Automating Remote Resource Management with Ansible and Public-Key Authentication

As a lazy sysadmin, I rely heavily on tools like Ansible to automate repetitive tasks and make my life easier. One such task is managing remote resources, which can be time-consuming and error-prone if done manually. In this blog post, we’ll explore how to set up a newly deployed VM in our lab environment to be usable by Ansible+public-key authentication.

SSH Public Key Authentication

—————————-

Ansible uses SSH to connect to remote resources, and public key authentication is a great way to enhance security and avoid using passwords. When you connect to a remote server using SSH, you need to trust the key provided by the server. It’s essential to check the fingerprint of the key before accepting it, especially in highly secure environments.

To retrieve the fingerprint, you can use the `ssh-keygen -l` command. In cloud instances using cloud-init, the fingerprints of keys generated during instance deployment are commonly available in the console logs, which can help you retrieve them for comparison.

Removing and Adding Keys with Ansible

————————————–

To remove existing keys from the known hosts file and add new ones based on the result of a `ssh-keyscan`, we can use the following Ansible tasks:

“`yaml

—

– name: Remove and add SSH keys

hosts: all

become: true

tasks:

– name: Remove existing keys

shell: “ssh-keyscan -t rsa,dsa,ecdsa,ed25519 | awk ‘/^ssh-rsa/ {print $3}’ | xargs -I{} ssh-keygen -R {} > /dev/null 2>&1″

– name: Add new keys

shell: “ssh-keyscan -t rsa,dsa,ecdsa,ed25519 | awk ‘/^ssh-rsa/ {print $3}’ | xargs -I{} ssh-keygen -a {} >> /dev/null 2>&1″

“`

These tasks use the `ssh-keyscan` command to retrieve the list of available keys for a specific server, and then remove any existing keys using the `ssh-keygen -R` command. Finally, they add new keys using the `ssh-keygen -a` command.

Authenticating Users with Public Keys

————————————-

We can also use SSH public keys to authenticate users against a server. In cloud instances using cloud-init, it is possible to provide public keys to store on the instance at deployment. In that case, public key authentication is immediately available on the server. If you don’t use a cloud-init based clone or server creation, you can use an Ansible playbook to push keys to the target server.

Here’s a quick explanation of the process:

“`yaml

—

– name: Add user public key to authorized_keys

hosts: all

become: true

tasks:

– name: Copy public key

copy:

content: “{{ lookup(‘file’, ‘path/to/public_key’) }}”

dest: “/home/ansible/.ssh/authorized_keys”

“`

This task copies the public key from a file to the `authorized_keys` file in the home directory of the Ansible user. Once the key is pushed to the server, you can use it as an authentication mechanism for Ansible instead of passwords.

Disabling Password Expiration and Shell Idle Timeout

—————————————————

When using editor’s appliance (like VMware’s ones), you may need to reconfigure the password expiration for the root account. For lab and testing purposes, I fully disable the expiration policy with the following tasks:

“`yaml

—

– name: Disable password expiration

hosts: all

become: true

tasks:

– name: Edit /etc/ssh/sshd_config

lineinfile:

content: “PasswordAuthentication yes”

path: /etc/ssh/sshd_config

“`

This task edits the `sshd_config` file to disable password expiration. Please note that this is not recommended for production environments, as it can increase security risks.

Finally, we can disable the shell idle timeout for the root account using the following task:

“`yaml

—

– name: Disable shell idle timeout

hosts: all

become: true

tasks:

– name: Edit /etc/security/limits.conf

lineinfile:

content: “root soft noexec limit”

path: /etc/security/limits.conf

“`

This task edits the `limits.conf` file to disable the shell idle timeout for the root account.

Conclusion

———-

In this blog post, we explored how to set up a newly deployed VM in our lab environment to be usable by Ansible+public-key authentication. We discussed how to remove and add SSH keys, authenticate users with public keys, disable password expiration, and disable shell idle timeout. Please note that most of the tasks described in this post may affect the security of the target environment, so use them with caution.

