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| | {{admon/warning |This page has been moved out of the wiki. The current version of this document is located at https://docs.fedoraproject.org/en-US/package-maintainers/Using_the_Koji_Build_System/ Please update your bookmarks.}} |
| = Using Koji in Fedora =
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| The [[Koji| Koji Build System]] is Fedora's RPM buildsystem. Packagers use the koji client to request package builds and get information about the buildsystem. Koji runs on top of Mock to build RPM packages for specific architectures and ensure that they build correctly.
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| There is also a [[Zh/使用Koji编译打包系统|simplified Chinese edition]].
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| == Installing Koji ==
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| ==== Installing the Koji CLI ====
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| Everything you need to use Koji (and be a Fedora contributor) can be installed in a single step:
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| <pre>
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| yum install fedora-packager
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| </pre>
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| fedora-packager provides useful scripts to help maintain and setup your koji environment. Additionally, it includes dependencies on the Koji CLI, so it will be installed when you install <code>fedora-packager</code>. The command is called <code>koji</code> and is included in the main koji package. By default the koji tool authenticates to the central server using Kerberos. However SSL and username/password authentications are available. You will need to have a valid authentication token to use many features. However, many of the read-only commands will work without authentication.
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| ==== Fedora Account System (FAS2) Setup ====
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| In order to interface with the koji server, maintainers will need to run
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| <pre>
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| /usr/bin/fedora-packager-setup
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| </pre>
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| Each user on a system will need to run fedora-packager-setup if they wish to use Koji to build Fedora packages. Each user has their own certificates that authenticate them.
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| {{admon/tip|Plague users rejoice!|For existing users of plague (the old build system that preceded Koji), <code>fedora-packager-setup</code> will use your existing certificates. If you did not have plague before, it will get the server CA certs and tell you where to get your user cert.}} | |
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| ===== Fedora Certificates =====
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| Koji uses three certificates:
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| ; <code>~/.fedora.cert</code> (specific to the Fedora Maintainer) : This cert is generated from [https://admin.fedoraproject.org/accounts/user/gencert this form] in [[Infrastructure/AccountSystem | FAS]]. It should have been generated when you became maintainer. You may need to refresh it when it expires.
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| the following are downloaded automatically by fedora-packager-setup and dont need to be manually setup
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| ; <code>~/.fedora-upload-ca.cert</code> (The certificate for the Certificate Authority used to sign the user keys.) : It can be manually downloaded from [https://admin.fedoraproject.org/accounts/fedora-upload-ca.cert here] or <code>fedora-packager-setup or fedora-cert -n</code> should fetch it. using the CLI is prefered.
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| ; <code>~/.fedora-server-ca.cert</code> (The certificate for the Certificate Authority used to sign the build system's server keys.) : It can be downloaded manually from [https://admin.fedoraproject.org/accounts/fedora-server-ca.cert here] or <code>fedora-packager-setup</code> should fetch it.
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| {{admon/warning|RHEL6 cert bug|If you're using RHEL6, an incompatibility between RHEL6's openssl and nss causes certificates downloaded from fas to fail to work with some fedpkg tools. [[https://bugzilla.redhat.com/show_bug.cgi?id=631000 Bug 631000 rhel6 openssl creates PKCS#8 encoded PEM RSA private key files, nss can't read them]]. The cert can be made compatible using this command: <code>(openssl x509 -in ~/.fedora.cert -text; echo; openssl rsa -in ~/.fedora.cert) > fedora.cert.new</code>}}
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| ==== Koji Config ====
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| The global local client configuration file for koji is <code>/etc/koji.conf</code>. You should not need to change this from the defaults for building Fedora packages, as running <code>fedora-packager-setup</code> will create a set of configuration files in ~/.koji/ file for your user. These will allow you to use the primary build system as well as secondary arch build systems.
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| == The web interface ==
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| {{admon/tip|Optional|The web interface is optional. You may skip to the
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| next section if you like.}}
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| The primary interface for viewing Koji data is a web application.
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| It is available at http://koji.fedoraproject.org/koji/ .
