Users Guide

Linux Issues | Troubleshooting
OMNM 6.5.3 User Guide 729
Refer to the OpenManage Network Manager Installation Guide for Linux installation and upgrade
instructions and best practices.
Linux syslog not displaying
Application does not display syslog messages.
On Linux based platforms, under certain circumstances, a race condition at application startup
may impact syslog event/messaging functionality. If syslog messages are not displaying as expected,
please apply the following
workaround to restore functionality.
1) Shutdown the webserver.
2) Restart the appserver.
3) Start the webserver after the appserver's status shows 'ready'.
This process may need to be repeated if the server is restarted.
HA installation issue on Linux
Servers within HA system might fail on startup caused by the following exception:
ERROR [org.jgroups.protocols.UDP] (Timer-1,192.168.54.41:37377:) failed
sending message to null (69 bytes)
The recommended workaround is to modify a line with the run.sh script found in install_path/
oware/jboss-5.1/bin
From
JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=false"
To
JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true"
Servers restart is required.
Linux HA does not support IPv6 as default.
While IPv6 is supported on Windows HA, Linux HA does not support IPv6 as default. To acquire
IPv6 on Linux HA, it's suggested that users must follow these steps enable unicast within the
Mediation cluster. Apply the configuration changes to all Mediation servers.
1 Add the property oware.unicast=true to installed.properties file located in .../dorado/
owareapps/installprops/lib directory.
2 Locate .../oware/jboss/server/oware/deploy/cluster/jgroupschannelfactory.sar/META-INF/
jgroups-channelfactory-stacks.xml.
3 In the TCP section (you can search by <stack name="tcp"), comment this portion:
<!--Alternative 1: multicast-based automatic discovery. -->
<MPING timeout="3000"
num_initial_members="3"
mcast_addr="${jboss.partition.udpGroup:230.11.11.11}"
mcast_port="${jgroups.tcp.mping_mcast_port:45700}"
ip_ttl="${jgroups.udp.ip_ttl:2}"/>