* fix(stack-files): atomic write via tmp+rename with optional exclusive mode writeStackFile and writeStackFileBuffer previously called fs.writeFile directly, which truncates the target then streams the new bytes. A crash, disk-full event, or process kill between the truncate and the write left the target with partial content and no easy way to detect the half-write at read time. A private writeStackFileAtomic helper stages every write into a sibling .sencho-tmp-<suffix> file in the same directory, fsyncs, then promotes via fs.rename. A crash now leaves either the original target intact or a leftover .sencho-tmp file (cleaned up on the next failure path); a torn target file is no longer reachable through this path. The helper accepts an optional `exclusive: true` flag that swaps the final promote step from rename to link+unlink. link is atomic against EEXIST so a caller that needs "create only if not present" gets a race-free FILE_EXISTS error instead of a clobber. The upload route's overwrite-confirm flow (PR #1204) will wire this through in a follow-up so the existence check becomes authoritative. Behaviour for current callers (writeStackFile, writeStackFileBuffer, BlueprintService deploy) is unchanged: the non-exclusive default matches the prior fs.writeFile semantics from the caller's perspective. * fix(stack-files): tighten atomic write entropy + concurrent / failure tests Tmp suffix now uses crypto.randomBytes(6) so the per-process collision window is a true 48-bit space (Math.random().toString(36).slice(2,6) could drop leading zeros and narrow entropy unpredictably). Adds a short comment on the Windows link path noting NTFS / same-FS POSIX is required, both guaranteed by tmp+target being siblings. Two new tests close coverage gaps the first round missed: - a write step that throws (writeFile rejected) leaves no tmp leak and no partial target; - concurrent non-exclusive writers settle with at least one success and the final file is exactly one of the inputs (POSIX silently overwrites; Windows EPERMs the loser, both consistent).
Self-hosted Docker Compose management for one machine or a fleet.
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What Sencho is
Sencho is for homelab operators, small DevOps teams, and platform engineers who run services on Docker Compose, want a graphical interface without giving up file-on-disk workflows, and need to manage more than one machine without SSH gymnastics or a VPN.
It runs as a single container on your hardware and gives you a UI for the work you currently do over SSH on compose stacks: deploying, editing files, watching logs, restarting containers, browsing volumes, and recovering from failures. Your compose files stay on the host filesystem and remain the source of truth.
A Sencho instance is autonomous. To manage another machine, you install a second Sencho on it and connect them with a long-lived API token; the primary dashboard then acts as a transparent HTTPS proxy across your fleet. There is no SSH and no exposed Docker socket. For nodes behind NAT or strict firewalls, the Pilot Agent establishes a single outbound WebSocket tunnel to the primary, so the remote host opens no inbound port at all.
Most capabilities are free in the Community tier. A few advanced automation and fleet-control features ship in paid tiers; pricing lives at sencho.io/pricing.
Capabilities
Stacks
- Full Compose lifecycle: create, deploy, restart, stop, pull
- Monaco editor with diff preview before save and one-click rollback
- Git-sourced stacks pulled and synced from any repository
- File explorer for compose, env, and supporting files
- Stack labels for grouping and bulk operations
- App Store with LinuxServer.io templates
Observability
- Aggregated log search and stream across every container in the fleet
- Live container stats, health checks, and image-update notifications
- Threshold alerts for CPU, memory, and network
- Read-only audit log of every action
- Network topology view of containers, networks, and nodes
Fleet
- Multi-node management via authenticated HTTP and WebSocket proxy
- Fleet view with grid and topology layouts
- Fleet snapshots of compose and env across the fleet
- Pilot Agent for nodes behind NAT or strict firewalls
- Node compatibility checks before deploying
Automation
- Auto-heal policies for failed containers
- Auto-update policies for image rollouts
- Scheduled operations on cron
- Blueprints: declarative fleet templates with drift detection
- Webhooks on stack lifecycle events
- Encrypted Fleet Secrets pushed to labeled nodes
Security
- SSO: custom OIDC, presets for Google, GitHub, and Okta, plus LDAP and Active Directory
- Two-factor authentication with TOTP and backup codes
- RBAC with admin, editor, and viewer roles
- Vulnerability scanning via Trivy with VEX-based suppression and SARIF export
- Private registries and deploy enforcement for non-compliant images
- API tokens for automation
Operations
- Host console in the browser
- Sencho Cloud Backup for off-site stack archives
- Notification routing to Slack, Discord, email, and webhooks
- Global search across stacks, containers, and services
- Resources view for images, volumes, and networks with scoped prune actions
Quick start
Sencho runs in a single container.
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
Open http://your-server:1852 and create your admin account.
Always front Sencho with a TLS-terminating reverse proxy in production. See the self-hosting guide for hardening, environment variables, and reverse-proxy examples.
Run with docker run instead
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
For the full walkthrough, see the quickstart guide.
Adding remote nodes
To manage a second machine, install Sencho on it the same way, then add it from the primary dashboard with its URL and a long-lived API token. The primary proxies authenticated HTTPS and WebSocket requests to the remote instance. No SSH, no exposed Docker socket, no agent process on the remote. Nodes behind NAT or strict firewalls can opt into the Pilot Agent for outbound-only connectivity.
See the multi-node guide for the full token-bearer flow.
Screenshots
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Documentation, community, and license
- Documentation: docs.sencho.io
- Community: GitHub Discussions
- Contributing: CONTRIBUTING.md
- Security: SECURITY.md. Do not open public issues for security vulnerabilities.
- License: Business Source License 1.1. Free for production use; the only restriction is offering Sencho as a competing hosted or managed service. Converts to Apache 2.0 on 2030-03-25.



