#SystemAdmin

[insystechnologies]

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[centizen]

A Better Understanding of DevOps Services

A better understanding of DevOps Services can be simply put as a combination of Development and Operational Skills. Basically, to overcome the long, time-consuming process of traditional waterfall models, DevOps are preferred. Nowadays many companies are interested to employ engineers who are skilled at DevOps. DevOps integrates development and operation i.e. it takes both software developers and IT sector. DevOps engineers must play nice as they have to collaborate, and handle an automated infrastructure, workflow and continuously measuring application performance.

DevOps service phases

DevOps engineering consists of three phases:

1. Automated testing

2. Integration

3. Delivery

The lifecycle of DevOps

DevOps services mainly focus on planning, coding, building, and testing as the development part. Added is the operational part that includes releasing, deployment, operation, and monitoring. The development and operational parts make up the life cycle.

Team members of DevOps

In business enterprises, DevOps service engineers create and deliver software. The main aim of this team, in an enterprise environment, is to develop a quality product without the traditional time consumed.

The DevOps service employs an automated architecture which comes with a set of rules, a person who has worked as a front runner for the organization will lead the team based on the company’s beliefs and values.

A senior DevOps engineer is expected the following skills.

Software testing:

The responsibility increases along with coding new requirements to test, deploy and monitor the entire process as well.

Experience assurance:

The person follows the customer’s idea to develop the end product.

Security engineer:

During the development phase the security engineering tools to be used in the security requirements.

On-time deployment:

The DevOps Service engineer should ensure that the product is compatible and running at the client’s end.

Performance engineer:

Ensures that the product functions properly.

Release engineer:

The role of the release engineer is to address the management and coordination of the product from development through production. Release ensures the coordination, integration, flow of development, testing, and deployment to support continuous delivery and maintenance of the end-end applications.

System admin:

Traditionally system admin focuses only on the server running. But DevOps Services handles the open-source pros, passionate towards technology, and hands-on with development platforms and tools. They maintain the networks, servers, and databases and even support them.

Most popular DevOps tools

Git is a version control system tool

Jenkins, Selenium are Continuous Integration Testing tools that use predefined frameworks.

Puppet, Chef, Ansible are configuration management and deployment tools

Nagios is a Continuous monitoring tool

Docker is a container concept tool.

Usage of the DevOps tools

Git tool is a version control system tool that is used to develop the source code by developers and sent to the Git repository and we have to edit the code in repository.

Jenkins is a powerful application tool that allows the code from the repository using the git plugin and builds it using tools like Ant or Maven.

Selenium is an open-source automation tool. The Selenium tool performs regression and functional testing. Selenium is used for testing the code from Jenkins.

Puppet is a configuration management and deploys the testing environment.

Once the code is tested, Jenkins sends it for deployment on the production server.

Then the completion of Jenkins goes to monitored by tools Nagios.

After the monitoring process Docker containers provides a testing environment to test the build features.

Basic technical knowledge for DevOps recruiters

The DevOps service recruiters should follow basic methodologies such as agile, continuous delivery, continuous integration, microservices, test-driven development, and infrastructure as a code.

They must know the basic scripting languages such as Bash, Python, Ruby, Perl, and PHP.

The recruiters must know the infrastructure automation codes such as Puppet, Chef, Ansible, Salt, Terraform, Cloud Formation, and Source code management such as Git, Mercurial, and Subversion.

The developers should study cloud services such as AWS, Azure, Google Cloud, and Open Stack.

Another skill is orchestration. In programming, to manage the interconnections and interactions among the private and public clouds.

The next one is containers, a method of OS virtualization that allows you to run an application and its dependents in resource-isolated processes. it includes LXD, and Docker.

The recruiters should be able to manage multiple projects, simultaneously.

They must know the usage of tools for continuous integration and delivery. Such as Cruise control, Jenkins, Bamboo, Travis CI, GOCD, Team Foundation server, Team City, Circle CI

Testing tools such as Test Complete, Testing Whiz, Serverspec, Testinfra, In Spec, Customer Driven Contracts.

