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	<title>DNS &#8211; Best DevOps</title>
	<atom:link href="https://www.bestdevops.com/tag/dns/feed/" rel="self" type="application/rss+xml" />
	<link>https://www.bestdevops.com</link>
	<description>Lets Learn, Do it &#38; Share! Thats a Best DevOps!!!</description>
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		<title>Azure gets classy with Java resource management libraries</title>
		<link>https://www.bestdevops.com/azure-gets-classy-with-java-resource-management-libraries/</link>
					<comments>https://www.bestdevops.com/azure-gets-classy-with-java-resource-management-libraries/#respond</comments>
		
		<dc:creator><![CDATA[anil]]></dc:creator>
		<pubDate>Thu, 05 Nov 2020 06:15:17 +0000</pubDate>
				<category><![CDATA[Azure]]></category>
		<category><![CDATA[CDN]]></category>
		<category><![CDATA[Compute]]></category>
		<category><![CDATA[Containers]]></category>
		<category><![CDATA[DNS]]></category>
		<category><![CDATA[Integration]]></category>
		<category><![CDATA[resource]]></category>
		<category><![CDATA[SQL]]></category>
		<category><![CDATA[Weidong]]></category>
		<guid isPermaLink="false">http://www.bestdevops.com/?p=14265</guid>

					<description><![CDATA[Source:-https://devclass.com Java may be slipping down the charts, but Microsoft is still feeling the love for the world’s second most [&#8230;]]]></description>
										<content:encoded><![CDATA[<p>Source:-https://devclass.com</p>
<p>Java may be slipping down the charts, but Microsoft is still feeling the love for the world’s second most popular language. The Azure cloud is now equipped with new libraries to ease the integration of Java code with online resources, the company announced in a blog post.</p>
<p>“The latest Azure Resource Management Libraries for Java is a result of our efforts to create a resource management client library that is user-friendly and idiomatic to the Java ecosystem,” said Weidong Xu, senior software engineer, Azure Management SDK for Java. “These new libraries provide a higher-level, object-oriented API for managing Azure resources, that is optimized for ease of use, succinctness, and consistency.”</p>
<p>The libraries are designed around a fluent or chained methodology, which embodies a workflow approach to chaining together the components for a complete process. In particular, the libraries are designed to automatically fulfil dependencies or resource allocation processes for each task.</p>
<p>For example, creating a virtual machine can chain in the required storage account and service plan, and it is similarly easy to programmatically batch create and delete Managed Disk Instances.</p>
<p>Other new library functions include support for Microsoft Authentication Library (MSAL) through the new Azure Identity library, which enables developers to acquire tokens from the Microsoft identity platform endpoint in order to authenticate users and access secured APIs.</p>
<p>The company lists some twenty services available through the new libraries, including CDN, Compute, Containers, DNS, SQL, and Network and Traffic Management. Documentation and code snippets are available in the Azure SDK and developer blogs.</p>
]]></content:encoded>
					
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			</item>
		<item>
		<title>Making the DevOps–DNS Connection: Why Intelligent DNS Is Critical to Modern DevOps Pipelines</title>
		<link>https://www.bestdevops.com/making-the-devops-dns-connection/</link>
					<comments>https://www.bestdevops.com/making-the-devops-dns-connection/#respond</comments>
		
		<dc:creator><![CDATA[anil]]></dc:creator>
		<pubDate>Sat, 26 Aug 2017 08:29:53 +0000</pubDate>
				<category><![CDATA[Continuous Delivery]]></category>
		<category><![CDATA[DevOps]]></category>
		<category><![CDATA[Automation Tools]]></category>
		<category><![CDATA[DNS]]></category>
		<category><![CDATA[Software Development]]></category>
		<guid isPermaLink="false">http://www.bestdevops.com/?p=2488</guid>

					<description><![CDATA[Traditional DNS was never designed for the rapid, automated infrastructure changes that modern DevOps teams demand. Learn how intelligent DNS integrates with Infrastructure as Code, service discovery, and continuous delivery to remove bottlenecks from your pipeline.]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph">DevOps has reshaped how software is built and delivered. Shorter release cycles, automated infrastructure provisioning, and continuous deployment pipelines have replaced the slow, stage-gated Waterfall model. Yet one foundational internet technology — the Domain Name System (DNS) — has struggled to keep pace. Traditionally managed by hand and slow to propagate changes, DNS can quietly become one of the biggest bottlenecks in an otherwise well-tuned DevOps pipeline.</p>



