Adams 0.3.2

Adams is a UNIX system administration tool written in Common Lisp.

You describe your systems (hosts) using resources having properties.

The properties are then probed and synchronized by Adams using only /bin/sh on the remote host, and /usr/bin/ssh on the control host.

Configuration example

Check out https://github.com/kmx-io/kmx-io/ for a detailed example of Adams usage.

Current status

Adams is currently able to use a local shell or connect to remote hosts via ssh.

Adams is this hardcore hacker using only /bin/sh commands. This makes ksh and bash suitable shells for adams as they are compatible with /bin/sh.

Supported resource types :

• Host (hostname)
• User (useradd, usermod, userdel)
• Group (groupadd, groupmod, groupdel)
• File (owner, group, permissions, content)
• Directory (owner, group, permissions)
• Package (Debian, OpenBSD)

Security design

You should only allow Adams what you would allow your system operators :

• a shell accessible through SSH using a public key
• apropriate sudo permissions

All commands issued to the remote hosts can be logged.

Adams does not grant the hosts access to its workstation while it works. Adams does not grant access to data belonging to any host. Adams does not send any data that is not of direct concern to the host. In short, all UNIX permissions are respected, Adams is a regular UNIX user.

Usage

1. Install repo.

2. Fetch adams sources.

  $ sbcl --eval '(repo:install :adams)'

3. Build and install the adams binary

  $ cd ~/common-lisp/cl-adams/adams
  $ make
  $ sudo cp build/adams /usr/local/bin/adams

4. Configure emacs (optional)

In your ~/.emacs file :

  ;;  Adams
  (add-to-list 'auto-mode-alist '("\\.adams\\'" . lisp-mode))

5. Write some resources in a .adams script

In the tutorial.adams file :

  #!/usr/local/bin/adams --script

  (resource 'host "adams.kmx.io"
            :user "adams"
            (resource 'user "adams"
                      :shell "/bin/sh"
                      :ensure :present))

  (with-host "adams.kmx.io"
    (sync *host*))

6. Profit.

  $ chmod 755 tutorial.adams
  $ ./tutorial.adams

The tutorial.adams script will synchronize the host “adams.kmx.io” according to the resource specifications given in the file.

7. DRY up your scripts using #.(include "file")

In the user/dx.adams file :

  ;; Thomas de Grivel (kmx.io)
  (resource 'group "dx"
            :gid 19256
            :ensure :present)
  (resource 'user "dx"
            :uid 19256
            :gid 19256
            :home "/home/dx"
            :ensure :present)

In your main script :

  #!/usr/local/bin/adams --script

  (resource 'host "adams.kmx.io"
            :user "adams"
            (resource 'user "adams"
                      :shell "/bin/sh"
                      :ensure :present)
            #.(include "user/dx"))

  (with-host "adams.kmx.io"
    (sync *host*))

License

Authors

Thomas de Grivel thodg@kmx.io