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8.5. Monitoring Node and Gear Activity
Problems with node hosts can affect a single gear, several gears, or all the gears on the host. A common indication of a node host problem is an inability to create or remove gears on that host.
8.5.1. Default Node Log File Locations
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By default, node components write log messages locally to their configured log file destination. The following table provides the default locations of important log files for node components, summarizes the information they contain, and identifies the configuration setting that changes their default location:
| File | Description | Configuration Setting |
|---|---|---|
/var/log/openshift/node/platform.log | Primary log for node platform actions including MCollective actions performed on the node host. | PLATFORM_LOG_FILE setting in /etc/openshift/node.conf. |
/var/log/openshift/node/platform-trace.log | Logs node platform trace actions. | PLATFORM_TRACE_LOG_FILE setting in /etc/openshift/node.conf. |
/var/log/openshift/node/ruby193-mcollective.log | Logs MCollective messages communicated between broker and node hosts. Read to confirm proper gear creation. | logfile setting in /opt/rh/ruby193/root/etc/mcollective/server.cfg. |
/var/log/httpd/openshift_log | Logs gear access from the front-end Apache. | APACHE_ACCESS_LOG setting in /etc/openshift/node.conf. |
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