mirror of https://github.com/apache/cloudstack.git
- Enhances the Host connecting logic to avoid connecting storm (where Agent opens multiple sockets against Management Server). - Implements HostConnectProcess task where Host upon connection checks whether lock is available, traces Host connecting progress, status and timeout. - Introduces AgentConnectStatusCommand, where Host checks whether lock for the Host is available (i.e. "previous" connect process is finished). - Implementes logic to check whether Management Server has lock against Host (exposed MySQL DB lock presence via API) - Removes synchronization on Host disconnect process, double-disconnect logic in clustered Management Server environment, added early removal from ping map (in case of combination ping timeout delay + synchronized disconnect process the Agent Manager submits more disconnect requests) - Introduces parameterized connection and status check timeouts - Implements backoff algorithm abstraction - can be used either constant backoff timeout or exponential with jitter to wait between connection Host attempts to Management Server - Implements ServerAttache to be used on the Agent side of communication (similar to Attache on Management Server side) - Enhances/Adds logs significantly to Host Agent and Agent Manager logic to trace Host connecting and disconnecting process, including ids, names, context UUIDs and timings (how much time took overall initialization/deinitialization) - Adds logs to communication between Management Servers (PDU requests) - Adds DB indexes to improve search performance, uses IDEMPOTENT_ADD_INDEX for safer DB schema updates |
||
|---|---|---|
| .. | ||
| src | ||
| pom.xml | ||