When multiple users or services use the same Lindorm cluster, resource preemption always occurs. Some important online services may be adversely affected by batch reads and writes of offline services. Alibaba Cloud Lindorm clusters provide the group management feature to isolate resources of multiple tenants. To isolate the resources, assign LDServers to different groups and store different tables in the group.
Group1 is created and LDServer1 and LDServer2 are assigned to Group1. Group2 is created and LDServer3 and LDServer4 are assigned to Group2. In addition, the requests to Table1 and Table2 are sent to the group that contains LDServer1. In this case, all the regions of Table1 and Table2 are distributed to LDServer1 and LDServer2 in Group1.
Similarly, all the regions of Table3 and Table4 are distributed to LDServer3 and LDServer4 in Group2 for load distribution and balancing. Therefore, the requests to Table1 and Table2 are sent to LDServer1 and LDServer2. The requests to Table3 and Table4 are sent to LDServer3 and LDServer4. This helps you isolate resources.
View group information
Create a group
In the Group overview section on the Cluster overview tab in Lindorm Insight, choose to create a group. After a group is created, the number of servers and the number of tables in the group are both 0. You must move servers and tables to this group later.
Move an LDServer to a group
By default, all the LDServers belong to the default group. You must move LDServers to the required group before you use them.
- If you move a table to a group that does not contain LDServers, the region of the table cannot be accessed because no online servers are available.
- We recommend that you assign at least two LDServers to each group. This way, when one of the LDServers breaks down, the region data of the table can be migrated to the other LDServer in the group. If only one LDServer is assigned to a group and the only LDServer breaks down, all the tables in the group cannot be accessed.
- After you move an LDServer to a group, the online regions on this LDServer are immediately and evenly distributed among all the other LDServers in the group.