Cluster Logs
This article explains how to generate cluster logs on your Exasol system.
If you are experiencing general issues with the cluster operating system (COS), you need to provide a cluster log.
Prerequisites
You must have enough free disk space for the logs. For more information, see EXAsupport.
Procedure
The following examples use the c4 and confd_client command-line tools in a Linux terminal. For more information about these tools, see Exasol Deployment Tool (c4) and ConfD.
-
Connect to EXAClusterOS (COS) on the cluster using
c4 connect -t <DEPLOYMENT>[.<NODE>]/cos
. For example:If you do not specify a node, c4 will connect to the first active node in the deployment.
For more information about how to use
c4 connect
, see How to use c4. -
To find the name of the database, use the ConfD job db_list. For example:
-
To create a cluster log, use the EXAsupport tool . Specify the start date (
-s
) and end date (-t
) using the formatYYYY-MM-DD
. For example:If the log file was successfully created, you will see the following message containing the file name:
- Use CTRL+D or type
exit
to disconnect from COS. -
Copy the log file to your local computer by connecting to COS and using the
cat
command:Example:
Verification
To verify that the log was successfully copied, use the ls
command in the target folder on your local machine.
Example