ic_agile_128ic_business_128ic_agile_white_128ic_banknote_smile_128ic_business_128ic_business_128ic_checkmark_128ic_client_team_manager_128ic_code_file_128ic_code_files_128ic_corporate_cloud_platforms_128ic_crossplatform_apps_128ic_dedicated_team_128ic_developer_128ic_development_team_128ic_enterprise_128ic_faster_timeframe_128ic_fixed_price_128ic_graph_down_128ic_graph_down_128ic_hourly_128ic_hourly_white_128ic_information_finder_128ic_junior_developer_128ic_managed_team_128ic_message_128ic_mobile_app_startups_128ic_mobile_development_128ic_mobile_development_up_128ic_mobile_devices_128ic_multiplatform_128ic_multiplatform_white_128ic_pricetag_128ic_project_checklist_128ic_project_management_128ic_project_management_team_128ic_research_and_development_team_128ic_scalable_team_128ic_senior_developer_128ic_smaller_codebase_128ic_smaller_price_128ic_startup_128ic_team_manager_128ic_three_times_faster_128Arrow_Dropdownic_001_google+_16ic_002_xing_16Group 2ic_003_facebook_16ic_004_linkedIn_16Groupic_005_message_16ic_006_upload_16ic_007_remove_16ic_008_email_16ic_009_attachment_16ic_010_file_16ic_011_name_16ic_012_arrow_left_16ic_013_arrow_right_16ic_014_arrow_down_16ic_015_arrow_up_16ic_016_dropdown_arrow_down_16ic_016_dropdown_arrow_leftic_016_dropdown_arrow_rightic_017_K&C_dropdown_arrow_up_16ic_018_language_16ic_019_Quote_16ic_020_+_16ic_021_=_16ic_022_phone_16ic_023_twitter_16ic_024_position_16ic_025_company_16ic_026_search_16ic_027_mobile_16ic_028_fax_16ic_029_location_16ic_030_enlarge_16ic_031_downscale_16ic_032_contactic_download_normal_16pxic_033_skype_16ic_006_download_16 copySearchGroup 26Rss_font_awesomeK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxK&C_Icons_32pxConsul_VerticalLogo_FullColorPacker_VerticalLogo_FullColorTerraform_VerticalLogo_FullColorVault_VerticalLogo_FullColorethereum_black_64ic_Interest_based_64ic_acrivate_card_64ic_api_client_64ic_application_architecture_64ic_application_architecture_ white_64ic_application_development_user_64ic_application_development_user_64ic_arrow_down_64ic_automated_backups_64ic_automated_infrastructure_provisioning_64ic_automated_infrastructure_provisioning_white_64ic_automated_storage_64ic_automated_storage_64ic_automation_64ic_microservice_architecture_64ic_avaliability_across_the_world_64ic_avaliability_across_the_world_white_64ic_blockchain_64ic_blockchain_white_64ic_brackets_64ic_brackets_64ic_build_64ic_build_64ic_build_64ic_business_64ic_business_partnership_64ic_business_partnership_white_64ic_business_64ic_calculator_64ic_calendar_64ic_car_rent_64ic_card_renewal_64ic_chat_64ic_chat_bubbles_64ic_chat_bubbles_64ic_chat_white_64ic_checklist_64ic_checkmark_64ic_blockchain_64ic_smart_development_64ic_blockchain_consulting_64ic_checkmark_white_64ic_clock_64ic_clock_white_64ic_cloud_media_64ic_cloud_solutionsic_cloud_solutions_whiteic_cluster_64ic_cluster_white_64ic_code_base_optimization_64ic_coding_64ic_coding_white_64ic_commenting_widget_64ic_commenting_widget_64ic_containers_64ic_containers_white_64ic_continious_64ic_continious_delivery_64ic_continious_delivery_white_64ic_continious_release_64ic_continious_release_white_64ic_continious_white_64ic_cost_saving_64ic_cost_saving_white_64ic_cpu_load_64ic_credit_card_64ic_crossplatform_app_development_64ic_crossplatform_app_development_white_64ic_custom_crm_64ic_custom_crm_64ic_independence_consulring_64ic_database_calls_64ic_database_calls_white_64ic_dedicated_teams_64ic_dedicated_teams_64ic_desktop_application_user_64ic_desktop_application_user_64ic_desktop_code_64ic_desktop_code_white_64ic_developer_64ic_developer_white_64ic_development_64ic_devops_64ic_devops_64ic_documents_64ic_documents_graph_64ic_documents_graph_white_64ic_documents_white_64ic_download_presentation_64ic_education_64ic_email_open_64ic_email_open_white_64ic_environment_healthcheckethereum_white_64ic_euro_64ic_euro_white_64ic_failure_solved_64ic_gdpr_64ic_globe_outlines_64ic_good_quality_64ic_high_load_websites_64ic_high_load_websites_white_64ic_hotel_booking_64ic_inability_64ic_inability_white_64ic_increase_64ic_increase_white_64ic_increasing_team_64ic_independence_64ic_integration_64ic_it_outsourcing_64ic_it_outsourcing_64ic_knowledge_sharing_64ic_mobile_devices_64ic_laptop_user_64ic_laptop_user_white_64ic_launch_64ic_launch_white_64ic_learning_64ic_learning_two_white_64ic_lighthouse_64ic_link_64ic_load_balancer_64ic_load_balancer_64ic_load_card_64ic_lock_64ic_lock_white_64ic_low_cost_64ic_low_load_websites_64ic_maintenance_tools_64ic_maintenance_tools_white_64ic_media_player_64ic_media_player_white_64ic_messaging_platforms_64ic_microservice_architecture_64ic_microservices_64ic_microservices_64ic_mobile_app_64ic_mobile_app_64ic_mobile_content_64ic_mobile_development_64ic_mobile_development_white_64ic_mobile_devices_64ic_mobile_devices_white_64ic_mobile_payments_64ic_mobile_social_media_applications_64ic_mobile_workflows_64ic_money_transfers_64ic_multimedia_sharing_64ic_multimedia_sharing_white_64ic_my_garage_64ic_no_access_64ic_no_access_white_64ic_no_oldschool_64ic_online_marketplaces_64ic_online_marketplaces_white_64ic_online_trading_64ic_online_trading_64ic_pair_device_64ic_parallels_64ic_parallels_white_64ic_passcode_64ic_payment_systems_64ic_performance_64ic_performance_issues_64ic_performance_issues_white_64ic_performance_white_64ic_plane_64ic_plane_white_64ic_plus_64ic_plus_64ic_pricetags_64ic_pricetags_64ic_product_64ic_product_search_64ic_product_white_64ic_productivity_tools_64ic_productivity_tools_64ic_project_delivery_64ic_project_delivery_white_64ic_project_management_64ic_project_management_collaboration_64ic_project_management_team_64ic_project_management_team_white_64ic_project_risks_reduced_64ic_quality_mark_64ic_quality_mark_64ic_quality_mark_white_64ic_question_64ic_react_native_64ic_response_time_64ic_response_time_white_64ic_rest_api_64ic_retail_64ic_transparency_consulting_64ic_scale_up_64ic_scale_up_white_64ic_security_64ic_security_64ic_self_healing_64ic_self_healing_64 copyic_send_money_64ic_server_64ic_server_white_64ic_shopping_64ic_shopping_white_64ic_sleep_mode_64ic_small_is_beautiful_64ic_smaller_price_64ic_social_benefits_64ic_social_connections_64ic_socket_64Group 20ic_spare_parts_for_cars_64ic_spare_parts_for_cars_white_64ic_speedometer_64ic_performance_consulting_64ic_speedometer_white_64ic_startup_64ic_startup_white _64ic_target_64ic_team_64ic_testing_64ic_testing_checklist_64ic_testing_checklist_white_64ic_testing_white_64ic_three_times_faster_64ic_touch_64ic_touch_id_64ic_touch_white_64ic_transparency_64ic_ui_design_desktop_64ic_ui_design_mobile_64ic_ui_design_mobile_white_64ic_umbrella_64ic_umbrella_64ic_umbrella_white_64ic_up_and_down_scaling_64ic_up_and_down_scaling_64ic_users_64ic_users_white_64ic_ux_design_64ic_ux_design_desktop_64ic_ux_design_64ic_ux_design_white_64ic_vehicle_64ic_web_based_search_64ic_web_based_search_white_64ic_web_browser_code_64ic_web_browser_developer_mode_64ic_web_browser_user_64ic_web_development_64ic_web_development_white_64ic_web_portals_64ic_web_portals_64ic_web_user_64ic_web_user_white64ic_workflow_64ic_workflow_steps_64ic_workflow_steps_white_64ic_workflow_white_64ic_working_environment_64solidity_blackGroup 19

