This section explains high availability for L-Servers.
Regardless of the server type, select the [HA] checkbox on the [Server] tab to perform redundancy settings when creating an L-Server.
For physical L-Servers
Select the [HA] checkbox to enable the selection of the pool of a spare server.
The server pool of the spare server that the physical server will use for automatic switchover is registered in can be specified.
For details on the [Server] tab, refer to "16.2.2 [Server] Tab" in the "User's Guide for Infrastructure Administrators (Resource Management) CE".
For the details on conditions for switchover to spare servers, refer to "9.3 Server Switchover Conditions" in the "Setup Guide VE".
For virtual L-Servers
Settings differ according to the server virtualization software being used.
Refer to "16.3.2 [Server] Tab" in the "User's Guide for Infrastructure Administrators (Resource Management) CE".
Checks of Spare Server Models and Configurations
The L-Server definition and spare server configuration are checked when configuring server redundancy during creation or modification of a physical L-Server.
Confirmation is performed on the following items of an L-Server definition and spare server configuration:
Server Model
Check if there is a server compatible with the L-Server definition in the specified server pool.
The compatibility of server models is evaluated by the definition file for checks on spare server models and configurations.
The definition file is created when installing managers.
When installing a new compatible server model, update the definition file by adding the server model.
In the following cases, the same server model of physical server as the server specified in the L-Server definition is selected.
When there is no definition file
When there is an error in definitions
Number of NICs
Check the number of NICs mounted on a compatible server and L-Server.
A server is considered as a server satisfying the conditions, in the following cases:
The number of NICs mounted on the compatible server is the same as the number in the L-Server definition
The number is more than the number in the L-Server definition
Selection of Suitable Spare Servers
When the [Use a low spec server] checkbox is not selected, a spare server is automatically set.
Based on the following conditions, an L-Server definition is compared to physical L-Servers existing in the specified resource pool as a spare server:
When specifying the model name on creation of a physical L-Server
If the "model name" is the same or compatible
Number of NICs
If CPUs and memories are specified when specifying a physical L-Server
CPU core count
CPU clock speed
Memory capacity
Number of NICs
Configurations are not checked.
A server that satisfies or exceeds all conditions and has the nearest specifications to the L-Server definition is selected.
When the [Use a low spec server] checkbox is selected, physical servers with models matching that in the L-Server definition are selected as spare servers.
For details, refer to "B.9 Methods for Selecting Physical Servers Automatically" in the "Setup Guide CE".
Modification of Checks on Spare Server Models and Configurations
The switchover policy and the definition of server model compatibility can be modified.
Although the definition file is deployed when installing managers, a server model with a matching L-Server definition and physical server model is selected as a spare server in the following cases:
When there is no definition file
When there is an error in definitions
When the [Use a low spec server] checkbox is selected, physical servers with models matching that in the L-Server definition are selected as spare servers.
The definition file for checks on spare server models and configurations is stored in the following location.
[Windows Manager]
Installation_folder\SVROR\Manager\etc\customize_data
[Linux Manager]
/etc/opt/FJSVrcvmr/customize_data
spare_server_config.rcxprop
For the definition file, write each line in the following format:
Key = Value |
When adding comments, start with a number sign ("#").
Specify the following items in a definition file.
Item | Key | Value | Remarks |
|---|---|---|---|
Policy of Switchover | OVERALL_POLICY | skip | Configure the check policy of the L-Server definition for the whole system and the spare server configuration.
|
warning | |||
error | |||
Compatibility of Server Model (*) | SPARE_SVR_COMPATX (X is a number from 0 - 255) | ["modelA","modelB"] | Define compatible server models as a group. When checking the L-Server definition and the spare server configuration, the server models in the same group are the target of switchover. Examples of server models are as below.
|
* Note: The value of SPARE_SVR_COMPAT is changeable. Server switchover may fail depending on the combination of changed values, such as when a server with no compatibility is set as a spare server.
# Spare server check configuration # Spare server check logic's policy: skip | warning | error OVERALL_POLICY=skip # Server model compatibility list SPARE_SVR_COMPAT0=["BX920 S1", "BX920 S2"] |
