Upgrading VayuPress

VayuPress supports two upgrade paths. Both are sovereign — nothing phones home, and the privilege to replace the running binary always requires shell access to the host.

Security model: see ADR-0064. In short: the web panel can only check for updates (read-only). Applying an update is a CLI action, gated by an opt-in flag, system mode, and an operator-pinned Ed25519 signature — not just a checksum.

1. Checking for updates

From the admin panel (read-only)

Settings → Software updates → Check for updates (Admin v2) calls GET /admin/api/updates/check, which compares your running version with the latest GitHub release and renders the changelog. When an update is available it surfaces the exact, copy-to-clipboard signed-apply commands (dry-run, apply, rollback). It performs no download and changes nothing on disk. The page also shows recent update history (GET /admin/api/updates/history), and every check is recorded in the update_history table.

From the CLI

vayupress update check

Prints the current version, the latest release, whether an update is available, and the release notes.

2. Applying an update (CLI-only, signature-verified)

Applying is off by default and refuses to run unless every safety gate is satisfied.

One-time setup

1. Opt in:

   export VAYU_SELFUPDATE_ENABLED=true
   

2. Pin the release signing key (obtain it out-of-band from the project's published key, not over the same channel as the binary):

   export VAYU_RELEASE_PUBKEY=<hex-encoded-ed25519-public-key>
   

Dry run first (verifies everything, changes nothing)

vayupress update apply --dry-run

This downloads the candidate binary, verifies its SHA-256 against the published checksum, verifies the Ed25519 signature over that digest against your pinned key, and reports success — without replacing anything.

Apply

vayupress update apply

Sequence enforced by internal/update:

1. Refuse unless VAYU_SELFUPDATE_ENABLED=true.
2. Refuse unless VAYU_RELEASE_PUBKEY is set.
3. Refuse if system mode is read-only, quarantined, or maintenance.
4. Download → verify checksum (constant-time) → verify Ed25519 signature.
5. Back up the SQLite database (+ WAL/SHM) to a timestamped .tar.gz.
6. Atomically swap the binary (os.Rename), keeping <binary>.bak.
7. Print restart instructions — does not restart for you.

Restart

VayuPress never restarts itself. After a successful apply:

sudo systemctl restart vayupress

Rollback

The previous binary is preserved as <binary>.bak and a database backup is written before every apply. The fastest path is the built-in command, which swaps the .bak back over the running binary:

sudo systemctl stop vayupress
vayupress update rollback
sudo systemctl start vayupress

Or do it by hand:

sudo systemctl stop vayupress
mv /usr/local/bin/vayupress.bak /usr/local/bin/vayupress
# restore the DB backup if a migration changed schema:
#   tar xzf /var/cache/vayupress/backups/<timestamp>.tar.gz -C /
sudo systemctl start vayupress

History

vayupress update history

Shows the last update attempts with status (checked, started, success, failed, rolled_back), versions, and backup paths.

3. Manual upgrade (no self-update)

If you prefer not to enable self-update at all, upgrade the operator-driven way:

# Back up first
vayu-backup backup --db /var/lib/vayupress/vayupress.db --out backup.tar.gz --compress

# Replace the binary with a release you built/verified yourself, then:
sudo systemctl restart vayupress

Database migrations run automatically on startup with checksum-drift detection (ADR-0034) — a tampered or skipped migration halts boot rather than corrupting data.

Environment variables

Both are required for apply; neither affects check.

4. Migrating content from another platform

VayuPress v1.1.0 ships a built-in Markdown import subcommand:

# Preview (no writes)
vayupress migrate markdown --dir ./posts --dry-run

# Import
vayupress migrate markdown --dir ./posts

# See all migration options (WordPress, Ghost, Hugo, Jekyll, Medium, Notion, Substack)
vayupress migrate info

See docs/MIGRATION.md for the complete guide.

Release History

v1.7.0 Upgrade Steps

1. Back up the database before upgrading.
2. Replace the binary. Migrations run automatically on startup.
3. Migration 030 adds status TEXT NOT NULL DEFAULT 'published' to articles. All existing rows become published — no content is hidden.
4. No environment changes required.
5. The VayuOS shell at /os is unchanged. Old operator paths (/admin/modes, /admin/policy, etc.) continue to 301-redirect.