Go-lang LDAP Authentication (GLAuth) is a secure, easy-to-use, LDAP server w/ configurable backends.

• Centrally manage accounts across your infrastructure
• Centrally manage SSH keys, Linux accounts, and passwords for cloud servers.
• Lightweight alternative to OpenLDAP and Active Directory.
• Store your user directory in S3 or MySQL, or proxy to existing LDAP servers.

Use it to centralize account management across your Linux servers, your OSX machines, and your support applications (Jenkins, Apache/Nginx, Graylog2, and many more!).

This quickstart is a great way to try out GLAuth in a non-production environment. Be warned that you should take the extra steps to setup SSL (TLS) for production use!

1. Install GLAuth on a test server
2. Clone the repo: git clone https://github.com/nmcclain/glauth
3. Start the GLAuth server: cd glauth; sudo bin/glauth32 -c sample-simple.cfg
4. Test with traditional LDAP tools
5. ldapsearch -LLL -H ldap://localhost:389 -D cn=serviceuser,ou=svcaccts,dc=glauth,dc=com -w mysecret -x -bdc=glauth,dc=com cn=hackers

glauth: securely expose your LDAP for external auth

Usage:
  glauth [options] -c <file|s3url>
  glauth -h --help
  glauth --version

Options:
  -c, --config <file>       Config file.
  -K <aws_key_id>           AWS Key ID.
  -S <aws_secret_key>       AWS Secret Key.
  -r <aws_region>           AWS Region [default: us-east-1].
  -h, --help                Show this screen.
  --version                 Show version.

GLAuth can be deployed as a single server using only a local configuration file. This is great for testing, or for production if you use a tool like Puppet/Chef/Ansible:

glauth -c glauth.cfg

Here's a sample config wth hardcoded users and groups:

[backend]
  datastore = "config"
  baseDN = "dc=glauth,dc=com"
[[users]]
  name = "hackers"
  unixid = 5001
  primarygroup = 5501
  passsha256 = "6478579e37aff45f013e14eeb30b3cc56c72ccdc310123bcdf53e0333e3f416a"   # dogood
  sshkeys = [ "ssh-dss AAAAB3..." ]
[[groups]]
  name = "superheros"
  unixid = 5501

To create the password SHA hash, use this command: echo -n "mysecret" | openssl dgst -sha256 Instead of a local configuration file, GLAuth can fetch its configuration from S3. This is an easy way to ensure redundant GLAuth servers are always in-sync.

glauth -c s3://bucketname/glauth.cfg

In order to use S3, you must set your AWS credentials. Either:

1. set the -K and -S command-line flags OR
2. set the AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables.

More configuration options are documented here: https://github.com/nmcclain/foo/blob/master/sample-simple.cfg

GLAuth can store a user's SSH authorized keys. Add one or more keys per user as shown above, then setup the goklp helper: https://github.com/appliedtrust/goklp

For advanced users, GLAuth supports pluggable backends. Currently, it can use a local file, S3 or an existing LDAP infrastructure. In the future, we hope to have backends that support Mongo, SQL, and other datastores.

[backend]
  datastore = "ldap"
  servers = [ "ldaps://server1:636", "ldaps://server2:636" ]

Any of the architectures above will work for production. Just remember:

• Always use legit SSL certs for production!

You'll need go-bindata to build GLAuth:

go get github.com/jteeuwen/go-bindata/...