StackLight LMA resource requirements per cloud size

StackLight LMA resource requirements per cloud size

Compact cloud

The following table summarizes resource requirements of all StackLight LMA node roles for compact clouds (up to 50 compute nodes and Ceph OSD nodes, if any).

Resource requirements per StackLight LMA role for compact cloud

Virtual server roles

# of instances

CPU vCores per instance

Memory (GB) per instance

Disk space (GB) per instance

Disk type

mon

3

4

16

500 0

SSD

mtr

3

4

32

1000 0

SSD

log

3

4

32

2000 1

SSD

Cloud Provider Infrastructure (CPI)

The following table summarizes resource requirements of all StackLight LMA node roles for CPI clouds (50 - 150 compute nodes and Ceph OSD nodes, if any).

Resource requirements per StackLight LMA role for CPI

Virtual server roles

# of instances

CPU vCores per instance

Memory (GB) per instance

Disk space (GB) per instance

Disk type

mon

3

8

32

500 0

SSD

mtr

3

8

32

2000 0

SSD

log

3

8

48

3000 1

SSD

Large cloud

The following table summarizes resource requirements of all StackLight LMA node roles for large clouds (200 - 500 compute nodes and Ceph OSD nodes, if any).

Resource requirements per StackLight LMA role for large cloud

Virtual server roles

# of instances

CPU vCores per instance

Memory (GB) per instance

Disk space (GB) per instance

Disk type

mon

3

24

256

1000 0

SSD

mtr

3

16

196

3000 0

SSD

log

3

16

64 2

5000 1

SSD

0(1,2,3,4,5,6)

The required disk space per instance depends on the Prometheus retention policy, which by default is 5 days for mon nodes and 180 days for mtr nodes.

1(1,2,3)

The required disk space per instance depends on the Elasticsearch retention policy, which is 31 days by default.

2

The Elasticsearch heap size must not exceed 32 GB. For details, see Limiting memory usage. To limit the heap size, see MCP Operations Guide: Configure Elasticsearch.