Adolfo Delorenzo
8d25e1890e
Implement atomic OS updates via A/B partition scheme with automatic rollback. GRUB bootloader manages slot selection with a 3-attempt boot counter that auto-rolls back on repeated health check failures. GRUB boot config: - A/B slot selection with boot_counter/boot_success env vars - Automatic rollback when counter reaches 0 (3 failed boots) - Debug, emergency shell, and manual slot-switch menu entries Disk image (refactored): - 4-partition GPT layout: EFI + System A + System B + Data - GRUB EFI/BIOS installation with graceful fallbacks - Both system partitions populated during image creation Update agent (Go, zero external deps): - pkg/grubenv: read/write GRUB env vars (grub-editenv + manual fallback) - pkg/partition: find/mount/write system partitions by label - pkg/image: HTTP download with SHA256 verification - pkg/health: post-boot checks (containerd, API server, node Ready) - 6 CLI commands: check, apply, activate, rollback, healthcheck, status - 37 unit tests across all 4 packages Deployment: - K8s CronJob for automatic update checks (every 6 hours) - ConfigMap for update server URL - Health check Job for post-boot verification Build pipeline: - build-update-agent.sh compiles static Linux binary (~5.9 MB) - inject-kubesolo.sh includes update agent in initramfs - Makefile: build-update-agent, test-update-agent, test-update targets Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
package cmd
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import (
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"fmt"
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"github.com/portainer/kubesolo-os/update/pkg/grubenv"
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)
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// Status displays the current A/B slot configuration and boot state.
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func Status(args []string) error {
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opts := parseOpts(args)
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env := grubenv.New(opts.GrubenvPath)
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vars, err := env.ReadAll()
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if err != nil {
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return fmt.Errorf("reading GRUB environment: %w", err)
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}
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activeSlot := vars["active_slot"]
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bootCounter := vars["boot_counter"]
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bootSuccess := vars["boot_success"]
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passiveSlot := "B"
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if activeSlot == "B" {
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passiveSlot = "A"
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}
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fmt.Println("KubeSolo OS — A/B Partition Status")
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fmt.Println("───────────────────────────────────")
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fmt.Printf(" Active slot: %s\n", activeSlot)
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fmt.Printf(" Passive slot: %s\n", passiveSlot)
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fmt.Printf(" Boot counter: %s\n", bootCounter)
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fmt.Printf(" Boot success: %s\n", bootSuccess)
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if bootSuccess == "1" {
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fmt.Println("\n ✓ System is healthy (boot confirmed)")
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} else if bootCounter == "0" {
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fmt.Println("\n ✗ Boot counter exhausted — rollback will occur on next reboot")
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} else {
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fmt.Printf("\n ⚠ Boot pending verification (%s attempts remaining)\n", bootCounter)
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}
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return nil
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}
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