4.1. Check Existing Installs

Ambari automatically installs the correct versions of the files that are necessary for Ambari and Hadoop to run. Versions other than the ones that Ambari uses can cause problems in running the installer, so remove any existing installs that do not match the following lists.

	RHEL/CentOS/Oracle Linux v5	RHEL/CentOS/Oracle Linux v6	SLES 11
Ambari Server	libffi 3.0.5-1.el5 python26 2.6.8-2.el5 python26-libs 2.6.8-2.el5 postgresql 8.4.13-1.el6_3 postgresql-libs 8.4.13-1.el6_3 postgresql-server 8.4.13-1.el6_3	postgresql 8.4.13-1.el6_3 postgresql-libs 8.4.13-1.el6_3 postgresql-server 8.4.13-1.el6_3	libpq5 9.1.5-0.2.1 postgresql 8.3.20-0.4.1 postgresql-server 8.3.20-0.4.1
Ambari Agent [^[a]	libffi 3.0.5-1.el5 python26 2.6.8-2.el5 python26-libs 2.6.8-2.el5	None	None
Nagios Server^[b]	nagios 3.5.0-99 nagios-devel 3.5.0-99 nagios-www 3.5.0-99 nagios-plugins 1.4.9-1	nagios 3.5.0-99 nagios-devel 3.5.0-99 nagios-www 3.5.0-99 nagios-plugins 1.4.9-1	nagios 3.5.0-99 nagios-devel 3.5.0-99 nagios-www 3.5.0-99 nagios-plugins 1.4.9-1
Ganglia Server^[c]	ganglia-gmetad 3.5.0-99 ganglia-devel 3.5.0-99 libganglia 3.5.0-99 ganglia-web 3.5.7-99 rrdtool 1.4.5-1.el5	ganglia-gmetad 3.5.0-99 ganglia-devel 3.5.0-99 libganglia 3.5.0-99 ganglia-web 3.5.7-99 rrdtool 1.4.5-1.el6	ganglia-gmetad 3.5.0-99 ganglia-devel 3.5.0-99 libganglia 3.5.0-99 ganglia-web 3.5.7-99 rrdtool 1.4.5-4.5.1
Ganglia Monitor^[d]	ganglia-gmond 3.5.0-99 libganglia 3.5.0-99	ganglia-gmond 3.5.0-99 libganglia 3.5.0-99	ganglia-gmond 3.5.0-99 libganglia 3.5.0-99
^[a]Installed on each host in your cluster. Communicates with the Ambari Server to execute commands. ^[b]The host that runs the Nagios server ^[c]The host that runs the Ganglia Server ^[d]Installed on each host in the cluster. Sends metrics data to the Ganglia Collector.

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