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| Most of the interface is read-only, but with sufficient privileges,
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| you can log in and perform some additional actions. For example:
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| * Cancel a build
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| * Resubmit a failed task
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| * Setup a notification
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| Those with admin privileges will find additional actions, such as:
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| * Create/Edit/Delete a tag
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| * Create/Edit/Delete a target
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| * Enable/Disable a build host
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| The web site utilizes SSL authentication. In order to log in you will need a
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| valid SSL certificate and your web browser will need to be configured to trust
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| the SSL cert. Instructions on how to do this are printed when running
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| <code>fedora-packager-setup --with-browser-cert</code>.
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| {{admon/warning|Using the certificate directly downloaded from the FAS web
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| interface|If you have generated and downloaded the certificate
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| <code>~/.fedora.cert</code> directly from FAS using the form referenced
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| above, you need to convert it into a format that the browser can understand
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| using the following command:
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| <code>openssl pkcs12 -export -in ~/.fedora.cert -CAfile ~/.fedora-upload-ca.cert -out ~/fedora-browser-cert.p12</code>,
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| where <code>.fedora-upload-ca.cert</code> can be downloaded from the URL
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| referenced above.}}
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| ==== Installing SSL Certificates in Firefox ====
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| {{admon/note|Optional|You only need to check these instructions if you are
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| intending to authenticate with the web interface with Firefox. Authenticating
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| with the web interface is optional.}}
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| Once you have created your FAS account, generated your certificate in the
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| form posted in the link above and ran
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| <code>fedora-packager-setup --with-browser-cert</code>, you will need
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| to import it into your web browser. You can do this in Firefox by doing
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| the following:
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| 1. Launch Firefox and click on the '''Edit''' menu from the toolbar
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| 2. Select '''Preferences''' in the sub-menu which appears.
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| 3. This should open the '''Preferences''' window where you can switch to the '''Advanced''' section
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| 4. In the '''Advanced''' section switch to the '''Encryption''' tab
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| 5. Click on the '''View Certificates''' button and the Certificates window will appear
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| 6. Switch to the '''Your Certificates''' tab and click on the '''Import''' button
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| 7. Point to where your Fedora Certificate is located and click '''Open''' (fedora-packager-setup will have told you where it was saved and will have asked you to set a password for the cert)
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| You should now be able to see your Fedora Certificate listed under '''Your Certificates''' and you should be able to authenticate with the koji web interface.
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| ==== Installing SSL Certificates in Chromium ====
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| {{admon/note|Optional|You only need to check these instructions if you are
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| intending to authenticate with the web interface with Chromium. Authenticating
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| with the web interface is optional.}}
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| Chromium uses the NSS Shared DB, you will need the nss-tools package installed.
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| <pre>
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| pk12util -d sql:$HOME/.pki/nssdb -i fedora-browser-cert.p12
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| </pre>
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| ==== Notifications ====
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| When authenticated with the Koji web interface, you can setup a notification
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| requests to make sure you do not miss when a package you care about gets
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| built. Login and scroll to the bottom of the page, there you should find a
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| ''[https://koji.fedoraproject.org/koji/notificationcreate Add a notification]''
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| link and a list of your configured notifications.
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| == Building with fedpkg targets ==
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| Every push is automatically tagged via git. All you have done to build the package is to run,
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| <pre>
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| fedpkg build
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| </pre>
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| This will trigger a build request for the branch. Easy!
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| It is also possible to target a specific koji tag as follows:
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| <pre>
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| fedpkg build --target TARGET
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| </pre>
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| for example, if building on rawhide against a special tag created by rel-eng for updating API for many packages, e.g. <code>dist-f14-python</code> you would use the following:
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| <pre>
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| fedpkg build --target 'dist-f14-python'
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| </pre>
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| ==== Chained builds ====
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| {{Admon/warning | chain-builds only work when building on the devel/ branch (aka rawhide). To chain-build packages to update a released OS version, [https://fedoraproject.org/wiki/Bodhi/BuildRootOverrides set up an override using bodhi] requesting packages to be included in the proper buildroot.}}
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| Sometimes you want to make sure than one build succeeded before
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| launching the next one, for example when you want to rebuild
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| a package against a just rebuilt dependency. In that case
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| you can use a chain build with:
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| fedpkg chain-build libwidget libgizmo
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| The current package is added to the end of the CHAIN list. Colons (:) can be used in the CHAIN parameter to define groups of packages. Packages in any single group will be built in parallel and all packages in a group must build successfully and populate the repository before the next group will begin building. For example:
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| fedpkg chain-build libwidget libaselib : libgizmo :
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| will cause libwidget and libaselib to be built in parallel, followed by libgizmo and then the currect directory package. If no groups are defined, packages will be built sequentially.
