Configure Ceph Cluster in UBUNTU 18.0
Pre-requisites: 1. In this case, 3 mon and 3 mgr node (node01, node02, node03) will available. 2. OSD will be placed on a different node (node04 node05 node06) 3. Install Ceph to all Nodes from the Admin Node and copy keyrings to all nodes 4. For PG CALC use https://ceph.io/pgcalc/ STEPS TO CONFIGURE CEPH CLUSTER Add a user for Ceph admin on all Nodes and Grant root privilege to Ceph admin user just added above with sudo settings. And also install required packages to all # apt -y install openssh-server python-ceph # echo -e ‘Defaults:ubuntu !requiretty\nubuntu ALL = (root) NOPASSWD:ALL’ | tee /etc/sudoers.d/ceph # chmod 440 /etc/sudoers.d/ceph Passwordless between each node: #ssh-keygen #ssh-copy-id node01 #ssh-copy-id node02 #ssh-copy-id node03 #ssh-copy-id node04 #ssh-copy-id node05 Install Ceph to all Nodes from Admin Node (node01). So install below commands to Admin node (node1) # sudo apt -y install ceph-deploy ceph-common ceph-m...