Figure 5-31 Side car logging directly to logging system Important:  At the time of writing, the current Filebeat image runs as the root user within  the container, so ensure this complies with your security policies before giving the  namespace access to a PodSecurityPolicy that allows containers to be run with the root  user. This example will use a simple WebSphere Liberty deployment and Filebeat side car to send  log data from a file populated by WebSphere within the WebSphere container to stdout, to  simulate typical application logging. This functionality can be achieved in a similar way, by  mounting another image, such as busybox, to tail the file and redirect to stdout in the busybox  container, but this is not scalable and requires multiple busybox side car containers for  multiple log files. Filebeat has a scalability advantage, as well as advanced data processing to  output the data to stdout and stderr flexibly. To create a WebSphere and Filebeat side car Deployment, perform the following steps: Using a Filebeat side car to forward log file messages to stdout and  stderr 1. Create a new namespace called sidecar for this example 2. Creating a ConfigMap for the Filebeat configuration allows you to reuse the same settings  for multiple deployments without redefining an instance of Filebeat every time.  Alternatively, you can create one ConfigMap per deployment if your deployment requires  very specific variable settings in Filebeat. This ConfigMap will be consumed by the  Filebeat container as its core configuration data. kubectl create namespace sidecar Create the ConfigMap in Example 5-33 to store the Filebeat configuration using  kubectl  create -f filebeat-sidecar-config.yaml. Example 5-33 filebeat-sidecar-config.yaml apiVersion: v1 kind: ConfigMap metadata: name: filebeat-sidecar-config namespace: sidecar data: filebeat.yml: |- filebeat.prospectors: - input_type: log paths: '${LOG_DIRS}' exclude_lines: '${EXCLUDE_LINES:[]}' include_lines: '${INCLUDE_LINES:[]}' 212  IBM Cloud Private System Administrator’s Guide