20 lines
1.1 KiB
Markdown
20 lines
1.1 KiB
Markdown
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# Prep a cloud-init'ed Ceph OSD host
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Preliminary requirements:
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1. My standard VM make_ceph script which assumes I've created an LVM
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on the containing host for the data
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1. Clone and customize the make_ceph script to set the hostname, MAC
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address and location of the data LVM partition (logical volume)
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1. Add the intended IP and MAC address to my master hosts list for
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Ansible deployment, my DHCP servers and my primary DNS server.
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1. Run the make_ceph script to spin up the VM. in conjunction with the
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generic cloud-init user-data, this should install an SSH key for my
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ansible server
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1. Add the new machine to the ansible hosts file and run ansible.
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1. This role installs the ceph repo, cephadm, a root ssh key for Ceph
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administration.
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1. At this point you should be able to log into the ceph admin node
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and do a "ceph orch host add" with the new hostname and IP address.
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Note that Cephadm will see the allocated LVM partition as /dev/sda and
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make an OSD out of it automatically. An OSD crush reweight will be required
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to make it an active participant, since the initial crush weight is very low.
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