DevOps with Puppet: Tips on Setting it up for Configuring Servers

Today I will describe briefly how Puppet works, as well as basic configuration and installation of the server and two clients.


Puppet is an open-source configuration management tool that is used for software update and configuration on client servers. With Puppet, going to the servers and updating them manually will no longer be needed, as all you’ll have to do is monitor if the servers are operating correctly.

How we apply Puppet

So, let's begin. We have 3 servers with OS installed. We’re typically using CentOS 6.5.

Installing the server:

Hostname «puppets1»


Connect the repository and update the system. If the repository is outdated, it will update

rpm -ivh http://yum.puppetlabs.com/el/6/products/i386/puppetlabs-release-6-7.noarch.rpm
yum update -y

Set up the puppet server

yum install -y puppet-server

Configuration files are called manifests. They can be found in the directory /etc/puppet/manifests


Standard Manifest - site.pp. Puppet searches for it in the first place.

The basic element of the manifest is a resource. A resource is a file, cron task, package, or user service.


Let’s make changes to the file /etc/puppet/manifests/site.pp

file { "/etc/passwd":
owner => "root",
group => "bin",
mode => 644,
}

This resource launches verification of the /etc/passwd file owner, and if it differs from the root, Puppet sets the root user as the owner of the file. The same occurs with the group and permissions.


(node) is the most important element in the configuration file. In a nutshell, it’s the type of the machine where puppet configuration will be deployed.


Here’s an example of NGINX manifest for node server{n} Nginx.pp:

class nginx {
  package { 'nginx':
    ensure => latest
  }
  service { 'nginx':
    ensure => running,
    enable => true,
    require => Package['nginx']
  }
}
node /^server(\d+)$/ {
  include nginx
}

Run puppetmaster:

/etc/init.d/puppetmaster start

Installing and configuring the Puppet client

Hostname «puppet c1»


Set up the repository:

rpm -ivh http://yum.puppetlabs.com/el/6/products/i386/puppetlabs-release-6-7.noarch.rpm
yum update -y

Set up the puppet client:

yum install puppet
chkconfig puppet on
service puppet start

Run the command on the client:

puppet agent --server puppets1 --waitforcert 60 --test

Add the node on the server:

puppet cert --list
puppet cert --sign puppetc1

Check if our puppet works on the client:

chmod 777 /etc/passwd
puppet agent --server puppets1 --waitforcert 60 --test

Info: Retrieving pluginfacts

Info: Retrieving plugin

Info: Caching catalog for puppetc2.ln.ua

Info: Applying configuration version ‘1404892414’

Notice: /Stage[main]/Main/File[/etc/passwd]/mode: mode changed ‘0777’ to ‘0644’

Notice: Finished catalog run in 6.15 seconds

Next, let’s edit the site.pp on the server:

node 'puppetc1' {
        include nmap
        include nginx
}
 
 
class nmap {
        package { "nmap":
                ensure => "latest",
        }
}
import '/etc/puppet/manifests/nginx.pp'

On the client, run the command:

puppet agent --server puppets1 --waitforcert 60 --test

Info: Retrieving pluginfacts

Info: Retrieving plugin

Info: Caching catalog for puppetc2.ln.ua

Info: Applying configuration version ‘1404892414’

Notice: /Stage[main]/Nmap/Package[nmap]/ensure: created

Notice: /Stage[main]/Nginx/Package[nginx]/ensure: created

Notice: /Stage[main]/Nginx/Service[nginx]/ensure: ensure changed ‘stopped’ to ‘running’

Info: /Stage[main]/Nginx/Service[nginx]: Unscheduling refresh on Service[nginx] Notice: Finished catalog run in 34.49 seconds

tail /var/log/yum.log

Jul 09 12:47:53 Installed: 2:nmap-5.51-3.el6.x86_64

Jul 09 12:48:07 Installed: nginx-1.0.15-5.el6.x86_64


As we can see, we have two packages set up on the client that we have registered in site.pp.


