dev-manual: Patch applied to runtime package management.
Trevor Woerner's patch as submitted with no alterations. This patch rewrites the entire section on setting up runtime package management. The section will need to be edited but that will be a separate exercise. This commit captures the raw patch. Note: one external link in the doc set broken after application of the patch because a "section id" tag was changed by the patch. I am leaving that fix to a separate commit. (From yocto-docs rev: 4de8df9c9da2e43b5125d1c52889d4408870a4d7) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Trevor Woerner
Richard Purdie
parent
5445f71fc8
commit
7754bd215b
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@ -3605,61 +3605,179 @@
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</section>
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</section>
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</section>
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</section>
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<section id='setting-up-runtime-package-management'>
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<section id='runtime-package-management'>
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<title>Setting Up Runtime Package Management</title>
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<title>Runtime Package Management</title>
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<para>
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<para>
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For supported package formats, it is possible to set
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Regardless of anything else, during a build bitbake will
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up a repository that is a host-based package feed from which
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transform a recipe into one or more packages. For example,
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you can install packages on the target system during runtime.
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the <filename>bash</filename> recipe currently produces the
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Doing so is optional and depends on the following:
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following packages: <filename>bash-dbg bash-staticdev bash-dev
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bash-doc bash-locale bash</filename>. Not all generated
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packages will be included in an image.
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</para><para>
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In several situations you might want to have the ability to
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update, add, remove, query, etc the packages on a target
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device at runtime (i.e. without having to generate a new
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image). Examples of such situations include:
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<itemizedlist>
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<itemizedlist>
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<listitem><para>
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<listitem><para>
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You take specific steps to set up the feed.
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You want to provide in-the-field updates to deployed
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</para></listitem>
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devices (e.g. for security updates).
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</para></listitem>
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<listitem><para>
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<listitem><para>
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When you build your image, you select to use the
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You want to have a fast turn-around development cycle
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appropriate package manager by setting the
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for one or more applications which run on your device.
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<ulink url='&YOCTO_DOCS_REF_URL;#var-PACKAGE_CLASSES'><filename>PACKAGE_CLASSES</filename></ulink>
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</para></listitem>
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variable.
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</para></listitem>
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<listitem><para>
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<listitem><para>
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You have a web server, such as Apache 2,
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You want to temporarily install the "debug" packages
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installed and configured on the development host.
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of various applications on your device so that
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</para></listitem>
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debugging can be greatly improved (access to symbols,
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source debugging, etc).
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</para></listitem>
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<listitem><para>
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<listitem><para>
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You enable package management on the target by
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You want to deploy a more minimal package selection of
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listing "package-management" in the
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your device but allow in-the-field updates to add a
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<ulink url='&YOCTO_DOCS_REF_URL;#var-IMAGE_FEATURES'><filename>IMAGE_FEATURES</filename></ulink>
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larger selection for customization.
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variable.
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</para></listitem>
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</para></listitem>
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</itemizedlist>
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</itemizedlist>
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</para>
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</para><para>
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In all these situations you have something similar to a more
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traditional Linux distribution in that in-field devices
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are able to grab pre-compiled packages from a server for
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installation/update. This is what is termed "runtime package
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management". In order to use runtime package management you
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need a host/server machine which serves up the pre-compiled
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packages plus the required meta data, and you need package
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manipulation tools on the target. Note that the build machine
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is a likely candidate to act as the server, but the build
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machine doesn't necessarily have to be the package server;
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the build machine could push its artifacts to another (e.g.
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Internet-facing) machine which acts as the server.
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</para><para>
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A simple build which targets just one device will produce
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more than one package database. In other words, the packages
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produced by a build will be separated out into a couple of
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different package groupings based on criteria such as the
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target's CPU architecture, the target board, or the C library
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used on the target. For example, a build targetting the
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<filename>qemuarm</filename> device will produce the following
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3 package databases: <filename>all</filename>,
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<filename>armv5te</filename>, and
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<filename>qemuarm</filename>. If I wanted my
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<filename>qemuarm</filename> device to be aware of all the
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packages which were available to it, I would need to point it
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to each of these databases individually. In a similar way, a
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traditional Linux distribution usually is configured to be
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aware of a number of software repositories from which it
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will retrieve packages.
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</para><para><note>
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Using runtime package management is completely optional and
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not required for a successful build or deployment in any way.
