Contenedor Docker utilizando Apache Mesos y Marathon

Apache Mesos es un gestor de clústeres de código abierto desarrollado en UC Berkeley. Proporciona aislamiento y compartición de recursos entre aplicaciones distribuidas. La figura muestra los principales componentes de Mesos.

Mesos consta de maestro que gestiona esclavo que se ejecutan en cada nodo del clúster. Marcos Mesos son aplicaciones que se ejecutan en Mesos y ejecutan tareas sobre estos esclavos. Los esclavos son
máquinas físicas o virtuales, normalmente del mismo proveedor.

Mesos utiliza un mecanismo de programación de dos niveles en el que ofertas de recursos a los frameworks. El nodo maestro de Mesos decide cuántos recursos ofrecer a cada framework, mientras que cada framework determina los recursos que acepta y qué aplicación
ejecutar en esos recursos.

Maratón es una plataforma de orquestación de contenedores que se ejecuta en Mesos. Múltiples formatos de contenedores y Docker es compatible con
sin duda, la más común.

Este blog mostrará cómo configurar Mesos, Marathon, y ejecutar una imagen Docker simple. Esta configuración es sólo para los valientes de corazón. Siempre estoy interesado en mirar bajo el capó y eso es lo que motivó este post. Pero un futuro post mostrará una
instalación sin problemas.

Empecemos.

Configurar CentOS VM

Descargar CentOS y configure la máquina virtual como se muestra:

Instalar componentes

Instale los distintos componentes necesarios para esta configuración.

1. Configure el repositorio de Mesos:
   
   [arun@arun-centos ~]$ sudo rpm -Uvh https://repos.mesosphere.com/el/7/noarch/RPMS/mesosphere-el-repo-7-1.noarch.rpm We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. [sudo] password for arun: Retrieving https://repos.mesosphere.com/el/7/noarch/RPMS/mesosphere-el-repo-7-1.noarch.rpm warning: /var/tmp/rpm-tmp.9ssCDQ: Header V4 RSA/SHA1 Signature, key ID e56151bf: NOKEY Preparing... ################################# [100%] Updating / installing... 1:mesosphere-el-repo-7-1 ################################# [100%]

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   [arun@arun-centos ~]$ sudo rpm -Uvh https://repos.mesosphere.com/el/7/noarch/RPMS/mesosphere-el-repo-7-1.noarch.rpm   We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things:       #1) Respect the privacy of others.     #2) Think before you type.     #3) With great power comes great responsibility.   [sudo] password for arun: Retrieving https://repos.mesosphere.com/el/7/noarch/RPMS/mesosphere-el-repo-7-1.noarch.rpm warning: /var/tmp/rpm-tmp.9ssCDQ: Header V4 RSA/SHA1 Signature, key ID e56151bf: NOKEY Preparing...                          ################################# [100%] Updating / installing...    1:mesosphere-el-repo-7-1           ################################# [100%]

