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Best Practices For Successful Implementation Of DevOps

What is DevOps?DevOps is nothing but the combination of process and philosophies which contains four basic component culture, collaboration, tools, and practices. In return, this gives a good automated system and infrastructure which helps an organisation to deliver a quality and reliable build. The beauty of this culture is it enables a quality for organizations to better serve their customers and compete more effectively in the market and also add some promised benefits which include confidence and trust, faster software releases, ability to solve critical issues quickly, and better manage unplanned work.                                       “DevOps is not a goal, but a never-ending process of continual improvement.”                                                                           Jez Humble Here are the key DevOps best practices that can help you for successful implementation of DevOps.1. Understand Your Infrastructure need: Before building the infrastructure, spend some good time to understand the application and then align your goals to design your Infrastructure and this implementation of DevOps should be business-driven. While understanding infra, make sure you are capturing below components:Cycle Time: Your software cycle needs to be defined in a generic way where you need to know the limitations, ability and if there is any down time then the exact time need to be noted.Versioning Environments: While planning DevOps, always be ready for an alternative solution and versioning your environments helps you to roll out/back your plan. If you are having multiple module and tightly coupled then it requires a clean and neat plan to identify each and every patch and release.Infra as a code: When we say infra as a code it means a solution to addressing both needs – minimizing cycle time and versioning environments can be addressed by capturing and managing your Infrastructure as code. What you built should scalable for a long run.2. Don’t jump start: There is any need to automate the complete cycle in one shot, always take a small entity and apply your philosophy and get this validated. Once you feel your POC is justified, start scaling up now and create a complete pipeline and define a process so anytime you can go back and check what all need to improve and where. All these small success will help you to get confidence internally in your team and builds a trust to stakeholder and your customers.                                                        “DevOps isn’t magic, and transformations never happen overnight”3. Continuous Integration and Continuous Deployment: If your team is not planning to implement this continuous integration and continuous delivery, then it is not fair with DevOps. Even I’ll say the beauty of DevOps is how frequently your team can deliver without disturbance and how much you are automated in this process. Let’s take a use case: You and your team members are working in an Agile team. In fact, there are multiple teams and multiple modules which are tightly coupled in which you are also involved. Every day you work on your stories and at the end of the day, you push your ‘private build’ of your work to verify if it builds and ‘deliver’ it to a team build server and same applies to other individuals. Which indicates you all ‘integrate’ your work in the common build area and do an ‘Integration Build’. Doing these integrations and builds to verify them on a regular, preferably daily basis, is what is known as Continuous Integration.Continuous Deployment doesn’t mean every change is deployed to production as soon as possible. It means every change is proven to be deployable at any time.  What it takes is your all validated feature and build from CI and deploys them into the production environment. And here we can follow some of the practices. a) Maintain a Staging Environment that Emulates Production b) Always deploy in staging then move to production c) Automate Testing of Features and Nonfunctional Requirements d) Automatically fetch version-controlled development artifacts.4. Define Performance and do benchmarking: Always do some performance testing and get a collective benchmarking report for the latest build shared by your team because this will only justify the quality of your build and the required infra as well.For example: We have done one performance testing a few days back and got good results, explaining in details. So we did some benchmarking for our CFM machines because we are having a global footprint and at the same time, for us, latency matters and we need CFM in the nearest region. We have verified with our current build how many requests we can handle and we found we are firing more than 200 RPS (request per second). So we planned to check our build capability and fired a good number of requests and noted the number where our build got crashed and noted the RPS and then we did autoscaling of CFM. We might have upgraded our CFM but we planned for auto scaling because the number of requests is an assumption and we don’t want to spend amount for that but at the same time we are ready to consume the experimented traffic. And then we found 7 out 2 CFM are only consuming exact or little less number configuration and request (181 to 191 RPS). So we shared a report to the business team to focus on other regions where we were having very less traffic because we were paying the same amount.Conclusion: We verified our build which has given good confidence to our dev team and we shared the report to the business team which helped them to plan their marketing strategies, meanwhile we completed auto scaling the process as well.  5. Communicate and Collaborate: Collaboration and communication are the X-factors to help organisation grow and assess for DevOps. Collaboration with business and development team helps DevOps team to understand to design & define a culture. This helps to speed up the development, operations, and even other teams like marketing or sales, allowing all parts of the organization to align more closely with goals and projects.6. Start Documenting: Document everything (All your work done) which you are spreading across the process and infrastructure and specially the reports, RCA’s (Root cause Analysis), change management. This helps you to go back and see if all issues we faced can be automated in the next cycle or other ways to handle them smoothly without interrupting your production environment.7. Keep your eyes on cost burning: It has been experienced many a time that if we don’t keep an eye on cloud bills it will keep increasing and will tend to be proportional to the growth of your business till the time you don’t look for optimization. Always do an audit in 2 months and evaluate your cloud computation to optimize. Do some experiment with infra because you should not spend not more than 5  to 10 % of cost for cloud infra if you are completely dependent. Tools you can try : Reoptimize, Cloudyn, Orbitera etc.                                                                                 “If you are DevOps you should account the no’s.”8. Secure your infra : If your team follows certain compliances from day 1 then there is very less chance to compromise with your data and this can be easily enabled by providing a setup where you can verify your vulnerabilities. Before moving your build to the production team you may need to follow the standard at an early stage of development by using configured tools like: SonarQube, VeraCode, Codacy, CodeClimate etc.9. Tool Selection: Always select tools which all are compatible with rest of the toolchain you are planning to use. Why you should have to be so careful is because you have to capture each and every request capture. Once you are done with the tool selection, draft a tools metrics you are willing to capture or will be going to help you to debug. Start logging and monitoring them and have some clear definition for those logs so you can justify and determine that your processes are working as expected. Tools you can have a look: Nagios, Grafana, Pingdom, Monit, OpsGenie, Observium, Logstash etc.                                                                                                        Tool chain for DevOps process:                                                                             “If you are not monitoring,  you are not in the production”Conclusion:An organization that follows all the above best practices creates the right culture, which finally gets the ending it deserves i.e DevOps organization. "A good DevOps organization will free up developers to focus on doing what they do best: write software," says Rob Steward, Vice President of product development at Progress Software. "DevOps should take away the work and worry involved in deploying, securing and running the software once it is written."

Best Practices For Successful Implementation Of DevOps

2353
Best Practices For Successful Implementation Of DevOps

What is DevOps?

DevOps is nothing but the combination of process and philosophies which contains four basic component culture, collaboration, tools, and practices. In return, this gives a good automated system and infrastructure which helps an organisation to deliver a quality and reliable build. The beauty of this culture is it enables a quality for organizations to better serve their customers and compete more effectively in the market and also add some promised benefits which include confidence and trust, faster software releases, ability to solve critical issues quickly, and better manage unplanned work.

                                       “DevOps is not a goal, but a never-ending process of continual improvement.”
                                                                           Jez Humble




Here are the key DevOps best practices that can help you for successful implementation of DevOps.

1. Understand Your Infrastructure need: Before building the infrastructure, spend some good time to understand the application and then align your goals to design your Infrastructure and this implementation of DevOps should be business-driven. While understanding infra, make sure you are capturing below components:
Components to understand infrastructure

  • Cycle Time: Your software cycle needs to be defined in a generic way where you need to know the limitations, ability and if there is any down time then the exact time need to be noted.
  • Versioning Environments: While planning DevOps, always be ready for an alternative solution and versioning your environments helps you to roll out/back your plan. If you are having multiple module and tightly coupled then it requires a clean and neat plan to identify each and every patch and release.
  • Infra as a code: When we say infra as a code it means a solution to addressing both needs – minimizing cycle time and versioning environments can be addressed by capturing and managing your Infrastructure as code. What you built should scalable for a long run.

2. Don’t jump start: There is any need to automate the complete cycle in one shot, always take a small entity and apply your philosophy and get this validated. Once you feel your POC is justified, start scaling up now and create a complete pipeline and define a process so anytime you can go back and check what all need to improve and where. All these small success will help you to get confidence internally in your team and builds a trust to stakeholder and your customers.

                                                        “DevOps isn’t magic, and transformations never happen overnight”

3. Continuous Integration and Continuous Deployment: If your team is not planning to implement this continuous integration and continuous delivery, then it is not fair with DevOps. Even I’ll say the beauty of DevOps is how frequently your team can deliver without disturbance and how much you are automated in this process. Let’s take a use case: You and your team members are working in an Agile team. In fact, there are multiple teams and multiple modules which are tightly coupled in which you are also involved. Every day you work on your stories and at the end of the day, you push your ‘private build’ of your work to verify if it builds and ‘deliver’ it to a team build server and same applies to other individuals. Which indicates you all ‘integrate’ your work in the common build area and do an ‘Integration Build’. Doing these integrations and builds to verify them on a regular, preferably daily basis, is what is known as Continuous Integration.

