If multiple FlowForce Server instances were configured to run as a cluster, the master FlowForce Server instance is responsible for executing jobs and logging their details. A worker machine does not execute any local jobs and does not have a Log View, unless you convert it back to standalone mode, see also Terminating the "Worker" Mode.
All the logging in a clustered setup is done by the master FlowForce Server instance. In addition, the "Running jobs" table in the Home page includes a Worker column which indicates the cluster member on which the job instance is running. This can be a master or any worker machine that is part of the cluster, depending on the job configuration, see Setting up Distributed Execution.
To view the currently running or recently finished job instances for a specific cluster member (worker or master), click the link in the Worker column. This opens the Cluster member page where you can monitor the job instances running on that cluster member.