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But if you want to make use of runtime package management
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you'll need to do a couple things above and beyond the basics.
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</note></para>
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<para>
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<section id='runtime-package-management-build'>
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The following list provides steps for setting up the optional
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<title>Build Considerations</title>
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repository regardless of the package format.
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<para>
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Once you work through these generic steps, see the
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In order to provide support for runtime package management
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"<link linkend='runtime-package-management-deb-rpm'>Using RPM</link>"
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there are some build considerations of which to be aware.
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section or the
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</para><para>
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"<link linkend='runtime-package-management-ipk'>Using IPK</link>"
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When bitbake generates packages it needs to know in
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section for remaining steps specific to the package type.
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which format(s) you want the packages to be generated.
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<note>
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In your configuration this is handled by the
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The example assumes you are using the Apache 2 server:
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<ulink url='&YOCTO_DOCS_REF_URL;#var-PACKAGE_CLASSES'><filename>PACKAGE_CLASSES</filename></ulink>
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</note>
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variable. Note that you can choose to have more than one,
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<orderedlist>
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but at least one is required.
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<listitem><para>
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</para><para>
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Add the directory to your Apache configuration, which
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If you would like your image to start off with a basic
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you can find at
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package database of the packages in your current build
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<filename>/etc/httpd/conf/httpd.conf</filename>.
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as well as having the relevant tools available on the
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Use commands similar to these on the development system.
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target for runtime package management, you can include
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These example commands assume a top-level
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"package-management" in the
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<link linkend='source-directory'>Source Directory</link>
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<ulink url='&YOCTO_DOCS_REF_URL;#var-IMAGE_FEATURES'><filename>IMAGE_FEATURES</filename></ulink>
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named <filename>poky</filename> in your home directory.
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variable. Including "package-management" in this
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The example also assumes an RPM package type.
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configuration variable ensures that when the image
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If you are using a different package type, such as
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is assembled for your target it will include
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IPK, use "ipk" in the pathnames:
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the currently-known package databases as well as
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<literallayout class='monospaced'>
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the target-specific tools required for runtime
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package management to be performed on the target.
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Note, however, this isn't strictly necessary.
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You could start your image off without any databases
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but only include the required on-target package
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tool(s) (for example you would include "opkg" in your
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<ulink url='&YOCTO_DOCS_REF_URL;#var-IMAGE_INSTALL'><filename>IMAGE_INSTALL</filename></ulink>
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variable if you are using the IPK package format). You can
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then initialize your target's package database(s) later,
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once your image is up and running.
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</para><para>
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Whenever you perform any sort of build step which can
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potentially generate a package or modify an existing
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package, it is always a good idea to re-generate the
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package index with:
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<literallayout class='monospaced'>
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$ bitbake package-index
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</literallayout>
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Note that it is not sufficient to simply do:
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<literallayout class='monospaced'>
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$ bitbake <some-package> package-index
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</literallayout>
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since bitbake won't properly schedule the
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<filename>package-index</filename> target fully after any
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other target has completed. Therefore, be sure to run the
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package update step separately.
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</para><para>
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As described below in the
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<link linkend='runtime-package-management-target-ipk'>Using IPK</link>
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section, if you are using IPK as your package format, you
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can make use of the
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<filename>distro-feed-configs</filename> recipe provided
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by <filename>meta-oe</filename> in order to configure your
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target to use your IPK databases.
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</para><para>
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When your build is complete your packages will show up in
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the
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<filename>${TMPDIR}/deploy/<package-format></filename>
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directory. For example, if <filename>${TMPDIR}</filename>
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is <filename>tmp</filename> and your selected package type
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is IPK, then your IPK packages will be available in
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<filename>tmp/deploy/ipk</filename>.
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</para>
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</section>
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<section id='runtime-package-management-server'>
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<title>Host or Server Machine Setup</title>
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<para>
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Typically packages are served from a server via HTTP, but
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other protocols are possible. If we assume you want to
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use HTTP, then you would need to setup and configure a
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web server, such as Apache 2 or lighttpd, on the machine
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serving the packages. As mentioned above, the build
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machine can act as the package server; in the following
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server machine setups it is assumed the build machine is
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also the server.
