rpm-ostree/man/rpm-ostree.xml

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<refentry id="rpm-ostree">

  <refentryinfo>
    <title>rpm-ostree</title>
    <productname>rpm-ostree</productname>

    <authorgroup>
      <author>
        <contrib>Developer</contrib>
        <firstname>Colin</firstname>
        <surname>Walters</surname>
        <email>walters@redhat.com</email>
      </author>
    </authorgroup>
  </refentryinfo>

  <refmeta>
    <refentrytitle>rpm-ostree</refentrytitle>
    <manvolnum>1</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>rpm-ostree</refname>
    <refpurpose>
      Operating system upgrade and software management tool
    </refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>rpm-ostree</command>
      <arg choice="req">COMMAND</arg>
      <arg choice="opt" rep="repeat">OPTIONS</arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para>
      rpm-ostree (also called "atomic" if configured) is a system
      software management tool that combines features of both
      traditional RPM and OSTree.  It has support for both server-side
      composing of trees, as well as client-side upgrading and
      management of deployments.
    </para>

    <para>
      On an rpm-ostree managed system, the traditional
      <literal>yum</literal> (if installed) and <literal>rpm</literal>
      tools operate in a read-only state; the RPM database is stored
      in <literal>/usr/share/rpm</literal> which is underneath a
      read-only bind mount.
    </para>

    <para>
      Instead of live package-by-package upgrades, the underlying
      OSTree layer replicates a complete filesystem tree from a
      compose server into a new deployment, available on the next
      reboot.  One benefit of this is that there will always be a
      previous deployment, available for rollback.
    </para>

    <para>
      Note in this "pure replication" model, at present there is no
      dependency resolution on the client machines, nor any ability to
      add or remove packages.  You may however use /usr/local/bin, or
      an application mechanism such as
      <citerefentry>
        <refentrytitle>docker</refentrytitle>
        <manvolnum>1</manvolnum>
      </citerefentry>.
    </para>
  </refsect1>

  <refsect1>
    <title>Commands</title>

    <variablelist>

      <varlistentry>
        <term><command>compose</command></term>

        <listitem>
          <para>
            Entrypoint for tree composition; most typically used on
            servers to prepare trees for replication by client systems.
            Currently has two subcommands, <literal>tree</literal> and
            <literal>sign</literal>.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>db</command></term>

        <listitem>
          <para>
            Gives information pertaining to <literal>rpm</literal> data
            within the file system trees within the ostree commits.
            There are three sub-commands:
          </para>

          <para>
            <command>diff</command> to see how the packages are
            different between the trees in two commits.  The
            <option>--format=diff</option> option uses
            <literal>-</literal> for removed packages,
            <literal>+</literal> for added packages, and finally
            <literal>!</literal> for the old version of an updated
            package, with a following <literal>=</literal> for the new
            version.
          </para>

          <para>
            <command>list</command> to see which packages are within the
            commit(s) (works like yum list). At least one commit must be
            specified, but more than one or a range will also work.
          </para>

          <para>
            <command>version</command> to see the rpmdb version of the
            packages within the commit (works like yum version
            nogroups). At least one commit must be specified, but more
            than one or a range will also work.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>deploy</command></term>

        <listitem>
          <para>
            Takes version, branch, or commit ID as an argument, and
            creates a new deployment using it, setting it up as the
            default for the next boot.  Unlike most other commands, this
            will automatically fetch and traverse the origin history to
            find the target. By design, this has no effect on your
            running filesystem tree. You must reboot for any changes to
            take effect.
          </para>

          <para>
            In addition to exit status 0 for success and 1 for error,
            this command also uses exit status 77 to indicate that the
            system is already on the specified commit.  This tristate
            return model is intended to support idempotency-oriented
            systems automation tools like Ansible.
          </para>

          <para>
            <command>--reboot</command> or <command>-r</command> to
            initiate a reboot after the upgrade is prepared.
          </para>

          <para>
            <command>--preview</command> download enough metadata to
            inspect the RPM diff, but do not actually create a new
            deployment.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>install (pkg-add)</command></term>

        <listitem>
          <para>
            Takes one or more packages as arguments. The packages are
            fetched from the enabled repositories in
            <filename>/etc/yum.repos.d/</filename> and are overlayed on
            top of a new deployment.
          </para>

          <para>
            <command>--reboot</command> or <command>-r</command> to
            initiate a reboot after the deployment is prepared.
          </para>

          <para>
            <command>--dry-run</command> or <command>-n</command> to
            exit after printing the transaction rather than downloading
            the packages and creating a new deployment.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>uninstall (pkg-remove)</command></term>

        <listitem>
          <para>
            Takes one or more packages as arguments. The packages are
            removed from the set of packages that are currently
            overlayed. The remaining packages in the set (if any) are
            fetched from the enabled repositories in
            <filename>/etc/yum.repos.d/</filename> and are overlayed on
            top of a new deployment.
          </para>

          <para>
            <command>--reboot</command> or <command>-r</command> to
            initiate a reboot after the deployment is prepared.
          </para>

