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Top Forums UNIX for Beginners Questions & Answers CentOS 6 ran out of space, need to reclaim it Post 303038144 by Neo on Monday 26th of August 2019 10:38:37 PM
Old 08-26-2019
DannyBoyCentOS,

You will benefit from thinking about what you are saying about log files.

Code:
Neo: Rebooting does not automatically delete log-files on normally configured Linux systems., FYI.

DannyBoyCentOS:  What does, then?

Any system which would automatically delete log files on reboot would be a seriously misconfigured system.

Log files are the single most important tool any system administrator has to deal with configuration errors, security breaches, system errors, access control issues, database errors, and more.

Without logging "all is lost".... as one might say, so no normally configured Linux system automatically deletes a single log file during the boot process. When you post like this, an experienced Linux user like me (over two decades of Linux system admin) can only conclude you have very little experience on a server. So let me explain to you again.

Log files should never be automatically deleted on reboot because that means anytime the system reboots, all that logging information would be lost; and a server can reboot for a variety of reasons. Log files are generally rotated and compressed and saved by the system; and then they are generally archived for a certain period of time, and then eventually deleted manually. The could be deleted automatically after some set period of time, but that should normally be a few weeks out (actually it depends on the size of storage, system criticality, system usages and other site specific factors).

In your output, the big files I see are (mysql) dump files and backups. These are not log files, they are backups and dumps. Normally these files can get very big very quickly and need to be actively managed. I manage these on my servers by moving them to an archive site (generally another servers for that specific server); but how you choose to do that is entirely up to you.

Based on what I have seen in your output so far (which admittedly I did not spend too much time on it), the big files you have are .sql and .zip files. If you need disk space, move these to another disk, another server, the cloud or where ever you archive your large files, dumps and backups; and then decide what to keep and what to delete.

Cheers.
 

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nfslog.conf(4)						     Kernel Interfaces Manual						    nfslog.conf(4)

NAME
nfslog.conf - NFS server logging configuration file SYNOPSIS
DESCRIPTION
The file specifies the location of the NFS server logs, as well as the location of the private work files used by the NFS server and nfs- logd(1M) daemon during logging. Each entry in the file consists of a mandatory tag identifier and one or more parameter identifiers. The parameter identifier specifies the value or location of the specific parameter. For instance, the parameter identifier specifies the location of the NFS server activity log. The mandatory tag identifier serves as an index into the file to identify the various parameters to be used. At export time, the share_nfs(1M) command specifies the NFS server logging parameters to use by associating a tag from the file to the exported file system. It is legal for more than one file system to be exported using the same logging tag identifier. A "global" tag identifier is included in It specifies the default set of values to be used during logging. If no tag identifier is speci- fied at export time, then the values in the "global" entry are used. The "global" values can be modified by updating this entry in Each entry in the file must contain a mandatory tag identifier and at least one parameter/value pair. If a parameter is not specified in a given entry, the global value of the parameter will be used. The exact entry syntax follows: The entries are described here. Specifies the directory where the log and work files will be placed. This path is prepended to all relative paths specified in other parameters. Specifies the location of the user-readable log file. The log will be located in the unless path is an absolute path. Specifies the location of the private file handle to path mapping database files. These database files are for the private use of the NFS server kernel module and the daemon. These files will be located in the unless path is an absolute path. These database files are permanently stored in the file system. Consult nfslogd(1M) for information on pruning the database files. Specifies the location of the private work buffer file used by the NFS server kernel module to record raw RPC information. This file is later processed by the daemon, which in turn generates the user-readable log file. This work buffer file will be located in the unless path is an absolute path. Sets the format of the user-readable log file. If not specified, the format is used. The format is compatible with log files generated by the Washington University The for- mat provides a more detailed log, which includes directory modification operations not included in the basic format, such as and Note that the format is not compatible with Washington University's log format. WARNINGS
Log files, work files, and file handle to path mapping database can become very large. Be aware of appropriate placement within the file system name space. See nfslogd(1M) for information on pruning the database files and cycling logs. EXAMPLES
Example 1: Using the global Tag The tag may be modified so that all exported file systems that enabled logging use a common set of parameters that conform to the specific needs of the user. These values are used until a specific tag identifier overrides them. Example 2: Overriding the Global defaultdir and logformat Because log files can become very large, it may be desirable to store the log and work files in separate file systems. This can be easily accomplished by simply specifying a different for every file system exported by means of a unique tag: File systems shared with the engineering identifier will have their log and work files located in For instance, the log file will be located at Note that the engineering log file will be stored in the extended format, while the rest of the log files will remain in the basic format. Any of the parameters can be updated in a tag identifier, which overrides the global settings. SEE ALSO
nfslogd(1M), share_nfs(1M). nfslog.conf(4)
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