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feat(nodes): agent self-upgrade (#57)

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POST /agents/:id/upgrade enqueues a self_upgrade command carrying the
target platform, the sha256 the server computed over its bundled binary,
and the server version. The agent downloads the replacement from the
existing /api/agents/download/:platform endpoint, verifies the checksum,
sanity-checks the new binary (--version), atomically swaps its own
executable, reports the command result, then re-execs via syscall.Exec —
no supervisor or restart plumbing required.

Agents stamp main.version via ldflags at image build, expose --version,
and now send version at register so node_agents.version refreshes on
re-register (older agents without the field keep their stored value).
The server rejects upgrades for offline nodes and for platforms with no
bundled binary (linux-amd64/linux-arm64 ship in the image).

Surfaces: nodes upgrade CLI, containr_nodes_upgrade MCP (confirm-gated),
node-detail page button, OpenAPI. Verified live: v0.0.3 agent upgraded
to v0.0.4 in place, re-registered with the new version; offline node
returns 409 NODE_OFFLINE.

Generated with [Devin](https://devin.ai)

Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
This commit is contained in:
Tomáš DvořákandDevin authored and GitHub committed 2026-10-09 17:15:58 +02:00
1 parent dd5ce80ce2
commit 9de586f177
12 files changed
+337 -14
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app/frontend/src/features/nodes/NodeDetailPage.tsx
+15
View File
@@ -11,6 +11,7 @@ import {
listAgentContainers,
pruneAgent,
updateAgent,
upgradeAgent,
type AgentMetricPoint,
} from '@/lib/api-client';
import { getCurrentUserProfile } from '@/lib/api-client';
@@ -97,6 +98,10 @@ export function NodeDetailPage() {
mutationFn: () => drainAgent(id),
onSuccess: () => { setConfirmDrain(false); invalidate(); },
});
const upgradeMutation = useMutation({
mutationFn: () => upgradeAgent(id),
onSuccess: invalidate,
});
const agent = agentQuery.data;
const metrics = useMemo(() => metricsQuery.data ?? [], [metricsQuery.data]);
@@ -215,6 +220,16 @@ export function NodeDetailPage() {
>
drain
</button>
<button
onClick={() => upgradeMutation.mutate()}
disabled={upgradeMutation.isPending || !online}
title={online
? `Upgrade agent to the server's bundled binary (server ${upgradeMutation.data?.version ?? 'build'}) — the agent restarts itself`
: 'Node must be online to upgrade'}
className="v-mono text-[11px] px-3 py-1.5 rounded-md border border-[var(--border-subtle)] text-[var(--text-secondary)] hover:text-[var(--text-primary)] disabled:opacity-50"
>
{upgradeMutation.isPending ? 'upgrading…' : 'upgrade agent'}
</button>
<button
onClick={() => setConfirmVolumes(true)}
disabled={pruneMutation.isPending}
app/frontend/src/generated/api-types.ts
+64
View File
@@ -8732,6 +8732,70 @@ export interface paths {
patch?: never;
trace?: never;
};
"/agents/{id}/upgrade": {
parameters: {
query?: never;
header?: never;
path?: never;
cookie?: never;
};
get?: never;
put?: never;
/**
* Upgrade the node agent
* @description Enqueues a `self_upgrade` command. The agent downloads its replacement binary from this server's bundled `/agents/download` endpoint, verifies the sha256, atomically swaps the executable, and re-execs itself — the command result reports before the process swaps. The node must be online, and the server must bundle a binary for the node's architecture (`linux-amd64`/`linux-arm64`).
*/
post: {
parameters: {
query?: never;
header?: never;
path: {
/** @description Node agent ID */
id: components["parameters"]["AgentIdParam"];
};
cookie?: never;
};
requestBody?: never;
responses: {
/** @description Upgrade command enqueued */
202: {
headers: {
[name: string]: unknown;
};
content: {
"application/json": {
command?: Record<string, never>;
platform?: string;
version?: string;
};
};
};
/** @description Agent not found */
404: {
headers: {
[name: string]: unknown;
};
content: {
"application/json": components["schemas"]["Error"];
};
};
/** @description Node offline or no bundled binary for its architecture */
409: {
headers: {
[name: string]: unknown;
};
content: {
"application/json": components["schemas"]["Error"];
};
};
};
};
delete?: never;
options?: never;
head?: never;
patch?: never;
trace?: never;
};
"/agents/{id}/metrics": {
parameters: {
query?: never;
app/frontend/src/generated/docs-snapshot.ts
+1 -1
View File
@@ -40,7 +40,7 @@ export const bundledDocs: BundledDoc[] = [
"path": "guides/CLI.md",
"section": "guides",
"title": "Containr CLI",