          <para>
            <command>--dry-run</command> or <command>-n</command> to
            exit after printing the transaction rather than downloading
            the packages and creating a new deployment.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>rebase</command></term>

        <listitem>
          <para>
            Switch to a different branch (possibly using a new remote),
            while preserving all of the state that <command>upgrade</command>
            does, such as <literal>/etc</literal> changes, any layered RPM
            packages, etc.
          </para>
          <para>
            The full syntax is <literal>rebase REMOTENAME:BRANCHNAME</literal>.
            Specifying just <literal>BRANCHNAME</literal> will reuse the same
            remote. You may also omit one of <literal>REMOTENAME</literal> or
            <literal>BRANCHNAME</literal> (keeping the colon). In the former
            case, the branch refers to a local branch; in the latter case, the
            same branch will be used on a different remote.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>rollback</command></term>

        <listitem>
          <para>
            OSTree manages an ordered list of bootloader entries, called
            "deployments".  The entry at index 0 is the default
            bootloader entry.  Each entry has a separate
            <filename>/etc</filename>, but they all share a single
            <filename>/var</filename>.  You can use the bootloader to
            choose between entries by pressing Tab to interrupt
            startup.
          </para>

          <para>
            This command then changes the default bootloader entry.  If
            the current default is booted, then set the default to the
            previous entry.  Otherwise, make the currently booted tree
            the default.
          </para>

          <para>
            <command>--reboot</command> or <command>-r</command> to
            initiate a reboot after rollback is prepared.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>status</command></term>

        <listitem>
          <para>
            Gives information pertaining to the current deployment in
            use. Lists the names and refspecs of all possible
            deployments in order, such that the first deployment in the
            list is the default upon boot. The deployment marked with *
            is the current booted deployment, and marking with 'r'
            indicates the most recent upgrade (the newest deployment
            version).
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>upgrade</command></term>

        <listitem>
          <para>
            Download the latest version of the current tree, and deploy
            it, setting it up as the default for the next boot. By
            design, this has no effect on your running filesystem tree.
            You must reboot for any changes to take effect.
          </para>

          <para>
            In addition to exit status 0 for success and 1 for error,
            this command also uses exit status 77 to indicate that no
            upgrade is available.
          </para>

          <para>
            <command>--reboot</command> or <command>-r</command> to
            initiate a reboot after upgrade is prepared.
          </para>

          <para>
            <command>--allow-downgrade</command> to permit deployment of
            chronologically older trees.
          </para>

          <para>
            <option>--preview</option> to download only /usr/share/rpm
            in order to do a package-level diff between the two
            versions.
          </para>

          <para>
            <option>--check</option> to just check if an upgrade is
            available, without downloading it or performing a
            package-level diff.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>cleanup</command></term>

        <listitem>
          <para>
            Commands such as <command>upgrade</command> create new deployments,
            which affect the next boot, and take up additional storage space. In
            some cases, you may want to undo and clean up these operations. This
            command supports both removing additional deployments such as the
            "pending" deployment (the next boot) as well as the default rollback
            deployment. Use <option>-p/--pending</option> to remove the pending
            deployment, and <option>-r/--rollback</option> to remove the
            rollback.
          </para>

          <para>
            The <option>-b/--base</option> option does not affect finished
            deployments, but will clean up any transient allocated space that
            may result from interrupted operations. If you want to free up disk
            space safely, use this option first.
          </para>

          <para>
            The <option>-m/--repomd</option> option cleans up cached RPM
            repodata and any partially downloaded (but not imported) packages.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>reload</command></term>

        <listitem>
          <para>
            Some configuration and state data such as
            <literal>/etc/ostree/remotes.d</literal> changes may not be
            reflected until a daemon reload is invoked. Use this command to
            initiate a reload.
          </para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>initramfs</command></term>

        <listitem>
          <para>
            By default, the primary use case mode for rpm-ostree is to replicate
            an initramfs as part of a base layer. However, some use cases
            require locally regenerating it to add configuration or drivers. Use
            <command>rpm-ostree initramfs</command> to inspect the current
            status.
          </para>

          <para>
            Use <command>--enable</command> to turn on client side initramfs
            regeneration. A new deployment will be generated, and after reboot,
            further upgrades will continue regenerating. You must reboot for the
            new initramfs to take effect.
          </para>

          <para>
            To append additional custom arguments to the initramfs program
            (currently dracut), use <command>--arg</command>. For example,
            <command>--arg=-I --arg=/etc/someconfigfile</command>.
          </para>

          <para>
            The <command>--disable</command> option will disable
            regeneration.  You must reboot for the change to take effect.
          </para>
        </listitem>
      </varlistentry>

    </variablelist>
  </refsect1>

  <refsect1>
    <title>See Also</title>

    <para>
      <citerefentry><refentrytitle>ostree</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>rpm</refentrytitle><manvolnum>8</manvolnum></citerefentry>
    </para>
  </refsect1>

</refentry>