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</para>
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<section id='package-server-apache'>
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<title>Serving Packages via Apache 2</title>
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<para>
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This example assumes you are using the Apache 2
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server:
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<orderedlist>
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|
<listitem><para>
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|
Add the directory to your Apache
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|
configuration, which you can find at
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<filename>/etc/httpd/conf/httpd.conf</filename>.
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Use commands similar to these on the
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development system. These example
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|
commands assume a top-level
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<link linkend='source-directory'>Source Directory</link>
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named <filename>poky</filename> in your home
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directory. The example also assumes an RPM
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package type. If you are using a different
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|
package type, such as IPK, use "ipk" in the
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pathnames:
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|
<literallayout class='monospaced'>
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<VirtualHost *:80>
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<VirtualHost *:80>
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....
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....
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Alias /rpm ~/poky/build/tmp/deploy/rpm
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Alias /rpm ~/poky/build/tmp/deploy/rpm
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@ -3667,119 +3785,172 @@
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Options +Indexes
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Options +Indexes
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</Directory>
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</Directory>
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</VirtualHost>
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</VirtualHost>
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</literallayout>
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</literallayout>
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</para></listitem>
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<listitem><para>
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Reload the Apache configuration as follows.
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For all commands, be sure you have root privileges.
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</para>
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<para>
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If your development system is using Fedora or
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CentOS, use the following:
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<literallayout class='monospaced'>
|
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service httpd reload
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</literallayout>
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For Ubuntu and Debian, use the following:
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<literallayout class='monospaced'>
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/etc/init.d/apache2 reload
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</literallayout>
|
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For OpenSUSE, use the following:
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<literallayout class='monospaced'>
|
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/etc/init.d/apache2 reload
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</literallayout>
|
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</para></listitem>
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<listitem><para>
|
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Re-generate the package index:
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<literallayout class='monospaced'>
|
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bitbake package-index
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</literallayout>
|
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</para></listitem>
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<listitem><para>
|
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If you are using Security-Enhanced Linux (SELinux),
|
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you need to label the files as being accessible
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through Apache.
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Use the following command from the development host.
|
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Again, the example assumes RPM package types:
|
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<literallayout class='monospaced'>
|
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chcon -R -h -t httpd_sys_content_t tmp/deploy/rpm
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</literallayout>
|
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</para></listitem>
|
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</orderedlist>
|
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</para>
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<section id='runtime-package-management-deb-rpm'>
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<title>Using RPM</title>
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<para>
|
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Following are RPM-specific steps needed for setting up the
|
|
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optional repository.
|
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Perform these steps after working through the common steps
|
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at the start of this section:
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<orderedlist>
|
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<listitem><para>
|
|
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On the target machine, add the repository to Smart
|
|
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for every package architecture.
|
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To see the list of package architectures, list
|
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the contents of the
|
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setting-up-runtime-package-management <filename>tmp/deploy/rpm</filename> directory
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|
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on the host.</para>
|
|
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<para>
|
|
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As an example, suppose you list the contents of the
|
|
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directory and discover three architectures:
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<filename>all</filename>, <filename>i586</filename>,
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and <filename>qemux86</filename>.
|
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Given this example, use the following commands:
|
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<literallayout class='monospaced'>
|
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smart channel ‐‐add all type=rpm-md baseurl=http://server.name/rpm/all
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smart channel ‐‐add i585 type=rpm-md baseurl=http://server.name/rpm/i586
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smart channel ‐‐add qemux86 type=rpm-md baseurl=http://server.name/rpm/qemux86
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</literallayout>
|
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</para></listitem>
|
</para></listitem>
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<listitem><para>
|
<listitem><para>
|
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Also from the target machine, fetch the repository
|
Reload the Apache configuration as follows.
|
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information using this command:
|
For all commands, be sure you have root
|
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<literallayout class='monospaced'>
|
privileges.
|
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smart update
|
</para><para>
|
||||||
</literallayout>
|
If your development system is using Fedora or
|
||||||
|
CentOS, use the following:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# service httpd reload
|
||||||
|
</literallayout>
|
||||||
|
For Ubuntu and Debian, use the following:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# /etc/init.d/apache2 reload
|
||||||
|
</literallayout>
|
||||||
|
For OpenSUSE, use the following:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# /etc/init.d/apache2 reload
|
||||||
|
</literallayout>
|
||||||
</para></listitem>
|
</para></listitem>
|
||||||
</orderedlist>
|
<listitem><para>
|
||||||
You can now use the <filename>smart query</filename>
|
If you are using Security-Enhanced Linux
|
||||||
and <filename>smart install</filename> commands to find
|
(SELinux), you need to label the files as
|
||||||
and install packages from the repositories.