2. Instale Mesos y Marathon:
   
   [arun@arun-centos ~]$ sudo yum -y install mesos marathon Loaded plugins: fastestmirror, langpacks base | 3.6 kB 00:00 extras | 3.4 kB 00:00 mesosphere | 2.9 kB 00:00 mesosphere-noarch | 2.9 kB 00:00 updates | 3.4 kB 00:00 (1/6): base/7/x86_64/group_gz | 155 kB 00:00 (2/6): extras/7/x86_64/primary_db | 117 kB 00:00 (3/6): mesosphere-noarch/primary_db | 2.5 kB 00:00 (4/6): mesosphere/x86_64/primary_db | 27 kB 00:00 (5/6): base/7/x86_64/primary_db | 5.3 MB 00:01 (6/6): updates/7/x86_64/primary_db | 4.1 MB 00:02 Determining fastest mirrors * base: mirror.supremebytes.com * extras: centos.den.host-engine.com * updates: mirror.hmc.edu Resolving Dependencies --> Running transaction check ---> Package marathon.x86_64 0:1.1.1-1.0.472.el7 will be installed ---> Package mesos.x86_64 0:0.28.1-2.0.20.centos701406 will be installed --> Processing Dependency: subversion for package: mesos-0.28.1-2.0.20.centos701406.x86_64 --> Running transaction check ---> Package subversion.x86_64 0:1.7.14-10.el7 will be installed --> Processing Dependency: subversion-libs(x86-64) = 1.7.14-10.el7 for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_wc-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_subr-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_repos-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra_svn-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra_neon-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra_local-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs_util-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs_fs-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs_base-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_diff-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_delta-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_client-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libaprutil-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libapr-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Running transaction check ---> Package apr.x86_64 0:1.4.8-3.el7 will be installed ---> Package apr-util.x86_64 0:1.5.2-6.el7 will be installed ---> Package subversion-libs.x86_64 0:1.7.14-10.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: marathon x86_64 1.1.1-1.0.472.el7 mesosphere 64 M mesos x86_64 0.28.1-2.0.20.centos701406 mesosphere 30 M Installing for dependencies: apr x86_64 1.4.8-3.el7 base 103 k apr-util x86_64 1.5.2-6.el7 base 92 k subversion x86_64 1.7.14-10.el7 base 1.0 M subversion-libs x86_64 1.7.14-10.el7 base 921 k Transaction Summary ================================================================================ Install 2 Packages (+4 Dependent packages) Total download size: 96 M Installed size: 168 M Downloading packages: warning: /var/cache/yum/x86_64/7/base/packages/apr-1.4.8-3.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY Public key for apr-1.4.8-3.el7.x86_64.rpm is not installed (1/6): apr-1.4.8-3.el7.x86_64.rpm | 103 kB 00:00 (2/6): apr-util-1.5.2-6.el7.x86_64.rpm | 92 kB 00:00 (3/6): subversion-1.7.14-10.el7.x86_64.rpm | 1.0 MB 00:00 (4/6): subversion-libs-1.7.14-10.el7.x86_64.rpm | 921 kB 00:00 warning: /var/cache/yum/x86_64/7/mesosphere/packages/mesos-0.28.1-2.0.20.centos701406.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID e56151bf: NOKEY Public key for mesos-0.28.1-2.0.20.centos701406.x86_64.rpm is not installed (5/6): mesos-0.28.1-2.0.20.centos701406.x86_64.rpm | 30 MB 00:29 (6/6): marathon-1.1.1-1.0.472.el7.x86_64.rpm | 64 MB 00:36 -------------------------------------------------------------------------------- Total 2.6 MB/s | 96 MB 00:36 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Importing GPG key 0xF4A80EB5: Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 Package : centos-release-7-2.1511.el7.centos.2.10.x86_64 (@anaconda) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mesosphere Importing GPG key 0xE56151BF: Userid : "Mesosphere Archive Automatic Signing Key <support@mesosphere.io>" Fingerprint: 8102 6d00 04c4 4cf7 ef55 adf8 df7d 54cb e561 51bf Package : mesosphere-el-repo-7-1.noarch (installed) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-mesosphere Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : apr-1.4.8-3.el7.x86_64 1/6 Installing : apr-util-1.5.2-6.el7.x86_64 2/6 Installing : subversion-libs-1.7.14-10.el7.x86_64 3/6 Installing : subversion-1.7.14-10.el7.x86_64 4/6 Installing : mesos-0.28.1-2.0.20.centos701406.x86_64 5/6 Created symlink from /etc/systemd/system/multi-user.target.wants/mesos-master.service to /usr/lib/systemd/system/mesos-master.service. Created symlink from /etc/systemd/system/multi-user.target.wants/mesos-slave.service to /usr/lib/systemd/system/mesos-slave.service. Installing : marathon-1.1.1-1.0.472.el7.x86_64 6/6 Created symlink from /etc/systemd/system/multi-user.target.wants/marathon.service to /usr/lib/systemd/system/marathon.service. Verifying : apr-1.4.8-3.el7.x86_64 1/6 Verifying : subversion-1.7.14-10.el7.x86_64 2/6 Verifying : apr-util-1.5.2-6.el7.x86_64 3/6 Verifying : mesos-0.28.1-2.0.20.centos701406.x86_64 4/6 Verifying : marathon-1.1.1-1.0.472.el7.x86_64 5/6 Verifying : subversion-libs-1.7.14-10.el7.x86_64 6/6 Installed: marathon.x86_64 0:1.1.1-1.0.472.el7 mesos.x86_64 0:0.28.1-2.0.20.centos701406 Dependency Installed: apr.x86_64 0:1.4.8-3.el7 apr-util.x86_64 0:1.5.2-6.el7 subversion.x86_64 0:1.7.14-10.el7 subversion-libs.x86_64 0:1.7.14-10.el7 Complete!

