coreos/documentation/showcase/cockpit.rst

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.. _ref-cockpit:
Cockpit Web Interface
=====================
The Cockpit Web Interface is an easy-to-use web based interface made to manage
a Linux based server. It intentionally uses standard system API like `systemd`,
`pam`, `networkmanager` making it easily integrable and interoperable on
any Linux operating system using these programs.
.. image:: cockpit/overview.png
.. important::
Providing and supporting a web management interface is out of the scope of
CoreOS. We provide some facilities to install this web interface as it's
available in `meta-openembedded` and we find it useful for developer.
The Cockpit Web Interface can be installed on an image by adding `cockpit` to
the :ref:`IMAGE_FEATURES <ref-features-image>` variable. You can then access
the web interface on the port 9090: `https://TARGET_IP:9090`
.. hint::
Cockpit use standard Linux authentification method. The simplest way to
get a login is to enable the `debug-tweak`
:ref:`IMAGE_FEATURES <ref-features-image>`, then login with `root` as
username and an empty password.
See https://cockpit-project.org/guide/latest/authentication for more info
When the `cockpit` `IMAGE_FEATURES`` is used, the following feature of are
availabe:
Dashboard
---------
The dashboard allows seeing some system statistic in real time.
.. image:: cockpit/dashboard.png
.. hint::
The statistics are not stored, so they are only available when the dashboard
page is open
Logs Viewer
-----------
The log viewer allows seeing the log from `journalctl`.
.. image:: cockpit/log.png
Accounts management
-------------------
The account management allow creating and managing users. For existing user, the
account can be locked, the password changed and SSH public key can be added.
.. image:: cockpit/accounts.png
Services management
-------------------
The services page allows managing `systemd` service. Service can be started,
restarted, stopped, enabled or disabled. Logs related to the service can also be
viewed easily.
.. image:: cockpit/services.png
Web Terminal
------------
The terminal page gives access to a web terminal, allowing to interact with the
shell of the device.
.. image:: cockpit/terminal.png
Additional plugins
------------------
Additional plugin can be installed for `cockpit`, like `podman-cockpit` that
allow to manage podman container from the cockpit web interface. When possible,
CoreOS automatically add the corresponding `cockpit` plugin when additional
features are added via :ref:`IMAGE_FEATURES <ref-features-image>`.
As an example, the `cockpit-podman` package is automatically installed if
:ref:`IMAGE_FEATURES <ref-features-image>` contains both `cockpit` and `podman`.
These plugins are documented in the corresponding features showcase page.