|
being accessible through Apache. Use the
|
||||||
</para>
|
following command from the development host
|
||||||
|
(this example assumes RPM package types):
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# chcon -R -h -t httpd_sys_content_t tmp/deploy/rpm
|
||||||
|
</literallayout>
|
||||||
|
</para></listitem>
|
||||||
|
</orderedlist>
|
||||||
|
</para>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id='package-server-lighttpd'>
|
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|
<title>Serving Packages via lighttpd</title>
|
||||||
|
<para>
|
||||||
|
If you are using lighttpd all you need
|
||||||
|
to do is to provide a link from your
|
||||||
|
${TMPDIR}/deploy/<package-format> directory to
|
||||||
|
lighttpd's document-root. You can determine the
|
||||||
|
specifics of your lighttpd installation by looking
|
||||||
|
through its configuration file which is usually found
|
||||||
|
at: <filename>/etc/lighttpd/lighttpd.conf</filename>.
|
||||||
|
</para><para>
|
||||||
|
For example, if you are using IPK, if
|
||||||
|
lighttpd's document-root is set to
|
||||||
|
<filename>/var/www/lighttpd</filename>, and if you had
|
||||||
|
packages for a target named "BOARD"
|
||||||
|
then you might create a link from your build location
|
||||||
|
to lighttpd's document-root as follows:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# ln -s $(PWD)/tmp/deploy/ipk /var/www/lighttpd/BOARD-dir
|
||||||
|
</literallayout>
|
||||||
|
</para><para>
|
||||||
|
At this point you need to start the lighttpd server.
|
||||||
|
The way in which you start the server will vary by
|
||||||
|
distribution, but one basic way to start it by hand
|
||||||
|
would be:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# lighttpd -f /etc/lighttpd/lighttpd.conf
|
||||||
|
</literallayout>
|
||||||
|
</para>
|
||||||
|
</section>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
<section id='runtime-package-management-ipk'>
|
<section id='runtime-package-management-target'>
|
||||||
<title>Using IPK</title>
|
<title>Target Setup</title>
|
||||||
|
|
||||||
<para>
|
<section id='runtime-package-management-target-rpm'>
|
||||||
Following are IPK-specific steps needed for setting up the
|
<title>Using RPM</title>
|
||||||
optional repository.
|
<para>
|
||||||
Perform these steps after working through the common steps
|
The application for performing runtime package
|
||||||
at the start of this section:
|
management of RPM packages on the target is called
|
||||||
<orderedlist>
|
<filename>smart</filename>.
|
||||||
<listitem><para>Install packages onto an
|
</para><para>
|
||||||
existing running system by first sharing the
|
On the target machine, you need to inform
|
||||||
<filename>tmp/deploy/ipk/</filename> directory
|
<filename>smart</filename> of every package database
|
||||||
through a web server and then by changing
|
you wish to use. As an example, suppose your target
|
||||||
<filename>/etc/opkg/base-feeds.conf</filename>
|
device can use the following 3 package databases from
|
||||||
to point at the shared server.
|
a server named <filename>server.name</filename>:
|
||||||
Following is an example:
|
<filename>all</filename>, <filename>i586</filename>,
|
||||||
<literallayout class='monospaced'>
|
and <filename>qemux86</filename>. Given this example,
|
||||||
src/gz all http://www.mysite.com/somedir/deploy/ipk/all
|
issue the following commands on the target:
|
||||||
src/gz armv7a http://www.mysite.com/somedir/deploy/ipk/armv7a
|
<literallayout class='monospaced'>
|
||||||
src/gz beagleboard http://www.mysite.com/somedir/deploy/ipk/beagleboard
|
# smart channel --add all type=rpm-md baseurl=http://server.name/rpm/all
|
||||||
</literallayout></para></listitem>
|
# smart channel --add i585 type=rpm-md baseurl=http://server.name/rpm/i586
|
||||||
<listitem><para>From the target machine, fetch the
|
# smart channel --add qemux86 type=rpm-md baseurl=http://server.name/rpm/qemux86
|
||||||
repository information using this command:
|
</literallayout>
|
||||||
<literallayout class='monospaced'>
|
Also from the target machine, fetch the repository
|
||||||
opkg update
|
information using this command:
|
||||||
</literallayout></para></listitem>
|
<literallayout class='monospaced'>
|
||||||
</orderedlist>
|
# smart update
|
||||||
You can now use the <filename>opkg list</filename> and
|
</literallayout>
|
||||||
<filename>opkg install</filename> commands to find and
|
You can now use the <filename>smart query</filename>
|
||||||
install packages from the repositories.