<p class="wp-block-paragraph">This article examines how DNS fits into the DevOps lifecycle, where traditional DNS falls short, and what capabilities an &#8220;intelligent&#8221; DNS solution must provide to support Infrastructure as Code (IaC), service discovery, and continuous delivery.</p>



<h2 class="wp-block-heading">DNS Then and Now</h2>



<p class="wp-block-paragraph">DNS was designed in the early days of the internet, when infrastructure changed infrequently and manual administration was acceptable. Today&#8217;s cloud-native environments look nothing like that. Servers spin up and tear down in seconds, IP addresses change constantly, and development, staging, and production environments are rebuilt on every pipeline run.</p>



<p class="wp-block-paragraph">One of the core advantages of cloud computing is that it lets DevOps teams automatically create and remove servers on demand. Infrastructure as Code tooling exposes rich APIs that provision entire environments programmatically. Traditional DNS — with its manual record management, long TTLs, and slow propagation — becomes an immediate bottleneck when infrastructure is being reconfigured in near-real time.</p>



<p class="wp-block-paragraph">An intelligent DNS solution addresses this by providing:</p>



<ul class="wp-block-list">
<li><strong>High-performance, low-latency propagation</strong> so that DNS changes reach edge resolvers quickly after infrastructure changes occur.</li>
<li><strong>A robust, well-documented API</strong> that can be called directly from IaC and configuration management tooling.</li>
<li><strong>Service discovery integration</strong> so that DNS records stay in sync with the current state of running services.</li>
</ul>



<h2 class="wp-block-heading">Moving Quickly: Why DNS Propagation Speed Matters</h2>



<p class="wp-block-paragraph">Speed is a first-class requirement in DevOps. Continuous integration and continuous deployment pipelines are designed to push code from commit to production as fast as possible. A developer can spin up or remove a hundred virtual servers with a single command using IaC tooling. If DNS changes take 30 minutes or more to propagate to edge servers after that provisioning event, the entire pipeline stalls.</p>



<p class="wp-block-paragraph">When evaluating DNS providers for a DevOps environment, propagation speed should be a primary selection criterion — not an afterthought. Look for providers that publish propagation SLAs and offer anycast networks, which route DNS queries to the nearest point of presence and reduce round-trip times globally.</p>



<p class="wp-block-paragraph">Equally important is TTL flexibility. Intelligent DNS providers allow you to set very short TTLs during active deployments and raise them during stable periods, giving you fine-grained control over how quickly changes take effect versus how much query load you generate.</p>



<h2 class="wp-block-heading">Infrastructure as Code and DNS Automation</h2>



<p class="wp-block-paragraph">Infrastructure as Code (IaC) is the practice of defining and managing infrastructure — servers, networks, load balancers, DNS records — using machine-readable configuration files instead of manual processes. IaC brings software engineering disciplines to infrastructure management. The three foundational pillars are:</p>



<ul class="wp-block-list">
<li><strong>Version control:</strong> Infrastructure definitions live in source control (Git, for example), giving teams the ability to track changes, review diffs, and roll back to a known-good state when something goes wrong.</li>
<li><strong>Unit and integration testing:</strong> Infrastructure code is validated at multiple stages of the pipeline — before a change is applied — giving teams confidence that what reaches production matches what was intended.</li>
<li><strong>Infrastructure blueprints (templates):</strong> Reusable, parameterized definitions of infrastructure components that can be instantiated consistently across environments, reducing configuration drift.</li>
</ul>



<p class="wp-block-paragraph">Configuration as Code (CaC) sits alongside IaC, providing a declarative way to manage the configuration state of provisioned infrastructure. Tools like <strong>Terraform</strong> and <strong>Ansible</strong> are common examples. Terraform, in particular, has DNS provider plugins that allow you to manage DNS records as part of the same plan-and-apply workflow used to provision the underlying compute resources — meaning DNS changes and infrastructure changes are atomic and auditable together.</p>



<p class="wp-block-paragraph">For this integration to work reliably, your DNS provider must expose a robust, well-authenticated API. A provider that only supports a web console forces you to break the automation chain and reintroduce manual steps — exactly the kind of friction DevOps exists to eliminate.</p>



