{"id":516919,"date":"2018-12-03T16:41:09","date_gmt":"2018-12-03T15:41:09","guid":{"rendered":"https:\/\/www.devoteam.com\/expert-view\/using-ansible-tower-to-deploy-openshift-on-azure-episode-5\/"},"modified":"2018-12-03T16:41:09","modified_gmt":"2018-12-03T15:41:09","slug":"using-ansible-tower-to-deploy-openshift-on-azure-episode-5","status":"publish","type":"expert-view","link":"https:\/\/devoteam.info\/cz\/expert-view\/using-ansible-tower-to-deploy-openshift-on-azure-episode-5\/","title":{"rendered":"Using Ansible Tower to deploy OpenShift on Azure: episode 5"},"content":{"rendered":"

OpenShift command-line: automate tasks & install the MariaDb application<\/b><\/h2>\n

OpenShift has a great GUI, but if you want to automate tasks on it via Ansible the command-line is the way to move forward. In the fifth episode of our blog series<\/a>, we will show you how to install MariaDb on OpenShift via this interface.<\/span><\/i><\/p>\n

The OpenShift CLI exposes commands for managing your applications, as well as lower level tools to interact with each component of your system.<\/span><\/p>\n

First we need to login to the VM.<\/span><\/p>\n

On your local machine use open ssh<\/code> to connect.<\/span><\/p>\n

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prefix<\/span><\/code><\/span> is the prefix you added in the survey while deploying OpenShift OKD.<\/span><\/p>\n

towerLabKeyPrivate<\/code><\/span> is the private key created in <\/span>episode 1<\/span><\/a>.<\/span><\/p>\n

After login we can start with the oc<\/code> command, which has a built-in help system.<\/span><\/p>\n

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This --help<\/code> flag works on different levels of the command. <\/span><\/p>\n

Example: to see the options for the oc project<\/code> command:<\/span><\/p>\n

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To get started, you first need to login.<\/span><\/p>\n

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Now, we will create a new project for mariadb<\/em>.<\/span><\/p>\n

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Make this project the active one. <\/span><\/p>\n

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The next step is to create the application in this project.<\/span><\/p>\n

It is possible to set variables during the app creation.<\/span><\/p>\n

Set the MYSQL_USER<\/code>, the MYSQL_PASSWORD<\/code> and the MYSQL_ROOT_PASSWORD<\/code> to developer. Then set the MYSQL_DATABSE<\/code> to phpDB.<\/span><\/p>\n

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The last step is to expose the application so it is accessible to the outside world.<\/span><\/p>\n

This command will create a route to the mariadb application you created with the previous command. <\/span><\/p>\n

The developer user has standard only access via the internal network and not public.<\/span><\/p>\n

You can connect to the pod via ssh<\/code>.<\/span><\/p>\n

First search for the pod name, and then connect to the pod with the oc rsh<\/code> command.<\/span><\/p>\n

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Now we can check the ip of the pod via ifconfig<\/code> (ip command is not available) and connect to mariadb via the mysql<\/code> command.<\/span><\/p>\n

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Create a user table and add three rows.<\/span><\/p>\n

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This table can now be used by other pods in the same network.<\/span><\/p>\n

You can, for example, change the php application to use this database.<\/span><\/p>\n

In playbook-3yml included in this <\/span>gitlab repo<\/span><\/a> we used for installing OpenShift OKD, we commented out the role osInstallMariaDb<\/code>. If you uncomment this role, it will install MariaDb.<\/span><\/p>\n

You can also modify the provided php application. Try to make it work together with the database we created. <\/span><\/p>\n