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   [arun@arun-centos ~]$ sudo yum -y install mesos marathon Loaded plugins: fastestmirror, langpacks base                                                     | 3.6 kB     00:00 extras                                                   | 3.4 kB     00:00 mesosphere                                               | 2.9 kB     00:00 mesosphere-noarch                                        | 2.9 kB     00:00 updates                                                  | 3.4 kB     00:00 (1/6): base/7/x86_64/group_gz                              | 155 kB   00:00 (2/6): extras/7/x86_64/primary_db                          | 117 kB   00:00 (3/6): mesosphere-noarch/primary_db                        | 2.5 kB   00:00 (4/6): mesosphere/x86_64/primary_db                        |  27 kB   00:00 (5/6): base/7/x86_64/primary_db                            | 5.3 MB   00:01 (6/6): updates/7/x86_64/primary_db                         | 4.1 MB   00:02 Determining fastest mirrors * base: mirror.supremebytes.com * extras: centos.den.host-engine.com * updates: mirror.hmc.edu Resolving Dependencies --> Running transaction check ---> Package marathon.x86_64 0:1.1.1-1.0.472.el7 will be installed ---> Package mesos.x86_64 0:0.28.1-2.0.20.centos701406 will be installed --> Processing Dependency: subversion for package: mesos-0.28.1-2.0.20.centos701406.x86_64 --> Running transaction check ---> Package subversion.x86_64 0:1.7.14-10.el7 will be installed --> Processing Dependency: subversion-libs(x86-64) = 1.7.14-10.el7 for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_wc-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_subr-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_repos-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra_svn-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra_neon-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra_local-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_ra-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs_util-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs_fs-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs_base-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_fs-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_diff-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_delta-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libsvn_client-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libaprutil-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Processing Dependency: libapr-1.so.0()(64bit) for package: subversion-1.7.14-10.el7.x86_64 --> Running transaction check ---> Package apr.x86_64 0:1.4.8-3.el7 will be installed ---> Package apr-util.x86_64 0:1.5.2-6.el7 will be installed ---> Package subversion-libs.x86_64 0:1.7.14-10.el7 will be installed --> Finished Dependency Resolution   Dependencies Resolved   ================================================================================ Package            Arch      Version                       Repository     Size ================================================================================ Installing: marathon           x86_64    1.1.1-1.0.472.el7             mesosphere     64 M mesos              x86_64    0.28.1-2.0.20.centos701406    mesosphere     30 M Installing for dependencies: apr                x86_64    1.4.8-3.el7                   base          103 k apr-util           x86_64    1.5.2-6.el7                   base           92 k subversion         x86_64    1.7.14-10.el7                 base          1.0 M subversion-libs    x86_64    1.7.14-10.el7                 base          921 k   Transaction Summary ================================================================================ Install  2 Packages (+4 Dependent packages)   Total download size: 96 M Installed size: 168 M Downloading packages: warning: /var/cache/yum/x86_64/7/base/packages/apr-1.4.8-3.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY Public key for apr-1.4.8-3.el7.x86_64.rpm is not installed (1/6): apr-1.4.8-3.el7.x86_64.rpm                          | 103 kB   00:00 (2/6): apr-util-1.5.2-6.el7.x86_64.rpm                     |  92 kB   00:00 (3/6): subversion-1.7.14-10.el7.x86_64.rpm                 | 1.0 MB   00:00 (4/6): subversion-libs-1.7.14-10.el7.x86_64.rpm            | 921 kB   00:00 warning: /var/cache/yum/x86_64/7/mesosphere/packages/mesos-0.28.1-2.0.20.centos701406.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID e56151bf: NOKEY Public key for mesos-0.28.1-2.0.20.centos701406.x86_64.rpm is not installed (5/6): mesos-0.28.1-2.0.20.centos701406.x86_64.rpm         |  30 MB   00:29 (6/6): marathon-1.1.1-1.0.472.el7.x86_64.rpm               |  64 MB   00:36 -------------------------------------------------------------------------------- Total                                              2.6 MB/s |  96 MB  00:36 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Importing GPG key 0xF4A80EB5: Userid     : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 Package    : centos-release-7-2.1511.el7.centos.2.10.x86_64 (@anaconda) From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mesosphere Importing GPG key 0xE56151BF: Userid     : "Mesosphere Archive Automatic Signing Key <support@mesosphere.io>" Fingerprint: 8102 6d00 04c4 4cf7 ef55 adf8 df7d 54cb e561 51bf Package    : mesosphere-el-repo-7-1.noarch (installed) From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-mesosphere Running transaction check Running transaction test Transaction test succeeded Running transaction   Installing : apr-1.4.8-3.el7.x86_64                                       1/6   Installing : apr-util-1.5.2-6.el7.x86_64                                  2/6   Installing : subversion-libs-1.7.14-10.el7.x86_64                         3/6   Installing : subversion-1.7.14-10.el7.x86_64                              4/6   Installing : mesos-0.28.1-2.0.20.centos701406.x86_64                      5/6 Created symlink from /etc/systemd/system/multi-user.target.wants/mesos-master.service to /usr/lib/systemd/system/mesos-master.service. Created symlink from /etc/systemd/system/multi-user.target.wants/mesos-slave.service to /usr/lib/systemd/system/mesos-slave.service.   Installing : marathon-1.1.1-1.0.472.el7.x86_64                            6/6 Created symlink from /etc/systemd/system/multi-user.target.wants/marathon.service to /usr/lib/systemd/system/marathon.service.   Verifying  : apr-1.4.8-3.el7.x86_64                                       1/6   Verifying  : subversion-1.7.14-10.el7.x86_64                              2/6   Verifying  : apr-util-1.5.2-6.el7.x86_64                                  3/6   Verifying  : mesos-0.28.1-2.0.20.centos701406.x86_64                      4/6   Verifying  : marathon-1.1.1-1.0.472.el7.x86_64                            5/6   Verifying  : subversion-libs-1.7.14-10.el7.x86_64                         6/6   Installed:   marathon.x86_64 0:1.1.1-1.0.472.el7 mesos.x86_64 0:0.28.1-2.0.20.centos701406   Dependency Installed:   apr.x86_64 0:1.4.8-3.el7             apr-util.x86_64 0:1.5.2-6.el7   subversion.x86_64 0:1.7.14-10.el7    subversion-libs.x86_64 0:1.7.14-10.el7   Complete!

