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Description of problem: the ceph 2.0 admin guide chapter 6.1: https://access.qa.redhat.com/documentation/en/red-hat-ceph-storage/2/administration-guide/#adding_a_monitor We point the user to do the prerequisites from the install guide, however the ubuntu install guide section 2.2: https://access.qa.redhat.com/documentation/en/red-hat-ceph-storage/2/installation-guide-for-ubuntu/#enabling_ceph_repositories This section has one command missing in all the repos. The user should do : "sudo apt-get update" after enabling the repos on all the nodes $ sudo bash -c 'umask 0077; echo deb https://customername:customerpasswd@rhcs.download.redhat.com/2-release/MON $(lsb_release -sc) main | tee /etc/apt/sources.list.d/MON.list' $ sudo bash -c 'wget -O - https://www.redhat.com/security/fd431d51.txt | apt-key add -' "sudo apt-get update" <--------- add it here We are aware that this is not needed in a new cluster install from ceph-ansible, but it is only needed when adding a MON or OSD to an existing ckuster from ceph-ansible. However adding this step will not cause any change to the nodes, it will only download the index files from the repos. Hence please add this command after enabling any repo. Thanks, Tejas
Thanks Bara. Verified the doc. Thanks, Tejas