Now, let’s add a couple of lines in the config file so that we don’t have to run puppet manually:

server=puppets1
node_name=puppetc1
cerntname=puppetc1

Run puppet:

/etc/init.d/puppet start

By default, there is a check with the master every 30 minutes.

Writing manifests and classes

On the server, edit manifests/site.pp

$emailaddress="reports@example.com"
 
import '/etc/puppet/classes/*-class.pp'
import "/etc/puppet/nodes/*.pp"

classes directory - for the location of classes files

nodes directory - for settings files of our server clients

$emailaddress - set the values to send reports by email


Class basic-class.pp: 

class basic-class{
 
        package { "mailx":
                ensure => "latest",
        }
 
	file {'motd':
                ensure  => file,
                path    => '/etc/motd',
                mode    => 0644,
                content => "WARRNING: Welcome to ${fqdn} ( ${operatingsystem} ${operatingsystemrelease} )
          It`s private server. Your login will be registered!
          Have a nice work!
        ",
	}
}

For basic settings, we need the latest version of the mailx package, which we indicate by ensure => latest  We also make changes to the motd file for the salutation after a successful login to the system. Puppet already has in its arsenal such variables as: 


${Fqdn} - Fully Qualified Domain Name of your host

${Operatingsystem} - Defines the version of your operating system. In my case, it’s CentOS

${Operatingsystemrelease} - Defines the version of your operating system. At the moment of finishing this article, I had a version 6.6 system installed.


The next class software-class.pp is required for installation and removal of the needed and not needed packages:

class software {
 
$removepackeges = [ "sendmail", "exim" ]
$installpackeges = [ "nmap", "iptraf", "postfix", "mc", "nano", "sudo" ]
 
 
        package {$removepackeges : ensure => purged, }
        package { $installpackeges :   ensure => "installed", }
}

$Removepackeges - lists the packages for removal

$Installpackeges - lists the packages to be installed


Now let’s view the ssh-config-class.pp class 

class sshdconfig {
        package { "openssh-server":
                ensure => "latest",
                allow_virtual => true,
        }
 
	service { "sshd":
                ensure  => "running",
                enable  => "true",
                require => Package["openssh-server"],
        }
 
	file { "/etc/ssh/sshrc" :
                mode    => 755,
                owner   => "root",
                group   => "root",
                require => Package["openssh-server"],
                source => "puppet:///files/ssh/sshrc",
        }
 
	file { "/etc/ssh/ssh_banner":
                mode    => 644,
                owner   => "root",
                group   => "root",
                require => Package["openssh-server"],
                source => "puppet:///files/ssh/ssh_banner",
        }
 
	file { "/etc/ssh/sshd_config":
                notify  => Service["sshd"],  # this sets up the relationship
                mode    => 600,
                owner   => "root",
                group   => "root",
                require => Package["openssh-server"],
                source => "puppet:///files/ssh/sshd_config",
        }
 
}

In this class, we will:


- Install openssh-server in the package section

- Keep running sshd service that requires an installed openssh-server package

- Copy 3 files from the /files/ssh directory with settings for our ssh server


Now, let’s see the crontab-class.pp class  

class crontab-basic{
 
        package { "cronie":
                ensure => "latest",
        }
 
	file { "/opt/bin/scripts/puppetrun.sh" :
                mode    => 755,
                owner   => "root",
                group   => "root",
                source => "puppet:///files/puppet-agent/puppetrun.sh",
        }
 
	cron { Puppet:
                command => "bash /opt/bin/scripts/puppetrun.sh",
                user    => root,
                hour    => 22,
                minute  => 30,
                environment  => ['PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin', "MAILTO=$emailaddress"],
        }
 
}

In this class, we:


- Set up cronnie if it wasn’t set up yet somehow  

- Download and copy the puppetrun.sh file from the file/puppetagent directory to /opt/bin/scripts directory on our client

- Specify which user will have our script running and when. Also, add the PATH and MAILTO values for cron


Now let’s proceed with the setup of the manifests for our servers. Create nodes/hardnodes.pp file

node /^puppetc\d+$/ {
        include basic-class
        include software
        include sshdconfig
        include crontab-basic
}

Here we have indicated:


* For all servers with the hostname puppetc {1,2,3,4,5 ......} the above-described classes will be applied.