3. Instala ZooKeeper:
   
   [arun@arun-centos ~]$ sudo yum -y install mesosphere-zookeeper [sudo] password for arun: Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirror.supremebytes.com * extras: centos.den.host-engine.com * updates: mirror.hmc.edu Resolving Dependencies --> Running transaction check ---> Package mesosphere-zookeeper.x86_64 0:3.4.6-0.1.20141204175332.centos7 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================================== Package Arch Version Repository Size ================================================================================================== Installing: mesosphere-zookeeper x86_64 3.4.6-0.1.20141204175332.centos7 mesosphere 2.8 M Transaction Summary ================================================================================================== Install 1 Package Total download size: 2.8 M Installed size: 3.5 M Downloading packages: mesosphere-zookeeper-3.4.6-0.1.20141204175332.centos7.x86_64.rpm | 2.8 MB 00:00:01 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : mesosphere-zookeeper-3.4.6-0.1.20141204175332.centos7.x86_64 1/1 Created symlink from /etc/systemd/system/multi-user.target.wants/zookeeper.service to /usr/lib/systemd/system/zookeeper.service. Verifying : mesosphere-zookeeper-3.4.6-0.1.20141204175332.centos7.x86_64 1/1 Installed: mesosphere-zookeeper.x86_64 0:3.4.6-0.1.20141204175332.centos7 Complete!

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   [arun@arun-centos ~]$ sudo yum -y install mesosphere-zookeeper [sudo] password for arun: Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirror.supremebytes.com * extras: centos.den.host-engine.com * updates: mirror.hmc.edu Resolving Dependencies --> Running transaction check ---> Package mesosphere-zookeeper.x86_64 0:3.4.6-0.1.20141204175332.centos7 will be installed --> Finished Dependency Resolution   Dependencies Resolved   ================================================================================================== Package                  Arch       Version                                 Repository      Size ================================================================================================== Installing: mesosphere-zookeeper     x86_64     3.4.6-0.1.20141204175332.centos7        mesosphere     2.8 M   Transaction Summary ================================================================================================== Install  1 Package   Total download size: 2.8 M Installed size: 3.5 M Downloading packages: mesosphere-zookeeper-3.4.6-0.1.20141204175332.centos7.x86_64.rpm           | 2.8 MB  00:00:01 Running transaction check Running transaction test Transaction test succeeded Running transaction   Installing : mesosphere-zookeeper-3.4.6-0.1.20141204175332.centos7.x86_64                   1/1 Created symlink from /etc/systemd/system/multi-user.target.wants/zookeeper.service to /usr/lib/systemd/system/zookeeper.service.   Verifying  : mesosphere-zookeeper-3.4.6-0.1.20141204175332.centos7.x86_64                   1/1   Installed:   mesosphere-zookeeper.x86_64 0:3.4.6-0.1.20141204175332.centos7   Complete!

4. Añadir repositorio Docker:
   
   [arun@arun-centos ~]$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF' [dockerrepo] name=Docker Repository baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/ enabled=1 gpgcheck=1 gpgkey=https://yum.dockerproject.org/gpg EOF [sudo] password for arun: [dockerrepo] name=Docker Repository baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/ enabled=1 gpgcheck=1 gpgkey=https://yum.dockerproject.org/gpg

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   [arun@arun-centos ~]$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF' [dockerrepo] name=Docker Repository baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/ enabled=1 gpgcheck=1 gpgkey=https://yum.dockerproject.org/gpg EOF [sudo] password for arun: [dockerrepo] name=Docker Repository baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/ enabled=1 gpgcheck=1 gpgkey=https://yum.dockerproject.org/gpg

5. Instala Docker:
   
   [arun@localhost ~]$ sudo yum -y install docker-engine Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirror.scalabledns.com * extras: linux.mirrors.es.net * updates: mirrors.adams.net Resolving Dependencies --> Running transaction check ---> Package docker-engine.x86_64 0:1.11.1-1.el7.centos will be installed --> Processing Dependency: docker-engine-selinux >= 1.11.1-1.el7.centos for package: docker-engine-1.11.1-1.el7.centos.x86_64 --> Running transaction check ---> Package docker-engine-selinux.noarch 0:1.11.1-1.el7.centos will be installed --> Finished Dependency Resolution Dependencies Resolved ==================================================================================================== Package Arch Version Repository Size ==================================================================================================== Installing: docker-engine x86_64 1.11.1-1.el7.centos dockerrepo 13 M Installing for dependencies: docker-engine-selinux noarch 1.11.1-1.el7.centos dockerrepo 28 k Transaction Summary ==================================================================================================== Install 1 Package (+1 Dependent package) Total download size: 13 M Installed size: 54 M Downloading packages: warning: /var/cache/yum/x86_64/7/dockerrepo/packages/docker-engine-selinux-1.11.1-1.el7.centos.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 2c52609d: NOKEY Public key for docker-engine-selinux-1.11.1-1.el7.centos.noarch.rpm is not installed (1/2): docker-engine-selinux-1.11.1-1.el7.centos.noarch.rpm | 28 kB 00:00:00 (2/2): docker-engine-1.11.1-1.el7.centos.x86_64.rpm | 13 MB 00:00:02 ---------------------------------------------------------------------------------------------------- Total 5.3 MB/s | 13 MB 00:00:02 Retrieving key from https://yum.dockerproject.org/gpg Importing GPG key 0x2C52609D: Userid : "Docker Release Tool (releasedocker) <docker@docker.com>" Fingerprint: 5811 8e89 f3a9 1289 7c07 0adb f762 2157 2c52 609d From : https://yum.dockerproject.org/gpg Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : docker-engine-selinux-1.11.1-1.el7.centos.noarch 1/2 restorecon: lstat(/var/lib/docker) failed: No such file or directory warning: %post(docker-engine-selinux-1.11.1-1.el7.centos.noarch) scriptlet failed, exit status 255 Non-fatal POSTIN scriptlet failure in rpm package docker-engine-selinux-1.11.1-1.el7.centos.noarch Installing : docker-engine-1.11.1-1.el7.centos.x86_64 2/2 Verifying : docker-engine-1.11.1-1.el7.centos.x86_64 1/2 Verifying : docker-engine-selinux-1.11.1-1.el7.centos.noarch 2/2 Installed: docker-engine.x86_64 0:1.11.1-1.el7.centos Dependency Installed: docker-engine-selinux.noarch 0:1.11.1-1.el7.centos Complete!

   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

   [arun@localhost ~]$ sudo yum -y install docker-engine Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirror.scalabledns.com * extras: linux.mirrors.es.net * updates: mirrors.adams.net Resolving Dependencies --> Running transaction check ---> Package docker-engine.x86_64 0:1.11.1-1.el7.centos will be installed --> Processing Dependency: docker-engine-selinux >= 1.11.1-1.el7.centos for package: docker-engine-1.11.1-1.el7.centos.x86_64 --> Running transaction check ---> Package docker-engine-selinux.noarch 0:1.11.1-1.el7.centos will be installed --> Finished Dependency Resolution   Dependencies Resolved   ==================================================================================================== Package                       Arch           Version                      Repository          Size ==================================================================================================== Installing: docker-engine                 x86_64         1.11.1-1.el7.centos          dockerrepo          13 M Installing for dependencies: docker-engine-selinux         noarch         1.11.1-1.el7.centos          dockerrepo          28 k   Transaction Summary ==================================================================================================== Install  1 Package (+1 Dependent package)   Total download size: 13 M Installed size: 54 M Downloading packages: warning: /var/cache/yum/x86_64/7/dockerrepo/packages/docker-engine-selinux-1.11.1-1.el7.centos.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 2c52609d: NOKEY Public key for docker-engine-selinux-1.11.1-1.el7.centos.noarch.rpm is not installed (1/2): docker-engine-selinux-1.11.1-1.el7.centos.noarch.rpm                  |  28 kB  00:00:00 (2/2): docker-engine-1.11.1-1.el7.centos.x86_64.rpm                          |  13 MB  00:00:02 ---------------------------------------------------------------------------------------------------- Total                                                               5.3 MB/s |  13 MB  00:00:02 Retrieving key from https://yum.dockerproject.org/gpg Importing GPG key 0x2C52609D: Userid     : "Docker Release Tool (releasedocker) <docker@docker.com>" Fingerprint: 5811 8e89 f3a9 1289 7c07 0adb f762 2157 2c52 609d From       : https://yum.dockerproject.org/gpg Running transaction check Running transaction test Transaction test succeeded Running transaction   Installing : docker-engine-selinux-1.11.1-1.el7.centos.noarch                                 1/2 restorecon:  lstat(/var/lib/docker) failed:  No such file or directory warning: %post(docker-engine-selinux-1.11.1-1.el7.centos.noarch) scriptlet failed, exit status 255 Non-fatal POSTIN scriptlet failure in rpm package docker-engine-selinux-1.11.1-1.el7.centos.noarch   Installing : docker-engine-1.11.1-1.el7.centos.x86_64                                         2/2   Verifying  : docker-engine-1.11.1-1.el7.centos.x86_64                                         1/2   Verifying  : docker-engine-selinux-1.11.1-1.el7.centos.noarch                                 2/2   Installed:   docker-engine.x86_64 0:1.11.1-1.el7.centos   Dependency Installed:   docker-engine-selinux.noarch 0:1.11.1-1.el7.centos   Complete!

