This is taken directly from Jorgen Dahle Naess' work to open the machine config daemon log for a certain host,

machineconfig.sh

#!/bin/bash

mcdlog(){
  host=$1
  ns=openshift-machine-config-operator
  podname=$(oc get pods -o wide --no-headers -n ${ns}| grep ${host} | egrep ^machine-config-daemon | awk '{ print $1 }')
  oc logs -f ${podname} -c machine-config-daemon -n ${ns}
}

mcslog(){
  host=$1
  ns=openshift-machine-config-operator
  podname=$(oc get pods -o wide --no-headers -n ${ns}| grep ${host} | egrep ^machine-config-server | awk '{ print $1 }')
  oc logs -f ${podname} -n ${ns}
}