XPC Design » Linux http://www.xpcdesign.com Thu, 22 Jul 2010 19:13:58 +0000 en hourly 1 http://wordpress.org/?v=3.0 Nagios SSL/Connection Issue Solved http://www.xpcdesign.com/2010/05/nagios-sslconnection-issue-solved/ http://www.xpcdesign.com/2010/05/nagios-sslconnection-issue-solved/#comments Wed, 26 May 2010 19:33:31 +0000 Ryan http://www.xpcdesign.com/?p=457 On /etc/nagios/nrpe.cfg, (remote server) comment out the following line:

  • #allowed_hosts=

They say it ignores this config line if you use xinet.d, but they are totally wrong. I used to get the “Host <blah> is not allowed to talk to us!” error because of this.

The command I used to test the connection (on the host server) is:

  • /usr/lib/nagios/plugins/check_nrpe -H <remote_server_ip>
]]> http://www.xpcdesign.com/2010/05/nagios-sslconnection-issue-solved/feed/ 0 Linux Commands and Paths for a Plesk Server http://www.xpcdesign.com/2010/03/plesk-commands-and-paths/ http://www.xpcdesign.com/2010/03/plesk-commands-and-paths/#comments Fri, 05 Mar 2010 03:37:54 +0000 Ryan http://www.xpcdesign.com/?p=411 This is my on-going cheat sheet of Linux commands for my Plesk server running on CentOS 5. I will keep updating this as I go on. Read more to see the list:

Restarting Firewall

  • /etc/rc.d/init.d/psa-firewall stop
  • /etc/rc.d/init.d/psa-firewall start

Restart Plesk

  • /etc/init.d/psa stop
  • /etc/init.d/psa start

Restart MySQL

  • /etc/init.d/mysqld restart

Optimize all MySQL databases and tables

  • mysqlcheck -Ao -u username -ppassword (Optimize all)
  • mysqlcheck -Aa -u username -ppassword (Just analyze)
  • mysqlcheck -Aao -auto-repair -u username -ppassword (Analyze, repair and optimize)

Run Logwatch

  • logwatch –print –detail High –archives –range All

Change Ownership

  • chown user:group /some/folder
  • chown user:group /some/folders-and-the-files-inside/*

Copy Contents of a Folder to Another

  • cp -r /some/folders-and-the-files-inside/* /some/folder

Check Sub-folder Sizes in the Current Folder

  • du -sh *

Check Total Size of a Folder

  • du -sh

List Partitions and Drive Space Usage

  • df -k

Splunk Commands

  • /opt/splunk/bin/splunk stop
]]> http://www.xpcdesign.com/2010/03/plesk-commands-and-paths/feed/ 0 SMARTd Commands for SATA Drives http://www.xpcdesign.com/2010/02/smartd-output-for-sata-drives/ http://www.xpcdesign.com/2010/02/smartd-output-for-sata-drives/#comments Sat, 27 Feb 2010 01:22:47 +0000 Ryan http://www.xpcdesign.com/?p=400 Show all SMART information

smartctl -d ata -a /dev/sda1
  • -a = Show all SMART information for device.
  • -d = Specify the device type to one of: ata, scsi, marvell, 3ware (ata is selected above).
  • /dev/sda1 = The drive.

Run a self-test

smartctl -d ata -t offline /dev/sda1
smartctl -d ata -t long /dev/sda1

Output self-test and other log results

  • smartctl -d ata -l selftest /dev/sda1
  • smartctl -d ata -l error /dev/sda1
  • smartctl -d ata -l selective /dev/sda1
  • smartctl -d ata -l directory /dev/sda1

Output all options

smartctl -h

Misc

  • Enable smart by editing /etc/smartd.conf file.
  • Smart Configuration file: /etc/smartd.conf
  • Start/Stop smart: /etc/init.d/smartd start | stop
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