Configurar la asignación de nombre de host/dirección IP

Editar /etc/hosts y cree una correspondencia entre el nombre de host y la dirección IP. Encuentre la dirección IP usando ifconfig y elija la interfaz de red activada durante la instalación de CentOS.

Iniciar Servicios

Iniciar todos los servicios

1. Inicie Docker:
   
   [arun@arun-centos ~]$ sudo service docker start Redirecting to /bin/systemctl start docker.service

   1 2	[arun@arun-centos ~]$ sudo service docker start Redirecting to /bin/systemctl start  docker.service

2. Inicia ZooKeeper:
   
   sudo systemctl start zookeeper

   1	sudo systemctl start zookeeper

3. Iniciar maestro Mesos:
   
   [arun@arun-centos ~]$ sudo service mesos-master start Redirecting to /bin/systemctl start mesos-master.service

   1 2	[arun@arun-centos ~]$ sudo service mesos-master start Redirecting to /bin/systemctl start  mesos-master.service

4. Configure mesos y docker contenedores:
   
   sudo sh -c "echo 'docker,mesos' > /etc/mesos-slave/containerizers"

   1	sudo sh -c "echo 'docker,mesos' > /etc/mesos-slave/containerizers"

5. Inicie el esclavo Mesos:
   
   [arun@arun-centos ~]$ sudo service mesos-slave start Redirecting to /bin/systemctl start mesos-slave.service

   1 2	[arun@arun-centos ~]$ sudo service mesos-slave start Redirecting to /bin/systemctl start  mesos-slave.service

6. Maratón de salida:
   
   [arun@arun-centos ~]$ sudo service marathon start Redirecting to /bin/systemctl start marathon.service

   1 2	[arun@arun-centos ~]$ sudo service marathon start Redirecting to /bin/systemctl start  marathon.service

7. Buscar servicios:Mesos UI: https://127.0.0.1:5050 Marathon UI: https://127.0.0.1:8080 Registros: tail -f /var/log/messages
   
   [arun@arun-centos log]$ ps aux | grep meso root 4511 0.1 0.7 3974136 58968 ? Ssl 19:54 0:04 java -Dzookeeper.log.dir=. -Dzookeeper.root.logger=INFO,CONSOLE -cp /opt/mesosphere/zookeeper/bin/../build/classes:/opt/mesosphere/zookeeper/bin/../build/lib/*.jar:/opt/mesosphere/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/opt/mesosphere/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/opt/mesosphere/zookeeper/bin/../lib/netty-3.7.0.Final.jar:/opt/mesosphere/zookeeper/bin/../lib/log4j-1.2.16.jar:/opt/mesosphere/zookeeper/bin/../lib/jline-0.9.94.jar:/opt/mesosphere/zookeeper/bin/../zookeeper-3.4.6.jar:/opt/mesosphere/zookeeper/bin/../src/java/lib/*.jar:/etc/zookeeper/conf: -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=false org.apache.zookeeper.server.quorum.QuorumPeerMain /etc/zookeeper/conf/zoo.cfg root 15786 0.0 0.2 754788 19596 ? Ssl 20:43 0:00 /usr/sbin/mesos-slave --master=zk://localhost:2181/mesos --log_dir=/var/log/mesos root 15792 0.0 0.0 107892 624 ? S 20:43 0:00 logger -p user.info -t mesos-slave[15786] root 15793 0.0 0.0 107892 700 ? S 20:43 0:00 logger -p user.err -t mesos-slave[15786] root 15837 1.9 3.0 2818056 239208 ? Ssl 20:43 0:10 java -Djava.library.path=/usr/local/lib:/usr/lib:/usr/lib64 -Djava.util.logging.SimpleFormatter.format=%2$s%5$s%6$s%n -Xmx512m -cp /usr/bin/marathon mesosphere.marathon.Main --zk zk://localhost:2181/marathon --master zk://localhost:2181/mesos root 15838 0.0 0.2 829028 22908 ? Ssl 20:43 0:00 /usr/sbin/mesos-master --zk=zk://localhost:2181/mesos --port=5050 --log_dir=/var/log/mesos --quorum=1 --work_dir=/var/lib/mesos root 15863 0.0 0.0 107892 620 ? S 20:43 0:00 logger -p user.info -t mesos-master[15838] root 15864 0.0 0.0 107892 696 ? S 20:43 0:00 logger -p user.err -t mesos-master[15838] arun 16931 0.0 0.0 112644 952 pts/0 R+ 20:52 0:00 grep --color=auto meso

