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Updated:April 25, 2023
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This document describes the procedure to create additional disk space in logging partition of Cisco Call Manager with High and Low WaterMark settings.
There are no specific requirements for this document.
The information in this document is based on these software and hardware versions:
Cisco Call Manager version 10.0.1-10000-24
Cisco Real-Time Monitoring Tool (RTMT) version 10.0(001)
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.
Tip: The information in this tech document also applies to adjust the watermark in RTMT for the Cisco IM and Presence Service Server.
Low WaterMark is a percentage value of the total logging disk space post which when you receive an alert, indicates the disk space is full by the configured percentage of Low WaterMark.
High WaterMark is a percentage value of the total logging disk space post which the older log files are purged.
High WaterMark Exceeded and Low WaterMark Exceeded are events that indicate the percentage of used disk space in the logging partition.
This event indicates that the percentage of used disk space in the log partition has exceeded the configured High Watermark.
This event indicates that the percentage of used disk space in the log partition has exceeded the configured Low WaterMark.
The threshold percentage value of both of these events could be configured in RTMT based on the requirement. By Default High WaterMark is set to 95% of the total logging partition and Low WaterMark is set to 90% of the total logging partition.
At times, a need arises when there is insufficient space in the Logging Partition and additional space needs to be created for certain activities in the call manager to take place. During such events, additional space could be created in the Logging Partition, and adjust the threshold values of High WaterMark and LowWaterMark respectively.
When the threshold value of High WaterMark is lowered, it would purge the older log files, and this would create additional disk space in the logging partition.
Adjust Low WaterMark
Launch RTMT, and log in to the desired cluster, and on the left pane navigate to System > Tool > Alert Central.
On the right pane, under System Right, click LogPartitionLowWaterMarkExceeded > Set Alert/Properties.
By default, Low WaterMark is set to 90%.
Set theLow WaterMark to a lower value, based on your requirement and then click Next.
Adjust High WaterMark
When on the right pane, under System Right, click LogPartitionHighWaterMarkExceeded > Set Alert/Properties.
By default, High WaterMark is set to 95%.
Set the High WaterMark to a lower value, based on your requirement, and then click Next.
The additional disk space is created in the logging partition. After you adjust the High and Low WaterMarks, it can be verified through the Show Status command on the CLI on the Call Manager.
Before the WaterMark was adjusted.
Host Name : publisher Date : Thu Jul 21, 2016 16:07:16 Time Zone : India Standard Time (Asia/Kolkata) Locale : en_US.UTF-8 Product Ver : 10.0.1.10000-24 Unified OS Version : 10.0.0.0-2