Posts tagged "devops"
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VM Snapshots in qcontroller: Go Back to When Everything Worked
qcontroller can now snapshot a running VM and restore it later - RAM, devices, disk, everything. Here's why I wanted it, and the one change to disk attachment that made the implementation almost trivial.
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-hda vs virtio-blk: Match the Disk Bus to the Guest Image
qcontroller booted Ubuntu cloud images without problems, then broke on 26.04. The reason: the image switched to initrdless boot, and my -hda (SATA) disk no longer had a driver. Here's how I tracked it down.
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Bootstrapping Kubernetes Before the Registry Exists - Pre-Tagging Images for containerd
Bootstrap a Kubernetes cluster before the private registry exists. Pre-tag side-loaded container images with the future registry path so Helm values, containerd cache, and kubelet pulls all reference the same string.
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Network Namespaces: Isolating VM Networking
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Running QEMU VMs on ARM64: UEFI Requirements
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Local DNS Resolution for Docker Containers in Development
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Introducing qcontroller: Declarative VM Management with QEMU and Go
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QEMU QAPI Client for Go — Native Code-Gen Straight from QEMU
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Automating Bridge + TAP Networking with a Go Binary (No Bash, No Fuss)
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How to customize PostgreSQL Docker Initialization the Right Way
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Setting Up VM Networking on Linux: Bridges, TAPs, and More
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Setting Up a Simple Two-Node Kubernetes Cluster in No Time
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QEMU networking on macOS
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Automating the Building of VMs with Packer
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Simplify networking with socat