In this article, we will get deep insight of, how cisco uses MongoDB to boost its WebEx Social.
Before going into the case study ,lets understand what is NoSQL DB, MongoDB and its components.
📚What is NoSQL ?
⚡NoSQL databases (Not Only SQL) are non tabular, and store data differently than relational tables. NoSQL databases come in a variety of types based on their data model. The main types are document, key-value, wide-column, and graph. They provide flexible schemas and scale easily with large amounts of data and high user loads.
⚡People often says the term “NoSQL DB” refers to…
In this article let’s deep dive into the distinguished routing protocol : OSPF
👉What actually OSPF is ?
Open Shortest Path First is a routing protocol for Internet Protocol(IP) networks,which uses a link state routing (LSR) algorithm ,falling into the groups of interior gateway protocols (IGPs) , operating within a single autonomous system(AS).
In addition to above details , OSPF supports the Classless Inter-Domain Routing (CIDR) addressing model.It is a widely used IGP in large enterprise networks,IS-IS ,another LSR-based protocol,is more common in large service provider networks.
👉How does OSPF operate?
In this blog,we are going to discuss about how ML is integrated with some of the industrial use-cases to solve the issues may be threats related to security mostly.
So lets understand first ,
💻Cyber security refers to the body of technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, damage, or unauthorized access. Cyber security may also be referred to as information technology security.
Cyber security is important because government, military, corporate, financial, and medical organizations collect, process, and store unprecedented amounts of data on computers and other devices. A significant portion of that…
In this article, we will be diminishing our dilemma while creating Ansible roles and organised way to keep our ansible code..
Roles let you automatically load related vars_files, tasks, handlers, and other Ansible artifacts based on a known file structure. Once you group your content in roles, you can easily reuse them and share them with other users.
Create an Ansible Playbook which will dynamically
load the variable file named same as OS_name and just by
using the variable names we can Configure our target node.
(Note: No need to use when keyword here.)
Lets lookup how this can be done:
Before discussing further , we need to know what are the ansible-facts:
Ansible facts are data related to your remote systems, including operating systems, IP addresses, attached filesystems, and more. You can access this data in the
Scenario : Our aim is to dynamically update the inventory file of hosts ,so that on the fly we can configure docker container as WebServer once it is launched….
Let we get insight over how it could be done :
1️⃣First of all , we would create our own ssh_enabled docker image:
first of all ,create working directory ..
Now create docker file :
Dockerfile is the default name recognized by the docker build command….
📚Our goal is to configure Haproxy Server using ansible , while the configuration files of haproxy will be dynamically updated as number of hosts incremented.
First of all, lets understand :
🤔what is Reverse Proxy?
In computer networks such as the internet, a reverse proxy is a common type of proxy server that is accessible from the public network. Large websites and content delivery networks use reverse proxies –together with other techniques– to balance the load between internal servers.
Now lets go more deep ….
🤔What is Haproxy ?
HAProxy is free, open source software that provides a high availability…
To get started with AWS CLI and installation process refer docs
Lets see how we can create this High Availability Architecture :
✅Launch EC2 instance :
To configure AWS account :
Use : #aws configure
Here you need to specify the Access Key and ID along with Region Launching AMI Linux instance :
# aws ec2 run-instances --image-id ami-0e306788ff2473ccb --count 1 --instance-type t2.micro --key-name <key_name> --security-group-ids sg-09ac2ee9a41df7156 --subnet-id subnet-21212849
🔰 RECTIFICATION : Restarting HTTPD Service is not
idempotence in nature and also consume more
resources suggest a way to rectify this challenge
in Ansible playbook
Lets see how we can rectify this challenge ….
🟥Using when Keyword: Conditional expression, determines if an iteration of a task is run or not…..
🟥Using handlers : Handlers are just like regular tasks in an Ansible playbook (see Tasks) but are only run if the Task contains a notify directive and also indicates that it changed something. …
👉Our Aim : Configure Hadoop and start cluster services using Ansible Playbook…..
Ansible is an open-source software provisioning, configuration management, and application-deployment tool enabling infrastructure as code. It runs on many Unix-like systems, and can configure both Unix-like systems as well as Microsoft Windows.
An Ansible® playbook is a blueprint of automation tasks — which are complex IT actions executed with limited or no human involvement. Ansible playbooks are executed on a set, group, or classification of hosts, which together make up an Ansible inventory.
Apache Hadoop is a collection of open-source software utilities that facilitates using a network of…