 Continuous Integration and Continuous Deployment

Continuous Deployment doesn’t mean every change is deployed to production as soon as possible. It means every change is proven to be deployable at any time.  What it takes is your all validated feature and build from CI and deploys them into the production environment. And here we can follow some of the practices. a) Maintain a Staging Environment that Emulates Production b) Always deploy in staging then move to production c) Automate Testing of Features and Nonfunctional Requirements d) Automatically fetch version-controlled development artifacts.

4. Define Performance and do benchmarking: Always do some performance testing and get a collective benchmarking report for the latest build shared by your team because this will only justify the quality of your build and the required infra as well.

For example: We have done one performance testing a few days back and got good results, explaining in details. So we did some benchmarking for our CFM machines because we are having a global footprint and at the same time, for us, latency matters and we need CFM in the nearest region. We have verified with our current build how many requests we can handle and we found we are firing more than 200 RPS (request per second). So we planned to check our build capability and fired a good number of requests and noted the number where our build got crashed and noted the RPS and then we did autoscaling of CFM. We might have upgraded our CFM but we planned for auto scaling because the number of requests is an assumption and we don’t want to spend amount for that but at the same time we are ready to consume the experimented traffic. And then we found 7 out 2 CFM are only consuming exact or little less number configuration and request (181 to 191 RPS). So we shared a report to the business team to focus on other regions where we were having very less traffic because we were paying the same amount.

Conclusion: We verified our build which has given good confidence to our dev team and we shared the report to the business team which helped them to plan their marketing strategies, meanwhile we completed auto scaling the process as well.  

5. Communicate and Collaborate: Collaboration and communication are the X-factors to help organisation grow and assess for DevOps. Collaboration with business and development team helps DevOps team to understand to design & define a culture. This helps to speed up the development, operations, and even other teams like marketing or sales, allowing all parts of the organization to align more closely with goals and projects.

Communicate and Collaborate

6. Start Documenting: Document everything (All your work done) which you are spreading across the process and infrastructure and specially the reports, RCA’s (Root cause Analysis), change management. This helps you to go back and see if all issues we faced can be automated in the next cycle or other ways to handle them smoothly without interrupting your production environment.

Start Documenting

7. Keep your eyes on cost burning: It has been experienced many a time that if we don’t keep an eye on cloud bills it will keep increasing and will tend to be proportional to the growth of your business till the time you don’t look for optimization. Always do an audit in 2 months and evaluate your cloud computation to optimize. Do some experiment with infra because you should not spend not more than 5  to 10 % of cost for cloud infra if you are completely dependent. Tools you can try : Reoptimize, Cloudyn, Orbitera etc.

Tools you can try in devops

                                                                                 “If you are DevOps you should account the no’s.”

8. Secure your infra : If your team follows certain compliances from day 1 then there is very less chance to compromise with your data and this can be easily enabled by providing a setup where you can verify your vulnerabilities. Before moving your build to the production team you may need to follow the standard at an early stage of development by using configured tools like: SonarQube, VeraCode, Codacy, CodeClimate etc.

Devops Quote

9. Tool Selection: Always select tools which all are compatible with rest of the toolchain you are planning to use. Why you should have to be so careful is because you have to capture each and every request capture. Once you are done with the tool selection, draft a tools metrics you are willing to capture or will be going to help you to debug. Start logging and monitoring them and have some clear definition for those logs so you can justify and determine that your processes are working as expected. Tools you can have a look: Nagios, Grafana, Pingdom, Monit, OpsGenie, Observium, Logstash etc.

  Tool chain for DevOps process

                                                                                                        Tool chain for DevOps process:

Kafka Consumer group topic lag

                                                                             “If you are not monitoring,  you are not in the production”

Conclusion:

An organization that follows all the above best practices creates the right culture, which finally gets the ending it deserves i.e DevOps organization. "A good DevOps organization will free up developers to focus on doing what they do best: write software," says Rob Steward, Vice President of product development at Progress Software. "DevOps should take away the work and worry involved in deploying, securing and running the software once it is written."

MD Zaid

MD Zaid Imam

Project Manager

Md Zaid Imam is currently serving as Project Manager at Radware. With a zeal for project management and business analytics, Zaid likes to explore UI/UX, backend development, and DevOps. Playing a crucial role at his current job, Zaid has helped his team to deliver world-class product features that cater to the demand of current industry requirements of bot mitigation arena (Processing 50 billion API calls per month). Zaid is a regular contributor on Hashnode.


Website : https://zaid.hashnode.dev

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5 comments

Rabinath jha 11 Jul 2018

Awesome post

Chittranjan Kumar Jha 14 Jul 2018

This is Wholesome philosophies about DevOps. Good for Beginners.

Arnab Roy 16 Jul 2018

Excellent stuff for quick learning

vepambattu chand 31 Jul 2018

Very Good and Useful Information about DevOps, Thanks For Sharing Nice Article.

Prathik vats 28 Nov 2018

In which industries can you find DevOps organizations?

KnowledgeHut Editor 28 Nov 2018

Home automation Industrial automation Medical devices Video surveillance Networking

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The hardware and software requirements are discussed below:Hardware requirementsMaster node with at least 2 GB memory. (Additional will be great)Worker node with 700 MB memory capacity.Your Mouse/Keyboard (monitor navigation)Software requirementsHype-VDocker DesktopUnique MAC addressUnique product UUID for every nodeEnsuring that there is a full range of connectivity between all the machines in the cluster is a must.Installation ProcedureStep 1: Install & Setup Hyper-VAs we all know, Windows has its virtualization software, known as Hyper-V, which is essentially VirtualBox on steroids. Hyper-V allows you to manage your virtual machines (VMs) using either the free Microsoft GUI tool or the command line. It's simple to enable Hyper-V, but first, make sure your PC meets the following requirements:Your operating system should be Windows 10 (Enterprise, Pro, or Education), withAt least 4GB of RAM and CPU Virtualization support, though you should double-check that it's turned on in your BIOS settings.You can disable or enable features like Hyper-V that may not be pre-installed when Windows is installed. Always keep in mind that some of the features require internet access to download additional Windows Update components.To enable Hyper-V on your machine, follow the steps below:1. Open the Control Panel.2. Select Programs from the left panel.3. Next, go to Programs and Features, then Turn Windows Features On or Off.4. Examine Hyper-V and the Hypervisor Platform for Windows.5. Select OK.Your system will now begin installing Hyper-V in the background; it may be necessary to reboot a few times until everything is properly configured. Don't hold your breath for a notification or anything! Verify that Hyper-V is installed successfully on your machine by running the following command as Administrator in PowerShell:Get-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-VOnce the state is shown as Enabled for above command in Power shell, we are good to go.Step 2: Download Docker for Windows and install it.Kubernetes is a container orchestration system built on top of Docker. It is essentially just a tool for communicating with Docker containers and managing everything at an enterprise level. Simply go to install Docker and click to Get Docker Desktop for Windows (stable).Windows users can use Docker Desktop.Docker Desktop for Windows is a version of Docker optimized for Windows 10. It's a native Windows application that makes developing, shipping, and running dockerized apps simple. Docker Desktop for Windows is the fastest and most reliable way to develop Docker apps on Windows, as it uses Windows-native Hyper-V virtualization and networking. Docker Desktop for Windows can run Docker containers on both Linux and Windows.Installation of Docker DesktopLet us take a look on the different steps involved in installing docker desktop.Double-click Docker for Windows Installer to run the installer.Docker starts automatically once the installation is complete. Docker is running and accessible from a terminal, as indicated by the whale in the notification area.Run Try out some Docker commands in a command-line terminal like PowerShell!  Run the Docker version to check the version.Run Docker run hello-world to verify that Docker can pull and run images.Boom!As long as the Docker Desktop for Windows app is running, Docker is accessible from any terminal. The Docker whale in the taskbar has a setting button that can be accessed from the UI.For a detailed step by step installation guide with screenshot, visit the blog - How to Install Docker on Windows, Mac, & Linux: A Step-By-Step GuideWARNING: FOLLOW THE INSTRUCTIONS BELOW! If Docker was successfully installed but you can't find its tray icon, you'll need to restart your computer. Check the official troubleshooting guide here if the issue persists. Step 3: Install Kubernetes on Windows 10Docker includes a graphical user interface (GUI) tool that allows you to change some settings or install and enable Kubernetes.To install Kubernetes, simply follow the on-screen instructions on the screen:1. Right-click the Docker tray icon and select Properties.2. Select "Settings" from the drop-down menu.3. Select "Kubernetes" from the left panel.4. Check Enable Kubernetes and click "Apply"Docker will install additional packages