|
and <filename>smart install</filename> commands to
|
||||||
</para>
|
find and install packages from the repositories.
|
||||||
|
</para>
|
||||||
|
</section>
|
||||||
|
|
||||||
|
<section id='runtime-package-management-target-ipk'>
|
||||||
|
<title>Using IPK</title>
|
||||||
|
<para>
|
||||||
|
The application for performing runtime package
|
||||||
|
management of IPK packages on the target is called
|
||||||
|
<filename>opkg</filename>.
|
||||||
|
</para><para>
|
||||||
|
In order to inform <filename>opkg</filename> of the
|
||||||
|
package databases you wish to use, simply create one
|
||||||
|
or more <filename>*.conf</filename> files in the
|
||||||
|
<filename>/etc/opkg</filename> directory on the target
|
||||||
|
and <filename>opkg</filename> will use them to find
|
||||||
|
its available package databases. As an example if you
|
||||||
|
configured your HTTP server on your machine named
|
||||||
|
<filename>www.mysite.com</filename> to serve files
|
||||||
|
from a <filename>BOARD-dir</filename> directory under
|
||||||
|
its document-root you might create a configuration
|
||||||
|
file on the target called
|
||||||
|
<filename>/etc/opkg/base-feeds.conf</filename> which
|
||||||
|
contains:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
src/gz all http://www.mysite.com/BOARD-dir/all
|
||||||
|
src/gz armv7a http://www.mysite.com/BOARD-dir/armv7a
|
||||||
|
src/gz beagleboard http://www.mysite.com/BOARD-dir/beagleboard
|
||||||
|
</literallayout>
|
||||||
|
</para>
|
||||||
|
<note>
|
||||||
|
As a way of making it easier to generate and make
|
||||||
|
these IPK configuration files available on your
|
||||||
|
target, the <filename>meta-oe</filename> layer
|
||||||
|
provides a recipe called
|
||||||
|
<filename>distro-feed-configs</filename> (which
|
||||||
|
provides a package by the same name). When you
|
||||||
|
include this package into your image, it will
|
||||||
|
automatically generate and include a set of
|
||||||
|
<filename>*.conf</filename> files in the image's
|
||||||
|
<filename>/etc/opkg</filename> directory which will
|
||||||
|
provide your target's opkg tool with any and all
|
||||||
|
package databases your build will generate. The only
|
||||||
|
catch is that this recipe can't possibly imagine your
|
||||||
|
server's DNS name/IP address, so somewhere in your
|
||||||
|
configuration you need to set a variable called
|
||||||
|
<filename>DISTRO_FEED_URI</filename> which will point
|
||||||
|
to your server and the location within the
|
||||||
|
document-root which contains the databases. For
|
||||||
|
example: if you are serving your packages over HTTP,
|
||||||
|
your server's IP address is 192.168.7.1, and your
|
||||||
|
databases are located in a directory called
|
||||||
|
<filename>BOARD-dir</filename> underneath your HTTP
|
||||||
|
server's document-root then set
|
||||||
|
<filename>DISTRO_FEED_URI</filename> to
|
||||||
|
<filename>http://192.168.7.1/BOARD-dir</filename>.
|
||||||
|
</note>
|
||||||
|
<para>
|
||||||
|
On the target machine, fetch (or refresh) the
|
||||||
|
repository information using this command:
|
||||||
|
<literallayout class='monospaced'>
|
||||||
|
# opkg update
|
||||||
|
</literallayout>
|
||||||
|
You can now use the <filename>opkg list</filename> and
|
||||||
|
<filename>opkg install</filename> commands to find and
|
||||||
|
install packages from the repositories.
|
||||||
|
</para><para>
|
||||||
|
</para>
|
||||||
|
</section>
|
||||||
</section>
|
</section>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue