16.1 Notes on reading this chapter
The explanation of the multi-node function in this chapter assumes that the reader has a basic knowledge of HA Monitor. For details about HA Monitor, see the manual HA Monitor for Linux(R) (x86).
When reading the manual HA Monitor for Linux(R) (x86), note the following points:
-
The HADB server operates in monitor mode.
-
The configuration inherits the alias IP address.
-
The HADB server runs as a program that does not have an interface to HA Monitor.
-
Server failures are detected without issuing an API.
-
HA Monitor Extension cannot be used.
-
The following table shows the correspondence between the terminology used in HA Monitor manuals and the terminology used in HADB manuals.
|
No. |
Terminology used in HA Monitor manuals |
Terminology used in HADB manuals |
|---|---|---|
|
1 |
Host |
Node |
|
2 |
Active system |
Master node |
|
3 |
Standby system |
Slave node |
|
4 |
Active server |
HADB server on the master node |
|
5 |
Standby server |
HADB server on a slave node |
|
6 |
Host failure |
Node failure |
|
7 |
Server failure |