and dependencies during the installation process. It may take between 5 and 10 minutes to install, depending on your Internet speed and PC performance. Wait until the message 'Installation complete!' appears on the screen. The Docker app can be used after Kubernetes has been installed to ensure that everything is working properly. Both icons at the bottom left will turn green if both services (Docker and Kubernetes) are running successfully and without errors.Example.Step 4: Install Kubernetes DashboardThe official web-based UI for managing Kubernetes resources is Kubernetes Dashboard. It isn't set up by default. Kubernetes applications can be easily deployed using the cli tool kubectl, which allows you to interact with your cloud and manage your Pods, Nodes, and Clusters. You can easily create or update Kubernetes resources by passing the apply argument followed by your YAML configuration file.Use the following commands to deploy and enable the Kubernetes Dashboard.1. Get the yaml configuration file from here.2. Use this to deploy it. kubectl apply -f .\recommended.yaml3. Run the following command to see if it's up and running.:kubectl.exe get -f .\recommended.yaml.txtStep 5: Access the dashboardThe dashboard can be accessed with tokens in two ways: the first is by using the default token created during Kubernetes installation, and the second (more secure) method is by creating users, giving them permissions, and then receiving the generated token. We'll go with the first option for the sake of simplicity.1. Run the following command PowerShell (not cmd)((kubectl -n kube-system describe secret default | Select-String "token:") -split " +")[1]2. Copy the generated token3. Runkubectl proxy.4. Open the following link on your browser: http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/5. SelectToken & paste the generated token6. Sign InFinallyYou'll be able to see the dashboard and your cloud resources if everything is set up correctly. You can then do almost all of the "hard" work without having to deal with the CLI every time. You may occasionally get your hands dirty with the command line, but if you don't understand Docker and Kubernetes or don't have the time to manage your own cloud, it's better to stick with some PaaS providers that can be quite expensive.Kubernetes Uninstallation ProcessThe procedures for uninstalling cert-manager on Kubernetes are outlined below. Depending on which method you used to install cert-manager - static manifests or helm - you have two options.Warning: To uninstall cert-maneger, follow the same steps as you did to install it, but in reverse. Whether cert-manager was installed from static manifests or helm, deviating from the following process can result in issues and potentially broken states. To avoid this, make sure you follow the steps outlined below when uninstalling.Step 1: Before continuing, make sure that all user-created cert-manager resources have been deleted. You can check for any existing resources with the following command:$ kubectl get Issuers,ClusterIssuers,Certificates,CertificateRequests,Orders,Challenges --all-namespacesAfter you've deleted all of these resources, you can uninstall cert-manager by following the steps outlined in the installation guide.Step 2: Using regular manifests to uninstall.Uninstalling from a regular manifest installation is as simple as reversing the installation process and using the delete command.kubectl.2. Delete the installation manifests using a link to your currently running version vX.Y. Z like so:$ kubectl delete -f https://github.com/jetstack/cert-manager/releases/download/vX.Y.Z/cert-manager.yamlStep 3: Uninstalling with Helm.1. Uninstalling cert-manager from a Helm installation is as simple as reversing the installation process and using the delete command on both the server and the client. kubectl and helm.$ helm --namespace cert-manager delete cert-manager2. Next, delete the cert-manager namespace:$ kubectl delete namespace cert-manager3. Finally, delete the cert-manger CustomResourceDefinitions using the link to the version vX.Y.Z you installed:$ kubectl delete -f https://github.com/jetstack/cert-manager/releases/download/vX.Y.Z/cert-manager.crds.yamlThe namespace is in the process of being terminated.The namespace may become stuck in a terminating state if it is marked for deletion without first deleting the cert-manager installation. This is usually because the APIService resource is still present, but the webhook is no longer active and thus no longer reachable.4. To fix this, make sure you ran the above commands correctly, and if you're still having problems, run:$ kubectl delete apiservice v1beta1.ConclusionIn this tutorial, we have explained in detail how to install Kubernetes with Hyper-V. Also, we have tackled what requirements we need, both in terms of the software and hardware. We have explained how to install Hyper-V and Docker on Windows 10.   It is important to note that the fundamental difference between Kubernetes and Docker is that Kubernetes is meant to run across a cluster and Docker is meant to run through nodes.   Kubernetes is also more extensive than Docker Swarm and is meant to coordinate a cluster of nodes at scale in production in an efficient manner. Each software is crucial to having a smooth installation process.   We finally looked at how to install and uninstall Kubernetes.
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How To Install Jenkins on Ubuntu

