Registry and Registry Proxy

Registry provides the Service Discovery capabilities to Opsview. At least one copy of the package has to be installed in case of single-node cluster. It can be installed on any server that is reachable from all the other servers, see Ports. When part of the cluster, it will exchange heartbeats with other nodes every 0.1s (configurable).

Dependencies

Registry Proxy provides access to the Registry component using Loadbalancer. Please make sure you have the loadbalancer installed, configured and running before attempting to start the opsview-registry process

Installation

Refer to Advanced Automated Installation.

Configuration

We ship the opsview-registry with a default configuration which can be modified or overridden by the user.

• default setting: /opt/opsview/registry/etc/registry.defaults.yaml
• custom setting example: /opt/opsview/registry/etc/registry.yaml.example
• user settings: /opt/opsview/registry/etc/registry.yaml

Default setting settings are restored on upgrade/installation, user settings are left as defined by the user. The setting files follow the YAML file format, setting are stored on a <setting_name>: format.

The custom setting example contains an example on how to override default value.

Configuration options

• data_dir: Path to the data directory
• wal_dir: Path to the dedicated wal directory, this allows a dedicated disk to be used, and helps avoid io competition between logging and other IO operations.
• snapshot_count: Number of committed transactions to trigger a snapshot to disk
• heartbeat_interval: Time (in milliseconds) of a heartbeat interval
• election_timeout: Time (in milliseconds) for an election to timeout
• listen_peer_port: Port to listen on for peer traffic.
• listen_client_port: Port to listen on for client traffic.

Management

Configuration

DPKGs

Watchdog service files are now managed by the package, doing a remove would leave the watchdog service file behind with a .save extension. Purging the package will remove it. The package managed config files are as follows:

/opt/opsview/watchdog/etc/services/opsview-registry.conf
/opt/opsview/loadbalancer/etc/registry-proxy.cfg

RPMs

Watchdog service files are now managed by the package. Any modifications will be saved at upgrade and remove processes with the .rpmnew and .rpmsave extenstions correspondingly.

/opt/opsview/watchdog/etc/services/opsview-registry.conf
/opt/opsview/loadbalancer/etc/registry-proxy.cfg

Service Administration

Warning

Restarting or stopping registry will trigger a failure in the majority of Opsview Monitor components.

As root, start, stop and restart the service using:

/opt/opsview/watchdog/bin/opsview-monit <start|stop|restart> opsview-registry