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When you attempt to install or upgrade one of the Nagios products you receive the following error:
ERROR: Please enable the 'Optional' repo for your system in:
You need to add the Optional repository so that Nagios XI can install the necessary prerequisites using the commands below:
yum install -y yum-utils
yum-config-manager --enable ol7_optional_latest
That's it! You should be able to run the installer again and complete your installation.
For any support related questions please visit the Nagios Support Forums at:
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