Managing the security of Kubernetes applications

A securityContext field defines the privilege and access control settings for a Pod in the Pod YAML specification. We need to configure the security context in case a Pod or container needs to interact with the security mechanisms of the underlying operating system unconventionally, and in this section, we’ll introduce how to configure a security context for a Pod or container.

As a part of your prep work, you can create a new user and a new group as shown in the following:

sudo useradd -u 2000 container-user-0
sudo groupadd -g 3000 container-group-0

We will now log in to the worker node and create a new .txt file called message.txt:

sudo mkdir -p /etc/message
echo "hello Packt" | sudo tee -a /etc/message/message.txt

From here, you’ll see the message that we input from the terminal:

 hello Packt

Now, we need to adjust the permission to limit the permission for testing purposes, which is...