Raafat Mohamed

Senior Linux Administrator

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in Zpanel
November 5, 2015

Zpanel Webalizer Stats Module fix

If you are getting a blank page when trying to get to Webalizer from within zPanel you can edit the module.zpm file as follows.  Find the /etc/zpanel/panel/modules/webalizer_stats/module.zpm file and line 10 from : <div class=”zmodule_desc” id=”zmodule_desc_<@ ModuleName @>”><@ Description @></div> to : <div class=”zmodule_desc” id=”zmodule_desc_<@ ModuleName @>”><@ ModuleDesc @></div>

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in Linux
October 21, 2015

Linux Malware Detect (Maldet) On CentOS

Linux Malware Detect (LMD) is a malware scanner for Linux released under the GNU GPLv2 license, that is designed around the threats faced in shared hosted environments. It uses threat data from network edge intrusion detection systems to extract malware that is actively being used in attacks and generates signatures for detection. Installation cd /usr/local/src/ […]

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in Storag
October 8, 2015

How to configure NTP for EMC VNX Data Mover

NTP can be configured for EMC VNX Data Movers in two ways. Option 1 : Unisphere Login to Unisphere as Sysadmin (Administrator). Select the Desired Array from Unisphere Dashboard. Go to System > Hardware > Data Movers. Select the desired Data Mover. Click Properties. In NTP Servers, type NTP Servers IP Address (10.10.10.10). Click OK. […]

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in Oracle
October 4, 2015

How to Delete Archivelog Using RMAN in Oracle

Recovery Manager (RMAN) is an Oracle Database client that performs backup and recovery tasks on your databases and automates administration of your backup strategies. If you want to delete archivelog from FRA(ASM Storage -Flash Revovery Area) or filesystem to free space, you can use the following commands:   Start the RMAN executable at the operating […]

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in Linux
September 15, 2015

How do I disable IPv6 on centos?

You can disable IPV6 by the following : #nano /etc/sysctl.conf net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 To disable in the running system: echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6 echo 1 > /proc/sys/net/ipv6/conf/default/disable_ipv6 or sysctl -w net.ipv6.conf.all.disable_ipv6=1 sysctl -w net.ipv6.conf.default.disable_ipv6=1

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in Linux
April 20, 2015

Clear Memory Cache on Linux

You can free up the memory cache on Linux OS by the following : sudo sh -c “sync; echo 3 > /proc/sys/vm/drop_caches” Ex. root@s1:~# free -m              total       used       free     shared    buffers     cached Mem:        323078     319647       3430          0        705     175763 -/+ buffers/cache:     143178     179899 Swap:        11583         29      11554 root@s1:~#  sh -c “sync; echo 3 > […]

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in Storag
April 15, 2015

Configuring EMC NTP setting

To modify or enable NTP service on EMC unisphere ,follow the following steps: Login into the Unisphere, click on the Home Icon and then of the Domains Tab On the right side click the Configure NTP Click OK in the Pop-Up Warning Window, and then you can edit you NTP settings

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in Mysql
April 1, 2015

MySQL – create and delete databases

Login First thing is to log into your Slice via the terminal or PuTTY, etc and then log into MySQL: mysql -u root -p You will be prompted for your MySQL root password (note this is not the same as the Slice root password). Creating a database Let’s start by creating a new database called […]

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in DBs
April 1, 2015

Configuring dom0 Memory in XenServer

To adjust the dom0 memory settings: On the XenServer host, open a local shell and login as root. Enter the following command: /opt/xensource/libexec/xen-cmdline –set-xen dom0_mem=<nn>M,max:<nn>M NOTE: <nn> represents the the amount of memory, in megabytes, to be allocated to dom0. This value should be between 1024 and 4096, depending on the number of VMs that […]

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in Windows
March 31, 2015

Resetting Administrator Password in Windows 2008

You can follow the following steps to reset the Administrator password of your Windows server 2008 /R2 : Restart your Windows server 2008  with the installation CD Choose your Language and click next   Click on Repair your computer option     Select your partition and installation version and click Next Click on Command Prompt […]

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