   1 2 3 4 5 6 7 8 9 10

   [arun@arun-centos log]$ ps aux | grep meso root      4511  0.1  0.7 3974136 58968 ?       Ssl  19:54   0:04 java -Dzookeeper.log.dir=. -Dzookeeper.root.logger=INFO,CONSOLE -cp /opt/mesosphere/zookeeper/bin/../build/classes:/opt/mesosphere/zookeeper/bin/../build/lib/*.jar:/opt/mesosphere/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/opt/mesosphere/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/opt/mesosphere/zookeeper/bin/../lib/netty-3.7.0.Final.jar:/opt/mesosphere/zookeeper/bin/../lib/log4j-1.2.16.jar:/opt/mesosphere/zookeeper/bin/../lib/jline-0.9.94.jar:/opt/mesosphere/zookeeper/bin/../zookeeper-3.4.6.jar:/opt/mesosphere/zookeeper/bin/../src/java/lib/*.jar:/etc/zookeeper/conf: -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=false org.apache.zookeeper.server.quorum.QuorumPeerMain /etc/zookeeper/conf/zoo.cfg root     15786  0.0  0.2 754788 19596 ?        Ssl  20:43   0:00 /usr/sbin/mesos-slave --master=zk://localhost:2181/mesos --log_dir=/var/log/mesos root     15792  0.0  0.0 107892   624 ?        S    20:43   0:00 logger -p user.info -t mesos-slave[15786] root     15793  0.0  0.0 107892   700 ?        S    20:43   0:00 logger -p user.err -t mesos-slave[15786] root     15837  1.9  3.0 2818056 239208 ?      Ssl  20:43   0:10 java -Djava.library.path=/usr/local/lib:/usr/lib:/usr/lib64 -Djava.util.logging.SimpleFormatter.format=%2$s%5$s%6$s%n -Xmx512m -cp /usr/bin/marathon mesosphere.marathon.Main --zk zk://localhost:2181/marathon --master zk://localhost:2181/mesos root     15838  0.0  0.2 829028 22908 ?        Ssl  20:43   0:00 /usr/sbin/mesos-master --zk=zk://localhost:2181/mesos --port=5050 --log_dir=/var/log/mesos --quorum=1 --work_dir=/var/lib/mesos root     15863  0.0  0.0 107892   620 ?        S    20:43   0:00 logger -p user.info -t mesos-master[15838] root     15864  0.0  0.0 107892   696 ?        S    20:43   0:00 logger -p user.err -t mesos-master[15838] arun     16931  0.0  0.0 112644   952 pts/0    R+   20:52   0:00 grep --color=auto meso

8. Comprueba el maestro Mesos:
   
   [arun@arun-centos ~]$ systemctl status mesos-master ● mesos-master.service - Mesos Master Loaded: loaded (/usr/lib/systemd/system/mesos-master.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2016-05-04 19:42:24 EDT; 32min ago Main PID: 8499 (mesos-master) Memory: 14.6M CGroup: /system.slice/mesos-master.service ├─8499 /usr/sbin/mesos-master --zk=zk://localhost:2181/mesos --port=5050 --log_dir=/va... ├─8513 logger -p user.info -t mesos-master[8499] └─8514 logger -p user.err -t mesos-master[8499] May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.564679 8527 master.cpp:3104] Proc... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.565058 8527 master.hpp:177] Ad...os) May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.565093 8527 master.cpp:3589] Laun... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.577255 8527 master.cpp:4763] Stat... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.577287 8527 master.cpp:4811] F...000 May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.577325 8527 master.cpp:6421] U...ED) May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.587143 8527 master.cpp:3918] Proc... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.587198 8527 master.cpp:6487] Remo... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.726095 8527 master.cpp:5324] S...006 May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.728080 8527 master.cpp:3641] P...006 Hint: Some lines were ellipsized, use -l to show in full.

   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

   [arun@arun-centos ~]$ systemctl status mesos-master ● mesos-master.service - Mesos Master    Loaded: loaded (/usr/lib/systemd/system/mesos-master.service; enabled; vendor preset: disabled)    Active: active (running) since Wed 2016-05-04 19:42:24 EDT; 32min ago Main PID: 8499 (mesos-master)    Memory: 14.6M    CGroup: /system.slice/mesos-master.service            ├─8499 /usr/sbin/mesos-master --zk=zk://localhost:2181/mesos --port=5050 --log_dir=/va...            ├─8513 logger -p user.info -t mesos-master[8499]            └─8514 logger -p user.err -t mesos-master[8499]   May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.564679  8527 master.cpp:3104] Proc... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.565058  8527 master.hpp:177] Ad...os) May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.565093  8527 master.cpp:3589] Laun... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.577255  8527 master.cpp:4763] Stat... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.577287  8527 master.cpp:4811] F...000 May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.577325  8527 master.cpp:6421] U...ED) May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.587143  8527 master.cpp:3918] Proc... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.587198  8527 master.cpp:6487] Remo... May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.726095  8527 master.cpp:5324] S...006 May 04 20:14:41 arun-centos mesos-master[8514]: I0504 20:14:41.728080  8527 master.cpp:3641] P...006 Hint: Some lines were ellipsized, use -l to show in full.