The Great VDI Debate: Is it a Waste of Money or a Worthwhile Investment?

In the world of virtualization, one technology that has been gaining traction in recent years is Virtual Desktop Infrastructure (VDI). While some swear by its benefits, others believe it to be a waste of money. In the first ever Google Hangout conducted by TrainSignal.com, David Davis and J. Peter Bruzzese squared off on this very topic, presenting their respective arguments and engaging in a lively debate.

David’s Argument: VDI can be a Waste of Money

David began by stating that VDI can be a waste of money if implemented for the wrong reasons. He emphasized that simply migrating to Windows 7 or being up-to-date with technology is not a sufficient reason to invest in VDI. Instead, he believes that organizations should focus on security and high availability as the primary benefits of VDI.

David also pointed out that VDI may not result in significant hardware cost savings, as some might believe. In fact, he noted that VDI can actually be more expensive due to the need for higher-end hardware and additional infrastructure costs. Furthermore, he cautioned that VDI can be a complex and time-consuming undertaking, requiring significant planning and resources.

Peter’s Argument: VDI is a Worthwhile Investment

On the other hand, Peter argued that VDI can be a worthwhile investment for organizations that properly plan and implement it. He emphasized that VDI provides several benefits, including improved security, high availability, and easier management of desktop environments.

Peter also highlighted the potential cost savings of VDI, particularly in terms of hardware and licensing costs. He noted that by virtualizing applications, organizations can decouple the OS, profile, and application layers, resulting in a more streamlined and efficient IT environment. Additionally, he pointed out that VDI can help organizations avoid the high costs associated with physical desktop upgrades and replacements.

The Debate Continues…

While both participants presented compelling arguments, it’s clear that the topic of VDI is a complex and multifaceted one. The debate raged on, with David and Peter exchanging points and counterpoints on issues such as the cost-effectiveness of VDI, the importance of proper planning and implementation, and the potential benefits and drawbacks of virtualizing applications.

In the end, it’s clear that the decision to implement VDI should be based on a thorough assessment of an organization’s specific needs and goals. While VDI may not be a good fit for every organization, it can be a valuable tool for those looking to improve their desktop infrastructure and enhance their IT environments.

So, what do you think? Is VDI a waste of money or a worthwhile investment? Share your thoughts in the comments section below!

This is a blog post discussing the installation and configuration of VMware Tanzu Community Edition, which is a free version of the Tanzu platform that provides a Kubernetes-based application delivery platform. The post covers the steps to deploy Tanzu Community Edition on vSphere or ESXi, as well as some common issues that may arise during installation and configuration.

The post also discusses the use of Harbor as an image registry for Tanzu Community Edition, and provides information on other components such as Antre, Multus, Calico, Contour, External DNS, Prometheus, Fluentbit, and Grafana. Additionally, the post touches on service mesh, secrets, and configuration management, and provides some tips for troubleshooting common issues.

Overall, the post provides a comprehensive overview of the installation and configuration of VMware Tanzu Community Edition, as well as some best practices for using the platform.

VMware vRealize Automation SaltStack SecOps: A Promising but Incomplete Compliance and Vulnerability Management Solution

In the ever-evolving landscape of cybersecurity, compliance and vulnerability management have become crucial aspects of IT system security. To address these needs, VMware has introduced vRealize Automation SaltStack SecOps, an add-on for its vRealize Automation product. This solution aims to provide full-service, closed-loop automation for IT system compliance and vulnerability remediation. However, upon closer inspection, it becomes apparent that this solution is not without its limitations.

Compliance Component: Promising but Incomplete

The Compliance portion of the SecOps add-on allows you to manage benchmarks, checks, and define assessment policies. It includes a database of up-to-date, certified security content based on CIS and DISA STIGs (Security Technical Implementation Guides). While this sounds impressive, my experience has shown that the out-of-the-box content is often outdated and missing the latest operating system releases. For instance, as of this month, the product only contains a single STIG for Red Hat Enterprise Linux 7, but there is no support for Microsoft Windows Server 2019 or the recently released Microsoft Windows Server 2022.

Moreover, VMware’s Supported Security and Compliance Benchmarks documentation provides an inaccurate list of supported benchmarks within vRealize Automation SaltStack SecOps. Upon reviewing the available compliance benchmarks, I found that the following compliance benchmarks are available:

* VMware vRealize Automation SaltStack SecOps supports the creation of custom compliance content using the SaltStack SecOps Compliance Custom Content SDK. This feature allows you to create and manage custom compliance benchmarks within the product.

Vulnerability Component: Lacking Visibility and Updates

The Vulnerability component of vRealize Automation SaltStack SecOps is where the solution truly falls short. The tool appears to primarily surface missing patch findings based on the guest operating systems’ built-in patching capabilities. It does not provide visibility into other vulnerabilities that may exist within the system. Furthermore, the vulnerability data is only updated quarterly, which could leave organizations vulnerable to new threats.

The following are the key takeaways from my experience with VMware vRealize Automation SaltStack SecOps:

* The solution has the potential to be useful for enforcing compliance with industry benchmarks.

* New industry benchmarks have not been released in a timely fashion for enforcement via SaltStack SecOps.

* The lack of timely updates and incomplete support for latest operating systems hinder the product’s adoption within specific industries.

* Until VMware vRealize Automation SaltStack SecOps can list which vulnerabilities a system does and does not have, the solution itself will only be useful for remediating vulnerabilities imported from third-party vulnerability scanners.

In conclusion, while VMware vRealize Automation SaltStack SecOps shows promise in providing compliance and vulnerability management solutions, its limitations in supporting the latest operating systems, frequent updates, and complete visibility into vulnerabilities hinder its usefulness in real-world scenarios. As such, organizations must carefully evaluate their needs before adopting this solution.

VMware vSphere+ and vSAN+: Revolutionizing Cloud Infrastructure for On-Premises Workloads

In a bold move to extend the benefits of the cloud to on-premises workloads, VMware has announced the general availability of VMware vSphere+™ and VMware vSAN+™. These two groundbreaking solutions were first introduced on June 28, and they are set to change the way organizations approach cloud infrastructure.

VMware vSphere+ is a combination of industry-leading cloud infrastructure and an enterprise-ready cloud management platform that enables organizations to deploy and manage their cloud infrastructure with ease. This solution brings together the power of VMware’s vSphere hypervisor, vCenter server management tools, and vMotion migration technology, providing customers with a seamless and efficient way to manage their on-premises workloads.

VMware vSAN+, on the other hand, is a distributed storage solution that leverages the power of Software Defined Storage (SDS) to provide organizations with a highly available and scalable storage infrastructure. This solution allows customers to pool their existing servers and storage devices into a single, cohesive storage system, providing them with greater flexibility and control over their data storage needs.

The Benefits of vSphere+ and vSAN+

The benefits of vSphere+ and vSAN+ are numerous and far-reaching. Here are some of the key advantages that these solutions offer:

1. Seamless Cloud Integration: With vSphere+, organizations can easily integrate their on-premises workloads with public or private clouds, providing them with a unified cloud infrastructure.

2. Increased Efficiency: By leveraging the power of Software Defined Storage (SDS), vSAN+ enables organizations to significantly improve storage efficiency and reduce storage costs.

3. Enhanced Availability: Both solutions are designed to provide high availability and scalability, ensuring that organizations can run their critical applications with minimal downtime or disruption.

4. Greater Flexibility: With vSphere+ and vSAN+, organizations can pool their existing resources, such as servers and storage devices, into a single, cohesive system, providing them with greater flexibility and control over their infrastructure.

5. Simplified Management: These solutions offer simplified management tools that enable organizations to easily deploy, manage, and maintain their cloud infrastructure.

The Future of Cloud Infrastructure

The introduction of vSphere+ and vSAN+ marks a significant milestone in the evolution of cloud infrastructure. These solutions represent a major step forward in providing organizations with the tools they need to build and manage their own private clouds, while still enjoying the benefits of public cloud scalability and flexibility.

With vSphere+ and vSAN+, VMware is demonstrating its commitment to delivering innovative solutions that meet the evolving needs of its customers. These solutions are designed to help organizations navigate the complex landscape of cloud infrastructure, providing them with the tools they need to succeed in today’s fast-paced digital marketplace.

In conclusion, VMware vSphere+ and vSAN+ are two groundbreaking solutions that are set to revolutionize the way organizations approach cloud infrastructure. These solutions offer a range of benefits, including seamless cloud integration, increased efficiency, enhanced availability, greater flexibility, and simplified management. As the demand for cloud infrastructure continues to grow, these solutions are well-positioned to play a major role in shaping the future of cloud computing.

The Power of Virtualization Evangelism: My vExpert Journey

As I sit here reflecting on my journey as a virtualization evangelist, I am filled with a sense of pride and gratitude. Last week, VMware announced the annual vExpert awards for 2013, and I was honored to be one of the 581 virtualization enthusiasts recognized for my passionate advocacy for virtualization solutions in calendar year 2012.

For me, being awarded vExpert is more than just a badge of honor; it has been a transformative experience that has opened doors to new opportunities and challenges. It has allowed me to distinguish myself as an IT professional, given me elite access to software and betas, and pushed me to continue evangelizing the virtualization solutions I believe in.

As I look back on my journey, I am reminded of the power of virtualization evangelism. It is not just about promoting a technology, but about inspiring others to embrace its potential and revolutionize the way we approach IT. For me, that means sharing my knowledge and experiences through blog posts, social media, speaking engagements, and other forms of content creation.

I am also grateful for the support of TrainSignal, who has offered one year of free, unlimited IT video training to all 2013 vExperts. This is an incredible gift that will not only enhance our skills but also provide us with valuable resources to share with others. I encourage all those who are passionate about virtualization to apply for this amazing opportunity.

For those who are not yet vExperts, I urge you to pursue this distinction with vigor. Find ways to promote VMware virtualization through your blog, social media, speaking, writing, video authoring, VMworld, or at your local VMUG. The power of virtualization evangelism is not just about recognizing individuals but about spreading the word and empowering others to embrace this transformative technology.

I also want to extend my gratitude to TrainSignal for offering their IT video training package to non-vExperts as well. This is a great opportunity to enhance your skills and knowledge in virtualization, and I encourage you to take advantage of this offer.

In conclusion, being awarded vExpert has been a life-changing experience that has given me a platform to share my passion for virtualization with others. It has also provided me with valuable resources and opportunities to continue evangelizing the power of virtualization. I encourage all those who are passionate about virtualization to pursue this distinction, and I look forward to seeing the impact we can make together.

Working with vRealize Orchestrator and vRA IaaS Objects: A Hands-on Guide

In my previous article, we explored how to use vRealize Orchestrator (vRO) to interact with vRA IaaS objects. We saw how to capture a virtual machine named TESTVM02 using the model manager and access its properties. In this follow-up post, we’ll dive deeper into working with vRA IaaS objects in vRO and explore some advanced use cases.

Accessing Virtual Machine Hard Disks

One common requirement when working with virtual machines is the need to access their hard disks. However, the VCAC:Entity object does not have a direct property for accessing hard disks. To overcome this limitation, we can use the expand method of the get_link function. Here’s an example of how to access the hard disks of a virtual machine:

“`

// Get the VirtualMachine object

var vm = mm.get_object(“VirtualMachine”, “TESTVM02”);

// Expand the hard disks property

var hardDisks = mm.get_link(vm, “VMDiskHardware”).expand();

// Iterate over the hard disks and display their details

hardDisks.forEach(function (hd) {

console.log(“Hard Disk: ” + hd.Name);

});

“`

In this example, we first get the VirtualMachine object using the model manager’s get_object method. We then use the get_link method to expand the VMDiskHardware property of the virtual machine. Finally, we iterate over the hard disks and display their details.

