OCLUMON Command Reference

Use the command-line tool to query the Cluster Health Monitor repository to display node-specific metrics for a specific time period.

Use OCLUMON to perform miscellaneous administrative tasks, such as changing the debug levels, querying the version of Cluster Health Monitor, and changing the metrics database size.

oclumon analyze

The oclumon analyze command analyzes Cluster Health Monitor (CHM) metrics and writes text or HTML reports to a specified output directory. It supports archived metric repositories, configurable logging, and optional start and end timestamps to limit the analysis period. Reports include system configuration and resource statistics, observed findings with a timeline, and detailed contextual information about detected problems.

oclumon dumpnodeview

The oclumon dumpnodeview command displays system monitor data as node views for CPU, processes, aggregated processes, disks, network interfaces, filesystems, threads, Buddyinfo, NFS, and network protocols. It supports verbose and detailed output, filtering, sorting, row limits, sampling intervals, complete-sample selection, historical time ranges, duration-based queries, and reading metrics or logs from specified directories.

oclumon chmdiag

The oclumon chmdiag command describes supported CHMDiag events and actions, queries event or action records, and collects diagnostic data for a selected time period or duration. Description and query reports can be generated in text or interactive HTML format, while queries and collections can be filtered by event IDs, action IDs, components, timestamps, or recent duration; collected data may also be compressed.

oclumon localrepo

The oclumon localrepo command displays and changes local repository configuration across Cluster Health Monitor nodes. The getconfig operation reports repository size, path, and estimated retention time for all, local, or selected nodes, while setconfig changes the repository size in megabytes for all nodes.

oclumon version

The oclumon version command displays the installed Cluster Health Monitor release and version information.

oclumon debug

The oclumon debug command adjusts logging levels for supported Cluster Health Monitor daemons and modules or displays daemon versions. Logging levels range from 0, which provides minimal logging, to 3, which provides maximum logging; supported targets include osysmond, client, individual modules, and all components.
Read More: oclumon debug