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• 18:11, 26 July 2025 Adj talk contribs created page Notes on VM building (Created page with "What is says in the title. Here's what I run to start a Debian install with a virtio storage and network enabled UEFI virtual machine: sudo qemu-img create -f qcow2 /srv/vm-backing-store/padmeamadeus-0-vda.qcow2 64G sudo virt-install --name padmeamadeus-0 --memory 5120 --vcpus 2 --cpu host --cdrom ~/Downloads/debian-testing-amd64-20250726-netinst.iso --boot uefi --osinfo debian11 --disk /srv/vm-backing-store/padmeamadeus-0-vda.qcow2,bus=virtio --network bridge=br0,mod...")
• 14:25, 24 July 2025 Adj talk contribs created page Ceph performance metrics (Created page with "This has come up because the Sentinel 1 endpoint detection and response (EDR) agent is being installed across all our servers. In order to minimize potential customer impact we will: * Divide servers into three groups based on client IO sensitivity. Purely development environments being low sensitivity, and certain database workload being highly sensitive. S3 workloads will probably fall in the middle. * In each group, before S1 agent is installed and running, gather...")
• 22:07, 23 July 2025 Adj talk contribs created page Rotating applications' Ceph S3 credentials (Created page with "At $DAYJOB, some concern has been expressed that S3 client applications have no credential rotation. Which is probably fair. Here are some thoughts on the subject: * S3 bucket and object access is assigned to an abstraction called a "user." * Users identify themselves to the storage not by presenting their name, but my means of an "access key" and "secret key." The secret key is not sent across the wire to the S3 server. Instead it is used to sign any given request....")