DevOps :: DevSecOps

How to integrate Capistrano with Docker for deployment? Lets start with small introduction about 'Capistrano' . Capistrano is a framework for building automated deployment scripts on remote node.Its an open source tool which is written in Ruby, but it can easily be used to deploy any language. Basically capistrano installed to and runs from your working computer. When you command Capistrano to do something on a server, it connects to the server via SSH and works there using shell commands. Lets see how the directory structure of capistrano looks like.If you are running capistrano first time ,you run below commands to initialise it,Which will create directory structure for you. $ mkdir capistrano/ $ cd capistrano/ $ cap install - mkdir -p config/deploy - create config/deploy.rb - create config/deploy/staging.rb - create config/deploy/production.rb - mkdir -p lib/capistrano/tasks - create Capfile - Capified To understand m

How to create a re-usable MakeFile for build, push and deploy docker containers? and automate build using Jenkins pipeline.? Typing a long docker commands is always a pain.We can create a script to help us out. Bash can be used here, but using a Makefile for more convenient than script, as the syntax is easy to get started with. Clone below repo [ MakeFile_repo ] and go to the directory.  git clone git@github.com:Prashanth-Pullaikodi/Makefile_Docker_Build.git Repo contains below files and folders. 1. MakeFile: Contains make configuration to build, push and deploy containers. Inorder to run the make command you needs to have docker installed and docker hub account . 2. Nginx: Contains Dockerfile to build NGINX . 3. Jenkinsfile: Contains CD pipile line defintion of automating this build ,push deploy task. Inorder have to use this file you needs to have Jenkins installed and configured with pipeline ,Git plugins. You can use Makefile without Jenkins as well . Makefile

Explain Security features Linux System ?. Linux OS can be represented in the following with three layers. User, System and kernel.Kernel ,Consist of all the operating system resources such as file system ,memory, input/output modules and libraries.The System layer consist of system resources such as Application System interface (API). And the User layer consist of all the user resources will reside such as application programs. Linux is a multi-users and multi-tasking OS. Single Linux OS can provide services for more than one user at any time either locally and/or remotely. Every user has their own profile with custom settings that can be set by the user herself for the permitted settings or enforced by Root from the system side. For every user, there will be multi process running ‘concurrently’ for him,locally and/or remotely and it is said multi-tasking OS. In another simple word, single user can run many programs at any time. In order to optimize the resources such

What is "LDIF" ?. The LDAP Interchange Format (LDIF) is a standard text file format for storing LDAP configuration information and directory contents. LDIF files are often used to import new data into your directory or make changes to existing data. Name the object class types?. Structural Object class Auxiliary Object class Abstract object classes Why LDAP is called light weight?. LDAP (Lightweight Directory Access Protocol) is a protocol for communications between LDAP servers and LDAP clients. LDAP servers store "directories" which are access by LDAP clients.LDAP is called lightweight because it is a smaller and easier protocol which was derived from the X.500 DAP What is SLAPD? SLAPD stands for Stand-Alone LDAP.Clients connect to the server over the LDAP protocol, usually using a network-based connection (though SLAPD provides a UNIX socket listener). Which daemons are required for LDAP server? slapd and slurpd Tell me the name of three