Overview
CDN 2.5 implements the following features in addition to CDN 2.1, 2.2, 2.3 и 2.4:
- remove nodes from CDN
Remove nodes from CDN
When a node leaves CDN, another nodes remember this node as PASSIVE and periodically try to restore connections to it. To prevent excessive reconnect attempts and actualize CDN state, since build 5.2.708 inactive node can be removed from CDN
Using REST API
REST API is used to remove node from CDN. The query should be sent to active CDN node.
REST query should be HTTP/HTTPS POST request as follows:
- HTTP: http://test.flashphoner.com:8081/rest-api/cdn/remove_node
- HTTPS: https://test.flashphoner.com:8444/rest-api/cdn/remove_node
Where:
- test.flashphoner.com - WCS server address
- 8081 - a standard WCS REST / HTTP port
- 8444 - a standard WCS HTTPS port
- rest-api - mandatory part of URL
- /cdn/remove_node - REST query used
REST queries and responses
REST query | REST query body example | REST query response example | Response states | Description |
|---|---|---|---|---|
/cdn/remove_node | {
"nodeId":"192.168.1.207"
}
| 200 – OK 400 - Bad request 404 - Node not found 500 – Internal Server Error | Remove node from CDN |
Parameters
| Parameter | Description | Example |
|---|---|---|
| nodeId | Node IP address to remove | 192.168.1.207 |
Known limits
Only PASSIVE node can be removed from CDN. The query will return "Active node can't be removed" while trying to remove ACTIVE node.
If node removed enter CDN again (for example, after restarting), another nodes will reconnect to it automatically.
Backward compatibility
A node can be removed from CDN only on CDN 2.5 nodes