"markdown": "# Containr CLI\n\nThe CLI controls every part of a Containr instance — the same API surface\nthe web UI uses. Build it with `scripts/build-cli.sh` or\n`go build ./cmd/cli` from `app/backend`.\n\n## Authentication\n\nCreate a personal access token in the web UI under\n**Settings → Personal Access Tokens** (or `containr tokens create`), then:\n\n```bash\ncontainr auth login cnp_... # verify + store\ncontainr auth login cnp_... --url https://containr.example.com\ncontainr auth login cnp_... --name production # named profile\ncontainr auth status # show active profile + identity\ncontainr auth logout\n```\n\nResolution order for every command: `--token`/`--api-url` flags >\n`CONTAINR_TOKEN`/`CONTAINR_API_URL` env > active profile >\n`http://localhost:8080/api/v1`. The active profile is `--profile` >\n`CONTAINR_PROFILE` > `current_profile` in `~/.containr.yaml`.\n\n## Output and scripting\n\n- `--json` prints the raw API response — safe to pipe and parse.\n- `--yes` / `-y` skips confirmation on destructive commands (delete,\n revoke, restore, failover). Non-interactive shells refuse destructive\n commands without it.\n- Exit codes are stable: `0` ok, `1` error, `2` auth/permission,\n `3` not found, `4` validation, `5` unreachable.\n\n## Commands\n\n```\nauth login|logout|status token auth and profiles\ntokens list|create|revoke personal access tokens\nprojects list|get|create|delete\nservices list|get|create|update|delete|start|stop|restart|redeploy\nservices clone|move duplicate config or re-parent a service\nservices domains list|add|remove|default|check multi-domain + DNS preflight\nregistries list|add|update|remove private-image pull credentials\nvolumes list|delete docker volume inventory + cleanup (admin)\ndeploy <service-id> trigger a deployment (--no-cache, --commit-hash, --branch)\ndeployments list|get|logs|rollback|cancel\nlogs <service-id> [--follow] runtime logs (SSE follow)\nexec <service-id> -- <cmd> one-off container command\nvariables list|set|unset env vars (secrets masked; --redeploy applies them)\nvariables shared list|set|unset project shared vars — referenced as ${{shared.KEY}}\ndatabases list|get|create|update|delete|action|backup|restore|download-backup|import-backup\n import-backup <id> <file.tar.gz|-> uploads an archive as a restore\n point; ships offsite too when a backup target is assigned\ndatabases list|get|create|update|delete|action|backup|restore|download-backup\n create --public exposes the port on all interfaces;\n update <id> --public/--public=false toggles it (container recreates, data persists)\ndatabases register <name> register an external database (--type --host --port --database --username --password --ssl; probed before storing)\ndatabases test-connection probe a connection — by id, or ad-hoc flags\nbackup-targets list|add|update|remove|test\n S3-compatible archive destinations; add/update probe the bucket\n first, empty --access-key/--secret-key on update keep stored keys;\n update <db-id> --backup-target assigns a target (\"\" clears it)\ncron list|get|create|delete|trigger|executions\ntemplates list|get|create|delete|deploy|plan|import-compose|deploy-graph\n deploy --name --var K=V; plan dry-resolves expressions;\n import-compose <compose.yml|-> converts a compose file into\n a v2 graph config; deploy-graph <project-id> <config.json|->\n deploys an ad-hoc service graph\nimport compose <project-id> <compose.yml|->\n deploys a docker-compose file straight into a project —\n no template row. DB images become managed databases\n attached under their service name; --var K=V overrides\n template variables\nnodes list|get|delete|tokens node agents + onboarding tokens (admin)\nnodes add <user@host> SSH bootstrap — one session installs the agent, then never needed again (--print for manual runs)\nnodes update|prune|commands rename/auto-prune, bounded docker prune, command history\nmigrate railway pull a Railway project (services, vars, domains) via GraphQL and recreate it — --dry-run prints the plan\nmigrate dflow import a dflow project (services, vars, volumes, domains) via its Payload REST API — needs --url + --api-key, --dry-run prints the plan\nscaling status|policies|services|scale\nha status|alerts|health|policies|enable|disable|failover\nsecurity scan|vulnerabilities|metrics\ngateway services|keys|anLine truncated
