:39 warning Connection [10.16.66.71:54955-broker.test.com:49000] closed [root@dell-pem610-01 matahari]# rpm -qa | grep matahari matahari-lib-0.4.2-9.el6.x86_64 matahari-agent-lib-0.4.2-9.el6.x86_64 matahari-host-0.4.2-9.el6.x86_64 Please try this: # matahari-qmf-hostd -vvv -b test.com -D I verified that the code in Matahari is correct and that the failure occurs when we do not get a domain name from sigar.
I looked at the sigar code and it is simply using getdomainname(). So, the system must have it set for this to work. You can check it via the domainname command:
# domainname
You can set it (temporarily, anyway) via the same command:
# domainname example.com
and then it works as expected.
However, it is worth noting that domainname and dnsdomainname are not the same thing, and dnsdomainname is really what we want for this. I think what sigar is providing is correct, but it's just not the information we want. I will need to figure out how to most appropriately get the dnsdomainname and update Matahari to use that, instead.
I have posted a patch to the mailing list. I'm going to wait a little bit for feedback before I merge to the upstream repo. https://github.com/russellb/matahari/commit/3f9905a21f7147e77313e0821a13b2f87e007ee1 Well, I was going to wait longer but accidentally pushed this while pushing something else. So, it's done unless someone has additional feedback. https://github.com/matahari/matahari/commit/de1d1425a7e0b0a9e3c1c5e49d7c3d3d7a2dd8b4 good 2 go in v0.4.2-2 [root@agent ~]# /usr/sbin/matahari-qmf-hostd -vvv mh_hostname: Got hostname: agent.test.com mh_dnsdomainname: Got dnsdomainname: 'test.com' mh_connect: SRV query successful: _matahari._tcp.test.com mh_connect: Trying: amqp:tcp:broker.test.com:49000 mh_os_uuid: Got uuid: ce76da54cbe7c1d9ed1d44ce00000023 mh_hostname: Got hostname: agent.test.com mh_os_uuid: Got uuid: ce76da54cbe7c1d9ed1d44ce00000023 mh_hostname: Got hostname: agent.test.com mainloop_add_qmf: Added source: 1 heartbeat: Updating stats: 1 5 mh_hostname: Got hostname: agent.test.com
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Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2011-1569.html |