9. Comprueba el esclavo Mesos:
   
   [arun@arun-centos ~]$ systemctl status mesos-slave ● mesos-slave.service - Mesos Slave Loaded: loaded (/usr/lib/systemd/system/mesos-slave.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2016-05-04 20:00:43 EDT; 12min ago Main PID: 9864 (mesos-slave) Memory: 57.5M CGroup: /system.slice/mesos-slave.service ├─9864 /usr/sbin/mesos-slave --master=zk://localhost:2181/mesos --log_dir=/var/log/mes... ├─9876 logger -p user.info -t mesos-slave[9864] └─9877 logger -p user.err -t mesos-slave[9864] May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.283629 9887 status_update_manag...000 May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289118 9887 slave.cpp:3990] Cle...000 May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289422 9887 slave.cpp:4078] Cle...000 May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289459 9887 gc.cpp:55] Scheduling ... May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289489 9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289499 9887 gc.cpp:55] Scheduling ... May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289511 9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289520 9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289525 9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289533 9887 status_update_manag...000 Hint: Some lines were ellipsized, use -l to show in full.

   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

   [arun@arun-centos ~]$ systemctl status mesos-slave ● mesos-slave.service - Mesos Slave    Loaded: loaded (/usr/lib/systemd/system/mesos-slave.service; enabled; vendor preset: disabled)    Active: active (running) since Wed 2016-05-04 20:00:43 EDT; 12min ago Main PID: 9864 (mesos-slave)    Memory: 57.5M    CGroup: /system.slice/mesos-slave.service            ├─9864 /usr/sbin/mesos-slave --master=zk://localhost:2181/mesos --log_dir=/var/log/mes...            ├─9876 logger -p user.info -t mesos-slave[9864]            └─9877 logger -p user.err -t mesos-slave[9864]   May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.283629  9887 status_update_manag...000 May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289118  9887 slave.cpp:3990] Cle...000 May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289422  9887 slave.cpp:4078] Cle...000 May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289459  9887 gc.cpp:55] Scheduling ... May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289489  9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289499  9887 gc.cpp:55] Scheduling ... May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289511  9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289520  9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289525  9887 gc.cpp:55] Scheduli...ure May 04 20:13:26 arun-centos mesos-slave[9877]: I0504 20:13:26.289533  9887 status_update_manag...000 Hint: Some lines were ellipsized, use -l to show in full.

10. Comprueba ZooKeeper:
    
    [arun@arun-centos log]$ /opt/mesosphere/zookeeper/bin/zkCli.sh Connecting to localhost:2181 log4j:WARN No appenders could be found for logger (org.apache.zookeeper.ZooKeeper). log4j:WARN Please initialize the log4j system properly. log4j:WARN See https://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. Welcome to ZooKeeper! JLine support is enabled WATCHER:: WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0] ls /mesos [json.info_0000000001, log_replicas]

    1 2 3 4 5 6 7 8 9 10 11 12 13

    [arun@arun-centos log]$ /opt/mesosphere/zookeeper/bin/zkCli.sh Connecting to localhost:2181 log4j:WARN No appenders could be found for logger (org.apache.zookeeper.ZooKeeper). log4j:WARN Please initialize the log4j system properly. log4j:WARN See https://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. Welcome to ZooKeeper! JLine support is enabled   WATCHER::   WatchedEvent state:SyncConnected type:None path:null [zk: localhost:2181(CONNECTED) 0] ls /mesos [json.info_0000000001, log_replicas]

Despliegue de aplicaciones Docker en Mesos

A aplicación sencilla basada en Docker se define mediante el archivo de configuración. Maratón se ejecuta en el puerto 8080 y por lo tanto la configuración actualizada
tiene el siguiente aspecto:

Despliega la aplicación como:

La aplicación tardará algún tiempo en descargar la imagen y luego ejecutar el contenedor. Esta configuración es ligeramente sensible y múltiples ejecuciones de la aplicación mostraron que la imagen Docker no se descargó correctamente todas las veces.
En ese caso, la imagen Docker se descargó manualmente utilizando docker pull python:3 y entonces la aplicación podría desplegarse con éxito.

En nuestro caso, maestro y esclavo se están ejecutando en la misma máquina, por lo que la lista de imágenes Docker y contenedores en ejecución se puede ver fácilmente:

La aplicación está disponible en el puerto 31669 y puede verse en https://127.0.0.1:31669 como:

Interfaz de usuario de Mesos (https://127.0.0.1:5050):

Marathon UI (https://127.0.0.1:8080):

En
Como puede ver, se trata de una configuración bastante complicada. En una futura entrada del blog se mostrará cómo utilizar DC/OS y configurar esto de forma más fluida.

Lecturas complementarias ...

• Maratón de Mesos
• Puertos en Mesos
• Mesos CLI
• Mesos - Bajo el capó

Canal Slack de Mesos ¡es impresionante! Particularmente aprendí mucho sobre Mesos de @jgarcia.mesosphere, @akaplan.mesosphere, @harpreet.mesosphere, @graham.mesosphere. Gracias chicos, ¡seguid colaborando con la comunidad!

¡Que aproveche!