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Special Forums UNIX and Linux Applications Infrastructure Monitoring Using Node-RED and MQTT to Monitor Server and Application Stats Post 303043733 by Neo on Wednesday 5th of February 2020 07:28:19 AM
Old 02-05-2020
Well, those changes did not help much.... looks like here is some "underground" process running every three hours causing the spikes:

Using Node-RED and MQTT to Monitor Server and Application Stats-screen-shot-2020-02-05-72457-pmjpg


I checked all the forum software and all the cron files on the server, but so far, no joy in finding the process causing the intermittent performance hit.
 

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CHEF-CLIENT(8)							    Chef Manual 						    CHEF-CLIENT(8)

NAME
chef-client - Runs a client node connecting to a chef-server. SYNOPSIS
chef-client (options) -S, --server CHEFSERVERURL The chef server URL -c, --config CONFIG The configuration file to use -d, --daemonize Daemonize the process -g, --group GROUP Group to set privilege to -i, --interval SECONDS Run chef-client periodically, in seconds -j, --json-attributes JSON_ATTRIBS Load attributes from a JSON file or URL -E, --environment ENVIRONMENT Set the Chef Environment on the node -l, --log_level LEVEL Set the log level (debug, info, warn, error, fatal) -L, --logfile LOGLOCATION Set the log file location, defaults to STDOUT - recommended for daemonizing -V, --verbose Ensures logging goes to STDOUT as well as to other configured log location(s). -N, --node-name NODE_NAME The node name for this client -o, --override-runlist Replace current run list with specified items -K, --validation_key KEY_FILE Set the validation key file location, used for registering new clients -k, --client_key KEY_FILE Set the client key file location -s, --splay SECONDS The splay time for running at intervals, in seconds -u, --user USER User to set privilege to -P, --pid PIDFILE Set the PID file location, defaults to /tmp/chef-client.pid --once Cancel any interval or splay options, run chef once and exit -v, --version Show chef version -h, --help Show this message DESCRIPTION
The Chef Client is where almost all of the work in Chef is done. It communicates with the Chef Server via REST, authenticates via Signed Header Authentication, and compiles and executes Cookbooks. A Chef Client does work on behalf of a Node. A single Chef Client can run recipes for multiple Nodes. Clients are where all the action happens - the Chef Server and Chef Expander are largely services that exist only to provide the Client with information. SEE ALSO
Full documentation for Chef and chef-client is located on the Chef wiki, http://wiki.opscode.com/display/chef/Home. AUTHOR
Chef was written by Adam Jacob adam@ospcode.com of Opscode (http://www.opscode.com), with contributions from the community. This manual page was written by Joshua Timberman joshua@opscode.com with help2man. Permission is granted to copy, distribute and / or modify this docu- ment under the terms of the Apache 2.0 License. On Debian systems, the complete text of the Apache 2.0 License can be found in /usr/share/common-licenses/Apache-2.0. Chef 10.12.0 June 2012 CHEF-CLIENT(8)
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