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Add pods DNS resolution for external names

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This commit is contained in:
Nemo
2020-06-27 20:57:27 +02:00
parent 7f3fb70d29
commit c847d01b74
3 changed files with 15 additions and 2 deletions
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1
deployments/coredns.yaml
View File

@@ -61,6 +61,7 @@ data:
fallthrough in-addr.arpa ip6.arpa fallthrough in-addr.arpa ip6.arpa
} }
prometheus :9153 prometheus :9153
forward . /etc/resolv.conf
cache 30 cache 30
loop loop
reload reload

2
docs/09-bootstrapping-kubernetes-workers.md
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@@ -35,7 +35,7 @@ Verify if swap is enabled:
sudo swapon --show sudo swapon --show
``` ```
If output is empthy then swap is not enabled. If swap is enabled run the following command to disable swap immediately: If output is empty then swap is not enabled. If swap is enabled run the following command to disable swap immediately:
```bash ```bash
sudo swapoff -a sudo swapoff -a

14
docs/12-dns-addon.md
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@@ -4,10 +4,22 @@ In this lab you will deploy the [DNS add-on](https://kubernetes.io/docs/concepts
## The DNS Cluster Add-on ## The DNS Cluster Add-on
Get the CoreDNS yaml:
```bash
wget https://storage.googleapis.com/kubernetes-the-hard-way/coredns.yaml
```
Edit the `coredns.yaml` file to change CoreDNS configuration to enable DNS resolution for external name:
```bash
sed '/.*prometheus :9153/a \ \ \ \ \ \ \ \ forward . /etc/resolv.conf' coredns.yaml
```
Deploy the `coredns` cluster add-on: Deploy the `coredns` cluster add-on:
```bash ```bash
kubectl apply -f https://storage.googleapis.com/kubernetes-the-hard-way/coredns.yaml kubectl apply -f coredns.yaml
``` ```
> Output: > Output: