For details on how to build the cluster application, refer to "Chapter 6 Building Cluster Applications" in "PRIMECLUSTER Installation and Administration Guide."
When using the mirroring among servers, set the mirroring among servers of GDS (creating netmirror volume) while building the cluster application.
Note
Note the following points when performing the settings in "Setting Tuning Parameters" in "PRIMECLUSTER Global Disk Services Configuration and Administration Guide."
Among the tuning parameters to be set, set the following values for the following tuning parameters.
Tuning parameter name | Value after change |
|---|---|
ED_CMD_RETRY_COUNT | 100 |
ED_DRV_RETRY_COUNT | 100 |
Example:
ED_CMD_RETRY_COUNT=100 ED_DRV_RETRY_COUNT=100
To extend the timeout period (CLUSTER_TIMEOUT) of the CF heartbeat, change the above parameter values according to the following formula. Round up the values after the decimal point.
Calculation formula:
<Increased CLUSTER_TIMEOUT> / 3 + 100
Example: If the timeout period is extended from the default value of 10 seconds to 20 seconds.
(20 - 10) / 3 + 100 = 104 seconds (Round up the value after the decimal point)
Set the following tuning parameter in /etc/opt/FJSVsdx/sdx.cf.
SDX_NETMIRROR_IO_BLOCKADE=1
Comment out the following tuning parameter in /etc/opt/FJSVsdx/modules/sfdsk.conf and disable the slice preceding degenerated option.
SDX_NETMIRROR_PRE_DETACH=1;
Example:
#SDX_NETMIRROR_PRE_DETACH=1;
Note the following setting in "Checking and Setting Required Packages" in "PRIMECLUSTER Global Disk Services Configuration and Administration Guide."
Add "smawcf.service" to the value "After" in /etc/systemd/system/fjsvsdx.service.d/netmirror.conf.
Example:
After=target.service smawcf.service
If the icmp communication between cluster nodes is not allowed in the security group configuration, the following message is displayed when the clchkcluster command is executed.
Admin IP <IP address> used by SF is not alive.If this message is output, refer to "8.3.2.1 Rules Applied to the Administrative LAN", and set the icmp protocol rule to allow the icmp communication between cluster nodes. After that, execute the clchkcluster command again.
When using the Symfoware Server (Native) Hot Standby feature, the standby and scalable userApplication configurations are required.
Set the standby userApplication attribute to the following value.
Attribute | Setup value |
StandbyTransitions | ClearFaultRequest | SwitchRequest |
Refer to "6) Scalable operation" in "6.7 Setting Up Cluster Applications" in the "PRIMECLUSTER Installation and Administration Guide" for detailed build instructions.