In this new crazy world of containers and immutable hosts, one might still want to run previous generation software such as Puppet on a current generation Atomic host. This article will explain how you can do that, and offer some proof of concept code.
The atomic host doesn’t provide a yum or dnf command, because the software is pre-baked into a read-only /usr/ partition. To “install” (to use) additional software, it usually needs to be distributed and run as a container.
The Dockerfile which describes the docker container that we will build, has two important sections:
ENV FACTER_fqdn=localhost ENTRYPOINT ["puppet", "apply"]
The ENTRYPOINT verb causes docker to run the puppet command that we built into the container, when the container is run with externally provided arguments. The ENV verb causes some facter errors to be suppressed, since facter isn’t running on the host. The rest of the file contains boilerplate and other build/run dependencies.
You can build this container yourself manually, or if you are an Oh-My-Vagrant user, then you can use the supplied omv.yaml file to build the container automatically. A build with Oh-My-Vagrant looks like this:
$ time vup omv1 Bringing machine 'omv1' up with 'libvirt' provider... ==> omv1: Creating image (snapshot of base box volume). ==> omv1: Creating domain with the following settings... ==> omv1: -- Name: omv_omv1 ==> omv1: -- Domain type: kvm ==> omv1: -- Cpus: 1 ==> omv1: -- Memory: 512M ==> omv1: -- Base box: centos-7.1-docker ==> omv1: -- Storage pool: default ==> omv1: -- Image: /var/lib/libvirt/images/omv_omv1.img ==> omv1: -- Volume Cache: default ==> omv1: -- Kernel: ==> omv1: -- Initrd: ==> omv1: -- Graphics Type: vnc ==> omv1: -- Graphics Port: 5900 ==> omv1: -- Graphics IP: 127.0.0.1 ==> omv1: -- Graphics Password: Not defined ==> omv1: -- Video Type: cirrus ==> omv1: -- Video VRAM: 9216 ==> omv1: -- Keymap: en-us ==> omv1: -- Command line : ==> omv1: Starting domain. ==> omv1: Waiting for domain to get an IP address... ==> omv1: Waiting for SSH to become available... ==> omv1: Starting domain. ==> omv1: Waiting for domain to get an IP address... ==> omv1: Waiting for SSH to become available... ==> omv1: Creating shared folders metadata... ==> omv1: Setting hostname... ==> omv1: Rsyncing folder: /home/james/code/oh-my-vagrant/vagrant/ => /vagrant ==> omv1: Configuring and enabling network interfaces... ==> omv1: Updating /etc/hosts file on active guest machines... ==> omv1: Running provisioner: shell... omv1: Running: inline script ==> omv1: Running provisioner: shell... omv1: Running: inline script ==> omv1: Running provisioner: docker... omv1: Configuring Docker to autostart containers... ==> omv1: Running provisioner: docker... omv1: Configuring Docker to autostart containers... ==> omv1: Building Docker images... ==> omv1: -- Path: /vagrant/docker/spc-puppet-apply ==> omv1: Sending build context to Docker daemon 122.9 kB ==> omv1: Sending build context to Docker daemon ==> omv1: Step 0 : FROM centos:7 ==> omv1: ---> 0114405f9ff1 ==> omv1: Step 1 : MAINTAINER James Shubin <james@shubin.ca> ==> omv1: ---> Running in 2dbdc37494e9 ==> omv1: ---> e154b3cfed7f ==> omv1: Removing intermediate container 2dbdc37494e9 ==> omv1: Step 2 : RUN echo Hello from purpleidea and aweiteka > README ==> omv1: ---> Running in 97475154152f ==> omv1: ---> e4728d71caac ==> omv1: Removing intermediate container 97475154152f ==> omv1: Step 3 : ADD el7-puppet.repo /etc/yum.repos.d/ ==> omv1: ---> c591e0a9a54d ==> omv1: Removing intermediate container 24e55893313c ==> omv1: Step 4 : ADD RPM-GPG-KEY-puppetlabs /etc/pki/rpm-gpg/ ==> omv1: ---> 223549fbf661 ==> omv1: Removing intermediate container 2bceb998f1c3 ==> omv1: Step 5 : RUN yum install -y puppet ==> omv1: ---> Running in e44c9cf55dc5 ==> omv1: Loaded plugins: fastestmirror ==> omv1: Determining fastest mirrors ==> omv1: * base: centos.mirror.vexxhost.com ==> omv1: * extras: mirror.gpmidi.net ==> omv1: * updates: centos.mirror.vexxhost.com ==> omv1: Resolving Dependencies ==> omv1: --> Running transaction check ==> omv1: ---> Package puppet.noarch 0:3.7.5-1.el7 will be installed ==> omv1: --> Processing Dependency: ruby >= 1.8 for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: facter >= 1:1.7.0 for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: ruby >= 1.8.7 for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: hiera >= 1.0.0 for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: rubygem-json for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: libselinux-utils for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: ruby-augeas for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: ruby(selinux) for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: /usr/bin/ruby for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Processing Dependency: ruby-shadow for package: puppet-3.7.5-1.el7.noarch ==> omv1: --> Running transaction check ==> omv1: ---> Package facter.x86_64 1:2.4.3-1.el7 will be installed ==> omv1: --> Processing Dependency: net-tools for package: 1:facter-2.4.3-1.el7.x86_64 ==> omv1: --> Processing Dependency: virt-what for package: 1:facter-2.4.3-1.el7.x86_64 ==> omv1: --> Processing Dependency: pciutils for package: 1:facter-2.4.3-1.el7.x86_64 ==> omv1: --> Processing Dependency: dmidecode for package: 1:facter-2.4.3-1.el7.x86_64 ==> omv1: ---> Package hiera.noarch 0:1.3.4-1.el7 will be installed ==> omv1: ---> Package libselinux-ruby.x86_64 0:2.2.2-6.el7 will be installed ==> omv1: ---> Package libselinux-utils.x86_64 0:2.2.2-6.el7 will be installed ==> omv1: ---> Package ruby.x86_64 0:2.0.0.598-24.el7 will be installed ==> omv1: --> Processing Dependency: ruby-libs(x86-64) = 2.0.0.598-24.el7 for package: ruby-2.0.0.598-24.el7.x86_64 ==> omv1: --> Processing Dependency: rubygem(bigdecimal) >= 1.2.0 for package: ruby-2.0.0.598-24.el7.x86_64 ==> omv1: --> Processing Dependency: ruby(rubygems) >= 2.0.14 for package: ruby-2.0.0.598-24.el7.x86_64 ==> omv1: --> Processing Dependency: libruby.so.2.0()(64bit) for package: ruby-2.0.0.598-24.el7.x86_64 ==> omv1: ---> Package ruby-augeas.x86_64 0:0.4.1-3.el7 will be installed ==> omv1: --> Processing Dependency: augeas-libs >= 0.8.0 for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: --> Processing Dependency: libaugeas.so.0(AUGEAS_0.8.0)(64bit) for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: --> Processing Dependency: libaugeas.so.0(AUGEAS_0.1.0)(64bit) for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: --> Processing Dependency: libaugeas.so.0(AUGEAS_0.12.0)(64bit) for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: --> Processing Dependency: libaugeas.so.0(AUGEAS_0.10.0)(64bit) for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: --> Processing Dependency: libaugeas.so.0(AUGEAS_0.11.0)(64bit) for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: --> Processing Dependency: libaugeas.so.0()(64bit) for package: ruby-augeas-0.4.1-3.el7.x86_64 ==> omv1: ---> Package ruby-shadow.x86_64 1:2.2.0-2.el7 will be installed ==> omv1: ---> Package rubygem-json.x86_64 0:1.7.7-24.el7 will be installed ==> omv1: --> Running transaction check ==> omv1: ---> Package augeas-libs.x86_64 0:1.1.0-17.el7 will be installed ==> omv1: ---> Package dmidecode.x86_64 1:2.12-5.el7 will be installed ==> omv1: ---> Package net-tools.x86_64 0:2.0-0.17.20131004git.el7 will be installed ==> omv1: ---> Package pciutils.x86_64 0:3.2.1-4.el7 will be installed ==> omv1: --> Processing Dependency: pciutils-libs = 3.2.1-4.el7 for package: pciutils-3.2.1-4.el7.x86_64 ==> omv1: --> Processing Dependency: libpci.so.3(LIBPCI_3.2)(64bit) for package: pciutils-3.2.1-4.el7.x86_64 ==> omv1: --> Processing Dependency: libpci.so.3(LIBPCI_3.1)(64bit) for package: pciutils-3.2.1-4.el7.x86_64 ==> omv1: --> Processing Dependency: libpci.so.3(LIBPCI_3.0)(64bit) for package: pciutils-3.2.1-4.el7.x86_64 ==> omv1: --> Processing Dependency: hwdata for package: pciutils-3.2.1-4.el7.x86_64 ==> omv1: --> Processing Dependency: libpci.so.3()(64bit) for package: pciutils-3.2.1-4.el7.x86_64 ==> omv1: ---> Package ruby-libs.x86_64 0:2.0.0.598-24.el7 will be installed ==> omv1: ---> Package rubygem-bigdecimal.x86_64 0:1.2.0-24.el7 will be installed ==> omv1: ---> Package rubygems.noarch 0:2.0.14-24.el7 will be installed ==> omv1: --> Processing Dependency: rubygem(rdoc) >= 4.0.0 for package: rubygems-2.0.14-24.el7.noarch ==> omv1: --> Processing Dependency: rubygem(psych) >= 2.0.0 for package: rubygems-2.0.14-24.el7.noarch ==> omv1: --> Processing Dependency: rubygem(io-console) >= 0.4.2 for package: rubygems-2.0.14-24.el7.noarch ==> omv1: ---> Package virt-what.x86_64 0:1.13-5.el7 will be installed ==> omv1: --> Running transaction check ==> omv1: ---> Package hwdata.noarch 0:0.252-7.5.el7 will be installed ==> omv1: ---> Package pciutils-libs.x86_64 0:3.2.1-4.el7 will be installed ==> omv1: ---> Package rubygem-io-console.x86_64 0:0.4.2-24.el7 will be installed ==> omv1: ---> Package rubygem-psych.x86_64 0:2.0.0-24.el7 will be installed ==> omv1: --> Processing Dependency: libyaml-0.so.2()(64bit) for package: rubygem-psych-2.0.0-24.el7.x86_64 ==> omv1: ---> Package rubygem-rdoc.noarch 0:4.0.0-24.el7 will be installed ==> omv1: --> Processing Dependency: ruby(irb) = 2.0.0.598 for package: rubygem-rdoc-4.0.0-24.el7.noarch ==> omv1: --> Running transaction check ==> omv1: ---> Package libyaml.x86_64 