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Cake day: June 20th, 2023

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  • Ceph works best if you have identical osd, quantity, type and capacity across the cluster, also works best on a 3+ node cluster.

    I ran a mixed sata SSD/HDD 256gb/4tb cluster and it was always a bit pants. Now I have 7x1tb SSD per node (4nodes) and it works fantastic now.

    Proxmox uses replica 3/2 failure at host level but you may find that EC works better for your mixed infra as you noticed you can’t meed the 3 host failure and so setting to osd failure level means data may be kept on a single host so would need to traverse the network to the other machine.

    You may also need more than a single 10Gb nic too as you might start hitting bandwidth issues.







  • IPv6 doesn’t support NAT… Or am I woefully out of date.

    But your home router will just firewall like it does already but you don’t have NAT as a simple fall back for “security”. It does make running internal services much easier as you no long need to port forward. So you can run two webservers on port 80 and they be bother allowed inbound without doing horrible load balance or NAT translation.