Coredns Advanced Training
Tune and harden CoreDNS for high query volumes, build custom plugins and run CoreDNS for enterprise and multi-cluster DNS. Learn Coredns through a clear Foundation to Advanced path, with hands-on labs, live cohort options, certification support and full LMS access.
Last updated
Self-paced video subscription
Billed yearly at ₹9,996. This includes all four levels, complete LMS access for one year, plus 20+ additional courses and 50+ tools access.
- All four Coredns levels in one price.
- 20+ additional courses and 50+ tools included, even when subscribing to one course.
- Best fit for learners who want full-library access and flexible progress.
Live & Interactive session
Instructor-led cohort, max 8 to 10 hours, with demos, labs, Q&A, assignments and practical review.
- Live small-batch cohort from soon.
- Interactive discussion and lab troubleshooting.
- Recommended for teams that need guided implementation.
1:1 Live training
The same agenda, taught one-to-one by the trainer. Start immediately, without waiting for the next batch. Max 8 to 10 hours, one-to-one.
About Coredns Advanced Training.
Understand where Coredns fits in modern software delivery, what this level covers, and how the program builds practical confidence step by step.
Program overview
Coredns is taught as a practical technical skill for modern engineering, operations and platform teams. The course explains where the tool fits, how it is used in real delivery environments, and how learners can apply it through guided practice.
This DevOpsSchool Coredns program is built for working professionals who want usable skills instead of only conceptual exposure. The training emphasizes live examples, workflow clarity, operational controls and progressive skill depth from Foundation to Advanced.
Private Coredns training for delivery teams, platform groups and engineering organizations.
DevOpsSchool provides corporate Coredns training for teams that need faster adoption, workflow standardization, administrative control, integration guidance and governance-ready rollout. Private batches can be aligned to development practice, release workflow, access model, maturity level and internal tooling.
- Private online or classroom delivery for engineering teams
- Aligned to Coredns usage maturity, admin depth and collaboration patterns
- Useful for rollout, migration, governance and workflow consistency goals
- Can be tailored for developers, administrators, DevOps teams and leadership stakeholders
Why teams use DevOpsSchool
DevOpsSchool combines live demonstration, practical workflow discussion, implementation-oriented examples, and strong post-session learning support. That makes the training more usable for real teams than generic slide-led courses.
Choose any level. The page still shows the full progression.
Foundation, Essential, Intermediate and Advanced are presented as one linked training flow. Self-paced buyers get all levels by default, even if they start from only one course page.
Instructor-led, self-paced and corporate delivery options.
Compare delivery format, duration, level access and batch style. Fees are shown only in the top decision panel and once again after the agenda.
| Duration | Mode | Level access | Batch |
|---|---|---|---|
| 8 to 10 Hrs. max | Live & Interactive | Advanced | Public batch |
| 8 to 10 Hrs. max | 1:1 Live training | Advanced | Starts immediately |
| 1 year LMS access | Self-paced video | All 4 levels | Anytime access |
| 5 Days | Corporate | Coredns Advanced Training | Private team batch |
What learners should be able to do after Coredns training.
The outcomes are written for practical delivery teams: developers, DevOps engineers, release engineers, administrators and technical leads.
Configure CoreDNS
Write Corefiles that serve, forward, cache and rewrite DNS for apps and clusters.
Run reliable cluster DNS
Monitor, scale, secure and troubleshoot DNS in Kubernetes.
Engineer DNS at scale
Tune, extend and migrate CoreDNS for enterprise and multi-cluster platforms.
Why this skill, what you will achieve, and who should attend.
Use this section to decide whether the course matches your role, current experience and expected Coredns responsibilities before reviewing the detailed agenda.
Why Coredns matters
- Coredns helps teams standardize a critical part of their software delivery, infrastructure, automation or operations workflow.
- It gives learners a repeatable way to move from basic usage to confident execution in team and enterprise environments.
- For DevOps and platform teams, Coredns becomes more valuable when connected with automation, governance, monitoring and delivery practices.
- Teams using Coredns effectively reduce ad-hoc execution and move toward consistent engineering standards.
Objectives
- Understand Coredns concepts, architecture, terminology and operational usage patterns.
- Learn practical configuration, workflow design, access controls, team usage and quality practices.
- Apply Coredns in real delivery workflows using automation, integrations, traceability and governance patterns.
- Build practical confidence to use Coredns for individual, team and organizational use cases.
Pre-requisites
- Basic computer literacy and familiarity with software development workflows.
- Helpful but not mandatory: introductory DevOps, cloud, automation or software delivery awareness.
- No deep programming background is required for the Foundation and Essential levels.
Who this course is for
- Developers, administrators and engineers who need practical Coredns usage skills.
- DevOps engineers, release engineers, SREs and platform teams managing delivery standards.
- Engineering leads and technical managers responsible for workflow quality, access controls and governance.
- Corporate teams migrating to or standardizing on Coredns.
Small-batch live training starts every month.
