This topic describes the processes of OceanBase Cloud Platform (OCP).
Process description
OBServer
This section describes business-related processes that run on an OBServer. Note
ocp_agent and ocp_monitor are not actual processes. They are two collections of processes. You can start or stop them by using the ocp_agent_ctl.py script.
After a host is added in OCP, the ocp_agent processes automatically start. Exceptions of ocp_agent processes may cause the host to become offline.
After an OBServer is deployed through OCP, the ocp_monitor processes automatically start. Exceptions of an ocp_monitor process may cause TopSQL monitoring,plan cache monitoring, or OceanBase log alerts to become unavailable.
| Process | Listening port | Start-stop method | Purpose and description |
|---|---|---|---|
| ocp_agentd | - | The process automatically starts when an ocp-agent process starts and automatically stops when it has no process to guard. | It guards all the ocp_agent processes. You must stop the ocp_agentd process before terminating other ocp_agent processes. Otherwise, the ocp_agentd process will start them again. |
| pos_proxy | 62888 | Starts or stops along with the ocp_agent processes. | Provides the OCP Server with the capability of running remote commands through RPC. |
| node_exporter | 63000 | Starts or stops along with ocp_agent processes. | A third-party component for collecting host hardware specifications. |
| ocp_exporter | 62889 | Starts or stops along with ocp_agent processes. | Depends on the node_exporter process to collect monitoring metrics of OceanBase services on the host, and provides an interface for the Prometheus exporter to obtain metrics. |
| obstat2 | - | Starts or stops along with ob_monitor. | Monitors the top SQL and plan cache of the OBServer. |
| ob_logtailer | - | Starts or stops along with ob_monitor. | Generates alerts based on OBServer logs. |
| ob_cleaner | - | Starts or stops along with ob_monitor. | Clears OBServer log files. |
OCP Server
This section describes business-related processes that run on an OCP server.
| Process | Listening port | Description |
|---|---|---|
| ocp-server | - | Remotely manages the host and retrieves monitoring metrics. The startup of the ocp_exporter, obstat2, and ob_logtailer processes depends on the normal running of the ocp-server process. |
OBProxy server
This section describes business-related processes that run on an OBProxy server.
| Process | Listening port | Description |
|---|---|---|
| obproxyd | - | The daemon of OBProxy. |
| obproxy | - | Enables the OceanBase access proxy. |
