Changing the Kubernetes master node IP address

You can change (or correct the value of) the IP address of the Kubernetes master node.

About this task

During installation, there is an optional manager.external_ip setting in the install.hosts.properties file to specify the external IP address of the manager (master) node. Follow these steps if you specified the wrong value or need to change this value on a system that was installed successfully.

Procedure

From a Terminal session (as root or a non-root user ID enabled to run kubectl commands), enter the following command on the master node:
```
kubectl -n kube-system edit svc
```
Go to the first occurrence of two sections that list externalIPs. For example, suppose that 172.16.241.36 was entered for both the manager.ip and the manager.external_ip options:
```
externalIPs:
- 172.16.241.36
- 172.16.241.36
```
To change the external IP address, edit one of the lines. For example:
```
externalIPs:
- 9.30.194.224
- 172.16.241.36
```
Save and exit this file.

Results

After you save the file, the system automatically listens on 9.30.194.224 and accepts connections on this IP address.