Jenkins is a Java-built open-source Continuous Integration (CI) and CD platform. Basically, Jenkins builds software projects, checks and deploys them. This is one of the most practical programming tools you can master, and today we will show you how Jenkins is installed on Ubuntu 18.04. Use this powerful tool to activate your VPS server!Jenkins is loved by teams of all sizes, for different language projects like Java, Ruby, Dot Net, PHP etc. Jenkins is a platform that is autonomous, and can be used on Windows, Linux or any other operating system.  Prerequisites Hardware Requirements: RAM- 4 GB (Recommended) Storage- more than 50 GB of Hard Disk Space (Recommended)        Software Requirements: Java: Java Development Kit (JDK) or Java Runtime Environment (JRE).  Web Browser: Any browser such as Google Chrome, Mozilla Firefox, Microsoft Edge. Operating System: An Ubuntu 18.04 server installed with a non-root sudo user and firewall. For help in the planning of production capability of a Jenkins installation see Choosing the right hardware for Masters. Why Use Jenkins? You need to consider continuous integration (CI) and continuous delivery (CD) to understand Jenkins: Continuous integration – the practice of continuous production combined with the main industry.  Continuous delivery – the code is constantly delivered to an area after the code is ready for delivery. It could be for production or staging. The commodity is supplied to a consumer base that can provide QA or inspection by customers. Developers update the code regularly in the shared repository (such as GitHub or TFS). Improvements made in the source code are made at the end of the day, making it difficult to identify the errors. So, Jenkins is used here. Once a developer changes the repository, Jenkins will automatically enable the build and immediately warn you in the event of an error (Continuous Integration CI). Installation Procedure: Step 1: Install Java Skip to the next section if you have Java already installed on your system. To check, please run the following command in the terminal: java --version Jenkins needs Java for running, but it doesn't include certain distributions by default, and Java versions of Jenkins are incompatible. Multiple Java implementations are available to you. OpenJDK is currently the most popular one, which we will use in this guide. Being an open-source Java application, Jenkins requires the installation of OpenJDK 8 on your system. The apt repositories can directly access OpenJDK 8. The installation of OpenJDK from standard repositories is recommended. Open and enter the following in the terminal window: $ sudo apt update  $ sudo apt install openjdk-8-jdk The download and installation will be requested. Press the "Y" button and press the Enter button to finish the process. Java 8 will be installed on your system. We are ready to download Jenkins package now as we have our requirements ready! Step 2: Install Jenkins The default Ubuntu packages for Jenkins are always behind the current version of the project itself. You may use the project-maintained packages to install Jenkins to take advantage of the newest patches and features. 1. add the framework repository key: $ wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add  The device returns OK when the key is inserted. 2. Next, link the repository of Debian packages to the sources.list of the server: $ sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list' 3. When both are in place, upgrade to apt to use the new repository: $ sudo apt update 4. Install Jenkins: $ sudo apt install jenkins Now we're going to start the Jenkins server, as Jenkins and its dependencies are in place. Step 3: Start Jenkins 1. You can start Jenkins using systemctl: $ sudo systemctl start jenkins 2. As systemctl does not display performance, you can use the status command to check that Jenkins has successfully launched: $ sudo systemctl status jenkinsIf all went well, the start of the performance should demonstrate that the service is active and ready to boot: Output: jenkins.service - LSB: Start Jenkins at boot time     Loaded: loaded (/etc/init.d/jenkins; generated)     Active: active (exited) since Sat 2021-04-17 00:34:17 IST; 26s ago       Docs: man:systemd-sysv-generator(8)    Process: 17609 ExecStart=/etc/init.d/jenkins start (code=exited, status=0/SUCC As Jenkins is running, so adjust the firewall rules to complete our further setup of Jenkins from the web browser. Step 4: Opening the Firewall 1. Jenkins works by default on port 8080, so let's open the port with ufw: $ sudo ufw allow 8080  2. Check ufw’s status: $ sudo ufw status You will see that traffic from anywhere is permitted to port 8080. Output: Status: active  To                         Action      From  --                         ------      ----  8000                       ALLOW       Anywhere                    CUPS                       ALLOW       