Hi,
In the latest savanna launched hadoop clusters we are seeing ganglia issues -
ganglia is initially down and the metrics are either not displayed or partially
displayed in the web console. We see errors of the following type in the linux
messages log (/var/log/messages):
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [tcpext_tcploss_percentage] in the python module
[netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [tcp_retrans_percentage] in the python module
[netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [tcp_outsegs] in the python module [netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [tcp_insegs] in the python module [netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [udp_indatagrams] in the python module
[netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [udp_outdatagrams] in the python module
[netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [udp_inerrors] in the python module [netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [udp_rcvbuferrors] in the python module
[netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [tcpext_listendrops] in the python module
[netstats].#012
Jan 8 15:45:22 test2-master-001 /usr/sbin/gmond[1280]: [PYTHON] Can't call the
metric handler function for [tcp_attemptfails] in the python module
[netstats].#012
Jan 8 15:45:28 test2-master-001 modprobe: FATAL: Error inserting ipv6
(/lib/modules/2.6.32-358.el6.x86_64/kernel/net/ipv6/ipv6.ko): Key was rejected
by service
Jan 8 15:45:28 test2-master-001 kernel: Module signature verification failed
I have manually shutdown the gmond and gmetad processes on test2-master-001
and restarted the Ganglia service from the Ambari console. That does appear to
bring up the Ganglia service successfully (green dot) and clear up the error
messages above, but the console is still not displaying certain metrics:
Host info:
Centos 6.4 host with the following kernel etc:
[root@test2-master-001 ~]# uname -a
Linux test2-master-001 2.6.32-358.el6.x86_64 #1 SMP Fri Feb 22 00:31:26
UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Savanna is an openstack project for deploying hadoop, and we are using centos
6.4 images pre-configured with a number of packages, but the ganglia packages
are downloaded by ambari during the installation which I suppose explains why
this issue has appeared lately - we had no ganglia issues prior to the last
week or so (new ganglia packages?)
Any ideas?
— Jon
--
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.
