Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

cron to clean tmp

Discussion in 'General Discussion' started by uacomm, Apr 15, 2011.

  1. uacomm

    uacomm Member

    Joined:
    Apr 15, 2011
    Messages:
    22
    Likes Received:
    0
    Trophy Points:
    51
    My /tmp directory get 100% full in every 3 to 4 days which cause most of services un-accessible until I clean up the /tmp manually.

    How can I set a cron to auto lean /tmp daily/
     
    #1 uacomm, Apr 15, 2011
  2. LinuxTechie

    LinuxTechie Well-Known Member

    Joined:
    Jan 22, 2011
    Messages:
    502
    Likes Received:
    5
    Trophy Points:
    68
    cPanel Access Level:
    Root Administrator
    Hello,

    I thinks you need to use tmpwatch.

    Definition: tmpwatch: The tmpwatch utility recursively searches through specified directories and removes files which have not been accessed in a specified period of time. Tmpwatch is normally used to clean up directories which are used for temporarily holding files (for example, /tmp). Tmpwatch ignores symlinks, won't switch filesystems and only removes empty directories and regular files.

    Please use the URL for cron details : /http://prefetch.net/blog/index.php/2009/05/01/automating-temporary-file-cleanup-with-tmpwatch/
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #2 LinuxTechie, Apr 15, 2011
  3. cPanelTristan

    cPanelTristan Quality Assurance Analyst
    Staff Member

    Joined:
    Oct 2, 2010
    Messages:
    7,608
    Likes Received:
    32
    Trophy Points:
    238
    Location:
    somewhere over the rainbow
    cPanel Access Level:
    Root Administrator
    Please ensure not to set the cron times or tmpwatch to clear /tmp in less then a 6 to 12 hour period. If you have it clearing files that are younger than 6-12 hours (I've seen some users set it at 5 minutes), you will break some components such as EasyApache from working when it compiles. This is because EasyApache will write some temporary files to /tmp and take longer than 5 minutes to run.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #3 cPanelTristan, Apr 15, 2011
  4. LinuxTechie

    LinuxTechie Well-Known Member

    Joined:
    Jan 22, 2011
    Messages:
    502
    Likes Received:
    5
    Trophy Points:
    68
    cPanel Access Level:
    Root Administrator
    Hey Friends,

    Yes, Tristan is true!
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #4 LinuxTechie, Apr 16, 2011
  5. uacomm

    uacomm Member

    Joined:
    Apr 15, 2011
    Messages:
    22
    Likes Received:
    0
    Trophy Points:
    51
    I have readout the above url for tmwatch but cannot understand how to set out it to clean in every 12 hours. So can you please give me step by step instructions that how can I set tmpwatch to clear it in every 12 hours.
     
    #5 uacomm, Apr 16, 2011
  6. kernow

    kernow Well-Known Member

    Joined:
    Jul 23, 2004
    Messages:
    920
    Likes Received:
    13
    Trophy Points:
    168
    cPanel Access Level:
    Root Administrator
    Here you go:
    Code:
    0 */4 * * * /usr/sbin/tmpwatch -am 12 /tmp
    Switches used:
    m - make the decision about deleting a file based on the file’s mtime
    a - remove all file types
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #6 kernow, Apr 17, 2011
    Last edited: Apr 17, 2011
  7. uacomm

    uacomm Member

    Joined:
    Apr 15, 2011
    Messages:
    22
    Likes Received:
    0
    Trophy Points:
    51
    I have set that cron but still /tmp get full some times. So how can I determine what actually is the problem? Why tmp is getting full?
     
    #7 uacomm, May 20, 2011
  8. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    44,367
    Likes Received:
    1,857
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    You can browse to the /tmp directory via the command line, and use the following commands to determine which files are using the most disk space:

    Code:
    # cd /tmp
# du -sh * .[a-zA-Z]*
    Thank you.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #8 cPanelMichael, May 20, 2011
  9. uacomm

    uacomm Member

    Joined:
    Apr 15, 2011
    Messages:
    22
    Likes Received:
    0
    Trophy Points:
    51
    I run that command and I looked /tmp folder via winscp root login. There are lot of files like:

    4.0K sess_fbec1bb87c9d1df25813f2fa8a0565cf
    0 sess_fbee02d8231866477dd6089ac8239f06


    But I think above types files are not problematic. I also see lot below types files:

    37M #sql_3287_0.MYD
    4.0K #sql_3287_0.MYI
    21M #sql_3287_1.MYD
    4.0K #sql_3287_1.MYI

    I don't know what types of these #sql_3287_0.MYD? These sql files are filling the /tmp so how can I prevent these files to filling the /tmp
     
    #9 uacomm, May 20, 2011
  10. cPanelTristan

    cPanelTristan Quality Assurance Analyst
    Staff Member

    Joined:
    Oct 2, 2010
    Messages:
    7,608
    Likes Received:
    32
    Trophy Points:
    238
    Location:
    somewhere over the rainbow
    cPanel Access Level:
    Root Administrator
    Those files are for MySQL for temporary MyISAM tables. To prevent MySQL from using /tmp for those temporary tables, you can change the tmpdir location for MySQL in /etc/my.cnf file. In the [mysqld] section of /etc/my.cnf, put the following:

    Code:
    tmpdir=/mysqltmp
    At that point, then create that directory:

    Code:
    mkdir /mysqltmp
chown -R mysql:mysql /mysqltmp
    Then restart MySQL:

    Code:
    /etc/init.d/mysql restart
    At that point, any future temporary tables should end up writing to /mysqltmp instead. You can check it did change to that location by running the following command to check it:

    Code:
    mysqladmin var | grep tmpdir
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #10 cPanelTristan, May 20, 2011
(You must log in or sign up to post here.)
Loading...
Similar Threads - cron clean
  1. HostXNow_Chris

    Cron emails (/usr/local/cpanel/scripts/fix-cpanel-perl;/usr/lo cal/cpanel/scripts/upcp --c

    HostXNow_Chris, Aug 15, 2018 at 2:04 AM, in forum: General Discussion
    Replies:
    1
    Views:
    57
    cPanelLauren
    Aug 15, 2018 at 11:02 AM
  2. CrazySerb

    SOLVED Cron jobs stopped working after cPanel to cPanel transfer to a new server

    CrazySerb, Aug 14, 2018 at 3:05 AM, in forum: General Discussion
    Replies:
    3
    Views:
    56
    CrazySerb
    Aug 15, 2018 at 11:40 AM
  3. MuhammadObaid

    WGET cronjob not working

    MuhammadObaid, Aug 8, 2018, in forum: General Discussion
    Replies:
    5
    Views:
    74
    cPanelMichael
    Aug 9, 2018
  4. ruiz

    Change eximstats_spam_check in crontab

    ruiz, Jul 29, 2018, in forum: E-mail Discussion
    Replies:
    3
    Views:
    72
    cPanelMichael
    Aug 2, 2018
  5. Gojko

    limit cron jobs

    Gojko, Jul 25, 2018, in forum: General Discussion
    Replies:
    1
    Views:
    73
    cPanelMichael
    Jul 26, 2018

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice