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Change the root system (classical instead of GCP)

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Nemo 2020-06-20 15:44:45 +02:00
parent 0272261ad7
commit 61328abb63
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docs/11-pod-network-routes.md
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@ -8,53 +8,31 @@ In this lab you will create a route for each worker node that maps the node's Po
## The Routing Table
In this section you will gather the information required to create routes in the `kubernetes-the-hard-way` VPC network.
Print the internal IP address and Pod CIDR range for each worker instance:
**On each worker node**, add the following routes:
```bash
for instance in worker-0 worker-1 worker-2; do
gcloud compute instances describe ${instance} \
--format 'value[separator=" "](networkInterfaces[0].networkIP,metadata.items[0].value)'
done
ip route add 10.200.0.0/24 via 192.168.8.20
ip route add 10.200.1.0/24 via 192.168.8.21
ip route add 10.200.2.0/24 via 192.168.8.22
```
> output
```bash
10.240.0.20 10.200.0.0/24
10.240.0.21 10.200.1.0/24
10.240.0.22 10.200.2.0/24
```
## Routes
Create network routes for each worker instance:
```bash
for i in 0 1 2; do
gcloud compute routes create kubernetes-route-10-200-${i}-0-24 \
--network kubernetes-the-hard-way \
--next-hop-address 10.240.0.2${i} \
--destination-range 10.200.${i}.0/24
done
```
> Don't take care of the `RTNETLINK answers: File exists` message, it appears just when you try to add an existing route, not a real problem.
List the routes in the `kubernetes-the-hard-way` VPC network:
```bash
gcloud compute routes list --filter "network: kubernetes-the-hard-way"
ip route
```
> output
> Output:
```bash
NAME NETWORK DEST_RANGE NEXT_HOP PRIORITY
default-route-081879136902de56 kubernetes-the-hard-way 10.240.0.0/24 kubernetes-the-hard-way 1000
default-route-55199a5aa126d7aa kubernetes-the-hard-way 0.0.0.0/0 default-internet-gateway 1000
kubernetes-route-10-200-0-0-24 kubernetes-the-hard-way 10.200.0.0/24 10.240.0.20 1000
kubernetes-route-10-200-1-0-24 kubernetes-the-hard-way 10.200.1.0/24 10.240.0.21 1000
kubernetes-route-10-200-2-0-24 kubernetes-the-hard-way 10.200.2.0/24 10.240.0.22 1000
default via 192.168.8.1 dev ens18 proto static
10.200.0.0/24 dev cnio0 proto kernel scope link src 10.200.0.1 linkdown
10.200.0.0/24 via 192.168.8.20 dev ens18
10.200.1.0/24 via 192.168.8.21 dev ens18
10.200.2.0/24 via 192.168.8.22 dev ens18
192.168.8.0/24 dev ens18 proto kernel scope link src 192.168.8.21
```
Next: [Deploying the DNS Cluster Add-on](12-dns-addon.md)