User Guide

Contents
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Creating a Log Subscription in the GUI 38-40
Configuring Global Settings for Logging 38-40
Rolling Over Log Subscriptions 38-43
Viewing Recent Log Entries in the GUI 38-45
Viewing Recent Log Entries in the CLI (tail Command) 38-45
Configuring Host Keys 38-47
CHAPTER 39 Centralized Management Using Clusters 39-1
Overview of Centralized Management Using Clusters 39-1
Cluster Requirements 39-2
Cluster Organization 39-2
Initial Configuration Settings 39-3
Creating and Joining a Cluster 39-4
The clusterconfig Command 39-4
Adding Groups 39-10
Managing Clusters 39-10
Administering a Cluster from the CLI 39-10
Copying and Moving Settings 39-11
Experimenting with New Configurations 39-11
Leaving a Cluster Permanently (Removal) 39-12
Upgrading Machines in a Cluster 39-12
CLI Command Support 39-13
All Commands Are Cluster-aware 39-13
Restricted Commands 39-14
Administering a Cluster from the GUI 39-15
Cluster Communication 39-18
DNS and Hostname Resolution 39-18
Cluster Communication Security 39-19
Cluster Consistency 39-19
Disconnect/Reconnect 39-20
Interdependent Settings 39-21
Loading a Configuration in Clustered Appliances 39-22
Best Practices and Frequently Asked Questions 39-24
Best Practices 39-24
Setup and Configuration Questions 39-27
General Questions 39-28
Network Questions 39-28
Planning and Configuration 39-29