<h2 class="wp-block-heading">Service Discovery in the Age of DevOps</h2>



<p class="wp-block-paragraph">Service discovery is the mechanism by which applications and services automatically locate each other on a network — finding the correct IP addresses and ports for dependent services without hardcoded configuration. In static environments, a periodically updated CMDB or hosts file could serve this purpose. In dynamic, containerized, or microservices-based environments, this approach fails quickly.</p>



<p class="wp-block-paragraph">When hundreds of service instances can start, stop, and migrate across hosts within seconds, service information must be discovered and updated in real time. Three widely used open-source service discovery tools are:</p>



<ul class="wp-block-list">
<li><strong>Consul</strong> (HashiCorp): Provides health-checked service registration with a built-in DNS interface, making it a natural bridge between service discovery and DNS.</li>
<li><strong>Apache ZooKeeper</strong>: A distributed coordination service commonly used for service registry in Java-ecosystem environments.</li>
<li><strong>etcd with Registrator and confd</strong>: etcd provides a distributed key-value store; Registrator automatically registers containers with the store, and confd watches for changes and regenerates configuration files or DNS entries accordingly.</li>
</ul>



<p class="wp-block-paragraph">When your managed DNS provider is tightly integrated with your service discovery layer, DNS records stay in sync with the actual state of running services. Both systems reflect the same ground truth, reducing the risk of stale records pointing to decommissioned instances.</p>



<h2 class="wp-block-heading">Continuous Delivery Requirements for DNS</h2>



<p class="wp-block-paragraph">A DNS provider supporting a mature DevOps practice needs to offer the same level of reliability and flexibility expected of any other production-grade infrastructure component. When evaluating providers, look for the following capabilities:</p>



<ul class="wp-block-list">
<li><strong>Anycast network:</strong> Routes queries to the geographically nearest DNS server, reducing latency and providing inherent resilience against localized failures.</li>
<li><strong>Robust REST API:</strong> Essential for integrating DNS management into CI/CD pipelines, IaC tooling, and service discovery systems.</li>
<li><strong>Native integrations with DevOps tooling:</strong> First-party or well-maintained provider plugins for tools like Terraform and Ansible reduce integration friction significantly.</li>
<li><strong>Zone transfer support (AXFR/IXFR):</strong> Allows you to synchronize zone data with secondary providers or internal resolvers.</li>
<li><strong>Clear SLAs for availability and propagation time:</strong> Ensure these align with your pipeline&#8217;s performance requirements and your application&#8217;s availability targets.</li>
<li><strong>Secondary DNS / redundant providers:</strong> No single DNS provider is immune to outages. High-profile distributed denial-of-service attacks against major DNS providers have demonstrated the risk of relying on a single authoritative source. Configuring at least two authoritative DNS providers is a widely recommended best practice for production workloads.</li>
</ul>



<h2 class="wp-block-heading">Summary: DNS Is a DevOps Concern</h2>



<p class="wp-block-paragraph">DNS is not a &#8220;set it and forget it&#8221; infrastructure component in a DevOps environment. It is an active participant in the deployment pipeline, service discovery layer, and traffic management strategy. Teams that treat DNS as an afterthought will find it becoming a recurring source of delays, outages, and configuration drift.</p>



<p class="wp-block-paragraph">Choosing an intelligent DNS provider — one with fast propagation, a developer-friendly API, native integrations with tools like Terraform and Ansible, and a commitment to reliability backed by a meaningful SLA — is a foundational decision for any team practicing modern DevOps. Pair that with redundant authoritative providers and close integration between DNS and your service discovery tooling, and DNS becomes an enabler of velocity rather than a brake on it.</p>
]]></content:encoded>
					
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			</item>
		<item>
		<title>The Benefits of Intelligent DNS in DevOps Projects</title>
		<link>https://www.bestdevops.com/the-benefits-of-intelligent-dns-in-devops-projects/</link>
					<comments>https://www.bestdevops.com/the-benefits-of-intelligent-dns-in-devops-projects/#respond</comments>
		
		<dc:creator><![CDATA[anil]]></dc:creator>
		<pubDate>Fri, 11 Aug 2017 09:21:16 +0000</pubDate>
				<category><![CDATA[DevOps]]></category>
		<category><![CDATA[DevOps Best Practices]]></category>
		<category><![CDATA[IT trends]]></category>
		<category><![CDATA[Automation Tools]]></category>
		<category><![CDATA[DevOps model]]></category>
		<category><![CDATA[DevOps Tools]]></category>
		<category><![CDATA[DNS]]></category>
		<category><![CDATA[IT]]></category>
		<category><![CDATA[Software Development]]></category>
		<guid isPermaLink="false">http://www.bestdevops.com/?p=2390</guid>

					<description><![CDATA[Traditional DNS was never designed for the speed of modern DevOps pipelines. Learn how intelligent DNS improves automation, reduces bottlenecks, and integrates with Infrastructure as Code, service discovery, and CI/CD workflows.]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph"><em>This article is based on a source originally published on betanews.com (2017). The core concepts remain relevant to modern DevOps practices.</em></p>



<h2 class="wp-block-heading">Why DNS Matters in a DevOps World</h2>



<p class="wp-block-paragraph">The DevOps model continues to gain traction because it reduces errors, shortens development cycles, and lowers the cost of post-deployment fixes. Central to DevOps is continuous integration and continuous delivery (CI/CD), which depends on the automatic creation and teardown of infrastructure — and on the network layer keeping pace with those changes.</p>



<p class="wp-block-paragraph">DNS is often an afterthought in DevOps planning, yet it sits at the foundation of every network interaction. When infrastructure can be spun up or torn down in seconds, a DNS layer that takes 30 minutes to propagate changes becomes a serious bottleneck. Intelligent DNS — a managed, API-driven DNS service with fast propagation, service discovery integration, and native DevOps toolchain support — addresses this gap directly.</p>



<h2 class="wp-block-heading">How Traditional DNS Became a Bottleneck</h2>



<p class="wp-block-paragraph">DNS was originally designed for a relatively static internet. Hostnames changed infrequently, and manual zone file edits were acceptable. Cloud computing changed that model entirely. Infrastructure as Code (IaC) tools can now provision or destroy hundreds of virtual servers with a single command, using robust cloud provider APIs. Traditional DNS, with its manual zone management and slow propagation, cannot keep up with this pace.</p>



<p class="wp-block-paragraph">Organizations running modern DevOps pipelines need a DNS solution that offers:</p>



<ul class="wp-block-list">
<li><strong>High performance and low propagation latency</strong> — DNS changes should be visible at edge nodes in seconds, not minutes or hours.</li>
<li><strong>A robust, programmable API</strong> — so DNS records can be created, updated, and deleted as part of automated infrastructure workflows.</li>
<li><strong>Service discovery integration</strong> — so applications can locate other services dynamically as infrastructure scales up and down.</li>
</ul>



<h2 class="wp-block-heading">DevOps as an Evolution of Agile</h2>



<p class="wp-block-paragraph">Agile methodology broke down the wall between developers and QA testers by merging them into cross-functional teams, producing higher-quality software at greater velocity. DevOps extends this philosophy further by also merging development, testing, and operations responsibilities. The goal is to eliminate silos between development, QA, and network operations teams so that code flows smoothly from commit to production.</p>



<p class="wp-block-paragraph">This cultural and tooling shift enables organizations to release software faster, respond to customer feedback more quickly, and compete more effectively. Every component of the delivery pipeline — including DNS — must support this velocity rather than impede it.</p>



<h2 class="wp-block-heading">Propagation Speed: Why Your DNS Round-Trip Time Matters</h2>



<p class="wp-block-paragraph">In a DevOps environment, a single IaC operation might create or remove dozens or hundreds of virtual servers. Each of those servers may need DNS records created, updated, or deleted immediately. If DNS propagation lags — taking 30 minutes for changes to appear at authoritative and edge name servers — your automation pipeline stalls. Developers and operators are left waiting, which defeats the purpose of automation.</p>



<p class="wp-block-paragraph">When evaluating managed DNS vendors for a DevOps environment, propagation speed should be a primary evaluation criterion. Test how quickly changes made via the vendor&#8217;s API appear at their global edge nodes before committing to a provider.</p>



<h2 class="wp-block-heading">Infrastructure as Code and Its DNS Requirements</h2>



<p class="wp-block-paragraph">Infrastructure as Code treats server and network configuration with the same rigor as application source code — versioned, tested, and repeatable. IaC has three primary components:</p>