"markdown": "# Containr CLI\n\nThe CLI controls every part of a Containr instance — the same API surface\nthe web UI uses. Build it with `scripts/build-cli.sh` or\n`go build ./cmd/cli` from `app/backend`.\n\n## Authentication\n\nCreate a personal access token in the web UI under\n**Settings → Personal Access Tokens** (or `containr tokens create`), then:\n\n```bash\ncontainr auth login cnp_... # verify + store\ncontainr auth login cnp_... --url https://containr.example.com\ncontainr auth login cnp_... --name production # named profile\ncontainr auth status # show active profile + identity\ncontainr auth logout\n```\n\nResolution order for every command: `--token`/`--api-url` flags >\n`CONTAINR_TOKEN`/`CONTAINR_API_URL` env > active profile >\n`http://localhost:8080/api/v1`. The active profile is `--profile` >\n`CONTAINR_PROFILE` > `current_profile` in `~/.containr.yaml`.\n\n## Output and scripting\n\n- `--json` prints the raw API response — safe to pipe and parse.\n- `--yes` / `-y` skips confirmation on destructive commands (delete,\n revoke, restore, failover). Non-interactive shells refuse destructive\n commands without it.\n- Exit codes are stable: `0` ok, `1` error, `2` auth/permission,\n `3` not found, `4` validation, `5` unreachable.\n\n## Commands\n\n```\nauth login|logout|status token auth and profiles\ntokens list|create|revoke personal access tokens\nprojects list|get|create|delete\nservices list|get|create|update|delete|start|stop|restart|redeploy\nservices clone|move duplicate config or re-parent a service\nservices domains list|add|remove|default|check multi-domain + DNS preflight\nregistries list|add|update|remove private-image pull credentials\nvolumes list|delete docker volume inventory + cleanup (admin)\ndeploy <service-id> trigger a deployment (--no-cache, --commit-hash, --branch)\ndeployments list|get|logs|rollback|cancel\nlogs <service-id> [--follow] runtime logs (SSE follow)\nexec <service-id> -- <cmd> one-off container command\nvariables list|set|unset env vars (secrets masked; --redeploy applies them)\nvariables shared list|set|unset project shared vars — referenced as ${{shared.KEY}}\ndatabases list|get|create|update|delete|action|backup|restore|download-backup|import-backup\n import-backup <id> <file.tar.gz|-> uploads an archive as a restore\n point; ships offsite too when a backup target is assigned\ndatabases list|get|create|update|delete|action|backup|restore|download-backup\n create --public exposes the port on all interfaces;\n update <id> --public/--public=false toggles it (container recreates, data persists)\ndatabases register <name> register an external database (--type --host --port --database --username --password --ssl; probed before storing)\ndatabases test-connection probe a connection — by id, or ad-hoc flags\nbackup-targets list|add|update|remove|test\n S3-compatible archive destinations; add/update probe the bucket\n first, empty --access-key/--secret-key on update keep stored keys;\n update <db-id> --backup-target assigns a target (\"\" clears it)\ncron list|get|create|delete|trigger|executions\ntemplates list|get|create|delete|deploy|plan|import-compose|deploy-graph\n deploy --name --var K=V; plan dry-resolves expressions;\n import-compose <compose.yml|-> converts a compose file into\n a v2 graph config; deploy-graph <project-id> <config.json|->\n deploys an ad-hoc service graph\nimport compose <project-id> <compose.yml|->\n deploys a docker-compose file straight into a project —\n no template row. DB images become managed databases\n attached under their service name; --var K=V overrides\n template variables\nnodes list|get|delete|tokens node agents + onboarding tokens (admin)\nnodes add <user@host> SSH bootstrap — one session installs the agent, then never needed again (--print for manual runs)\nnodes update|prune|commands rename/auto-prune, bounded docker prune, command history\nmigrate railway pull a Railway project (services, vars, domains) via GraphQL and recreate it — --dry-run prints the plan\nmigrate dflow import a dflow project (services, vars, volumes, domains) via its Payload REST API — needs --url + --api-key, --dry-run prints the plan\nscaling status|policies|services|scale\nha status|alerts|health|policies|enable|disable|failover\nsecurity scan|vulnerabilities|metrics\ngateway services|keys|anLine truncated
},
{
"path": "guides/CLOUDFLARE_SETUP.md",
app/frontend/src/lib/api-client.ts
+6
View File
@@ -1164,6 +1164,12 @@ export async function drainAgent(id: string): Promise<DrainResult> {
return requestJson<DrainResult>(`/agents/${id}/drain`, { method: 'POST' });
}
export type UpgradeResult = { platform: string; version: string };
export async function upgradeAgent(id: string): Promise<UpgradeResult> {
return requestJson<UpgradeResult>(`/agents/${id}/upgrade`, { method: 'POST' });
}
export async function getAgent(id: string): Promise<NodeAgentEntity | null> {
const payload = await requestJson<{ agent?: RawNodeAgent }>(`/agents/${id}`);
return payload.agent ? normalizeAgent(payload.agent) : null;