Anywhere                    27017                      ALLOW       Anywhere                    27017                      ALLOW       192.168.1.10                8080                       ALLOW       Anywhere                    8000 (v6)                  ALLOW       Anywhere (v6)               CUPS (v6)                  ALLOW       Anywhere (v6)               27017 (v6)                 ALLOW       Anywhere (v6)               8080 (v6)                  ALLOW       Anywhere (v6) 3. If the firewall is inactive, the following commands will allow OpenSSH and turn it back on: $ sudo ufw allow OpenSSH  $ sudo ufw enable We can finish the initial configuration with Jenkins installed and our firewall configured. Note: If you decide to continue to use Jenkins, use a Nginx Reverse Proxy at Ubuntu 18.04 to configure Jenkins with SSL when your exploration has been completed to protect your passwords and any sensitive system or product information sent between the machine and the server in plain text. Step 5: Setting Up Jenkins 1. To set up installation, visit Jenkins on its default 8080 port with your server domain name or IP address: http://your_server_ip_or_domain:8080 You should see the Unlock Jenkins screen, which displays the initial password's location:2. You can use the cat command to display the password: $ sudo cat /var/lib/jenkins/secrets/initialAdminPassword 3. Copy the alphanumeric terminal 32-character password and paste into the Administrator Password field, then click Continue. Output: 0aaaf00d9afe48e5b7f2a494d1881326 The following screen shows the ability to install or select certain plugins: 4. We will click on the option to install proposed plugins to start the installation process immediately. 5. When the installation is done, the first administrative user will be prompted. You can save this step and use your initial password to continue as an Admin. However, we will take some time to create the user. The Jenkins default server is NOT encrypted to prevent data from being protected. Use the Nginx Reverse Proxy on Ubuntu 18.04 to configure Jenkins with SSL. This protects the information of users and builds transmitted through the web interface. 6. You will see a configuration instance page, which asks you to confirm your Jenkins instance's URL of choice. Confirm either your server's domain name or the IP address of your server.  7. Click Save and Finish once you have confirmed the relevant information. A confirmation page will show you that "Jenkins is ready!"  Hit Start using Jenkins button and it will take you to the Jenkins dashboard.  Congratulations! You have completed the installation of Jenkins. Step 6: Creation of New Build Jobs in Jenkins: The freestyle job is a highly versatile and user-friendly choice. It's easy to set up and many of its options appear in many other build jobs. For all projects, you can use it. Follow the following steps: You have to login to your Jenkins Dashboard by visiting2) Create New item: Click on the New Item on the left-hand side of the dashboard.3) Fill the project description: You can enter the job details as per your need.4) Source Code Management: Under source code management, enter the repository URL.You can also use a Local repository. 5) Build Environment: Now in the Build section, Click on the “Add build Setup” Select "Execute Windows batch command".Now, add the java commands. In this article, we have used javac HelloWorld.java and java HelloWorld.   6) Save the project: Click Apply and save the project. 7) Build Source Code and check its status: Click on “Build Now” on the left-hand side of the screen to create the source code. 8) Console Output: Select the build number and click on “Console Output” to check the status of the build run. When it shows success, it means that we have successfully run the HelloWorld program from the cGitHub Repository. In case of failure, you can check the job logs by clicking on failure icon and debug the root cause.Uninstall Jenkins Follow the instructions to uninstall Jenkins: $ sudo apt-get remove jenkins Uninstall Jenkins: $ sudo apt-get remove --auto-remove jenkins Purging your data: $ sudo apt-get purge jenkins or you can use: $ sudo apt-get purge --auto-remove jenkins Conclusion: Installing Jenkins on Ubuntu is really that easy. Jenkins has a low learning curve and so you can start to work with it as quickly as possible. In the above article we have learned how to install Jenkins in an Ubuntu machine where all the steps are explained clearly. In case you want to learn more about the core concepts of Jenkins Jobs, Pipelines, Distributed System, Plugins, and how to use Jenkins in depth you can enroll for our course Jenkins Certification Course. 
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How To Install Jenkins on Ubuntu

Jenkins is a Java-built open-source Continuous In... Read More

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