Questions tagged [dns]

The Domain Name System (DNS) is a hierarchical naming system built on a distributed database for computers, services, or any resource connected to the Internet or a private network.

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How can I free up the Azure default domain name for use in another web app?

TL;DR: Is there any way to delete the default domain for an Azure web app? I want to reuse the domain name with a different app. I need to take over the administration and start paying the bills for ...
Rolf Staflin's user avatar
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Why does the kubernetes run the coreDNS as deployment in the cluster, rather than a static pod?

The Kubernetes controlplane usually run components as static pods: kube-apiserver: static pod kube-scheduler: static pod kube-controller-manager: static pod etcd: static pod The DNS is also the ...
Ryan Lyu's user avatar
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How can I connect to Kubernetes Job without service from other Pod through dns?

I have Kubernetes job without service and I need to connect to it from different pod (not job) on the cluster. According to docs, I can do it only by using IP, but not with DNS as it has no service. ...
Anna's user avatar
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Cannot solve specific dns record on kubernetes (coredns / nodelocaldns)

I hit a weird problem with coredns/nodelocaldns, basically I can't resolve a specific dns record for a domain. The record is www.digicert.com , it answers correctly tho if I dig with +tcp or use ...
Luca De Rugeriis's user avatar
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How to configure docker with pihole for recursive DNS?

I am running Ubuntu 22.04 LTS server for my server where I use Docker to run various applications. Afterwards I installed unbound and Pihole for Recursive DNS. I changed the Nameserver in the host ...
RitZz's user avatar
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Issues finding certificates within ingress controller in kubernetes

I am trying to deploy some we applications to Kubernetes. I have an issue mapping the domain into the cluster via the Ingress Controller. When I exec into the ingress controller pod, I can see the ...
Dean O'Brien's user avatar
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131 views

How frequently is AWS Route 53 DNS Latency-Based Routing (LBR) recalculated for a given user?

Does anybody know how frequently one could expect Route 53's latency-based routing data to change for a given user? For example, if I have Route 53 LBR setup with CloudFront sitting in front of 2 ...
Michael Oryl's user avatar
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error execution phase addon/coredns: unable to create a new DNS service: rpc error: code = Unknown desc = malformed header: missing HTTP content-type

I am trying to install Kubernetes on my Ubuntu 22.04 machine. When I try the following command: sudo kubeadm init --skip-phases=addon/kube-proxy --pod-network-cidr=10.244.0.0/16 --v=5 I get this ...
best_of_man's user avatar
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is it possible to read dns ip address from resolv.conf with in aws ecs container and use at the server startup?

app architecture: [ The normal request flow happens when an api request triggered from the UI as shown in the above diagram(abstracted few components to talk about specific point) as shown in the ...
anand mohan reddy's user avatar
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Docker swarm sending DNS queries about its containers

I have docker swarm cluster with few services running in containers. My company is experiencing DNS issues, so I have ran tcpdump -i ens18 port 53 to capture and analyze DNS traffic. In output I ...
DJ83's user avatar
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dev/stage/prod in separate AWS accounts, managed via terraform cloud workspaces, how can I use lb ip in DNS records for each env?

We currently have 4 aws accounts: root - consolidated billing, domain purchased via route 53 development staging production And they're all managed via terraform cloud as separate workspaces. in dev/...
SebastianG's user avatar
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2k views

Newly installed k3s cluster on fresh OS install can not resolve external domains or connect to external resources?

I'm following the k3s tutorial for troubleshooting DNS, after step 2 "Add KUBECONFIG for user.", if run this command, kubectl run -it --rm --restart=Never busybox --image=busybox:1.28 -- ...
Evan Carroll's user avatar
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Server-side Gitlab URL rewriting?

Our old BitBucket server had a URL like this, https://bitbucket.acme.net/scm/acmegroup/acme-project.git And, we're wanting to move to GitLab with a DNS switch which has a different URL-convention ...
Evan Carroll's user avatar
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Unable to get complete response when using api gateway

I have created API Gateway with mtls enabled and with integration type as vpc link to NLB. Below screenshot is from Integration Request. URL Path Parameters , URL Query String Parameters , HTTP ...
abc's user avatar
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Error certificate does not match in API gateway (500 internal server error)

I am getting below error when calling my custom domain name url. Execution failed due to configuration error: Host name 'xx-1247c652476caa.elb.eu-west-1.amazonaws.com' does not match the certificate ...
abc's user avatar
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Apex domain to point to an Openshift ROSA application

We have a ROSA (Openshift on AWS) cluster, working fine with all kinds of domains except one, which happens to be an apex of the Hosting Zone in our Route53. So, say, the domain is example.com and it'...
ptrk's user avatar
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How can I find out what ml2 extension drivers are enabled?

According to this document on "The Networking service internal DNS resolution", a feature I need requires the dns extension driver in OpenStack, [ml2] extension_drivers = port_security,dns ...
Evan Carroll's user avatar
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How do you enable the DNS extension to ml2 in OpenStack?

In one doc it says, To enable the internal DNS resolution, the neutron-server service must be configured with the dns_domain config option set to a value other than openstacklocal in neutron.conf ...
Evan Carroll's user avatar
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Does an FQDN on OpenStack mean there must be a resolver for it?

When I look at different resources on OpenStack, I see a FQDN's like this, host-10-2-67-96.openstacklocal. host-2620-0-28a4-4140-f816-3eff-fefd-6381.openstacklocal. I see this for ports and for NOVA ...
Evan Carroll's user avatar
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1 vote
1 answer
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How can you map DNS/host names to their IPs at scale?

We're trying to look at a fairly large httpd config and find the all the IPs/ports we'd have to allow through a new firewall. Ports are easy, but resolving all the DNS names to the (multiple) IPs they ...
John Humphreys's user avatar
1 vote
1 answer
1k views

Access to k3s DNS from host

I have a single node k3s "cluster" with few Services on it. Whenever I want to access to one of them, I'm forced to either do a port-forward or a describe (and get the endpoint, but it ...
GlinesMome's user avatar
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Azure Kubernetes pod is inaccessible from another pod

Internally we have a Spark Executor and Spark Driver running in Kubernetes. When you run a Spark Job in Kubernetes, Spark will create 2 types of pods Spark Drivers and Spark Executors. The Spark ...
Nicholas DiPiazza's user avatar
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10 views

An API to register/transfer domain names [closed]

today I faced a new challenge, I have a system that allows my clients to create/manage x stores. the problem here that i want to be able to create a domain name for each store (based on client ...
Amir Saadallah's user avatar
3 votes
1 answer
654 views

Point docker container DNS to specific port?

I was wondering if it was possible to assign the DNS server a docker container is querying (via docker run --dns, or otherwise) to be on a specific port, something other than 53? I had built a custom ...
Klaus's user avatar
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1 vote
2 answers
436 views

How to setup ExternalDNS on Microk8s cluster?

I have a Highly Available, 3 nods, Microk8s cluster with MetalLB and Ingress. The cluster is supposed to serve a website with high availability. I want to enable ExternalDNS for the website with the ...
Sojaner's user avatar
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1 answer
474 views

Drone is unable to clone GitHub Project

I'm trying to set up drone, but when running a build it fails at the clone step. I'm pretty sure this is a DNS issue and that I just configured the runner wrong, but I just can't figure it out. This ...
radmacher's user avatar
-2 votes
1 answer
38 views

How to change Ip for a DNS

I'll be very direct. I'm tired to search this and do not found anything about it. There is any way to change a lan ip to a dns (not chaging 'hosts' file)? Example: I've a centOs running in machine A ...
Bruno Souto's user avatar
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336 views

What reasons should I NOT use a private DNS zone and CNAME services in my AWS/K8s environment?

I have a Kubernetes cluster in AWS, with apps that talk to AWS services like RDS, Elasticache, Elasticsearch, DynamoDB, etc. For the services where it's available (Elasticache and RDS, and more ...
Daniel Huckstep's user avatar
1 vote
1 answer
829 views

How to access a fully qualified domain name through "localhost"?

About nine minutes into a tutorial on ERPNext I followed directions as: root@mordor:/home/nicholas/git/frappe_docker# root@mordor:/home/nicholas/git/frappe_docker# cat .env LETSENCRYPT_EMAIL=nicholas@...
Nicholas Saunders's user avatar
1 vote
2 answers
138 views

DNS Issues with Cloud formation template

I am trying to automate the creation of an EC2 instance with CloudFormation but am running into issues with DNS. Once the instance is created it can't seem to resolve any hostnames. I try to ping a ...
arunm's user avatar
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0 votes
1 answer
655 views

Can't hit redis using DNS name in multi-container pod on Kubernetes

Can anyone shed some light on why this might not work? I can access redis just fine using the pod's IP address, $ rdcli -h 10.152.183.65 10.152.183.65:6379> but when I try to use the DNS name, I ...
Brian Reading's user avatar
1 vote
1 answer
284 views

What are the advantages of using AWS nameservers as opposed to servers provided by other registrars?

I am transfering a domain name from namecheap to aws route 53 service. AWS provides you with three options when transfering: Continue to use the name servers provided by the current registrar or DNS ...
YulePale's user avatar
  • 115
0 votes
1 answer
196 views

Find relevant domain/hosted zone under which to host subdomain

Context In Terraform, to create a new domain record, I first need to find the zone under which it should be hosted. E.g. If I want to create a DNS record for mysite.example.com, I'd get the zone ...
JohnLBevan's user avatar
1 vote
1 answer
49 views

AWS Setting instance to use domain from another account

We're transitioning between accounts and we have an app on our new account but we want to use the domain from our old account. We plan on shutting off the old account soon and transitioning everything ...
Ametz's user avatar
  • 11
1 vote
3 answers
2k views

Trick a docker containers DNS to resolve a different url

I am not sure I know the terminology to describe this correctly, my apologies. But for a contrived example. Say I have a docker container that runs code that accesses "google.com". But I want all ...
JasoonS's user avatar
  • 111
2 votes
1 answer
159 views

How to locally resolve host name starting with variable slug?

