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Showing posts with label DevOPs. Show all posts
Showing posts with label DevOPs. Show all posts

Saturday, 2 September 2017

DevOps - development and operations





DevOps (development and operations) is an enterprise software development phrase used to mean a type of agile relationship between development and IT operations. The goal of DevOps is to change and improve the relationship by advocating better communication and collaboration between these two business units.




Why Do We Need DevOps in the Enterprise?

In the enterprise there is a need to break down silos, where business units operate as individual entities within the enterprise where management, processes and information are guarded.  On the software development side — and for those working in IT operations — there needs to be better communication and collaboration to best serve the IT business needs of the organization. 

DevOps Culture

One answer to breaking down enterprise silos is the move towards a DevOps-based culture that partners developers with operations staff to ensure the organization achieves optimal running of software with minimal problems.  This culture is one that supports a willingness to work together and share.
The DevOps culture puts a focus on creating a fast and stable work flow through development and IT operations.  One main goal of DevOps is to deploy features into production quickly and to detect and correct problems when they occur, without disrupting other services.

DevOps Principles

DevOps is not based on stringent methodologies and processes: it is based on professional principles that help business units collaborate inside the enterprise and break down the traditional silos. The guiding principles of DevOps include culture, measurement, automation and sharing.
DevOps is considered to be a new approach to the more traditional application lifecycle management (ALM) process.

Saturday, 26 August 2017

DevOps installation guide

                                        Image result for devops

Note: The Operating System used is Centos; YUM commands will work on RedHat, Fedora. If you are using Ubuntu, please use sudo apt-get


    

$ vi /var/named/named.hadoop.forward.zone

Similarly, for the reverse lookup

                                             $TTL 86400  
                                            
@ IN SOA ns1.cluster1.com. root.cluster1.com. (
                                                                             1997022700 ; Serial 
                                                                             28800 ; Refresh 
                                                                             14400 ; Retry 
                                                                            3600000 ; Expire 
                                                                            86400 ) ; Minimum 
                 1.168.192.in-addr.arpa.                IN NS ns1.cluster1.com.


                                  70 IN PTR nn1.cluster1.com.
                                 40 IN PTR kdc.cluster1.com.
                                 41 IN PTR cm.cluster1.com.

Make sure permissions are correct for “/var/named/”, owned by named.
                                 $ service named restart
Test the resolution:
$ nslookup 
Make sure DNS service comes up automatically. 
$ chkconfig named on



Next Install Apache Tomcat HTTPD:




   $ yum install httpd -y


All the configuration files are under “/etc/httpd/conf”. By default, we do not need to change anything. Just create a simple html file under “/var/www/html”.

$ cd /var/www/html 
$ echo “This is test” > index.html 
$ service httpd restart 



NEXT INSTALL ENGINEX: