I installed and started Orion Context Broker (version 2.2.0) on Centos 7 OS with these commands:
$ sudo wget -P /etc/yum.repos.d/ https://nexus.lab.fiware.org/repository/raw/public/repositories/el/7/x86_64/fiware-release.repo
$ sudo yum -y install contextBroker
$ sudo service contextBroker start
When I reboot the Centos VM, the Orion doesn't restart automatically and neither by using command script. The workaround is to remove and reinstall it. Is my installation procedure correct? Thank you for your support.