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Comprehensive docs covering CLI reference, VMFile.kdl format, architecture, library API, tutorials, and advanced topics. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
284 lines
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<main>
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<h1 id="creating-a-vm-imperatively"><a class="header" href="#creating-a-vm-imperatively">Creating a VM Imperatively</a></h1>
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<p>This tutorial walks through the full lifecycle of a VM using individual vmctl commands.</p>
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<h2 id="create-a-vm"><a class="header" href="#create-a-vm">Create a VM</a></h2>
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<pre><code class="language-bash">vmctl create \
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--name tutorial \
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--image-url https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img \
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--vcpus 2 \
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--memory 2048 \
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--ssh-key ~/.ssh/id_ed25519.pub
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</code></pre>
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<p>This downloads the image (cached for future use), creates a QCOW2 overlay, generates a cloud-init ISO with your SSH key, and registers the VM.</p>
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<h2 id="start-it"><a class="header" href="#start-it">Start It</a></h2>
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<pre><code class="language-bash">vmctl start tutorial
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</code></pre>
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<h2 id="check-status"><a class="header" href="#check-status">Check Status</a></h2>
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<pre><code class="language-bash">vmctl list
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</code></pre>
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<pre><code class="language-text">NAME BACKEND VCPUS MEM NETWORK PID SSH
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tutorial qemu 2 2048 user 12345 10042
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</code></pre>
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<p>For detailed info:</p>
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<pre><code class="language-bash">vmctl status tutorial
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</code></pre>
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<h2 id="connect-via-ssh"><a class="header" href="#connect-via-ssh">Connect via SSH</a></h2>
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<pre><code class="language-bash">vmctl ssh tutorial
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</code></pre>
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<p>vmctl waits for SSH to become available (cloud-init needs a moment to set up the user), then drops you into a shell.</p>
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<h2 id="suspend-and-resume"><a class="header" href="#suspend-and-resume">Suspend and Resume</a></h2>
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<p>Pause the VM without shutting it down:</p>
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<pre><code class="language-bash">vmctl suspend tutorial
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</code></pre>
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<p>Resume it:</p>
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<pre><code class="language-bash">vmctl resume tutorial
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</code></pre>
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<p>The VM continues from exactly where it was, no reboot needed.</p>
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<h2 id="stop-the-vm"><a class="header" href="#stop-the-vm">Stop the VM</a></h2>
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<pre><code class="language-bash">vmctl stop tutorial
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</code></pre>
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<p>This sends an ACPI power-down signal. If the guest doesn't shut down within 30 seconds, vmctl sends SIGTERM.</p>
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<p>To change the timeout:</p>
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<pre><code class="language-bash">vmctl stop tutorial --timeout 60
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</code></pre>
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<h2 id="restart"><a class="header" href="#restart">Restart</a></h2>
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<p>A stopped VM can be started again:</p>
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<pre><code class="language-bash">vmctl start tutorial
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</code></pre>
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<h2 id="destroy"><a class="header" href="#destroy">Destroy</a></h2>
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<p>When you're done, clean up everything:</p>
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<pre><code class="language-bash">vmctl destroy tutorial
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</code></pre>
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<p>This stops the VM (if running), removes the overlay, cloud-init ISO, and all work directory files, and unregisters the VM from the store.</p>
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