This guide explains how to install OpenManage on CentOS7, CentOS8-Stream and AlmaLinux9 systems


The following instructions are integrated in the script that could be found at: cld-foreman:/root/repo/dell-om-install-<versione_date>.sh Please update it accordingly in the event that the instructions need to be revised


Enable crb repo (this should be needed only on AlmaLinux9):



yum install yum-utils

/usr/bin/yum-config-manager --enable crb

yum clean all



Install latest repo


yum -y install perl
wget -q -O script.sh http://linux.dell.com/repo/hardware/dsu/bootstrap.cgi
sh script.sh


We now install the srvadmin-all metapackage alongside with dependencies and other needed packages

yum -y install srvadmin-all net-snmp OpenIPMI libxslt

If you want to install the Dell System Update, use the following command:

yum -y install dell-system-update

Replace tomcat port from 1311 to 1031:

cd /opt/dell/srvadmin/lib64/openmanage/apache-tomcat/conf/
sed -i 's/port=\"1311\"/port=\"1031\"/' server.xml


Setup smtp server:


cd /opt/dell/srvadmin/etc/openmanage/oma/ini/
grep "preferences.system.smtp" oma.properties
if [ $? -eq 0 ]; then
   sed -i 's/^preferences.system.smtp=.*/preferences.system.smtp=smtp.pd.infn.it/' oma.properties
else
   echo "preferences.system.smtp=smtp.pd.infn.it" >> oma.properties
fi



Setup DNS suffix

cd /opt/dell/srvadmin/etc/openmanage/oma/ini/
grep "preferences.system.dnssuffix" oma.properties
if [ $? -eq 0 ]; then
   sed -i 's/^preferences.system.dnssuffix=.*/preferences.system.dnssuffix=pd.infn.it/' oma.properties
else
   echo "preferences.system.dnssuffix=pd.infn.it" >> oma.properties
fi



Setup snmp daemon

sed -i.ORIG 's/^syslocation .*/syslocation Sala CED @ DFA Padova/' /etc/snmp/snmpd.conf
echo "# Allow Systems Management Data Engine SNMP to connect to snmpd using SMUX" >> /etc/snmp/snmpd.conf
echo "smuxpeer .1.3.6.1.4.1.674.10892.1" >> /etc/snmp/snmpd.conf
echo "view all included .1" >> /etc/snmp/snmpd.conf


we must override this previous access rule:

grep -e '^access.*notConfigGroup' /etc/snmp/snmpd.conf
if [ $? -eq 0 ]; then
   sed -i 's/^access.*notConfigGroup/#access.*notConfigGroup/' /etc/snmp/snmpd.conf
fi
echo "access notConfigGroup \"\" any noauth exact all none none" >> /etc/snmp/snmpd.conf



Enable and fire up the needed services

systemctl start ipmi
systemctl start snmpd
systemctl enable ipmi
systemctl enable snmpd
/opt/dell/srvadmin/sbin/srvadmin-services.sh enable
/opt/dell/srvadmin/sbin/srvadmin-services.sh enable dsm_sa_snmpd
/etc/init.d/dataeng enablesnmp
/opt/dell/srvadmin/sbin/srvadmin-services.sh start


Finally open needed ports on client firewall:

while read i
do
  firewall-cmd --add-port=${i}
  firewall-cmd --permanent --add-port=${i}
done << EOF
8649/tcp
1031/tcp
161/udp
EOF