Recruiters must know the monitoring tools such as Prometheus, Nagios, Icinga, Zabbix, Splunk, ELK Stack, collected, CloudWatch, Open Zipkin.

Conclusion

In this article, we discuss the basics of DevOps Services. It includes the phases, the roles & finally, the lifecycle and usage of the tools and skills for recruiters.

[suyashjain]

DKIM is email-authentication technique similar to SPF. DKIM allows the receiver to check that an email was indeed sent and authorized by the owner of that domain. This is done by adding a digital DKIM signature on emails. A DKIM signature is a header that is added to a message and secured with encryption.

Authenticating legitimate sending sources with DKIM gives the receiver (receiving systems) information on how trustworthy the origin of an email is, and it can significantly improve the overall deliverability of an email channel.


In practice, DKIM on its own is not enough to fully protect an email channel. The email validation system DMARC is often mandatory and required for compliance as it creates a link between SPF and DKIM by validating whether a sending source has been authenticated with either SPF or DKIM.

Furthermore, DMARC allows organizations to instruct email services like Gmail, Hotmail and others to reject all emails that are not aligned with SPF and or DKIM.

[gsoftcloud]

Deploying applications to VMs demands a streamlined approach. You need to consider several factors and follow pre-defined procedures to get the best results. Check out this blog penned by our Chief Cloud Officer, Sibin Vincent, where he outlines the key steps to consider before deploying applications to VMs.

#virtualMachines #deploymenttips #itinfrastructure #cloudcomputing #techsolutions #systemadmin #itbestpractices #virtualizationstrategy #datacentermanagement #digitaltransformation

[thetechijack]

How to Block USB Drives with Group Policy | Server 2025

[taciturntraveller]

Hi! For Rowan:

😶‍🌫️ FACE IN CLOUDS — is there something you're hiding from the people you love? if so, how urgent is it for them to hear it? what's holding you back from sharing it?

☀️ SUN — would you describe yourself as more of an introvert or extrovert, or are you somewhere in between? how come?

🪽 WING — if you could choose to have one superpower for a day, what would it be and why? what would you do with it?

✍️ WRITING HAND — what is one thing you wish you were better at? this can be a tactical skill, social skill, hobby, etc.

Thank you Clauds!! Under a cut for length <3

😶‍🌫️ FACE IN CLOUDS — is there something you're hiding from the people you love? if so, how urgent is it for them to hear it? what's holding you back from sharing it?

[Message From: SilentProtagonist] My feelings, most of the time. I just don't like feeling like a bother. I want to be useful. I want to help others. I don't want people to feel like they constantly have to be checking on me.

[Message From: SilentProtagonist] And it's not 'urgent' for them to hear it. Although, I know bottling things up isn't a good idea... I just need to find a balance, is all.

☀️ SUN — would you describe yourself as more of an introvert or extrovert, or are you somewhere in between? how come?

[Message From: SilentProtagonist] Introvert, 100%. I am terrible at social interaction :P But I'm improving! ... Slowly 😅 I guess I just got used to doing things myself, so reaching out to others is proving to be kind of hard. Fortunately I got involved with a team that is at least half extrovert, so there's examples to learn from!

🪽 WING — if you could choose to have one superpower for a day, what would it be and why? what would you do with it?

[Message From: SilentProtagonist] You mean aside from the superpowers I already have? :P

[Message From: SilentProtagonist] As much as I can travel pretty fast when I'm moving through cables and networks... teleportation would actually be pretty fun for me. I'd like to do that. Although I'd probably use it for nefarious purposes... like fast food runs. And theft.

[Message From: SystemAdmin-FRIDAY] The Avengers would like to specify, for legal reasons, that this is a joke and should not be taken literally.

[Message From: SilentProtagonist] Spoilsport :P

✍️ WRITING HAND — what is one thing you wish you were better at? this can be a tactical skill, social skill, hobby, etc.

[Message From: SilentProtagonist] Honestly, I'm a pretty quick learner when it comes to most things. But as I've said previously... I would like to be better at basic social interaction...

[Message From: SilentProtagonist] I'd also like to be better at whistling. I know it sounds lame, but I just CANNOT do it for some reason. It makes me a little jealous.