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| If a build fail, following builds are cancelled but the builds that already succeeded are pushed to the repository.
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| == Scratch Builds ==
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| Sometime it is useful to be able to build a package against the buildroot but without actually including it in the release. This is called a scratch build. The following section covers using koji directly as well as the fedpkg tool to do scratch builds. To create a scratch build from changes you haven't committed, do the following:
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| <pre>
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| rpmbuild -bs foo.spec
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| koji build --scratch rawhide foo.srpm
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| </pre>
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| From the latest git commit:
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| <pre>
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| koji build --scratch rawhide 'git url'
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| </pre>
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| Warning: Scratch builds will ''not'' work correctly if your .spec file does something different depending on the value of %fedora, %fc9, and so on. Macro values like these are set by the ''builder'', not by koji, so the value of %fedora will be for whatever created the source RPM, and ''not'' what it's being built on. Non-scratch builds get around this by first re-building the source RPM.
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| If you are have committed the changes to git and you are in the current branch, you can do a scratch build with fedpkg tool which wraps the koji command line tool with the appropriate options:
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| <pre>
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| fedpkg scratch-build
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| </pre>
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| if you want to do a scratch build for a specific architecture, you can type:
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| <pre>
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| fedpkg scratch-build-<archs>
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| </pre>
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| <archs> can be a comma separated list of several architectures.
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| finally is possible to combine the scratch-build command with a specific koji tag in the form:
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| <pre>
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| fedpkg scratch-build --target TARGET
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| </pre>
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| fedpkg scratch-build --help or koji build --help for more information.
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| == Build Failures ==
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| If your package fails to build, you will see something like this:
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| <pre>
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| 420066 buildArch kernel-2.6.18-1.2739.10.9.el5.jjf.215394.2.src.rpm,
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| ia64): open (build-1.example.com) -> FAILED: BuildrootError:
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| error building package (arch ia64), mock exited with status 10
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| </pre>
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| You can figure out why the build failed by looking at the log files. If there is a build.log, start there. Otherwise, look at init.log.
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| Logs can be found via the web interface in the Task pages for the failed task. Alternatively the koji client can be used to view the logs via the <code>watch-logs</code> command. See the help output for more details.
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| == Advanced use of Koji ==
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| We've tried to make Koji self-documenting wherever possible. The command line tool will print a list of valid commands and each command supports --help. For example:
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| <pre>
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| $ koji help
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| Koji commands are:
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| build Build a package from source
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| cancel-task Cancel a task
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| help List available commands
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| latest-build Print the latest rpms for a tag
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| latest-pkg Print the latest builds for a tag
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| [...]
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| </pre>
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| <pre>
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| $ koji build --help
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| usage: koji build [options] tag URL
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| (Specify the --help global option for a list of other help options)
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| options:
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| -h, --help show this help message and exit
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| --skip-tag Do not attempt to tag package
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| --scratch Perform a scratch build
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| --nowait Don't wait on build
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| [...]
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| </pre>
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| ==== Using koji to generate a mock config to replicate a buildroot ====
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| koji can be used to replicate a build root for local debugging
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| <pre>
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| koji mock-config --help
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| Usage: koji mock-config [options] name
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| (Specify the --help global option for a list of other help options)
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| Options:
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| -h, --help show this help message and exit
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| --arch=ARCH Specify the arch
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| --tag=TAG Create a mock config for a tag
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| --task=TASK Duplicate the mock config of a previous task
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| --buildroot=BUILDROOT
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| Duplicate the mock config for the specified buildroot
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| id
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| --mockdir=DIR Specify mockdir
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| --topdir=DIR Specify topdir
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| --topurl=URL url under which Koji files are accessible
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| --distribution=DISTRIBUTION
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| Change the distribution macro
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| -o FILE Output to a file
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| </pre>
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| for example to get the latest buildroot for dist-f12-build run
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| <pre>
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| koji mock-config --tag dist-f12-build --arch=x86_64 --topurl=http://kojipkgs.fedoraproject.org/ dist-f12
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| </pre>
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| you will need to pass in --topurl=http://kojipkgs.fedoraproject.org/ to any mock-config command to get a working mock-config from fedoras koji.
