Required Software
The software required for communication between the monitoring server and the monitored server is described below.
Virtual Software | Communication Method | Software required for monitoring server | Software required for mMonitored server |
|---|---|---|---|
Hyper-V | telnet | - | telnet server |
VMware ESX Red Hat Virtualization function (Xen) | ssh | - | ssh server (*1) |
VMware ESXi | https | - | - |
*1: The following software is required to communicate by SSH:
SSH V2.0 or later
For VMware ESX and Red Hat Virtualization function (Xen).
Please use ssh installed as a standard function.
Conditions under which collection can be performed
VMware ESX:
The command for collecting performance information (esxtop) must be able to be used.
VMware ESXi
HTTPS communication must be able to be used.
Hyper-V:
The command for collecting performance information (typeperf) must be able to be used.
Red Hat virtualization function (Xen):
The command for collecting performance information (xentop) must be able to be used.
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 |
|---|---|
VMware ESX | 1 |
VMware ESXi | - |
Hyper-V | 3 |
Red Hat virtualization function (Xen) | 6 |
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 Hyper-V (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 "3.2.2 Settings for Monitored Servers".
There is no limit to the maximum number of sessions that can be connected simultaneously by default with VMware ESX/Red Hat Virtualization function (Xen) (UNIX) 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
