You may wish to periodically delete certain log files to manage the size of the logs, for example. This can be done with the utility called logeraser, which is installed in the standard set of
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Processing Algorithm
All processed files are divided in several independently named file sets, defined by the file mask and identified by name. Each file set processed independently and has its own parameters.
- All files in file set older than 'black files age' are deleted unconditionally.
- All files in file set younger than 'white files age' are kept unconditionally.
- Files older than 'zip files age' are zipped.
- Files older than 'white age' but younger than 'black age', called 'gray files,' are removed, in order from oldest to newest, provided that free disk space in percents is less than 'start threshold' parameter. This process finishes when all gray files are removed or free disk space raises up to 'Finish threshold' parameter.
Command Line Options for logeraser
The short reference by logeraser command line option is printed when the utility runs without parameters:
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server32b:/shar/srv/EnterpriseWizard # ./bin/logeraser usage: Usage -B,--black Black files age for configured file set -D,--directory Directory for configured file set -E,--before Insert new fileset before named -F,--fileset File set name for subsequent usage -M,--mask File names mask for configured file set -R,--remove Remove file set from config -S,--subdirs Process subdirectories for configured file set -T,--finishthreshold Finish threshold value -W,--white White files age for configured file set -Z,--zip Zip files age for configured file set -c,--console Output to console -i,--info Print current configuration -n,--dryrun Dry run (no files removed) -r,--run Do erase old log files -t,--startthreshold Start threshold value -v,--verbose Verbose output |
Print Current Configuration
Use the option -i to print the current configuration:
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server32b:/shar/srv/EnterpriseWizard # ./bin/logeraser -i
Main parameters:
Installation root : /shar/srv/EnterpriseWizard
Log file : /shar/srv/EnterpriseWizard/logs/logeraser.log
Start threshold : 50
Finish threshold : 55
File sets:
name : jbosslogs
Directory : /shar/srv/EnterpriseWizard/jboss/server/sw/log
File mask : .+\.log.*
Process subdirs : false
Delete older than : 30 days (Sat Feb 13 04:11:38 GMT+00:00 2010)
Keep younger than : 7 days (Mon Mar 08 04:11:38 GMT+00:00 2010)
Zip older than : 2 days (Sat Mar 13 04:11:38 GMT+00:00 2010)
name : hprofs
Directory : /shar/srv/EnterpriseWizard/jboss/bin
File mask : .+\.hprof
Process subdirs : false
Delete older than : 30 days (Sat Feb 13 04:11:38 GMT+00:00 2010)
Keep younger than : not set
Zip older than : not set
name : temps
Directory : /shar/srv/EnterpriseWizard/tmp
File mask : .+
Process subdirs : true
Delete older than : 30 days (Sat Feb 13 04:11:38 GMT+00:00 2010)
Keep younger than : not set
Zip older than : not set
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File Sets
The three file sets defined here for processing are:
- jbosslogs – consists of all files in
/shar/srv/EnterpriseWizard/jboss/server/sw/logdirectory with.login their name. Note that file mask here is a regular expression, not an OS file mask pattern. - hprofs – consists of files with suffix
.hprofin/shar/srv/EnterpriseWizard/jboss/bindirectory. - temps – consists of all files in
/shar/srv/EnterpriseWizard/tmpdirectory.
Note: these three file sets are standard and created automatically. In the example above, the root directory for
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/shar/srv/EnterpriseWizard – your configuration may differ.Changing Parameters
The option -F is used to reference some file set in order to change its parameters.
Example
For example, to change the 'black' files age from 30 days to 15 days, execute the command:
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server32b:/shar/srv/EnterpriseWizard # ./bin/logeraser -F jbosslogs -B 15 -i |
The following output is received. Note that the resulting configuration is printed because the -i option is given.
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server32b:/shar/srv/EnterpriseWizard # ./bin/logeraser -F jbosslogs -B 15 -i
Main parameters:
Installation root : /shar/srv/EnterpriseWizard
Log file : /shar/srv/EnterpriseWizard/logs/logeraser.log
Start threshold : 50
Finish threshold : 55
File sets:
name : jbosslogs
Directory : /shar/srv/EnterpriseWizard/jboss/server/sw/log
File mask : .+\.log.*
Process subdirs : false
Delete older than : 15 days (Sun Feb 28 05:08:04 GMT+00:00 2010)
Keep younger than : 7 days (Mon Mar 08 05:08:04 GMT+00:00 2010)
Zip older than : 2 days (Sat Mar 13 05:08:04 GMT+00:00 2010)
name : hprofs
Directory : /shar/srv/EnterpriseWizard/jboss/bin
File mask : .+\.hprof
Process subdirs : false
Delete older than : 30 days (Sat Feb 13 05:08:04 GMT+00:00 2010)
Keep younger than : not set
Zip older than : not set
name : temps
Directory : /shar/srv/EnterpriseWizard/tmp
File mask : .+
Process subdirs : true
Delete older than : 30 days (Sat Feb 13 05:08:04 GMT+00:00 2010)
Keep younger than : not set
Zip older than : not set
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Test File Processing
You can see which files will be processed by doing a 'dry run' using the -n option.
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server32b:/shar/srv/EnterpriseWizard # ./bin/logeraser -F jbosslogs -n -r -v -c |
Logeraser Log Files
The log files from running logeraser itself, such as what was processed and when, are stored in <root>/logs directory and named logeraser.log.
Files are rotated.
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