An app, running on my laptop in development mode, comprises several Docker containers, one of which runs a Django web app. This web app expects to receive HTTP requests using a hostname with a ...
John Ramsden's user avatar
1 vote
1 answer
278 views

Why does running echo with exec form in a Dockerfile create /etc/resolv.conf?

I was trying to build a Docker image from a Dockerfile and I had a line in there which reads: RUN ["echo", "'anything'", ">", "./a_file"] This didn't work, and I eventually had to use: RUN ["sh",...
dayuloli's user avatar
  • 141
2 votes
2 answers
293 views

Does Kubernetes internal networking keep traffic to co-located Pods where possible?

In Kubernetes, if I run a Service Foo on every Node, and also Service Bar on every Node, i.e. with DaemonSets. If a Pod from Service Foo needs to make a request to Service Bar, does Kubernetes ...
Tom's user avatar
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1 vote
1 answer
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Where do I set that agent certificate for Puppet on Amazon Linux?

I am using: Puppet server version: 1.2.0 Amazon Linux 2 I have master and agent set in /etc/puppet/puppet.conf and currently I get back only the certificate for the master on the master. The agent's ...
doug's user avatar
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2 votes
1 answer
567 views

service-to-pod communication is broken in kubernetes

I have an in house 5 node cluster running on bare-metal and I am using Calico. The cluster was working for 22 days but suddenly it stopped working. After investigating the problem I found out that the ...
AVarf's user avatar
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0 votes
1 answer
148 views

Route53 DNS records stopped resolving

Last week, my TXT and other DNS records on Route53 stopped resolving: https://dnschecker.org/#TXT/thuijls.net The entries are set like: What else could be missing here? As far as I'm aware, nothing ...
Jorg's user avatar
  • 101
1 vote
1 answer
2k views

Sub-subdomain Domain name for different environment

If we have two components in a API api front-end and we have three environments staging qa development and a domain name superproduct.com What would be the most logical domain spacing: http://...
David's user avatar
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2 votes
2 answers
2k views

docker build throws UnknownHostException with jenkins dind slave + kubernetes plugin

So Jenkins is installed inside the cluster with this official helm chart. And this is my installed plugins as per helm release values: installPlugins: - kubernetes:1.18.1 - workflow-job:2.33 ...
Abdennour TOUMI's user avatar
1 vote
1 answer
249 views

Route53 Routing Policies - Best Policy for US-based Ecommerce?

When I look over the documentation for Route 53 Routing Policies they list 7 different policies. How should I pick the right one if I am building out new infrastructure in AWS for a US-based e-...
Randy L's user avatar
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1 vote
2 answers
662 views

Cloudfront for ELB, automatic redirection

I have a question regarding a redirect (302) that happens when accessing the /admin panel of my Craft CMS application. I've setup CloudFront for my app that runs on Craft 3. DNS points to CF (CNAME), ...
Justyna Zet's user avatar
0 votes
1 answer
640 views

kubernetes statefulset - communicate addresses of other pods when pod launches?

Is there some metadata that I can apply, or some DNS that I can query, such that when a pod is started, the addreses of all the other pods in that statefulset will be somehow made available to the ...
bryan hunt's user avatar
1 vote
1 answer
2k views

Using Amazon VPC provided DNS trough AWS Site-to-Site VPN

Currently I have an AWS VPC connected to our corporate network using AWS Site-to-Site VPN. I can reach my EC2 instances trough the tunnel by their private IP Address. Inside the VPC each EC2 ...
sgargel's user avatar
  • 244
0 votes
1 answer
828 views

Terraform: Route53, LB and CDN interdependencies

My team uses Terraform to deploy the necessary infrastructure. Currently, our stack is composed of: AutoScalingGroup fronted by a Load-Balancer, and a Route53 DNS record that points to this LB; We ...
Rafael Marques's user avatar
1 vote
2 answers
3k views

Accessing External REST api From Wthin Kubernetes Cluster

This is my first foray into Kubernetes land... I'm still pretty shaky on how things work and still wrapping my head around some of the concepts so please bear with me there. The application I am ...
TheMethod's user avatar
  • 113
3 votes
2 answers
10k views

Kubernetes on k3s can't resolve domains from custom dns server (fritz.box with dnsmasq)

I have a dns server running at 192.168.0.19 for custom domains like .fritz.box. Having a single node cluster on k3s, Rancher was installed using a subdomain server2.fritz.box using this command: ...
Lion's user avatar
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