0:0.1.4-11.el7_0 will be installed ==> omv1: ---> Package ruby-irb.noarch 0:2.0.0.598-24.el7 will be installed ==> omv1: --> Finished Dependency Resolution ==> omv1: ==> omv1: Dependencies Resolved ==> omv1: ==> omv1: ================================================================================ ==> omv1: Package Arch Version Repository Size ==> omv1: ================================================================================ ==> omv1: Installing: ==> omv1: puppet noarch 3.7.5-1.el7 puppetlabs-products 1.5 M ==> omv1: Installing for dependencies: ==> omv1: augeas-libs x86_64 1.1.0-17.el7 base 332 k ==> omv1: dmidecode x86_64 1:2.12-5.el7 base 78 k ==> omv1: facter x86_64 1:2.4.3-1.el7 puppetlabs-products 98 k ==> omv1: hiera noarch 1.3.4-1.el7 puppetlabs-products 23 k ==> omv1: hwdata noarch 0.252-7.5.el7 base 2.0 M ==> omv1: libselinux-ruby x86_64 2.2.2-6.el7 base 127 k ==> omv1: libselinux-utils x86_64 2.2.2-6.el7 base 135 k ==> omv1: libyaml x86_64 0.1.4-11.el7_0 base 55 k ==> omv1: net-tools x86_64 2.0-0.17.20131004git.el7 base 304 k ==> omv1: pciutils x86_64 3.2.1-4.el7 base 90 k ==> omv1: pciutils-libs x86_64 3.2.1-4.el7 base 45 k ==> omv1: ruby x86_64 2.0.0.598-24.el7 base 67 k ==> omv1: ruby-augeas x86_64 0.4.1-3.el7 puppetlabs-deps 22 k ==> omv1: ruby-irb noarch 2.0.0.598-24.el7 base 88 k ==> omv1: ruby-libs x86_64 2.0.0.598-24.el7 base 2.8 M ==> omv1: ruby-shadow x86_64 1:2.2.0-2.el7 puppetlabs-deps 14 k ==> omv1: rubygem-bigdecimal x86_64 1.2.0-24.el7 base 79 k ==> omv1: rubygem-io-console x86_64 0.4.2-24.el7 base 50 k ==> omv1: rubygem-json x86_64 1.7.7-24.el7 base 75 k ==> omv1: rubygem-psych x86_64 2.0.0-24.el7 base 77 k ==> omv1: rubygem-rdoc noarch 4.0.0-24.el7 base 318 k ==> omv1: rubygems noarch 2.0.14-24.el7 base 212 k ==> omv1: virt-what x86_64 1.13-5.el7 base 26 k ==> omv1: ==> omv1: Transaction Summary ==> omv1: ================================================================================ ==> omv1: Install 1 Package (+23 Dependent packages) ==> omv1: ==> omv1: Total download size: 8.6 M ==> omv1: Installed size: 27 M ==> omv1: Downloading packages: ==> omv1: warning: /var/cache/yum/x86_64/7/puppetlabs-products/packages/hiera-1.3.4-1.el7.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 4bd6ec30: NOKEY ==> omv1: ==> omv1: Public key for hiera-1.3.4-1.el7.noarch.rpm is not installed ==> omv1: warning: /var/cache/yum/x86_64/7/base/packages/dmidecode-2.12-5.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY ==> omv1: ==> omv1: Public key for dmidecode-2.12-5.el7.x86_64.rpm is not installed ==> omv1: Public key for ruby-augeas-0.4.1-3.el7.x86_64.rpm is not installed ==> omv1: -------------------------------------------------------------------------------- ==> omv1: Total 811 kB/s | 8.6 MB 00:10 ==> omv1: Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 ==> omv1: Importing GPG key 0xF4A80EB5: ==> omv1: Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" ==> omv1: Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 ==> omv1: Package : centos-release-7-1.1503.el7.centos.2.8.x86_64 (@CentOS/$releasever) ==> omv1: From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 ==> omv1: ==> omv1: Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs ==> omv1: Importing GPG key 0x4BD6EC30: ==> omv1: Userid : "Puppet Labs Release Key (Puppet Labs Release Key) <info@puppetlabs.com>" ==> omv1: Fingerprint: 47b3 20eb 4c7c 375a a9da e1a0 1054 b7a2 4bd6 ec30 ==> omv1: From : /etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs ==> omv1: ==> omv1: Running transaction check ==> omv1: Running transaction test ==> omv1: Transaction test succeeded ==> omv1: Running transaction ==> omv1: Installing : ruby-libs-2.0.0.598-24.el7.x86_64 1/24 ==> omv1: ==> omv1: Installing : 1:dmidecode-2.12-5.el7.x86_64 2/24 ==> omv1: ==> omv1: Installing : virt-what-1.13-5.el7.x86_64 3/24 ==> omv1: ==> omv1: Installing : libyaml-0.1.4-11.el7_0.x86_64 4/24 ==> omv1: ==> omv1: Installing : rubygem-psych-2.0.0-24.el7.x86_64 5/24 ==> omv1: ==> omv1: Installing : rubygem-bigdecimal-1.2.0-24.el7.x86_64 6/24 ==> omv1: ==> omv1: Installing : rubygem-io-console-0.4.2-24.el7.x86_64 7/24 ==> omv1: ==> omv1: Installing : ruby-irb-2.0.0.598-24.el7.noarch 8/24 ==> omv1: ==> omv1: Installing : ruby-2.0.0.598-24.el7.x86_64 9/24 ==> omv1: ==> omv1: Installing : rubygems-2.0.14-24.el7.noarch 10/24 ==> omv1: ==> omv1: Installing : rubygem-json-1.7.7-24.el7.x86_64 11/24 ==> omv1: ==> omv1: Installing : rubygem-rdoc-4.0.0-24.el7.noarch 12/24 ==> omv1: ==> omv1: Installing : hiera-1.3.4-1.el7.noarch 13/24 ==> omv1: ==> omv1: Installing : 1:ruby-shadow-2.2.0-2.el7.x86_64 14/24 ==> omv1: ==> omv1: Installing : hwdata-0.252-7.5.el7.noarch 15/24 ==> omv1: ==> omv1: Installing : libselinux-utils-2.2.2-6.el7.x86_64 16/24 ==> omv1: ==> omv1: Installing : pciutils-libs-3.2.1-4.el7.x86_64 17/24 ==> omv1: ==> omv1: Installing : pciutils-3.2.1-4.el7.x86_64 18/24 ==> omv1: ==> omv1: Installing : augeas-libs-1.1.0-17.el7.x86_64 19/24 ==> omv1: ==> omv1: Installing : ruby-augeas-0.4.1-3.el7.x86_64 20/24 ==> omv1: ==> omv1: Installing : net-tools-2.0-0.17.20131004git.el7.x86_64 21/24 ==> omv1: ==> omv1: Installing : 1:facter-2.4.3-1.el7.x86_64 22/24 ==> omv1: ==> omv1: Installing : libselinux-ruby-2.2.2-6.el7.x86_64 23/24 ==> omv1: ==> omv1: Installing : puppet-3.7.5-1.el7.noarch 24/24 ==> omv1: ==> omv1: Verifying : libselinux-ruby-2.2.2-6.el7.x86_64 1/24 ==> omv1: ==> omv1: Verifying : rubygem-json-1.7.7-24.el7.x86_64 2/24 ==> omv1: ==> omv1: Verifying : ruby-irb-2.0.0.598-24.el7.noarch 3/24 ==> omv1: ==> omv1: Verifying : ruby-libs-2.0.0.598-24.el7.x86_64 4/24 ==> omv1: ==> omv1: Verifying : net-tools-2.0-0.17.20131004git.el7.x86_64 5/24 ==> omv1: ==> omv1: Verifying : augeas-libs-1.1.0-17.el7.x86_64 6/24 ==> omv1: ==> omv1: Verifying : pciutils-libs-3.2.1-4.el7.x86_64 7/24 ==> omv1: ==> omv1: Verifying : rubygem-psych-2.0.0-24.el7.x86_64 8/24 ==> omv1: ==> omv1: Verifying : 1:facter-2.4.3-1.el7.x86_64 9/24 ==> omv1: ==> omv1: Verifying : pciutils-3.2.1-4.el7.x86_64 10/24 ==> omv1: ==> omv1: Verifying : puppet-3.7.5-1.el7.noarch 11/24 ==> omv1: ==> omv1: Verifying : hiera-1.3.4-1.el7.noarch 12/24 ==> omv1: ==> omv1: Verifying : rubygem-rdoc-4.0.0-24.el7.noarch 13/24 ==> omv1: ==> omv1: