Man page 1 : git-daemon

git-daemon - A really simple server for git repositories

A really simple TCP git daemon that normally listens on port "DEFAULT_GIT_PORT" aka 9418. It waits for a connection asking for a service, and will serve that service if it is enabled.

It verifies that the directory has the magic file "git-daemon-export-ok", and it will refuse to export any git directory that hasn(cqt explicitly been marked for export this way (unless the --export-all parameter is specified). If you pass some directory paths as git daemon arguments, you can further restrict the offers to a whitelist comprising of those.

By default, only upload-pack service is enabled, which serves git fetch-pack and git ls-remote clients, which are invoked from git fetch, git pull, and git clone.

This is ideally suited for read-only updates, i.e., pulling from git repositories.

An upload-archive also exists to serve git archive.

--strict-paths
    Match paths exactly (i.e. don(cqt allow "/foo/repo" when the real path is "/foo/repo.git" or "/foo/repo/.git") and don(cqt do user-relative paths. git daemon will refuse to start when this option is enabled and no whitelist is specified.

--base-path=path
    Remap all the path requests as relative to the given path. This is sort of "GIT root" - if you run git daemon with --base-path=/srv/git on example.com, then if you later try to pull git://example.com/hello.git, git daemon will interpret the path as /srv/git/hello.git.

--base-path-relaxed
    If --base-path is enabled and repo lookup fails, with this option git daemon will attempt to lookup without prefixing the base path. This is useful for switching to --base-path usage, while still allowing the old paths.

--interpolated-path=pathtemplate
    To support virtual hosting, an interpolated path template can be used to dynamically construct alternate paths. The template supports %H for the target hostname as supplied by the client but converted to all lowercase, %CH for the canonical hostname, %IP for the server(cqs IP address, %P for the port number, and %D for the absolute path of the named repository. After interpolation, the path is validated against the directory whitelist.

--export-all
    Allow pulling from all directories that look like GIT repositories (have the objects and refs subdirectories), even if they do not have the git-daemon-export-ok file.

--inetd
    Have the server run as an inetd service. Implies --syslog. Incompatible with --port, --listen, --user and --group options.

--listen=host_or_ipaddr
    Listen on a specific IP address or hostname. IP addresses can be either an IPv4 address or an IPv6 address if supported. If IPv6 is not supported, then --listen=hostname is also not supported and --listen must be given an IPv4 address. Incompatible with --inetd option.

--port=n
    Listen on an alternative port. Incompatible with --inetd option.

--init-timeout=n
    Timeout between the moment the connection is established and the client request is received (typically a rather low value, since that should be basically immediate).

--timeout=n
    Timeout for specific client sub-requests. This includes the time it takes for the server to process the sub-request and the time spent waiting for the next client(cqs request.

--max-connections=n
    Maximum number of concurrent clients, defaults to 32. Set it to zero for no limit.

--syslog
    Log to syslog instead of stderr. Note that this option does not imply --verbose, thus by default only error conditions will be logged.

--user-path, --user-path=path
    Allow ~user notation to be used in requests. When specified with no parameter, requests to git://host/~alice/foo is taken as a request to access foo repository in the home directory of user alice. If --user-path=path is specified, the same request is taken as a request to access path/foo repository in the home directory of user alice.

--verbose
    Log details about the incoming connections and requested files.

--reuseaddr
    Use SO_REUSEADDR when binding the listening socket. This allows the server to restart without waiting for old connections to time out.

--detach
    Detach from the shell. Implies --syslog.

--pid-file=file
    Save the process id in file. Ignored when the daemon is run under --inetd.

--user=user, --group=group
    Change daemon(cqs uid and gid before entering the service loop. When only --user is given without --group, the primary group ID for the user is used. The values of the option are given to getpwnam(3) and getgrnam(3) and numeric IDs are not supported.

Giving these options is an error when used with --inetd; use the facility of inet daemon to achieve the same before spawning git daemon if needed.