[globalresourcesvn]

Hướng dẫn sử dụng lệnh lsof trong Linux

Hướng dẫn sử dụng lệnh lsof trong Linux #lsof #Linux #commandline #systemAdmin #networking #Troubleshooting Lệnh lsof (List Open Files) là một công cụ dòng lệnh mạnh mẽ trong hệ điều hành Linux, cho phép bạn liệt kê tất cả các tập tin đang mở bởi các tiến trình đang chạy. Hiểu và sử dụng thành thạo lsof là kỹ năng cần thiết cho bất kỳ quản trị viên hệ thống Linux nào, giúp ích rất nhiều trong…

[markgo7]

Click on JobsHorn Link to Apply: https://jobshorn.com/job/enterprise-systems-administrator/7097

Jobshorn Register/Referral: https://jobshorn.com/employer/register?refcode=JHEMPPUBID10083

🔹 Job Title: Enterprise Systems Admin 🔹 Location: Denver, CO, (Remote-Locals Only) 🔹 Duration: 3 Months 🔹 Interview Type: Skype or Phone 🔹 Job Type: #C2C, #W2, #1099 🔹 Experience: 10+ years

Contact Us: 📧 Email: mark@sohanit.com |📞 Phone: +1 470-410-5352

Explore all job openings at SohanIT Inc: https://jobshorn.com/company/sohanit-inc/jobs

#sohanit#jobshorn#hiring#usopening#remotejob#systemadmin#enterprisesystemadministration#linux#windows#unix#itil#lan#aws#comptiasecurityplus

[zealousweb]

We had cracked a joke, but our System Admin fixed it! 👨‍💻 . We want to crack another one, but we’re certain our System Admin will fix that too! 😃 . . . #systemadmin #systemadministrator #systemadministration #systemadmins #systemadministrators #systemadministratorappreciationday #systemadminstaff #sysadminday #sysadmins #sysadmin #sysadminday2020 #ihavejokes #ihavejoke #ihavejokeon #technology #informationsecurity #ZealousWeb

[mgcspace]

How to save your #Linux #Server from Brute force attacks easily using #Fail2ban

Read at : https://mgcspace.com/content/security/how-to-install-fail2ban-in-ubuntu-debian-for-brute-force-protection-in-linux/

[insystechnologies]

🖥️ Become a Certified Red Hat Linux Administrator!

📡 Master essential Linux system administration skills with Red Hat-certified training from Insys Technologies.

💡 Topics Covered: 🔹 User Management 🔹 System Configuration 🔹 Security & Networking 🔹 RHCSA/RHCE Exam Preparation

🎯 Perfect for IT professionals aiming to advance in system administration.

📩 Join us today! 📧 info@insystechnologies.in 📱 +91 7045518424 | +91 7021019517

[cooltimmillerblog]

A multinational company has selected OM Plus Delivery Manager (DM) as their output management system (OMS), and used Oracle EBS as their core ERP suite.

[justintime2010]

My handsome husband doing what he does best. #smarthome #computer#tech#geeklife#samsung #life#cybersecurity #systemadmin (at Yard House) https://www.instagram.com/p/CMXjmdrr6QO/?igshid=1bu1xdu4v01qa

[gsoftcloud]

Steps to Consider before Deploying Applications to VMs.

Virtual machines, or VMs, are an integral part of the cloud computing landscape.  

With VMs, you can abstract away resources from a physical machine and create an isolated computing environment. You can use this environment to test applications, backing up data, and more.  

However, deploying applications to VMs demands a streamlined approach. You need to consider several factors and follow pre-defined procedures to get the best-intended results. Check out this blog penned by our Chief Cloud Officer, @Sibin Vincent, where he outlines the key steps to consider before deploying applications to VMs.  

[zanerosetta]

Well... isn't this magical... 🙄 and on about 20 PCs at work this weekend. At least it's the weekend... 😵 #sarcasm #microsoft #windows10 #windows #wsus #windowsupdate #wsusserver #sysadmin #itlife #systemadmin #bluescreenofwaiting #pclife #ithelps #desktopadmin #helpdesk #techsupport (at Sydney, Australia)