Bug 731534 - matahari agents unable to connect to remote broker
Summary: matahari agents unable to connect to remote broker
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: matahari
Version: 6.2
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: Andrew Beekhof
QA Contact: Dave Johnson
Depends On:
TreeView+ depends on / blocked
Reported: 2011-08-17 19:56 UTC by Dave Johnson
Modified: 2011-12-06 11:39 UTC (History)
3 users (show)

Fixed In Version: matahari-0.4.2-7.el6
Doc Type: Bug Fix
Doc Text:
No description required
Clone Of:
Last Closed: 2011-12-06 11:39:57 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:1569 normal SHIPPED_LIVE matahari bug fix and enhancement update 2011-12-06 00:39:06 UTC

Description Dave Johnson 2011-08-17 19:56:14 UTC
Description of problem:
I installed the matahari agent on a system to connect to a remote broker but it is not working.  /var/log/messages has an error stating: 

    host[7962]: mh_parse_options: Broker 'ibm-hs21-03.lab.bos.redhat.com' 
         is not resolvable - ignoring

I get the same thing when configuring the agents to use an IP address for the broker:

    host[7981]: mh_parse_options: Broker '' is not 
         resolvable - ignoring

I tried all of the agents just to be sure.  I also turned iptables off and ran tcpdump on the broker, the packets never make it there.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.  Install/start a matahari broker
2.  Install a agent
Actual results:
Fails to resolve

Expected results:
Connection to remote broker

Additional info:

[root@hp-dl2x170g6-02 init.d]# tail -f /var/log/messages
Aug 17 15:39:31 hp-dl2x170g6-02 host[7962]: mh_parse_options: Broker 'ibm-hs21-03.lab.bos.redhat.com' is not resolvable - ignoring
Aug 17 15:40:56 hp-dl2x170g6-02 host[7981]: mh_parse_options: Broker '' is not resolvable - ignoring

[root@hp-dl2x170g6-02 init.d]# ping
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=63 time=0.221 ms
64 bytes from icmp_seq=2 ttl=63 time=0.204 ms
--- ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1537ms
rtt min/avg/max/mdev = 0.204/0.212/0.221/0.016 ms

[root@hp-dl2x170g6-02 init.d]# ping ibm-hs21-03.lab.bos.redhat.com
PING ibm-hs21-03.lab.bos.redhat.com ( 56(84) bytes of data.
64 bytes from ibm-hs21-03.lab.bos.redhat.com ( icmp_seq=1 ttl=63 time=0.321 ms
64 bytes from ibm-hs21-03.lab.bos.redhat.com ( icmp_seq=2 ttl=63 time=0.194 ms

[root@hp-dl2x170g6-02 init.d]# cat /etc/sysconfig/matahari
# Connect to a broker on the named host
# If this is not defined, agents will attempt to connect to localhost 
#  and/or the contents of a _matahari._tcp SRV record if it exists

# Connect to a broker on a non-standard port

# Other options that all agents should observe

# Other options that all consoles should observe

# Per agent options
# host_AGENT_ARGS=...
# network_AGENT_ARGS=...

# Per console options
# sysconfig_CONSOLE_ARGS=...

Comment 2 Dave Johnson 2011-08-17 20:30:02 UTC
This appears to have been introduced in v0.4.2-3

Comment 3 Dave Johnson 2011-08-17 20:33:48 UTC
Ahhh, sorry for the spam, just noticed that I failed to finish the steps to reproduce so let me try again

Steps to Reproduce:
1.  Install/start a matahari broker
2.  Install a agent on a separate system from broker
3.  Configure agent to connect to remote broker in step 1
4.  Start agent
5.  See 'host unresolvable' error in /var/log/messages

Comment 4 Andrew Beekhof 2011-08-18 03:42:48 UTC
A related patch has been committed upstream: https://github.com/beekhof/matahari/commit/ee9336f

Comment 5 Andrew Beekhof 2011-08-18 04:11:23 UTC
With no argument:

[root@pcmk-1 ~]# matahari-qmf-hostd -vvv
mh_domainname: Got domainname: matahariproject.org
mh_connect: SRV record resolved to: www.matahariproject.org
mh_connect: Trying: amqp:tcp:localhost:49000
2011-08-18 00:44:43 warning Connect failed: Connection refused
2011-08-18 00:44:43 warning Connection  closed

With a valid broker:

[root@pcmk-1 ~]# matahari-qmf-hostd -vvv -b www.beekhof.net
mh_connect: Trying: amqp:tcp:www.beekhof.net:49000

With an invalid broker:

[root@pcmk-1 ~]# matahari-qmf-hostd -vvv -b www.beekhofs.net
mh_parse_options: Broker 'www.beekhofs.net' is not resolvable - ignoring

Comment 8 Dave Johnson 2011-08-19 19:52:58 UTC
good 2 go in v0.4.2-7

Comment 9 Russell Bryant 2011-11-16 21:43:37 UTC
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    New Contents:
No description required

Comment 10 errata-xmlrpc 2011-12-06 11:39:57 UTC
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.


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