Hardware Requirements
The hardware requirements for your High Availability Add-on (HAA) are different between development and production environments.
Development Environments
| Item | Minimum Requirements | Recommended |
|---|---|---|
| HAA Nodes | 1 | 3+ |
| RAM | 6 GB | 8 GB |
| Storage | 10 GB | 20 GB |
While one node is sufficient for a development environment, three or an odd number of nodes are recommended in order to utilize the clustering features likely needed for your production environment.
Production Environments
| Item | Minimum Requirements | Recommended |
|---|---|---|
| HAA Nodes | 3 | 3+ |
| Cores per Node | 4 | 8+ |
| RAM | 6 GB (15 GB for DR deployments) | 30+ GB |
| Storage | 75 GB | 150+ GB |
| Network | 1 G | 10+ G |
Note: Always maintain an odd number of nodes. This is required to obtain a quorum needed in failure and failover scenarios.
TCP Ports
| Port | Description |
|---|---|
| 1968 | Default port used for internal proxy traffic. |
| 3333-3339 36379-36380 | Default port ranges used for internal cluster traffic. |
| 8001 | Used for traffic from the application to the Discovery Service, if applicable. |
| 8443 | Used for HTTPS access to the management UI. |
| 8444 , 9080 | Default ports used for internal nginx < - > cnm_http/cm traffic. |
| 9081 | Default port used for internal CRDB (Conflict-free Replicated Database) traffic. |
| 8070-8071 | Used for metrics exported and managed by nginx. |
| 9443 | Recommended port for REST API traffic. |
| 10000-19999 | Port range for database traffic. By default, HAA uses port 10000. |
| 20000-29999 | Port range used for internal database shards traffic. |
| 53, 5353 | Used for internal DNS/mDNS traffic. |
Software Requirements
Important!
HAA only supports 64-bit operating systems and must be installed on a clean host with no other applications and synchronized with the same NTP server.
| Platform | Supported Versions |
|---|---|
| RHEL/CentOS 7 | 7.0 - 7.8 (Requires at least Minimal Install configuration) Note: If using v7.8`, Open SSL 1.0.2 and fw config are required. |
Updated about a month ago