CouchDB Logs Test
The CouchDB logs are a vast source of information related to errors and warnings that a CouchDB server encounters. Administrators use these log files not only to spot problem conditions, but also to troubleshoot them. By periodically scanning the CouchDB error log for errors/warnings, the CouchDB Logs test promptly notifies administrators as soon as a new error/ warning error is logged in the file. Detailed diagnostics of the test clearly indicate what error it is and when it occurred, so as to aid troubleshooting efforts.
As messages keep getting logged in the log files, these log files grow large in size. If log file growth is left unchecked, it can consume all available space in the database. Administrators can effectively tracklog file growth and initiate measures to control it using the CouchDB Logs test. The test reports the current size of the log files and their growth rate, and proactively alerts administrators if the rate of growth is abnormal.
Target of the test : Apache CouchDB Server
Agent deploying the test : An internal/remote agent
Outputs of the test : One set of results for the target Apache CouchDB Server.
Parameter | Description |
---|---|
Test period |
How often should the test be executed. |
Host |
The IP address of the target server that is being monitored. |
Port |
The port number through which the Couchdb server communicates. The default port is 5984. |
Username |
In order to monitor an Apache CouchDB server, a special database user account with Admin privilege has to be created in every Apache CouchDB server instance that requires monitoring. In the Username text box, specify the Username for monitoring the target Apache CouchDB server instance.To create a new user, refer Pre-requisites for Monitoring Apache CouchDB topic. |
Password |
Specify the password of the specified Username. |
Confirm Password |
Confirm the password by retyping it here. |
ISUTF 16 |
Set this flag to Yes, if the test needs to use the UTF-16 encoding format for reading the specified log files. By default, this flag is set to No. |
File Path |
Specify the full path to the log file that is to be read by the test to pull out the metrics. |
DD Frequency |
Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time the test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD Frequency. |
Detailed Diagnosis |
To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option. The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:
|
Measurement | Description | Measurement Unit | Interpretation |
---|---|---|---|
Total messages |
Indicates the total number of messages in the log file. |
Number |
|
Alert messages |
Indicates the number the alert messages in the log file. |
Number |
|
Critical messages |
Indicates the number of critical messages in the log file. |
Number |
Ideally, the value of this measure should be 0. If a non-zero value is reported, you can use the detailed diagnosis of this measure to know what error occurred and when. |
Debug messages |
Indicates the number of debug messages in the log file. |
Number |
|
Emergency messages |
Indicates the number of emergency messages in the log file. |
Number |
Ideally, the value of this measure should be 0. If a non-zero value is reported, you can use the detailed diagnosis of this measure to know what error occurred and when. |
Info messages |
Indicates the number of info messages in the log file. |
Number |
|
Error messages |
Indicates the number of error messages in the log file. |
Number |
Ideally, the value of this measure should be 0. If a non-zero value is reported, you can use the detailed diagnosis of this measure to know what error occurred and when. |
Notice messages |
Indicates the number of notice messages in the log file. |
Number |
|
Warning messages |
Indicates the number of warning messages in the log file. |
Number |
Ideally, the value of this measure should be 0. If a non-zero value is reported, you can use the detailed diagnosis of this measure to know what error occurred and when. |
File size |
Indicates the current size of the log file. |
MB |
|
Growth rate |
Indicates the rate at which the log file is growing. |
MB/sec |
A high value for this measure or a consistent increase in its value indicates that the Apache CouchDB log is rapidly growing and may end up occupying too much space on the volume. |