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Welcome to the CentOS-7_OpenNMS_Install wiki!

###OpenNMS Install###

###Get Java RPM and GPG key###

cd ~ wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u60-b27/jdk-8u60-linux-x64.rpm" ###Install Java####

yum localinstall jdk-8u60-linux-x64.rpm

###Install RRDTool###

yum install rrdtool

###Get OpenNMS RPM and GPG Key###

rpm -Uvh http://yum.opennms.org/repofiles/opennms-repo-stable-rhel7.noarch.rpm rpm --import http://yum.opennms.org/OPENNMS-GPG-KEY

###Install OpenNMS###

yum install opennms

###Initialize postgresql DB###

postgresql-setup initdb

###Start postgresql and enable at boot###

systemctl start postgresql systemctl enable postgresql

###Create users, database, and set psswd for postgres###

su - postgres createuser -P opennms createdb -O opennms opennms psql -c "ALTER USER postgres WITH PASSWORD 'whatever password you want';" exit

###Edit posgresql config to trust connections### "may not be necessary"

vi /var/lib/pgsql/data/pg_hba.conf

###only change bits ident or md5 to look like this### local all all trust

host all all 127.0.0.1/32 trust

host all all ::1/128 trust

###Reload postgresql service####

systemctl reload postgresql

###Edit OpenNMS config for user and passwords we configured earlier###

vi /opt/opennms/etc/opennms-datasources.xml

###Places to change are marked by this###

###Configure postgresql Database###

vi /var/lib/pgsql/data/postgresql.conf

#------------------------------------------------------------------------------

CONNECTIONS AND AUTHENTICATION

#------------------------------------------------------------------------------

listen_addresses = 'localhost' max_connections = 256

#------------------------------------------------------------------------------

RESOURCE USAGE (except WAL)

#------------------------------------------------------------------------------

shared_buffers = 1024MB

###Set up java for OpenNMS### #from the /opt/ directory#

opennms/bin/runjava -S /usr/java/latest/bin/java

###Initialize and Upgrade OpenNMS###

opt/opennms/bin/install -dis

###Start and Enable OpenNMS at boot###

systemctl start opennms systemctl enable opennms