Bonding in active-backup using linux bridges on Ubuntu 18

Because this was WAAYY more difficult to find any decent doco on that I had ever expected, here is what worked for me I deleted the netplan config file at /etc/netplan/01-netcfg.yaml rm /etc/netplan/01-netcfg.yaml Ensure that ‘bonding’ appears in /etc/modules (I’s not here by default) echo bonding >> /etc/modules   Here is /etc/network/interfaces source-directory /etc/network/interfaces.d auto […]

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Ceph Nautilus – “Required devices (block and data) not present for bluestore”

When using the new ceph-volume scan and activate commands on ceph Nautilus after an upgrade from Luminous I was getting the following message [root@ceph2 ~]# ceph-volume simple activate –all –> activating OSD specified in /etc/ceph/osd/37-11af5440-dadf-40e3-8924-2bbad3ee5b58.json Running command: /bin/ln -snf /dev/sdh2 /var/lib/ceph/osd/ceph-37/block Running command: /bin/chown -R ceph:ceph /dev/sdh2 Running command: /bin/systemctl enable ceph-volume@simple-37-11af5440-dadf-40e3-8924-2bbad3ee5b58 Running command: /bin/ln […]

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