Anso 49d775c61f feat(volumes): add read-only volume browser (#926)
* feat(volumes): add read-only volume browser

Adds a browser for the contents of any Docker named volume. Click the
folder icon on a volume row (admin only) to open a sheet with a directory
tree on the left and a file viewer on the right.

Backend
-------
New VolumeBrowserService spawns a one-shot Alpine 3.20 helper container
with the target volume mounted read-only at /v. The container runs as
nobody (65534:65534) with a read-only rootfs, no network, all caps
dropped, no-new-privileges, and capped at 64 PIDs and 128 MiB. The
helper image is pulled on first use per node.

Listing and stat use a portable busybox-compatible shell loop (find
-printf is not available on Alpine). Reads use head -c with an
explicit -- separator; the helper's working directory is /v so user
paths are passed as ./<path> argv elements and never as flags. The
container lifecycle is managed manually (create, attach, start, wait,
remove) to avoid the AutoRemove race where dockerode sees a 404 on
its post-exit container lookup.

Path safety: relative paths are sanitized server-side, rejecting
parent-escape segments, absolute paths, null bytes, and oversized
input. Symlinks are listed but never followed on read. Files larger
than 5 MB are truncated; binary content is detected via null-byte
scan and returned base64-encoded. Non-zero helper exits map to
404, 403, or 500 by classifying stderr.

Routes mounted at /api/volumes:
- GET /:name/list?path=
- GET /:name/stat?path=
- GET /:name/read?path=

All three require admin. The read endpoint always inserts an audit
log row (success or failure) with the actual response status code,
volume name, and relative path.

Frontend
--------
FileTree generalized to take a loadDir callback and a sourceKey
instead of a hard-coded stackName. The single existing consumer
(StackFileExplorer) was updated and its tests rewritten. The loader
is read through a ref so re-creating the arrow on every parent
render does not re-trigger the root fetch effect.

New VolumeBrowserSheet renders the tree against the volume API,
shows file content (hex view for binaries), and surfaces truncation.
Rapid sheet open and reopen on different volumes is generation-
checked to avoid stomping the visible result with a stale read.

A persistent footnote reminds the user that file reads are recorded
in the audit log, and the docs page warns about the typical contents
of database volumes.

Tests
-----
15 new vitest cases cover the pure helpers (path traversal, volume
name validation, binary detection). The Docker-facing exec path is
exercised by manual end-to-end via curl against a seeded volume.

* fix(volumes): truncate long volume names in browser sheet header

Wide volume names overlapped the close X. Reserve right padding on
the header, set min-w-0 on the flex title, mark the icon and refresh
button shrink-0, and truncate the name span.

* fix(volumes): satisfy lint on volume browser additions

prefer-const on sanitizeRelPath's local; drop unused FileTree entry
arg from the file-select callback (variance lets the arrow take fewer
params than the contract).
2026-05-05 00:09:40 -04:00
2026-03-25 00:40:06 -04:00

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Sencho

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Self-hosted Docker Compose management with self-healing infrastructure, atomic deployments, and multi-network fleet control. Built for engineers who want Kubernetes-grade reliability without the complexity.

Sencho Dashboard


Why Sencho?

Works across every network

Pilot Agent tunnels through NAT and firewalls so every node in your fleet is reachable from the dashboard, regardless of network topology. No port-forwarding. No VPN. No SSH.

Containers crash. Sencho fixes them.

Auto-heal policies watch your stacks and take action (restart, redeploy, notify) before you even open your laptop. Define the rules once; the recovery runs itself.

Deploy safely without Kubernetes

Atomic deployments mean a failed stack never leaves you in a broken half-up state. Rollback is one click. Deploy enforcement policies block non-compliant images before they ever run.

Define behavior, not procedures

Auto-update policies, scheduled operations, webhooks, and deploy enforcement let you codify how your infrastructure behaves. The UI is for oversight; the engine runs the work.


Features

Stack Management

  • Monaco editor with syntax highlighting and multi-file support
  • Atomic deployments with live progress tracking and one-click rollback
  • Git-sourced stacks: pull and sync from any repository
  • Stack file explorer and label management

Monitoring & Observability

  • Live log streaming with search and filtering across all containers
  • CPU, RAM, and disk threshold alerts with configurable actions
  • Container stats, health checks, and image update notifications
  • Global observability view across all nodes in your fleet

Fleet Management

  • Multi-node via authenticated HTTP/WebSocket proxy (no SSH, no remote socket)
  • Fleet view and sync for coordinated updates across nodes
  • Pilot Agent for NAT traversal and firewall-crossing connections
  • Node compatibility checks before deploying

Automation

  • Auto-heal policies: detect and recover from container failures automatically
  • Auto-update policies: roll out new image versions on your terms
  • Scheduled operations with cron expressions
  • Webhooks and deploy enforcement rules

Security

  • SSO: custom OIDC (any spec-compliant provider), Google/GitHub/Okta presets, LDAP/Active Directory
  • Two-factor authentication and RBAC with deployer, node-admin, and auditor roles
  • Audit log, vulnerability scanning with VEX suppression, and private registry support
  • Deploy enforcement to block non-compliant images

Operations

  • App Store with one-click LinuxServer.io template deployments
  • Sencho Cloud Backup for off-site stack archives
  • Notification routing to Slack, Discord, email, and webhooks
  • Global search across stacks and containers

Architecture

Sencho's architecture combines a Distributed API model with an optional Pilot Agent for complex networks.

  • Distributed API: Remote nodes are managed by proxying authenticated HTTP/WebSocket requests to autonomous Sencho instances running on each server. No SSH. No remote Docker socket exposure. No polling agent. Each node speaks the same Sencho API, so the dashboard is just another client.
  • Pilot Agent: For nodes behind NAT or strict firewalls, the Pilot Agent establishes secure outbound tunnels to the primary dashboard instance. This guarantees full fleet visibility and management without requiring port-forwarding, VPNs, or inbound network access.

Quick Start

Docker run (quickest):

docker run -d --name sencho \
  -p 1852:1852 \
  -v /var/run/docker.sock:/var/run/docker.sock \
  -v sencho_data:/app/data \
  -e COMPOSE_DIR=/opt/docker \
  saelix/sencho:latest

Docker Compose (recommended for production):

services:
  sencho:
    image: saelix/sencho:latest
    container_name: sencho
    restart: unless-stopped
    ports:
      - "1852:1852"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ./data:/app/data
      # 1:1 Compose Path Rule: the host path MUST match the container path
      - /opt/docker:/opt/docker
    environment:
      - COMPOSE_DIR=/opt/docker
      - DATA_DIR=/app/data
docker compose up -d

Then open http://your-server:1852 and create your admin account.

See the full documentation for configuration details, multi-node setup, and more.


Documentation


Development

# Backend (Express + TypeScript)
cd backend && npm install && npm run dev

# Frontend (React + Vite)
cd frontend && npm install && npm run dev

The frontend dev server proxies /api requests to the backend on port 1852.

Contributing

See CONTRIBUTING.md for development setup and PR guidelines.

Security

See SECURITY.md for vulnerability reporting. Do not open public issues for security vulnerabilities.

License

Sencho is licensed under the Business Source License 1.1. Production use is allowed; the only restriction is offering Sencho as a competing hosted or managed service. On 2030-03-25, the license automatically converts to Apache 2.0.

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Self-hosted Docker Compose management platform. Great for homelabs, small DevOps teams, and platform engineers.
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