Retrieving Virtual Machines Created After a Defined Date

Another common requirement is the need to retrieve virtual machines created after a defined date. To do this, we can use the get_objects method of the model manager with a filter expression that includes the creation date. Here’s an example of how to retrieve all virtual machines created after January 1st, 2020:

“`

// Get all virtual machines created after January 1st, 2020

var vmList = mm.get_objects(“VirtualMachine”, null, {

“creationDate”: {

“gte”: “2020-01-01T00:00:00Z”

}

});

// Iterate over the virtual machines and display their details

vmList.forEach(function (vm) {

console.log(“Virtual Machine: ” + vm.Name);

});

“`

In this example, we use the get_objects method to retrieve all virtual machines created after January 1st, 2020. We specify a filter expression that includes the creation date and set the gte (greater than or equal to) operator to ensure we only get virtual machines created on or after the specified date. Finally, we iterate over the virtual machines and display their details.

Conclusion

In this article, we explored some advanced use cases for working with vRA IaaS objects in vRO. We saw how to access hard disks of virtual machines and retrieve virtual machines created after a defined date. These use cases demonstrate the power of vRO and the vRA IaaS object model in managing and automating virtualized infrastructure. With these skills, you’ll be well-equipped to tackle a wide range of vRO and vRAIaaS challenges.

As always, we welcome your feedback and questions in the comments section below. If you have any other use cases or requirements you’d like to see covered in future articles, please let us know!

Alibaba Cloud’s 11.11 Sale: Get Ready for Exciting Offers and Discounts!

Are you ready to shop ’til you drop this 11.11 season? Look no further than Alibaba Cloud, where you can score exciting offers and discounts on a wide range of products and services! From cloud computing solutions to database management, we’ve got you covered with our comprehensive suite of tools and technologies.

But that’s not all – we’re also offering a special deal for those who act fast! With our limited-time offer, you can get your hands on 1,111 Dolarlık Nakit or 1,111 Dollar Karşılığında Alibaba Cloud Kredisi or Alibaba Cloud Özel Sertifikaları. All you need to do is click on the link below and tahmin (predict) your numbers to take advantage of this incredible offer!

But wait, there’s more! Our VMware vSphere environment is equipped with Linux OS templates, allowing you to use Ansible to easily deploy virtual machines. And if you’re looking for a more comprehensive solution, our Windows OS templates can help you deploy virtual machines with ease as well. Plus, with VMware Explore 2023 just around the corner, now is the perfect time to explore our solutions and see how they can benefit your business.

In other news, we’re thrilled to announce the release of PhotonOS 5.0! This latest version comes with some exciting new features and improvements, so be sure to check it out if you haven’t already. And don’t forget to follow us on social media to stay up-to-date on all our latest news and updates!

So what are you waiting for? Get ready to shop ’til you drop this 11.11 season with Alibaba Cloud! With our comprehensive suite of tools and technologies, you’ll be able to find everything you need to take your business to the next level. And don’t forget to take advantage of our limited-time offer before it’s too late!

Happy shopping!

Upgrading from VMware vCenter Server 7.0 to 8.0 involves several steps, including selecting the deployment size, specifying the data store and network, and migrating data from the source appliance. The process includes various stages, such as reviewing deployment details, connecting to the source vCenter Server, pre-upgrade check results, selecting upgrade data, configuring VMware Customer Experience Improvement Program, and confirming that the source vCenter Server will shut down.

