This topic explains how to read and interpret logs. The log file contains the date and time at which any action or operation occurred, the name of the action executed, a letter(s) that indicates of which type the explanation following is, the ID of the thread and the description itself. The following table lists some of the letters and their description.
When installing a master with the default parameters on Linux CentOS 7 x64 with a PostgreSQL database on the same device at the end of the installation, an error may appear in the log file. For details on how to resolve this error, refer to Troubleshooting installations on CentOS 7.