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Limitations and Constraints

Restrictions on Clusters and Nodes

The following table describes restrictions on clusters and nodes in CSS.

Table 1 Restrictions on clusters and nodes

Cluster and Node

Restriction

Maximum number of nodes in a cluster

Default: 32. Maximum: 200. To change the default value, contact customer service.

Minimum number of nodes in a cluster

1

Restrictions on the EVS Disk Size

The following table lists the minimum capacity and maximum capacity of EVS disks corresponding to node types supported by CSS.

Table 2 Restrictions on the EVS disk size (x86)

Node Type

Minimum EVS Disk Capacity (GB)

Maximum EVS Disk Capacity (GB)

ess.spec-2u16g

40

1,280

ess.spec-4u8g

40

800

ess.spec-4u16g

40

1,600

ess.spec-4u32g

40

2,560

ess.spec-8u16g

80

1,600

ess.spec-8u32g

80

3,200

ess.spec-8u64g

80

5,120

ess.spec-16u32g

100

3,200

ess.spec-16u64g

100

6,400

ess.spec-16u128g

160

10,240

ess.spec-32u64g

320

10,240

ess.spec-32u128g

160

10,240

ess.spec-32u256g

320

20,480
Table 3 Restrictions on the EVS disk size (Kunpeng)

Node Type

Minimum EVS Disk Capacity (GB)

Maximum EVS Disk Capacity (GB)

ess.spec-kc1.xlarge.2

40

1,280

ess.spec-kc1.xlarge.4

40

2,560

ess.spec-kc1.2xlarge.2

40

2,560

ess.spec-kc1.2xlarge.4

100

5,120

ess.spec-kc1.4xlarge.2

100

5,120

ess.spec-kc1.4xlarge.4

100

10,240

ess.spec-kc1.8xlarge.2

100

10,240

ess.spec-kc1.8xlarge.4

100

10,240

ess.spec-kc1.12xlarge.2

100

10,240

ess.spec-kc1.15xlarge.2

100

10,240

Restrictions on Browsers

  • You are advised to use the following browsers to access the CSS management console:
    • Google Chrome 36.0 or later
    • Mozilla Firefox 35.0 or later
    • Internet Explorer 9.0 or later

      If you use Internet Explorer 9.0, you may fail to log in to the CSS management console because user Administrator is disabled by default in some Windows systems, such as Windows 7 Ultimate. The Internet Explorer automatically selects a system user for installation. As a result, the Internet Explorer cannot access the management console. Reinstall Internet Explorer 9.0 or later (recommended) or run Internet Explorer 9.0 as user Administrator.

  • You are advised to use the following browsers to access Kibana integrated in CSS:
    • Google Chrome 36.0 or later
    • Mozilla Firefox 35.0 or later
    • Internet Explorer 11.0 or later (Internet Explorer 9 is not supported.)