Tag: ip

Changing IP address for all nodes in Proxmox Cluster

Posted on by Bian Xi Leave a Comment on Changing IP address for all nodes in Proxmox Cluster

Changing IP address for all nodes in Proxmox Cluster

Steps

  • Change IP in all nodes in following files /etc/network/interfaces and /etc/hosts
  • Change all IP address in /etc/pve/corosync.conf
  • Reboot all nodes.

Troubleshooting

If above failed during the synchronization, use following commands to fix it.

  • Stop cluster services on the node that wasn't synchronized
systemctl stop corosync.service
systemctl stop pve-cluster
  • Update the corosync.conf file manually
vi /etc/corosync/corosync.conf
  • Restart cluster services
systemctl start corosync.service
systemctl start pve-cluster

Verify configuration file again and cluster status

cat /etc/corosync/corosync.conf
pvecm status

Kubernetes Service External IPs

Posted on by Bian Xi Leave a Comment on Kubernetes Service External IPs

Kubernetes Service External IPs

After external service created in Kubernetes, the external IPs are not assigned unless the underlying infrastructure supports the automatic creation of Load Balancers and have the respective support in Kubernetes, as is the case with the Google Cloud Platform and AWS.

In such case, all internal IPs are able to be accessed using service port. This is the same as Docker Swarm.

Minikube

Run following command to assign an external IP

minikube service <service_name>

Another one is to run minikube tunnel to assign the IP.

kubeadm

Manually assign IP using following configuration file

spec:
  type: LoadBalancer
  externalIPs:
  - 192.168.0.10

MetalLB

MetalLB hooks into your Kubernetes cluster, and provides a network load-balancer implementation.

References

Kubernetes service external ip pending
Using minikube tunnel
Ingress class
Load Balancer Service type for Kubernetes
Service Mesh - Kubernetes LoadBalancer Service External IP pending
MetalLB
Service Mesh - Build Kubernetes & Istio environment with kubeadm and MetalLB