PMDABPFTRACE(1) General Commands Manual PMDABPFTRACE(1)
pmdabpftrace - bpftrace PMDA
pmdabpftrace is a Performance Co-Pilot (PCP) Performance Metrics Domain Agent (PMDA) which exports metrics from bpftrace(8) scripts.
pmdabpftrace reads an optional ini-style configuration file: $PCP_PMDAS_DIR/bpftrace/bpftrace.conf This file may contain [bpftrace] and [dynamic_scripts] sections. If you enable the dynamic scripts functionality, please refer to https://pcp.io/docs/lab.auth.html on how to setup authentication. This is highly recommended, as otherwise anyone could run any bpftrace(8) script as root. [bpftrace] section specifies values for the following settings (their default values are shown in parenthesis): bpftrace_path (bpftrace) Path to the bpftrace(8) executable. script_expiry_time (60) Unnamed scripts are removed after this period of time (in seconds) in case there has been no requests for their values. max_throughput (2097152) Maximum throughput of bpftrace scripts in bytes. [dynamic_scripts] section specifies values for the following settings (their default values are shown in parenthesis): enabled (false) A boolean value to specify whether script should be started on demand, by executing pmStore (3) bpftrace.control.register. This feature needs to be enabled for the PCP bpftrace datasource in grafana-pcp. auth_enabled (true) A boolean value to specify whether authentication is required or not. Please see the note above on authentication setup. allowed_users (root) A comma-separated list of usernames which are allowed to register bpftrace(8) scripts.
To install, the following must be done as root: # cd $PCP_PMDAS_DIR/bpftrace # ./Install To uninstall, the following must be done as root: # cd $PCP_PMDAS_DIR/bpftrace # ./Remove pmdabpftrace is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed.
$PCP_PMDAS_DIR/bpftrace/bpftrace.conf configuration file for the pmdabpftrace agent $PCP_PMDAS_DIR/bpftrace/Install installation script for the pmdabpftrace agent $PCP_PMDAS_DIR/bpftrace/Remove undo installation script for the pmdabpftrace agent $PCP_LOG_DIR/pmcd/bpftrace.log default log file for messages from the pmdabpftrace agent Note that the usual/default value for $PCP_PMDAS_DIR is /var/lib/pcp/pmdas and the default for $PCP_LOG_DIR is /var/log/pcp but these settings are platform dependent.
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configuration file, as described in pcp.conf(5).
PCPIntro(1), pmcd(1) and bpftrace(8).
This page is part of the PCP (Performance Co-Pilot) project. Information about the project can be found at ⟨http://www.pcp.io/⟩. If you have a bug report for this manual page, send it to firstname.lastname@example.org. This page was obtained from the project's upstream Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on 2021-06-20. (At that time, the date of the most recent commit that was found in the repository was 2021-06-19.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which is not part of the original manual page), send a mail to email@example.com Performance Co-Pilot PCP PMDABPFTRACE(1)
Pages that refer to this page: pcpcompat(1)