--enable=service, --disable=service
    Enable/disable the service site-wide per default. Note that a service disabled site-wide can still be enabled per repository if it is marked overridable and the repository enables the service with a configuration item.

--allow-override=service, --forbid-override=service
    Allow/forbid overriding the site-wide default with per repository configuration. By default, all the services are overridable.

<directory>
    A directory to add to the whitelist of allowed directories. Unless --strict-paths is specified this will also include subdirectories of each named directory.

These services can be globally enabled/disabled using the command line options of this command. If a finer-grained control is desired (e.g. to allow git archive to be run against only in a few selected repositories the daemon serves), the per-repository configuration file can be used to enable or disable them.

upload-pack
    This serves git fetch-pack and git ls-remote clients. It is enabled by default, but a repository can disable it by setting daemon.uploadpack configuration item to false.

upload-archive
    This serves git archive --remote. It is disabled by default, but a repository can enable it by setting daemon.uploadarch configuration item to true.

receive-pack
    This serves git send-pack clients, allowing anonymous push. It is disabled by default, as there is no authentication in the protocol (in other words, anybody can push anything into the repository, including removal of refs). This is solely meant for a closed LAN setting where everybody is friendly. This service can be enabled by daemon.receivepack configuration item to true.

We assume the following in /etc/services
    


    .

$ grep 9418 /etc/services
git             9418/tcp                # Git Version Control System

.

git daemon as inetd server
    To set up git daemon as an inetd service that handles any repository under the whitelisted set of directories, /pub/foo and /pub/bar, place an entry like the following into /etc/inetd all on one line:


    .

       git stream tcp nowait nobody  /usr/bin/git
                git daemon --inetd --verbose --export-all
                /pub/foo /pub/bar

.

git daemon as inetd server for virtual hosts
    To set up git daemon as an inetd service that handles repositories for different virtual hosts, www.example.com and www.example.org, place an entry like the following into /etc/inetd all on one line:


    .

       git stream tcp nowait nobody /usr/bin/git
                git daemon --inetd --verbose --export-all
                --interpolated-path=/pub/%H%D
                /pub/www.example.org/software
                /pub/www.example.com/software
                /software

.

In this example, the root-level directory /pub will contain a subdirectory for each virtual host name supported. Further, both hosts advertise repositories simply as git://www.example.com/software/repo.git. For pre-1.4.0 clients, a symlink from /software into the appropriate default repository could be made as well.

git daemon as regular daemon for virtual hosts
    To set up git daemon as a regular, non-inetd service that handles repositories for multiple virtual hosts based on their IP addresses, start the daemon like this:


    .

       git daemon --verbose --export-all
                --interpolated-path=/pub/%IP/%D
                /pub/192.168.1.200/software
                /pub/10.10.220.23/software

.

In this example, the root-level directory /pub will contain a subdirectory for each virtual host IP address supported. Repositories can still be accessed by hostname though, assuming they correspond to these IP addresses.

selectively enable/disable services per repository
    To enable git archive --remote and disable git fetch against a repository, have the following in the configuration file in the repository (that is the file config next to HEAD, refs and objects).


    .

       [daemon]
                uploadpack = false
                uploadarch = true

.

git daemon will set REMOTE_ADDR to the IP address of the client that connected to it, if the IP address is available. REMOTE_ADDR will be available in the environment of hooks called when services are performed.

Written by Linus Torvalds <\m[blue]\\fR\m[]\s-2\u[1]\d\s+2>, YOSHIFUJI Hideaki <\m[blue]\\fR\m[]\s-2\u[2]\d\s+2> and the git-list <\m[blue]\\fR\m[]\s-2\u[3]\d\s+2>

Documentation by Junio C Hamano and the git-list <\m[blue]\\fR\m[]\s-2\u[3]\d\s+2>.

Part of the git(1) suite

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