Weekday batches start on the 1st and weekend batches on the first Saturday of every month. One-to-one (1:1) training can start immediately; corporate sessions are scheduled on demand.
Weekend live batch
Starts on the first Saturday of every month. Weekend sessions with demos, labs and Q&A; max 10 learners.
Weekday live batch
Starts on the 1st of every month. Weekday sessions for working professionals and distributed teams; max 10 learners.
Ask advisorAgenda depth up to the selected level.
This page shows the learning flow from Foundation through Advanced. Each level adds to the previous one, and the agenda stops at the current page level. Day counts are for corporate (day-wise) delivery; live online batches cover the same agenda in max 8 to 10 hours.
Foundation Level: DNS basics, Corefile and Kubernetes DNSDay 1
- DNS fundamentals: A, AAAA, CNAME, SRV and PTR records, recursion, authoritative and caching servers
- CoreDNS overview: CNCF graduated DNS server and its plugin chain architecture
- Installation: binary, container image and CoreDNS as the Kubernetes default DNS
- Corefile syntax: server blocks, zones, ports and plugin directives
- Core plugins: forward, cache, log, errors, health and ready
- Serving zones: the file plugin and zone files
- Static entries: the hosts plugin
- Testing: dig and nslookup against CoreDNS
- CoreDNS in Kubernetes: kube-dns Service, the CoreDNS Deployment and its ConfigMap
- Kubernetes DNS names: service.namespace.svc.cluster.local, pod DNS and search domains
Essential Level = Foundation + Kubernetes plugin, forwarding, rewrites and metricsDay 2 · 2 days cumulative
- kubernetes plugin: pods mode, fallthrough and TTL options
- Stub domains and upstreams: per-zone forwarding in the CoreDNS ConfigMap
- rewrite plugin: renaming queries and rewriting answers
- Answer handling: the loadbalance plugin and round-robin answers
- reload and loop plugins: hot reload and forwarding loop detection
- Metrics: the prometheus plugin, coredns_dns_requests_total and latency histograms
- Search path performance: ndots, search domains and the autopath plugin
- Debugging DNS in Kubernetes: dnsutils pod, CoreDNS logs and common failures
- Dynamic records: the etcd plugin
- Upgrades: CoreDNS versions in kubeadm clusters and Corefile migration
Intermediate Level = Essential + NodeLocal DNSCache, scaling and secure DNSDay 3 · 3 days cumulative
- NodeLocal DNSCache: architecture, deployment and benefits
- Scaling: replicas, cluster-proportional-autoscaler, HPA and anti-affinity
- Encrypted DNS: the tls plugin for DNS over TLS and DNS over HTTPS options
- Access control: the acl plugin for query restrictions
- DNSSEC: the dnssec and sign plugins
- Cloud DNS: route53, azure and clouddns plugins
- ExternalDNS: publishing Kubernetes services to external DNS providers
- Split-horizon DNS: the view plugin
- Observability: Grafana dashboards and alerts on SERVFAIL rates and latency
- Troubleshooting: conntrack races, UDP issues, upstream timeouts and i/o timeout errors
Advanced Level = Intermediate + performance, HA, custom plugins and migrationDays 4-5 · 5 days cumulative
- Performance tuning: cache sizing, prefetch, serve_stale and concurrency limits
- High availability: multi-zone placement, PodDisruptionBudgets and upstream redundancy
- Multi-cluster DNS: service discovery across clusters with stub domains and the MCS API
- Custom plugins: plugin.cfg, setup function, ServeDNS and building a custom binary
- Authoritative CoreDNS: enterprise internal DNS with zone transfers via the transfer plugin
- Security hardening: least privilege, query logging policy and network-level rate limits
- Capacity planning: benchmarking QPS with dnsperf
- Migration: from kube-dns or BIND to CoreDNS
- Health handling: lameduck shutdown and readiness during rollouts
- Capstone: production DNS design for a multi-cluster platform
Choose live training or a full year of self-paced access.
If someone buys Foundation, Essential, Intermediate or Advanced as self-paced video, the price stays the same and access is granted to all four levels by default.
Self-paced video subscription
Billed yearly at ₹9,996. This includes all four levels, complete LMS access for one year, plus 20+ additional courses and 50+ tools access.
- All four Coredns levels in one price.
- 20+ additional courses and 50+ tools included, even when subscribing to one course.
- Best fit for learners who want full-library access and flexible progress.
Live & Interactive session
Instructor-led cohort, max 8 to 10 hours, with demos, labs, Q&A, assignments and practical review.
- Live small-batch cohort from soon.
- Interactive discussion and lab troubleshooting.
- Recommended for teams that need guided implementation.
1:1 Live training
The same agenda, taught one-to-one by the trainer. Start immediately, without waiting for the next batch. Max 8 to 10 hours, one-to-one.
- Start immediately: no waiting for the monthly batch.
- One learner, one trainer: full attention on your questions.
- Sessions planned around your working hours.
- Your pace, with examples from your own projects and tools.
Method of training and assessment.
