This section explains the range of support of PRIMECLUSTER in a FUJITSU Cloud Service for OSS Environment.
Number of cluster nodes: Two nodes
Operation mode of the cluster system: 1:1 Standby operation, Mutual standby
Network configurations
The virtual servers and the management client in the cluster system must belong to the same availability zone and subnet.
For the cluster interconnect, its network must be independent from the network used with the administrative LAN, the public LAN, and the mirroring among the servers of GDS.
The virtual servers in the cluster system must communicate with the API endpoints.
Security groups
One security group must be set among the virtual servers in the cluster system for a security reason.
Another security group must be set between the virtual servers and the management client in the cluster system.
The security group for the cluster interconnect must be set so that the node cannot communicate with any node outside of the cluster system.
Failure of OS on the virtual server and the cluster interconnect
The cyclic monitoring of the cluster interconnect (LAN) detects a hang-up and the system is switched to the standby system.
Failure of the shared disk and disk access path
By combining the volume management function (GDS), a failure of the disk access and disk access path can be detected (monitored by the Gds resource), and the system is switched to the standby system when the disk access is disabled or a failure of the whole system of the disk access path occurs.
Cluster application failure
The system is switched to the standby system when a resource failure of the cluster application occurs.
Note
PRIMECLUSTER cannot be used in the virtual server built in a separate availability zone.
Set each virtual server so as to start it on each individual physical host.
To take over the data from one virtual server to the other virtual server, setting the mirroring among the servers of GDS is required.
To take over IP address of the virtual server, setting the virtual NIC mode for Global Link Services (hereinafter GLS) is required.
The snapshot to the virtual server can be acquired only when OS is stopped.
The following functions for PRIMECLUSTER are not available:
Global File Services
GDS Snapshot
Root class and local class of GDS
Single volume of GDS, and disk groups of GDS other than the netmirror type (mirror, stripe, concatenation, and switch)
Scalable operation
Cluster application using the takeover network resource
The following functions for FUJITSU Cloud Service for OSS are not available:
Auto-scaling
Automatic failover
Duplicate virtual server names cannot be used in the project on FUJITSU Cloud Service for OSS.
The console cannot be used in the virtual server in a FUJITSU Cloud Service for OSS environment. Do not set the single user mode.
Symfoware Server(Native) cannot be used.