<ul class="wp-block-list">
<li><strong>Infrastructure Blueprints</strong> — Declarative definitions of your infrastructure that enable consistent, repeatable deployments. Tools like Terraform, Ansible, and Chef are widely used for this purpose.</li>
<li><strong>Version Control</strong> — Infrastructure definitions are stored in a version control system (e.g., Git), allowing teams to track changes and roll back to a known-good state when needed.</li>
<li><strong>Unit and Integration Testing</strong> — Infrastructure code is validated at multiple stages of the pipeline before reaching production, reducing the risk of configuration errors causing outages.</li>
</ul>



<p class="wp-block-paragraph">For DNS to participate fully in IaC workflows, the DNS provider must offer a programmable API that can be called by tools like Terraform or Ansible. Native provider plugins or modules — for example, a Terraform provider for your DNS vendor — remove the need for custom scripting and make DNS changes a first-class citizen of your infrastructure pipeline. A DNS change becomes just another resource declaration, applied, versioned, and rolled back like any other infrastructure component.</p>



<h2 class="wp-block-heading">Service Discovery and DNS Integration</h2>



<p class="wp-block-paragraph">Service discovery is the mechanism by which applications and servers identify what other services are available on the network, along with their current IP addresses and ports. Static configuration files and periodically updated databases are insufficient in modern DevOps environments where services scale horizontally and endpoints change constantly.</p>



<p class="wp-block-paragraph">Common service discovery tools include:</p>



<ul class="wp-block-list">
<li><strong>Consul</strong> — Provides service discovery, health checking, and a distributed key-value store, with built-in DNS interface support.</li>
<li><strong>Apache ZooKeeper</strong> — A distributed coordination service often used for service registry and leader election.</li>
<li><strong>etcd with Registrator and confd</strong> — etcd serves as a distributed key-value store; Registrator automatically registers containers with service registries; confd watches etcd for changes and updates configuration files accordingly.</li>
</ul>



<p class="wp-block-paragraph">When your managed DNS provider is tightly integrated with your service discovery layer, DNS records and service registries stay in sync automatically. As services come online or go offline, DNS is updated in real time — ensuring that clients always resolve to a live endpoint without manual intervention.</p>



<h2 class="wp-block-heading">Best Practices for Choosing an Intelligent DNS Provider</h2>



<p class="wp-block-paragraph">The DNS requirements for a DevOps pipeline are not fundamentally different from those for high-traffic production internet traffic — they are simply applied at greater automation velocity. When selecting a managed DNS provider to support a DevOps environment, evaluate the following criteria:</p>



<ul class="wp-block-list">
<li><strong>Anycast DNS network</strong> — Requests are routed to the nearest point of presence, reducing latency and improving resilience.</li>
<li><strong>Zone transfer support</strong> — Standard AXFR/IXFR zone transfers should be supported and easy to configure for secondary DNS providers.</li>
<li><strong>Service Level Agreement (SLA)</strong> — The provider&#8217;s uptime and performance guarantees should meet your availability requirements.</li>
<li><strong>Robust, well-documented API</strong> — Full CRUD operations on DNS records via a REST API (or equivalent) are essential for automation, IaC, and service discovery workflows.</li>
<li><strong>Native integration with DevOps toolchains</strong> — Look for official Terraform providers, Ansible modules, or Chef cookbooks that allow DNS management without custom scripting.</li>
</ul>



<h2 class="wp-block-heading">Build in DNS Redundancy</h2>



<p class="wp-block-paragraph">No single DNS provider is immune to outages. A best-practice DevOps architecture includes redundancy at every layer of the stack, and DNS is no exception. Configure a minimum of two authoritative DNS providers for your zones. This means that if one provider experiences an outage or degraded performance, the other continues to serve queries for your domains without interruption.</p>



<p class="wp-block-paragraph">Multi-provider DNS redundancy requires that both providers support zone transfers or API-based synchronization so that records stay consistent across providers. Factor this synchronization mechanism into your IaC and automation design from the start, rather than retrofitting it later.</p>



<h2 class="wp-block-heading">Summary</h2>



<p class="wp-block-paragraph">Intelligent DNS is not a luxury for DevOps teams — it is a foundational requirement. As infrastructure becomes more ephemeral and automation more pervasive, DNS must evolve from a manually managed utility into a fully programmable, high-performance component of the delivery pipeline. The key capabilities to prioritize are fast change propagation, a robust API, native IaC tool integration, service discovery compatibility, and multi-provider redundancy. Teams that align their DNS strategy with these requirements will remove a significant bottleneck from their DevOps lifecycle and ship more reliably at higher velocity.</p>
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