Files
jump-host/docs/installation.md
T
wmantly aa3b3ed515 feat: rebuild web UI on the shared theta42 app stack; OIDC + local admin auth
The web management UI was a bespoke minimal theme with LDAP-bind login.
Rebuild it to match the SSO Manager and Proxy — same stack, same look/feel,
same auth model. The SSH bridge, audit, metrics, and access logic are
unchanged; this is purely the web layer.

Frontend (mirrors proxy/sso):
- Express + EJS with the shared top.ejs/bottom.ejs shell, Bootstrap 5,
  jQuery, jq-repeat, FontAwesome, Socket.IO, and the shared app-base.js /
  val.js client framework (copied verbatim). Vendor libs served from
  node_modules via /static-modules; app assets via /static.
- Dashboard / Sessions / Audit pages render in the common look/feel,
  loading data through the authenticated /api/* endpoints.

Auth (mirrors proxy):
- OIDC against the SSO (utils/oidc.js + routes/auth.js + models/oidc_state)
  plus a local anti-lockout admin (models/user_redis.js, bootstrapped from
  auth.adminUsers[0] / auth.localAdminPass). AuthToken sessions carry the
  group snapshot; middleware gates the data API on adminGroups or the local
  admin. New config: oidc{} + auth.adminUsers/localAdminPass.
- /api/user/me drives the client login state; "Log in with SSO" hidden when
  oidc.enabled is false.

Verified end to end: local admin login -> token -> /api/user/me isAdmin,
metrics/sessions/audit 200 with token / 401 without / 401 bad password;
static + page shells serve; 26 tests green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-23 20:57:34 -04:00

111 lines
3.8 KiB
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---
layout: default
title: Installation
description: Install the jump host three ways — bundled in the theta-env stack, standalone Docker, or bare metal — plus the required LDAP write-ACL and port-22 options.
---
# Installation
Three ways to run the jump host, in increasing manual effort. All read their
config through [@simpleworkjs/conf](https://www.npmjs.com/package/@simpleworkjs/conf)
(`conf/base.js` < `conf/<NODE_ENV>.js` < the `CONF_SECRETS` file < `app_*` env).
## Requirements
- The [SSO Manager](https://theta42.github.io/sso-manager-node/) (OpenLDAP
directory + `/api/discovery`), v1.3.0 or newer.
- Downstream hosts joined via
[ldap-client](https://github.com/theta42/ldap-client) (SSSD +
`AuthorizedKeysCommand`).
- An LDAP bind account with **write access to the `sshPublicKey` attribute** on
user entries (see below).
- An SSO API token (`sso_…`) for the directory queries.
## 1. Unified theta-env stack (recommended)
Enable it in `theta-env/setup.env`:
```bash
CFG_JUMP_HOST_ENABLED=true
CFG_JUMP_HOST=jump.example.com
JUMP_SSH_PORT=2222
```
Re-run `./setup.sh`. The stack builds the submodule (behind the `jump-host`
compose profile), mints the directory API token, writes
`./config/jump-secrets.js`, grants the `sshPublicKey` write-ACL, registers the
jump host in the proxy, and seeds a directory entry. Forward the public host's
`:22` (or `:2222`) to the container's published `JUMP_SSH_PORT`.
## 2. Standalone Docker
```bash
cp secrets.js.example config/jump-secrets.js
$EDITOR config/jump-secrets.js # LDAP bind (+ sshPublicKey write ACL), SSO url + token
docker compose up -d --build
```
Host keys persist in the `jump-data` volume. The web UI is on `:3002`; front it
with your own TLS/proxy.
## 3. Bare metal
```bash
curl -fsSL https://raw.githubusercontent.com/theta42/jump-host/master/ops/install.sh | sudo bash
sudo $EDITOR /etc/jump-host/secrets.js
sudo systemctl restart jump-host
journalctl -u jump-host -f
```
`ops/install.sh` installs Node 22 + Redis, hard-resets the checkout at
`/opt/theta42/jump-host` to the remote branch, symlinks the systemd unit, and
runs `npm ci`. Idempotent — re-run to update. Overridable via `REPO_DIR=`,
`BRANCH=`, `SECRETS_FILE=`.
## The LDAP write-ACL (required)
The jump host injects its public key into each user's `sshPublicKey`, so its
bind account must be able to **write** that attribute. In the bundled OpenLDAP:
```
access to attrs=sshPublicKey
by dn.exact="cn=ldapclient,ou=people,dc=example,dc=com" write
by self write
by * read
```
In the theta-env bundle this is handled for you (the jump host binds as the LDAP
admin). For a hardened standalone deployment, use a dedicated bind account with
exactly this attribute-scoped ACL. Without write access, key injection fails and
every bridge attempt is audited `key-inject-failed`.
## Listening on port 22
The default SSH port is **2222** so the service needs no privilege. To listen on
22, set `ssh.listenPort: 22` and either:
- **systemd:** uncomment `AmbientCapabilities=CAP_NET_BIND_SERVICE` in the unit;
- **Docker:** publish `22:22`; or
- **firewall:** DNAT `22 → 2222`.
## Configuration reference
Every key is documented in
[`secrets.js.example`](https://github.com/theta42/jump-host/blob/master/secrets.js.example):
`ldap` (bind + bases + TLS), `sso` (url + apiToken), `ssh`
(`listenPort`, `passwordAuth`, `allowRawIPs`, `keyComment`, timeouts,
`maxSessions`), `web.port`, `oidc` (web-UI SSO login), `auth`
(`adminGroups` / `adminUsers` / `localAdminPass`), and `redis`.
## Verifying
```bash
ssh -p 2222 youruid@jump.example.com # TUI picker
ssh -p 2222 youruid_-_somehost@jump.example.com # direct
sftp -P 2222 youruid_-_somehost@jump.example.com # WinSCP path
curl -s http://localhost:3002/health
```
Watch `journalctl -u jump-host -f` (or `docker logs -f jump-host`) and the audit
log at `/audit` in the web UI.