apply

Kubernetes: patch every array element using kubectl and jq


Categories: Kubernetes

Below is an example using ‘kubectl patch’ to update the securityContext of a single, specific container named ‘my-init-container1’ of the ‘initContainers’ list. kubectl patch deployment my-deployment -n default –patch='{ “spec”: { “template”: { “spec”: { “initContainers”: [ { “name”: “my-init-container1”, “securityContext”: { “runAsUser”: 999 } } ] } } } }’ But ‘initContainers’ is an … Kubernetes: patch every array element using kubectl and jq

KVM: installing Terraform and the libvirt provider for local KVM resources


Categories: Linux, Virtualization

Terraform is a popular tool for provisioning infrastructure on cloud providers such as EC2 and Azure, but there is also a provider written for local KVM libvirt resources. Using the libvirt provider, we can use standard Terraform constructs to create local VMs, networks, and disks.  And unlike older versions of this provider, the plugin binary … KVM: installing Terraform and the libvirt provider for local KVM resources

Kubernetes: Updating an existing ConfigMap using kubectl replace


Categories: Containers

Creating a ConfigMap using ‘kubectl create configmap’ is a straightforward operation.   However, there is not a corresponding ‘kubectl apply’ that can easily update that ConfigMap. As an example, here are the commands for the creation of a simple ConfigMap using a file named “ConfigMap-test1.yaml“. $ cat ConfigMap-test1.yaml test1: foo: bar # create and then show … Kubernetes: Updating an existing ConfigMap using kubectl replace

KVM: Terraform and cloud-init to create local KVM resources


Categories: Linux, Virtualization

Terraform is a popular tool for provisioning infrastructure on cloud provider such as EC2 and Azure, but there is also a provider written for local KVM libvirt resources. Using the libvirt provider, we can use standard Terraform constructs to create local VMs, networks, and disks.