b834c1020c
Prior to this fix Teleport would not relay proxy errors from remote clusters. In other words, the following command: ``` $ tsh --cluster=remote ssh non-existing-host ``` Would print an error like: "Cannot find a remote tunnel connection. ssh subsystem request failed" Insead, it should say something like: "dial non-existing-host error: no such host" This commit fixes it. It works by: - Sending net.Dial() error from the remote proxy back via stderr over reverse tunnel. - Carefully handling this error to distinguish it from tunnel-related network errors. |
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| build.assets | ||
| docs | ||
| examples | ||
| fixtures | ||
| Godeps | ||
| integration | ||
| lib | ||
| tool | ||
| vagrant | ||
| vendor | ||
| web | ||
| .gitattributes | ||
| .gitignore | ||
| constants.go | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| Makefile | ||
| mkdocs.yml | ||
| README.md | ||
| roles.go | ||
| version.go | ||
| version.mk | ||
Gravitational Teleport
| Project Links | Description |
|---|---|
| Teleport Website | The official website of the project |
| Documentation | Admin guide, user manual and more |
| Demo Video | 3-minute video overview of the UI. |
| Teleconsole | The free service to "invite" SSH clients behind NAT, built on top of Teleport |
| Blog | Our blog where we publish Teleport news |
Introduction
Gravitational Teleport is a modern SSH server for remotely accessing clusters
of Linux servers via SSH or HTTPS. It is intended to be used instead of sshd.
Teleport enables teams to easily adopt the best SSH practices like:
- No need to distribute keys: Teleport uses certificate-based access with automatic expiration time.
- Enforcement of 2nd factor authentication.
- Cluster introspection: every Teleport node becomes a part of a cluster and is visible on the Web UI.
- Record and replay SSH sessions for knowledge sharing and auditing purposes.
- Collaboratively troubleshoot issues through session sharing.
- Connect to clusters located behind firewalls without direct Internet access via SSH bastions.
- Ability to integrate SSH credentials with your organization identities via OAuth (Google Apps, Github).
Teleport is built on top of the high-quality Golang SSH implementation and it is fully compatible with OpenSSH.
Installing and Running
Download the latest binary release,
unpack the .tar.gz and run sudo make install. This will copy Teleport binaries into
/usr/local/bin.
Then you can run Teleport as a single-node cluster:
teleport start
Building Teleport
Teleport source code consists of the actual Teleport daemon binary written in Golang, and also
it has a web UI (located in /web directory) written in Javascript. The WebUI is not changed often
and we keep it checked into Git under /dist, so you only need to build Golang:
Make sure you have Golang v1.7 or newer, then run:
go get github.com/gravitational/teleportcd $GOPATH/src/github.com/gravitational/teleportCGO_ENABLED=true make
If the build was successful the binaries are here: $GOPATH/src/github.com/gravitational/teleport/build
You'll have to create /var/lib/teleport directory and then you can start
Teleport as a single-node cluster in development mode: build/teleport start -d
If you want to release your own Teleport version, edit this Makefile, update
VERSION and SUFFIX constants, then run make setver to update version.go
If you want to cut another binary release tarball, run make release.
NOTE: The Go compiler is somewhat sensitive to amount of memory: you will need at least 1GB of virtual memory to compile Teleport. 512MB instance without swap will not work.
Rebuilding Web UI
If you want to make changes to the web UI, you have to re-build the content of /dist directory
See web/README.md for instructions on how to update the Web UI.
Why did We Build Teleport?
Mature tech companies with significant infrastructure footprints tend to implement most of these patterns internally. Teleport allows smaller companies without significant in-house SSH expertise to easily adopt them, as well. Teleport comes with an accessible Web UI and a very permissive Apache 2.0 license to facilitate adoption and use.
Being a complete standalone tool, Teleport can be used as a software library enabling trust management in complex multi-cluster, multi-region scenarios across many teams within multiple organizations.
More Information
Contributing
The best way to contribute is to create issues or pull requests right here on Github. You can also reach the Gravitational team through their website
It is possible to make changes to the Web UI without having to rebuild and restart teleport.
Simply launch it with DEBUG environment variable set from $GOPATH:
$ DEBUG=1 $GOPATH/gravitational/teleport/build/teleport start
Status
Teleport has completed a security audit from a nationally recognized technology security company. So we are comfortable with the use of Teleport from a security perspective.
However, Teleport is still a relatively young product so you may experience usability issues. We are actively supporting Teleport and addressing any issues that are submitted to this repo. Ask questions, send pull requests, report issues and don't be shy! :)
The latest stable Teleport build can be found in Releases
Known Issues
- Teleport does not officially support IPv6 yet.
Who Built Teleport?
Teleport was created by Gravitational Inc. We have built Teleport by borrowing from our previous experiences at Rackspace. It has been extracted from Gravity, our system for helping our clients to deploy and remotely manage their SaaS applications on many cloud regions or even on-premise.