Verifying : virt-what-1.13-5.el7.x86_64 14/24 ==> omv1: ==> omv1: Verifying : rubygems-2.0.14-24.el7.noarch 15/24 ==> omv1: ==> omv1: Verifying : libselinux-utils-2.2.2-6.el7.x86_64 16/24 ==> omv1: ==> omv1: Verifying : 1:ruby-shadow-2.2.0-2.el7.x86_64 17/24 ==> omv1: ==> omv1: Verifying : rubygem-bigdecimal-1.2.0-24.el7.x86_64 18/24 ==> omv1: ==> omv1: Verifying : 1:dmidecode-2.12-5.el7.x86_64 19/24 ==> omv1: ==> omv1: Verifying : hwdata-0.252-7.5.el7.noarch 20/24 ==> omv1: ==> omv1: Verifying : libyaml-0.1.4-11.el7_0.x86_64 21/24 ==> omv1: ==> omv1: Verifying : rubygem-io-console-0.4.2-24.el7.x86_64 22/24 ==> omv1: ==> omv1: Verifying : ruby-augeas-0.4.1-3.el7.x86_64 23/24 ==> omv1: ==> omv1: Verifying : ruby-2.0.0.598-24.el7.x86_64 24/24 ==> omv1: ==> omv1: ==> omv1: Installed: ==> omv1: puppet.noarch 0:3.7.5-1.el7 ==> omv1: ==> omv1: Dependency Installed: ==> omv1: augeas-libs.x86_64 0:1.1.0-17.el7 ==> omv1: dmidecode.x86_64 1:2.12-5.el7 ==> omv1: facter.x86_64 1:2.4.3-1.el7 ==> omv1: hiera.noarch 0:1.3.4-1.el7 ==> omv1: hwdata.noarch 0:0.252-7.5.el7 ==> omv1: libselinux-ruby.x86_64 0:2.2.2-6.el7 ==> omv1: libselinux-utils.x86_64 0:2.2.2-6.el7 ==> omv1: libyaml.x86_64 0:0.1.4-11.el7_0 ==> omv1: net-tools.x86_64 0:2.0-0.17.20131004git.el7 ==> omv1: pciutils.x86_64 0:3.2.1-4.el7 ==> omv1: pciutils-libs.x86_64 0:3.2.1-4.el7 ==> omv1: ruby.x86_64 0:2.0.0.598-24.el7 ==> omv1: ruby-augeas.x86_64 0:0.4.1-3.el7 ==> omv1: ruby-irb.noarch 0:2.0.0.598-24.el7 ==> omv1: ruby-libs.x86_64 0:2.0.0.598-24.el7 ==> omv1: ruby-shadow.x86_64 1:2.2.0-2.el7 ==> omv1: rubygem-bigdecimal.x86_64 0:1.2.0-24.el7 ==> omv1: rubygem-io-console.x86_64 0:0.4.2-24.el7 ==> omv1: rubygem-json.x86_64 0:1.7.7-24.el7 ==> omv1: rubygem-psych.x86_64 0:2.0.0-24.el7 ==> omv1: rubygem-rdoc.noarch 0:4.0.0-24.el7 ==> omv1: rubygems.noarch 0:2.0.14-24.el7 ==> omv1: virt-what.x86_64 0:1.13-5.el7 ==> omv1: Complete! ==> omv1: ---> bf169104271a ==> omv1: Removing intermediate container e44c9cf55dc5 ==> omv1: Step 6 : RUN yum install -y hostname ==> omv1: ---> Running in 6e5bd5a59223 ==> omv1: Loaded plugins: fastestmirror ==> omv1: Loading mirror speeds from cached hostfile ==> omv1: * base: centos.mirror.vexxhost.com ==> omv1: * extras: mirror.gpmidi.net ==> omv1: * updates: centos.mirror.vexxhost.com ==> omv1: Resolving Dependencies ==> omv1: --> Running transaction check ==> omv1: ---> Package hostname.x86_64 0:3.13-3.el7 will be installed ==> omv1: --> Finished Dependency Resolution ==> omv1: ==> omv1: Dependencies Resolved ==> omv1: ==> omv1: ================================================================================ ==> omv1: Package Arch Version Repository Size ==> omv1: ================================================================================ ==> omv1: Installing: ==> omv1: hostname x86_64 3.13-3.el7 base 17 k ==> omv1: ==> omv1: Transaction Summary ==> omv1: ================================================================================ ==> omv1: Install 1 Package ==> omv1: ==> omv1: Total download size: 17 k ==> omv1: Installed size: 19 k ==> omv1: Downloading packages: ==> omv1: Running transaction check ==> omv1: Running transaction test ==> omv1: Transaction test succeeded ==> omv1: Running transaction ==> omv1: Installing : hostname-3.13-3.el7.x86_64 1/1 ==> omv1: ==> omv1: Verifying : hostname-3.13-3.el7.x86_64 1/1 ==> omv1: ==> omv1: ==> omv1: Installed: ==> omv1: hostname.x86_64 0:3.13-3.el7 ==> omv1: ==> omv1: Complete! ==> omv1: ---> 2a20361f2d9d ==> omv1: Removing intermediate container 6e5bd5a59223 ==> omv1: Step 7 : ADD run.sh / ==> omv1: ---> 5493e62ac377 ==> omv1: Removing intermediate container 84c8b7677f72 ==> omv1: Step 8 : ADD test.pp / ==> omv1: ---> 4f4d0023e612 ==> omv1: Removing intermediate container 84cb691304a3 ==> omv1: Step 9 : ENV FACTER_fqdn localhost ==> omv1: ---> Running in 104fe3925dd6 ==> omv1: ---> 864c113d54b5 ==> omv1: Removing intermediate container 104fe3925dd6 ==> omv1: Step 10 : ENTRYPOINT puppet apply ==> omv1: ---> Running in f6fe26141b19 ==> omv1: ---> cd19e4344bf1 ==> omv1: Removing intermediate container f6fe26141b19 ==> omv1: Step 11 : USER root ==> omv1: ---> Running in 435752b9fb17 ==> omv1: ---> 86193e9815a8 ==> omv1: Removing intermediate container 435752b9fb17 ==> omv1: Step 12 : LABEL INSTALL docker run --rm -it --privileged -v /etc:/etc -v /var:/var -v /run:/run --net=host IMAGE ==> omv1: ---> Running in d24f98a56936 ==> omv1: ---> 72f2dfbc4e07 ==> omv1: Removing intermediate container d24f98a56936 ==> omv1: Successfully built 72f2dfbc4e07 real 2m46.515s user 0m10.036s sys 0m1.678s
Once you’ve built the container, you should confirm its existence:
$ vscreen root@omv1 # docker images | grep spc spc-puppet-apply latest 72f2dfbc4e07 7 minutes ago 314.5 MB
The project repository tries to make your life easier, so it comes with a test.pp file that you can run to confirm puppet is working correctly. If you are using a regular host (not Atomic) you can run:
# mkdir /var/tmp/spc-puppet-apply/ # cp -a /vagrant/docker/spc-puppet-apply/test.pp /var/tmp/spc-puppet-apply/
or if you’re using an Atomic host, you can run:
# mkdir /var/tmp/spc-puppet-apply/ # cp -a /home/vagrant/sync/docker/spc-puppet-apply/test.pp /var/tmp/spc-puppet-apply/
since Oh-My-Vagrant can’t put files in /vagrant on an immutable Atomic host.
Finally, run the application with this monster docker command:
# docker run --rm -it --privileged -v /etc:/etc -v /var:/var -v /run:/run --net=host spc-puppet-apply /var/tmp/spc-puppet-apply/test.pp Notice: Compiled catalog for omv1.example.com in environment production in 0.02 seconds Notice: This is a puppet test! Notice: /Stage[main]/Main/Notify[hello]/message: defined 'message' as 'This is a puppet test!' Notice: Finished catalog run in 0.06 seconds
Since remembering that monster each time you want to do a simple puppet run is a bit of a monster, the Atomic project provides labels which make it so you can use the atomic run command instead.
Future work:
Interested parties are encouraged to test this, find any issues, and become comfortable with the idea of applications running from within containers. If running puppet with a puppet master is desirable, an spc-puppet-agent would be needed.
Happy Hacking,
James
The Technical Blog of James 