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| ==== Using Koji to control tasks ====
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| List tasks:
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| <pre>
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| koji list-tasks
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| </pre>
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| List only tasks requested by you:
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| <pre>
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| koji list-tasks --mine
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| </pre>
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| requeue an already-processed task: general syntax is: koji resubmit [options] taskID
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| <pre>
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| koji resubmit 3
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| </pre>
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| ==== Building a Package with the command-line tool ====
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| Instead of using the fedpkg target, you can also directly
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| use the command_line tool, koji.
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| To build a package, the syntax is:
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| <pre>
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| $ koji build <build target> <git URL>
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| </pre>
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| For example:
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| {{Admon/warning | Replace <code>dist-f14</code> with the tag you wish to build against, e.g. <code>dist-rawhide</code>}}
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| <pre>
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| $ koji build dist-f14 'git url'
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| </pre>
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| The koji build command creates a build task in Koji. By default the tool will wait and print status updates until the build completes. You can override this with the --nowait option.
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| </pre>
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| NOTE: For fedora koji, the git url MUST be based on pkgs.fedoraproject.org. Other arbitrary git repos cannot be used for builds.
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| == Koji tags and packages organization ==
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| ==== Terminology ====
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| In Koji, it is sometimes necessary to distinguish between a package in general, a specific build of a package, and the various rpm files created by a build. When precision is needed, these terms should be interpreted as follows:
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| * Package: The name of a source rpm. This refers to the package in general and not any particular build or subpackage. For example: kernel, glibc, etc.
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| * Build: A particular build of a package. This refers to the entire build: all arches and subpackages. For example: kernel-2.6.9-34.EL, glibc-2.3.4-2.19.
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| * RPM: A particular rpm. A specific arch and subpackage of a build. For example: kernel-2.6.9-34.EL.x86_64, kernel-devel-2.6.9-34.EL.s390, glibc-2.3.4-2.19.i686, glibc-common-2.3.4-2.19.ia64
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| ==== Tags and targets ====
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| Koji organizes packages using tags. In Koji a tag is roughly a collection of packages:
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| * Tags support inheritance
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| * Each tag has its own list of valid packages (inheritable)
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| * Package ownership can be set per-tag (inheritable)
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| * When you build you specify a target rather than a tag
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| A build target specifies where a package should be built and how it should be tagged afterwards. This allows target names to remain fixed as tags change through releases.
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| ==== Koji commands for tags ====
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| ===== Targets =====
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| You can get a full list of build targets with the following command:
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| <pre>
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| $ koji list-targets
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| </pre>
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| You can see just a single target with the --name option:
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| <pre>
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| $ koji list-targets --name dist-f14
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| Name Buildroot Destination
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| ---------------------------------------------------------------------------------------------
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| dist-f14 dist-f14-build dist-f14
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| </pre>
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| This tells you a build for target dist-f14 will use a buildroot with packages from the tag dist-f14-build and tag the resulting packages as dist-f14.
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| Watch out: You probably don't want to build against dist-rawhide. If Fedora N is the latest one out, to build to the next one, choose dist-f{N+1}.
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| ===== Tags =====
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| You can get a list of tags with the following command:
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| <pre>
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| $ koji list-tags
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| </pre>
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| ===== Packages =====
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| As mentioned above, each tag has its own list of packages that may be placed in the tag. To see that list for a tag, use the list-pkgs command:
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| <pre>
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| $ koji list-pkgs --tag dist-f14
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| </pre>
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| The first column is the name of the package, the second tells you which tag the package entry has been inherited from, and the third tells you the owner of the package.
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| ===== Latest Builds =====
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| To see the latest builds for a tag, use the latest-pkg command:
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| <pre>
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| $ koji latest-pkg --all dist-f14
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| </pre>
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| The output gives you not only the latest builds, but which tag they have been inherited from and who built them.
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| [[Category:Package Maintainers]]
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