The course emphasizes practical demonstration, hands-on labs and assignment-based validation instead of passive lecture-only learning.
| SL | Method of training and assessment | Weightage |
|---|---|---|
| 1 | Understanding the problem space | 5% |
| 2 | Concept discussion | 10% |
| 3 | Live demo and walkthrough | 25% |
| 4 | Lab and hands-on exercises | 50% |
| 5 | Assignments and evaluation | 10% |
Labs, exercises and real workflow practice.
Every level moves from explanation to hands-on practice, review and troubleshooting.
Run CoreDNS with a custom zone
Run CoreDNS with a Corefile that serves an internal zone, forwards other queries upstream and caches answers, then test with dig.
Customize and debug cluster DNS
Add a stub domain and a rewrite rule to cluster DNS, expose metrics to Prometheus and fix a seeded DNS resolution failure.
Scale and secure cluster DNS
Deploy NodeLocal DNSCache, autoscale CoreDNS, add a DNS over TLS upstream and alert on SERVFAIL and latency.
Production DNS design capstone
Design, benchmark and document CoreDNS for a multi-cluster platform with HA, a custom plugin and a migration plan from BIND.
Coredns is taught as part of a working delivery ecosystem.
You learn where the tool sits in the wider engineering workflow, not in isolation.
Core foundations
Terminology, concepts, architecture and the operating model behind the tool.
Workflow traceability
Map practical work to tasks, approvals, documentation and delivery visibility.
Automation and integration
Use Coredns with validation checks, automation hooks and delivery workflows.
Governance controls
Operate with permissions, approvals, policy checks and production-safe workflows.
How your practical work is assessed.
Your certificate is backed by labs, assignments, capstone thinking and completion evidence.
Assignments
Level-specific assignments verify setup, configuration, workflow quality and operating discipline.
Hands-on validation
Learners are expected to complete practical usage, automation and troubleshooting exercises.
Completion record
Certificate issuance is tied to demonstrated participation, practical completion and course-level coverage.
Led by Rajesh Kumar and the DevOpsSchool practitioner network.
Training is grounded in practical DevOps, SRE, security, release and platform engineering experience with real enterprise delivery context.
Earn a DevOpsSchool Coredns certificate.
Completion includes a digital certificate with credential details, practical assignments and a learning record aligned to the selected Coredns level.
Certificate verificationCertificate of Completion
Coredns Advanced Training
Unique credential ID, verifiable online
What learners say about training with Rajesh Kumar.
“Rajesh is very good trainer. Rajesh was able to resolve our queries and question effectively. We really liked the hands-on examples covered during this training program.”
“Very well organized training, helped a lot to understand the AWS concept and detailed related to various tools. Very helpful”
“The training was very useful and interactive. Rajesh helped develop the confidence of all.”
Rated 4.6 on Google · All testimonials · Video reviews on YouTube
Quoted as published, from learners in Rajesh Kumar's live trainings across DevOpsSchool courses.
Used by developers, DevOps engineers, release leads and engineering managers.
Private batches are available for teams that want the same agenda aligned to their own tools and workflows.
Why this Coredns path is different.
The value is not only one course. The subscription unlocks the full learning ecosystem for one year.
| Feature | DevOpsSchool Coredns Training | Typical short course |
|---|---|---|
| Levels | Foundation, Essential, Intermediate, Advanced | Single generic syllabus |
| Self-paced access | All four levels plus 20+ courses and 50+ tools | Usually one course only |
| Live training | Demos, labs, Q&A and assignment review | Often lecture-heavy |
| Certificate | DevOpsSchool completion certificate | Varies by provider |
Questions learners ask before joining.
Does Foundation cost less than Advanced?
No. Self-paced pricing is intentionally the same because access includes all four levels by default.
What is included in the yearly subscription?
One year of complete LMS access, all four levels for the selected course, plus 20+ additional courses and 50+ tools access.
Can corporate teams request customization?
Yes. The live format can be aligned to team tools, governance requirements, workflows and internal delivery standards.
What is the recommended sequence?
Foundation → Essential → Intermediate → Advanced. The agenda is designed so each level builds on the previous one.
Talk to DevOpsSchool before choosing the batch.
Use this support section for batch questions, corporate planning, LMS access clarifications, or guidance on which Coredns level fits your team.
India / Worldwide: +91 99057 40781
USA: +1 (469) 756-6329
Email: contact@DevOpsSchool.com
Chat on WhatsAppExtend the course with articles, explainers and workflow guidance.
Continue learning with supporting articles that connect Coredns practices to DevOps, automation, governance and delivery workflows.
Training snapshots and certificate preview.
A look at the completion certificate and the course.
Certificate preview
See what course completion evidence looks like.
Tool-focused training
Course visuals reinforce the Coredns workflow and subject area.
Live batch experience
Training supports live online, private team and workshop-style delivery.
Start Coredns Advanced training.
Next weekday batch starts on the 1st; weekend batch on the first Saturday. Batches are capped at 10 learners. Send your details and DevOpsSchool will share the syllabus and batch options.