= cockpit.conf(5)

== Name

cockpit.conf - Cockpit configuration file

== Description

Cockpit can be configured via /etc/cockpit/cockpit.conf. If
*$XDG_CONFIG_DIRS* is set, then the first path containing a
*../cockpit/cockpit.conf* is used instead. Other configuration files
and directories are searched for in the same way.

This file is not required and may need to be created manually. The file
has a INI file syntax and thus contains key / value pairs, grouped into
topical groups. See the examples below for details.

Note: The port that cockpit listens on cannot be changed in this file.
To change the port change the systemd *cockpit.socket* file.

== WebService

*Origins*::
  By default cockpit will not accept crossdomain websocket connections.
  Use this setting to allow access from alternate domains. Origins
  should include scheme, host and port, if necessary. Wildcards and glob
  expressions are permitted. IPv6 addresses must have their brackets escaped
  with backslashes (e.g. `+\[::1\]+`) as they are matched using `+fnmatch()+`.
   +
[source,ini]
----
[WebService]
Origins = https://somedomain1.com https://somedomain2.com:9090 https://*.somedomain3.com https://\[::1\]:9090
----
*ProtocolHeader*::
  Configure cockpit to look at the contents of this header to determine
  if a connection is using tls. This should only be used when cockpit is
  behind a reverse proxy, and care should be taken to make sure that
  incoming requests cannot set this header.
   +
[source,ini]
----
[WebService]
ProtocolHeader = X-Forwarded-Proto
----
*ForwardedForHeader*::
  Configure cockpit to look at the contents of this header to determine
  the real origin of a connection. This should only be used when cockpit
  is behind a reverse proxy, and care should be taken to make sure that
  incoming requests cannot set this header.
   +
[source,ini]
----
[WebService]
ForwardedForHeader = X-Forwarded-For
----
*LoginTitle*::
  Set the browser title for the login screen.
*LoginTo*::
  When set to `+true+` the _Connect to_ option on the login screen is
  visible and allows logging into another server. When set to `+false+`,
  direct remote logins are disallowed. If this option is not specified
  then it will be automatically detected based on whether the
  *cockpit-bridge* package is installed and the *ssh* program is
  available. +
   +
  If cockpit-ws is exposed to the public internet, and also has access
  to a private internal network, it is recommended to explicitly set
  *LoginTo=false*. This prevents unauthenticated remote attackers from
  scanning the internal network for existing machines and open ports.
*RequireHost*::
  When set to `+true+` cockpit will require users to use the _Connect
  to_ option to specify the host to log into.
*AllowMultiHost*::
  When set to `+true+`, cockpit will allow users to connect to multiple
  hosts in one session. The default is OS specific. +
   +
  When connecting to multiple servers, JavaScript runs without
  isolation. All systems will be vulnerable to potential attacks from
  other connected hosts. Enable this option _only_ when all hosts are
  trusted.
*MaxStartups*::
  Same as the *sshd* configuration option by the same name. Specifies
  the maximum number of concurrent login attempts allowed. Additional
  connections will be dropped until authentication succeeds or the
  connections are closed. Defaults to 10. +
   +
  Alternatively, random early drop can be enabled by specifying the
  three colon separated values *start:rate:full* (e.g. "10:30:60").
  Cockpit will start refusing authentication attempts with a probability
  of *rate/100* (30%) if there are currently *start* (10)
  unauthenticated connections. The probability increases linearly and
  all connection attempts are refused if the number of unauthenticated
  connections reaches *full* (60).
*AllowUnencrypted*::
  If true, cockpit will accept unencrypted HTTP connections. Otherwise,
  it redirects all HTTP connections to HTTPS. Exceptions are connections
  from localhost and for certain URLs (like */ping*). Defaults to
  false.
*UrlRoot*::
  The root URL where you will be serving cockpit. When provided cockpit
  will expect all requests to be prefixed with the given url. This is
  mostly useful when you are using cockpit behind a reverse proxy, such
  as nginx. `+/cockpit/+` and `+/cockpit++` are reserved and should not
  be used. For example `+/cockpit-new/+` is ok. `+/cockpit/+` and
  `+/cockpit+new/+` are not.
*ClientCertAuthentication*::
  If true, enable TLS client certificates for authenticating users.
  Commonly these are provided by a smart card, but it's equally possible
  to import certificates directly into the web browser. Please see the
  https://cockpit-project.org/guide/latest/cert-authentication.html[Certificate/smart
  card authentication] section in the Cockpit guide for details.
*Shell*::
  The relative URL to top level component to display in Cockpit once
  logged in. Defaults to `+/shell/index.html+`
*CustomLoginPage*::
  Load the login page from an alternative directory. The directory must
  contain a `+login.html+` and optionally a `+po.js+` file for translations.
  When not set, the hardcoded `+$prefix/share/cockpit/static+` directory is used.

== Log

*Fatal*::
  The kind of log messages in the bridge to treat as fatal. Separate
  multiple values with spaces. Relevant values are: *criticals* and
  *warnings*.

== OAuth

Cockpit can be configured to support the
https://tools.ietf.org/html/rfc6749#section-4.2[implicit grant] OAuth
authorization flow. When successful the resulting oauth token will be
passed to cockpit-ws using the *Bearer* auth-scheme. For a login to be
successful, cockpit will also need a to be configured to verify and
allow *Bearer* tokens.

*URL*::
  This is the url that cockpit will redirect the users browser to when
  it needs to obtain an oauth token. Cockpit will add a redirect_uri
  parameter to the url with the location of where the oauth provider
  should redirect to once a token has been obtained.
*ErrorParam*::
  When a oauth provider redirects a user back to cockpit, look for this
  parameter in the querystring or fragment portion of the url to find a
  error message. When not provided it will default to
  *error_description*
*TokenParam*::
  When a oauth provider redirects a user back to cockpit, look for this
  parameter in the querystring or fragment portion of the url to find
  the access token. When not provided it will default to
  *access_token*

== Session

*Banner*::
  The contents of the specified file (commonly */etc/issue*) are shown
  on the login page. By default, no banner is displayed.
*IdleTimeout*::
  Time in minutes after which session expires and user is logged out if
  no user action has been performed in the given time. This idle timeout
  only applies to interactive password logins. With non-interactive
  authentication methods like Kerberos, OAuth, or certificate login, the
  browser cannot forget credentials, and thus automatic logouts are not
  useful for protecting credentials of forgotten sessions. Set to *0*
  to disable session timeout.
   +
[source,ini]
----
[Session]
IdleTimeout=15
----

{empty}::
  When not specified, there is no idle timeout by default.

*WarnBeforeConnecting*::
  Whether to warn before connecting to remote hosts from the Shell.
  Defaults to true.
   +
[source,ini]
----
[Session]
WarnBeforeConnecting=false
----

== Bugs

include::partials/bugs.adoc[]

== Author

include::partials/author.adoc[]

== See also

*cockpit-ws(8)*, *cockpit-tls(8)*