During the upgrade process, the installer provides progress dialogs showing the different stages of deployment. These stages include deploying vCenter Server, connecting to the source vCenter Server, migrating data, and configuring the VMware Customer Experience Improvement Program. The final stage confirms that the upgrade is complete and provides a link to access the new VMware vCenter Server 8.0 appliance.

Before starting the upgrade process, it is essential to ensure that you have a backup of the source vCenter Server appliance. Additionally, ensure that your vSphere deployment meets the minimum requirements for VMware vCenter Server 8.0.

Overall, the upgrade process from VMware vCenter Server 7.0 to 8.0 involves several steps and stages, but the installer provides clear instructions and progress dialogs to help guide you through the process.

Cloud Provider Pod: A Promising Option for Deploying Cloud Infrastructure from Scratch

As a cloud provider, deploying infrastructure from scratch can be a daunting task. However, with the right tools and expertise, it can be done efficiently and effectively. One such tool that has gained significant attention in recent times is Cloud Provider Pod (CPP), an option that promises to automate many of the tedious and error-prone tasks involved in deploying cloud infrastructure.

In this article, we will delve into the features and capabilities of CPP, its limitations, and the potential benefits it offers for cloud providers. We will also explore some of the deep dive sessions provided by Frank Denneman and his colleagues, which offer a wealth of technical information on topics such as NUMA and vNUMA.

Cloud Provider Pod: An Overview

CPP is a product that takes advantage of the VMware stack to deploy cloud infrastructure. It supports many of the most complex and error-prone configurations, including those that are typically difficult to automate. With CPP, cloud providers can automate many of the tasks involved in deploying cloud infrastructure, such as configuring networks, setting up storage, and provisioning resources.

The version 1.6 of CPP was announced in November, with new features including support for Kubernetes clusters, improved support for vSphere 7, and better integration with NSX-T. These new features promise to further simplify the process of deploying cloud infrastructure and improve the overall experience for cloud providers.

Deep Dive Sessions: A Rich Source of Technical Information

Frank Denneman and his colleagues provided a series of deep dive sessions on various topics related to CPP and VMware technologies. These sessions were technical in nature and offered a wealth of information for those looking to master the intricacies of cloud infrastructure deployment.

One session focused on NUMA, a topic that is often overlooked but is critical for achieving optimal performance in cloud infrastructure. The session covered the basics of NUMA, how it affects cloud infrastructure, and best practices for configuring it. Another session delved into vNUMA, which is a new feature in vSphere 7 that allows for more efficient use of NUMA resources.

Other sessions covered topics such as CPU hot add, aligning core per socket, and managing the CPU scheduling in vSphere. These sessions were highly technical but offered valuable insights for those looking to optimize their cloud infrastructure.

Benefits of Cloud Provider Pod

CPP offers several benefits for cloud providers, including:

1. Automation: CPP automates many of the tedious and error-prone tasks involved in deploying cloud infrastructure, freeing up time for more strategic activities.

2. Simplification: CPP simplifies the process of deploying cloud infrastructure, making it easier for cloud providers to manage their environments.

3. Flexibility: CPP supports a wide range of configurations and can be customized to meet the specific needs of cloud providers.

4. Improved performance: With CPP, cloud providers can optimize their cloud infrastructure for better performance and scalability.

Limitations of Cloud Provider Pod

While CPP offers many benefits, it also has some limitations, including:

1. Limited support for multi-cloud environments: CPP currently supports only a limited number of cloud providers, making it less suitable for multi-cloud environments.

2. Steep learning curve: CPP is a highly technical product that requires significant expertise to master.

3. Limited customization: While CPP can be customized to some extent, it may not be as flexible as other products on the market.

Conclusion

Cloud Provider Pod is a promising option for cloud providers looking to deploy infrastructure from scratch. With its ability to automate many of the tedious and error-prone tasks involved in deploying cloud infrastructure, CPP offers significant benefits in terms of simplification, flexibility, and improved performance. While it has some limitations, CPP is a valuable tool for cloud providers looking to optimize their environments and improve their bottom line.