For the hardware and operating systems to use for the monitoring server (Manager/Proxy Manger) and monitored server (agent for Agentless Monitoring), refer to Chapter 2, "Installation Conditions and Resource Estimation" in the Installation Guide.
Required software
The software required for communication between the monitoring server and the monitored server is described below.
Communication method | Software required for monitoring server | Software required for monitored server |
|---|---|---|
telnet (selectable for Windows and UNIX) | telnet server | |
ssh (selectable for UNIX) | ssh server (*1) |
*1: The following software is required to communicate by SSH. We recommend using ssh from a security perspective:
SSH V2.0 or later
SSH is installed as a standard function with Solaris9, Solaris10, Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.
Resource estimation
The following explains the number of telnet/ssh connection sessions required on the monitored server so that performance information can be collected from the monitored server.
Platform of the monitored server | Number of telnet or |
|---|---|
Windows | 2 |
Solaris | 7 |
Linux | 5 |
AIX | 8 |
HP-UX | 7 |
Note
If the total number of connection sessions is very large, it may take some time for the DCM services/daemons of the monitoring server to start or stop.
Communications by telnet or ssh may not be performed properly if the network status of the environment is not optimal (there are intermittent interruptions, etc.) or if the monitored server is busy. Perform monitoring in an environment with consistently reliable communications.
The default maximum number of sessions that can be connected simultaneously with Windows telnet is "2". Therefore it will be necessary to change the maximum number of sessions that can be connected simultaneously. Follow the steps in "3.1.2 Settings for Monitored Servers".
There is no limit to the maximum number of sessions that can be connected simultaneously by default with UNIX telnet and ssh.
The following explains the disk space required on the monitored server so that performance information can be collected from the monitored server.
Disk space required on the monitored server: 1MB