That’s all for now. Stay tuned, I will have more tips for you soon!


SHARE WITH FRIENDS
You might find this interesting
Our cases
Bosch Classic Cars - Digital Engagement Platform for 19K Vintage Car Owners
Our cases
Liferay Portal Performance Tuning Services for a Major Online Gaming Software Supplier
Web
Three Authentication Approaches to Keep Your Clients Safe
Our cases
How to apply React Native while developing heavy cross-platform mobile apps
E-book
How to Secure Web Product Development — FREE eBook
E-book
Digital Transformation: the Philosopher’s Stone of Economic Growth
Web
Agile and DevOps are Key Drivers of Digital Transformation
Web,Other
GoLang: Features, Pros and Cons
Our cases
Reference: Major producer of auto electronics and spare parts
Outsourcing,Other
Hybrid, SaaS+PaaS, IoT: Cloud Trends to Catch in 2018
Web,Outsourcing,Other
Angular vs. React vs. Vue – Let the Fight Start!
Web,Outsourcing,Other
JS Frameworks: The Trendiest Frameworks You Should Know
Our cases
Micro-service Architecture for New AngularJS Application - Case Study
Mobile
Native or Hybrid Apps: A Quick Comparison
DevOps
Installation and setting up: Nextcloud as a local network storage on CentOS7
Web
Centralized Logging with Logstash, Elasticsearch & Kibana
Web
Plan to Succeed: 4 Tips for Building Scalable Software
Web
Debunking imaginary shortcomings of cross-platform frameworks
Our cases
Portal Performance Tuning For Major German Travel Agency
Web
Technologies that Foster Digital Transformation
Web,Other
How to Make Your Web Solution Rock: 7 Areas to Check
Web
4 Time-Saving Ways to Test Your Cross Platform Mobile App
Web,Outsourcing,Other
Angular 5.0.0 – A Better Version of Itself
E-book
Top Tools for Cost-Effective Web Development — eBook
Web
Cloud Deployment: Overview of Options
Web
How to Motivate Your Dedicated Team to Work with Legacy Projects
Web,Our cases
White Label: A Customized Software Solution from a Business and Tech Perspective
Web
Cost efficient technologies
Web
Scaling software solutions - how it works
DevOps,Outsourcing,Other
How to setup Kubernetes cluster on AWS
DevOps
Docker: Virtualize Your Development Environment Right
Web
When Microservices Help Make Future-Ready Products
Outsourcing,Other
How to Ramp up Your Team Wisely
DevOps
How We Manage Our Infrastructure with Chef
Our cases
Reformation of Deployment Cycle for Bosch Classic Cars Portal
Our cases
Fast and Lightweight Mobile Application based on PhoneGap/ Cordova
Our cases
Drivelog.de — Web Marketplace for Car Owners and Service Providers
DevOps
How We Use Ansіble for Configuration of Our Environments
Web
Angular 2.0 vs Angular 1.4. What fits you best?
Other
Big Data: Why Your Business Needs it ASAP
Web,Outsourcing,Other
How a Company Can Benefit from White Label: K&C experience
DevOps
How to Build a Rancher & Docker Based Cloud
DevOps
Setting Up: Traefik Balancer In Rancher Cloud
E-book
Determining Approaches to Mobile App Development
Web,Other
Dedicated Teams for Web Development: Choice Criteria to be Checked
Web
Angular 4 vs React – what to choose in 2017
DevOps,Outsourcing,Other
ROCKET.CHAT as an internal messaging system and helpdesk platform
Web
Monolith, Microservices, Serverless... Are We in the Middle of the Way?
Web
JQuery vs. Angular: Ad Astra per Aspera
DevOps
How to start services on Linux
Web
Advanced Technologies for Marketing Automation
DevOps,Outsourcing
AWS DevOps: A New Way to Run Business
Web,Outsourcing
Why It’s Better to Use Vue.js than Angular and React in 2018
Web,Outsourcing
Migration from Angular 1 to Angular 5
DevOps,Outsourcing
Information Security with AWS DevOps
Other
Europe’s Big Payments Directive PSD2
Our cases
The Platform Providing Event Organization
Our cases
VAIX - Fault tolerant infrastructure for 24/7 high-load machine learning service
Web,DevOps,Our cases
Our case: Marketplace for gaming goods
Web,Outsourcing
Web App Security 101: Keep Calm and Do Threat Modeling
Web,Mobile,Outsourcing,Other
All You Wanted to Know About Chatbot Platforms
Web
What's New in React 16.3.0 - 16.4.2: Features Overview
Other
GDPR: Smart Practices
Web
Fintech Apps - A Lucrative Solution for Customers and Businesses Alike
Other
Swimming with Sharks
Web
Node.js 10.0.0: Everyone’s Favorite Got Even Better
DevOps,Outsourcing
Rancher 2.0: A Quick Look at the New Version
Our cases
How to Save Money Using Your Own Infrastructure
Other
I’m Tired of Blockchain Hype, Are You?
Web,Other
Progressive Web Apps and Why You May Need Them
Other
Don’t Treat Me Like a Fool: The worst thing you can do for your business
Web
Web App Security 101: How to Defend Against a Brute Force Attack
Other
How to Convert Your Business to an Amazon-Style Market Leader
Web,Outsourcing,Other
JavaScript & WebSockets: How to Build Real-Time Applications
Other
Culture eats technology for breakfast
Other
How to Control Agile Development: Progress and Costs
Marketing
Аudience-based Marketing
Other,Marketing
How to Become a Leader in Your Market
Web,Other
SSR or CSR for Progressive Web App
DevOps,Other
DevOps Becomes DevSecOps to Secure Your Application
Web,Other
JAMSTACK IS THE NEW FACE OF STATIC SITES
Testing
What Is Quality Assurance and Why You Need It Immediately
Back-end,Amazon Web Services
AWS: Debugging Lambda Functions
Other
The Power of the Holistic Business Analysis
Other
Scaled Agile: Agile Approaches Extended Beyond The Team Level
Web
A secret formula of an agile dream team
DevOps
Hashicorp in Kubernetes: The short guide for Consul & Vault
Web
SEO Tips & Tricks for Single Page Web Applications
Web,Outsourcing
Angular 6 Will Be A Hit
DevOps
Kubernetes backup with Heptio Ark
Web,Outsourcing
ANGULAR 6 versus REACT 16.3
Web,Mobile,Back-end,Amazon Web Services
Serverless Architecture for Modern Apps: Stacks Providers & Caveats
Web,Mobile,Back-end,Amazon Web Services
Why Enterprises Choose Serverless Architecture
Outsourcing,Testing
How the QA Team Tests Your Project
Web,Outsourcing,Other
Angular 5 VS React.js – Who’s Going to Set the Tone in the Upcoming Year?
Outsourcing
The BPM in the Microservice Environment
DevOps
What to Choose: NFS or CEPH?
Other
Ember, jQuery, Angular, React, Vue: What to Choose?
Web,Outsourcing
Node.js vs. Angular.js – Two Sides of the Same Coin
DevOps
Use case: how to build and run Docker containers with NVIDIA GPUs
Web
A Guidance for Keeping Your Web Development Project Within the Budget: Three Key Pillars
Web
K&C insights: how to make your workflow work for you
Web
Microservices… when do we need them?
Web,Outsourcing
Angular 6 vs. Ember 3
DevOps,Other
Security in Kubernetes and How Companies Can Benefit from It
Mobile
Reasons to believe in Ionic hybrid app
Web,Outsourcing,Other
Golang vs. Node.js
DevOps,Amazon Web Services
Kubernetes is at the Forefront of a Secure Microservice Future