Hitachi Vantara Pentaho - BI Suite Tutorials: June 2017

Wednesday, 21 June 2017

Tip : Right Alignment of numeric type fields in Pentaho CDE table component

In CDE resources add below CSS code to align table numeric data to right side.

Below will work as the type of field is numeric which is available in table type
table tbody td.numeric, th.numeric{ text-align: right; }

This will not work as the type of field is given number which is not available in Table Types
table tbody td.number, th.number{ text-align: right; }

Sample output:

Right aligned values in Table Cell

Tuesday, 20 June 2017

Kubernetes Single Node Cluster Installation/Setup in Windows 7

This post describes steps to install minikube and kubectl single node cluster in windows 7 environment.

To setup kubernetes single node cluster we need to download 2 .exe files.
They are
1) minikube and 2) kubectl

Follow below steps to install kubernetes in windows7 and start playing with commands and single node cluster environment.

NOTE : To install it in windows 10, please follow steps explained in the reference link.

1) Download MiniKube from
https://github.com/kubernetes/minikube/releases

2) Download kubectl from
https://kubernetes.io/docs/tasks/tools/install-kubectl/

3) Place these two .exe files in C drive

That's all Instillation is done.!

4) Open Windows Power Shell as Admin Mode

5) Checking versions of minicube and kubectl

>.\minikube.exe version
>.\kubectl.exe version

NOTE : Client and Server should be of latest from download location
Major version difference may not work.

6) Starting minicube Server and Checking the Status
>.\minikube.exe start
>.\minikube.exe status

7) When you run .\minikube.exe start for the first time, kubernates create a .minikube folder inside the User folder.
Path to find : .minikube folder
C:\Users\sadakar.pochampalli\.minikube

8) Checking Kubernetes versions
.\minikube get-k8s-versions

References :
https://rominirani.com/tutorial-getting-started-with-kubernetes-on-your-windows-laptop-with-minikube-3269b54a226

https://kubernetes.io/docs/tasks/tools/install-kubectl/

In next post, we will see some basic commands to use and how to launch minikube dashboard.

- Sadakar Pochampalli

Saturday, 17 June 2017

Docker Installation in Cent OS 7

This post will talk about how to quickly install docker in Cent OS 7 installed in Oracle virtual box.

Host System : Windows 10, Guest System : Cent OS 7,
Network : Network address translation (NAT)

1) Install latest Oracle Virtual Box (https://www.virtualbox.org/wiki/Downloads)
2) Install latest full or minimal Cent OS 7 in V.Box(https://www.centos.org/)
NOTE : Make sure, Network setup is done while installing Cent OS 7
3) Update yum command (yum update)
4) Open terminal and login as root user ( $su )
5) Install docker : yum install docker
6) Once the installation is completed check where the docker is installed

$which docker

$docker version

Checking whether the docker demon is running or not
$sudo service docker status

Starting docker server
$sudo service docker start
OR
$ sudo systemctl start docker

Stop the docker server:
$sudo service docker stop
OR
$ sudo systemctl stop docker

References :
https://docs.docker.com/engine/installation/linux/centos/#install-using-the-repository

YUM (Yellowdog Updater Modified) is an open source command-line as well as graphical based package management tool for RPM (RedHat Package Manager) based Linux systems

Re-Blogging : How To Cent OS 7 / RHEL 7 Install Gnome Desktop Using Yum

Hi,

To install Desktop for Cent OS -7 follow below steps explained in the blog

https://www.cyberciti.biz/faq/howto-install-gnome-gui-desktop-on-centos-rhel-7-server/

NOTE : The Cent OS 7 ISO images are available as full stack (server+desktop) and minimal only (i.e., server).
If you install server first and then later point of time if you want desktop follow the steps explained in mentioned link above or execute below commands.

Quick Steps :
1) sudo yum groups install "GNOME Desktop" (installs desktop)
2) sudo systemctl set-default graphical.target (boot the OS with desktop directly)
3) sudo systemctl start graphical.target (Switch command line interface to dekstop from Terminal with out booting).

Few Quick Snapshots: