Articles, notes and random thoughts on Software Development and Technology
There was a vulnerability found today in some older Kubernetes versions. There are already patched versions available. If you have 1.11.3 installed from rke, you can update to 1.11.5 by editing your cluster.yml, replacing the kubernetes image: with And then run ‘rke up’ again. This is from this Github ticket.
Rancher’s RKE is a Kubernetes cluster installer – see more here. Pre-reqs: Docker must be running on the client machine where you are going to run the rke setup tool The docs are not obvious, but the rke tool is run on a client machine to provision your cluster, it is not run on any …
I have a test Kubernetes cluster running with a CentOS7 master nodes, and 4 CentOS7 worker nodes, under VMware ESXi. The ip addresses of each of the VMs is from DHCP, and as I hadn’t booted these VMs for a while, when I recently started them up they all got new IP addresses, so the …
Continue reading “Updating Kubernetes master node and worker node config if an ip address changes”
During a Rolling Update on Kubernetes, if a service has a Readiness Probe defined, Kubernetes will use the results of calling this heathcheck to determine when updated pods are ready to start accepting traffic. Kubernetes supports two probes to determine the health of a pod: the Readiness Probe: used to determine if a pod is …