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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix.texi | 144 |
1 files changed, 136 insertions, 8 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index a458c7c8dd..eaec4c422b 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -27,7 +27,7 @@ Copyright @copyright{} 2016, 2017, 2018 Chris Marusich@* Copyright @copyright{} 2016, 2017, 2018 Efraim Flashner@* Copyright @copyright{} 2016 John Darrington@* Copyright @copyright{} 2016, 2017 Nils Gillmann@* -Copyright @copyright{} 2016, 2017 Jan Nieuwenhuizen@* +Copyright @copyright{} 2016, 2017, 2018 Jan Nieuwenhuizen@* Copyright @copyright{} 2016 Julien Lepiller@* Copyright @copyright{} 2016 Alex ter Weele@* Copyright @copyright{} 2017, 2018 Clément Lassieur@* @@ -48,7 +48,8 @@ Copyright @copyright{} 2017 nee@* Copyright @copyright{} 2018 Rutger Helling@* Copyright @copyright{} 2018 Oleg Pykhalov@* Copyright @copyright{} 2018 Mike Gerwitz@* -Copyright @copyright{} 2018 Pierre-Antoine Rouby +Copyright @copyright{} 2018 Pierre-Antoine Rouby@* +Copyright @copyright{} 2018 Gábor Boskovits@* Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or @@ -429,7 +430,7 @@ Installing goes along these lines: @item @cindex downloading Guix binary Download the binary tarball from -@indicateurl{ftp://alpha.gnu.org/gnu/guix/guix-binary-@value{VERSION}.@var{system}.tar.xz}, +@indicateurl{https://alpha.gnu.org/gnu/guix/guix-binary-@value{VERSION}.@var{system}.tar.xz}, where @var{system} is @code{x86_64-linux} for an @code{x86_64} machine already running the kernel Linux, and so on. @@ -438,7 +439,7 @@ Make sure to download the associated @file{.sig} file and to verify the authenticity of the tarball against it, along these lines: @example -$ wget ftp://alpha.gnu.org/gnu/guix/guix-binary-@value{VERSION}.@var{system}.tar.xz.sig +$ wget https://alpha.gnu.org/gnu/guix/guix-binary-@value{VERSION}.@var{system}.tar.xz.sig $ gpg --verify guix-binary-@value{VERSION}.@var{system}.tar.xz.sig @end example @@ -4915,6 +4916,12 @@ containing @var{text}, a string. @var{references} is a list of store items that resulting text file refers to; it defaults to the empty list. @end deffn +@deffn {Monadic Procedure} binary-file @var{name} @var{data} [@var{references}] +Return as a monadic value the absolute file name in the store of the file +containing @var{data}, a bytevector. @var{references} is a list of store +items that the resulting binary file refers to; it defaults to the empty list. +@end deffn + @deffn {Monadic Procedure} interned-file @var{file} [@var{name}] @ [#:recursive? #t] [#:select? (const #t)] Return the name of @var{file} once interned in the store. Use @@ -5348,7 +5355,7 @@ procedure (@pxref{The Store Monad, @code{interned-file}}). @deffn {Scheme Procedure} plain-file @var{name} @var{content} Return an object representing a text file called @var{name} with the given -@var{content} (a string) to be added to the store. +@var{content} (a string or a bytevector) to be added to the store. This is the declarative counterpart of @code{text-file}. @end deffn @@ -6379,6 +6386,14 @@ The command below imports metadata for the @code{rails} Ruby package: guix import gem rails @end example +@table @code +@item --recursive +@itemx -r +Traverse the dependency graph of the given upstream package recursively +and generate package expressions for all those packages that are not yet +in Guix. +@end table + @item cpan @cindex CPAN Import metadata from @uref{https://www.metacpan.org/, MetaCPAN}@footnote{This @@ -6660,6 +6675,12 @@ in Guix. @cindex crate Import metadata from the crates.io Rust package repository @uref{https://crates.io, crates.io}. + +@item opam +@cindex OPAM +@cindex OCaml +Import metadata from the @uref{https://opam.ocaml.org/, OPAM} package +repository used by the OCaml community. @end table The structure of the @command{guix import} code is modular. It would be @@ -8392,7 +8413,7 @@ about their support in GNU/Linux. An ISO-9660 installation image that can be written to a USB stick or burnt to a DVD can be downloaded from -@indicateurl{ftp://alpha.gnu.org/gnu/guix/guixsd-install-@value{VERSION}.@var{system}.iso.xz}, +@indicateurl{https://alpha.gnu.org/gnu/guix/guixsd-install-@value{VERSION}.@var{system}.iso.xz}, where @var{system} is one of: @table @code @@ -8408,7 +8429,7 @@ Make sure to download the associated @file{.sig} file and to verify the authenticity of the image against it, along these lines: @example -$ wget ftp://alpha.gnu.org/gnu/guix/guixsd-install-@value{VERSION}.@var{system}.iso.xz.sig +$ wget https://alpha.gnu.org/gnu/guix/guixsd-install-@value{VERSION}.@var{system}.iso.xz.sig $ gpg --verify guixsd-install-@value{VERSION}.@var{system}.iso.xz.sig @end example @@ -10829,6 +10850,21 @@ gexps to introduce job definitions that are passed to mcron for more information on mcron job specifications. Below is the reference of the mcron service. +On a running system, you can use the @code{schedule} action of the service to +visualize the mcron jobs that will be executed next: + +@example +# herd schedule mcron +@end example + +@noindent +The example above lists the next five tasks that will be executed, but you can +also specify the number of tasks to display: + +@example +# herd schedule mcron 10 +@end example + @deffn {Scheme Procedure} mcron-service @var{jobs} [#:mcron @var{mcron}] Return an mcron service running @var{mcron} that schedules @var{jobs}, a list of gexps denoting mcron job specifications. @@ -15649,6 +15685,39 @@ Specify the path of the base URL. This can be useful if @end table @end deftp +@subsubheading Prometheus Node Exporter Service + +@cindex prometheus-node-exporter +The Prometheus ``node exporter'' makes hardware and operating system statistics +provided by the Linux kernel available for the Prometheus monitoring system. +This service should be deployed on all physical nodes and virtual machines, +where monitoring these statistics is desirable. + +@defvar {Scheme variable} prometheus-node-exporter-service-type +This is the service type for the +@uref{https://github.com/prometheus/node_exporter/, prometheus-node-exporter} +service, its value must be a @code{prometheus-node-exporter-configuration} +record as in this example: + +@example +(service prometheus-node-exporter-service-type + (prometheus-node-exporter-configuration + (web-listen-address ":9100"))) +@end example +@end defvar + +@deftp {Data Type} prometheus-node-exporter-configuration +Data type representing the configuration of @command{node_exporter}. + +@table @asis +@item @code{package} (default: @code{go-github-com-prometheus-node-exporter}) +The prometheus-node-exporter package to use. + +@item @code{web-listen-address} (default: @code{":9100"}) +Bind the web interface to the specified address. + +@end table +@end deftp @node Kerberos Services @subsubsection Kerberos Services @@ -21323,7 +21392,7 @@ example graph. @cindex virtual machine To run GuixSD in a virtual machine (VM), one can either use the pre-built GuixSD VM image distributed at -@indicateurl{ftp://alpha.gnu.org/guix/guixsd-vm-image-@value{VERSION}.@var{system}.tar.xz} +@indicateurl{https://alpha.gnu.org/gnu/guix/guixsd-vm-image-@value{VERSION}.@var{system}.xz} , or build their own virtual machine image using @command{guix system vm-image} (@pxref{Invoking guix system}). The returned image is in qcow2 format, which the @uref{http://qemu.org/, QEMU emulator} can @@ -21915,6 +21984,17 @@ Constructors,,, shepherd, The GNU Shepherd Manual}). They are given as G-expressions that get expanded in the Shepherd configuration file (@pxref{G-Expressions}). +@item @code{actions} (default: @code{'()}) +@cindex actions, of Shepherd services +This is a list of @code{shepherd-action} objects (see below) defining +@dfn{actions} supported by the service, in addition to the standard +@code{start} and @code{stop} actions. Actions listed here become available as +@command{herd} sub-commands: + +@example +herd @var{action} @var{service} [@var{arguments}@dots{}] +@end example + @item @code{documentation} A documentation string, as shown when running: @@ -21932,6 +22012,54 @@ This is the list of modules that must be in scope when @code{start} and @end table @end deftp +@deftp {Data Type} shepherd-action +This is the data type that defines additional actions implemented by a +Shepherd service (see above). + +@table @code +@item name +Symbol naming the action. + +@item documentation +This is a documentation string for the action. It can be viewed by running: + +@example +herd doc @var{service} action @var{action} +@end example + +@item procedure +This should be a gexp that evaluates to a procedure of at least one argument, +which is the ``running value'' of the service (@pxref{Slots of services,,, +shepherd, The GNU Shepherd Manual}). +@end table + +The following example defines an action called @code{say-hello} that kindly +greets the user: + +@example +(shepherd-action + (name 'say-hello) + (documentation "Say hi!") + (procedure #~(lambda (running . args) + (format #t "Hello, friend! arguments: ~s\n" + args) + #t))) +@end example + +Assuming this action is added to the @code{example} service, then you can do: + +@example +# herd say-hello example +Hello, friend! arguments: () +# herd say-hello example a b c +Hello, friend! arguments: ("a" "b" "c") +@end example + +This, as you can see, is a fairly sophisticated way to say hello. +@xref{Service Convenience,,, shepherd, The GNU Shepherd Manual}, for more +info on actions. +@end deftp + @defvr {Scheme Variable} shepherd-root-service-type The service type for the Shepherd ``root service''---i.e., PID@tie{}1. |