This article explains how to install and configure memcached for Magento (or any PHP site) on a Redhat or CentOS server. Install memcached: yum install memcached php-pecl-memcache -y Now edit your “/etc/sysconfig/memcached” file to look something like this: PORT=”11211″ USER=”memcached” MAXCONN=”1024″ CACHESIZE=”256″ ## Accept connections from another server (192.168.1.2)? #OPTIONS=”-l
Read moreAuthor: Andrew Galdes
A Linux and Cybersecurity expert in Australia.
RHCE, Linux+, Sec+, CySA+, CASP+, CISM
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Enabling Triggers within RDS (Amazon)
By default, Amazon’s AWS RDS databases don’t permit Triggers. This article explains how to change that. Source: “http://techtavern.wordpress.com/2013/06/17/mysql-triggers-and-amazon-rds/”. Open the RDS web console. Open the “Parameter Groups” tab. Create a new Parameter Group. On the dialog, select the MySQL family compatible to your MySQL database version, give it a name
Read moreInstall Composer on CentOS/Redhat
This article explains how to install Composer on a CentOS and Redhat system. curl -sS https://getcomposer.org/installer | php You should get something like this in return. Note that i have an old version of PHP on this system so it warns me about it: [root@server ~]# cd ~ [root@server ~]#
Read moreUse a ‘dd’ image as a disk for a VirtualBox guest
This article explains how to use a ‘dd’ image as the disk for a VirtualBox guest machine. The process is one step; convert the ‘dd’ image to ‘VDI’ format as i’ve done in the example below: VBoxManage convertdd dd-image.raw sda.vdi –format VDI –variant Fixed The above command will leave the
Read moreQuery Active Directory From the Command Line
Have you ever noticed how even on a fast computer the active directory users and computers console can take ages to load especially if you just want to check if a user is a memeber of a group or some other quick stats. Well below you will find the way
Read moreMac TrackPad with a mind of its own
So this one is more of a hardware issue than anything else however it is a common MacBook Pro problem so I thought I had better share it with you. Now I clean my MacBook regularly with Antibacterial wipes simply because I take it all over the place work, train,
Read moreFix Munin Graphs – When they wont update
This article explains how to fix Munin graphs that wont update or have stopped updating. The official FAQ (http://munin-monitoring.org/wiki/faq#Q.Thegraphsarenotupdatinganymore) doesn’t really say much about it. So do this: More info: This is an interesting article related to the issue. “http://grokbase.com/t/sf/munin-users/1166b12gsk/increase-in-period-for-munin-cron-or-munin-update-results-no-graphs”. First, disable munin cron task: mv /etc/cron.d/munin ~/munin.cron Wait until
Read moreGet MySQL Database Sizes
Log into MySQL and issue the following command as it is: SELECT table_schema AS “Database name”, SUM(data_length + index_length) / 1024 / 1024 AS “Size (MB)” FROM information_schema.TABLES GROUP BY table_schema; And you’ll get something like the following: +——————–+————–+ | Database name | Size (MB) | +——————–+————–+ | my_db1 |
Read moreEncrypt Large Files With OpenSSL Using Public/Private Keys
This article explains how to encrypt large files with OpenSSL and Public/Private keys. Create your key-pair: openssl req -x509 -nodes -newkey rsa:2048 -keyout private.pem -out public_nopass.pem Encrypt your larger file: openssl smime -encrypt -aes256 -in bigfile.tar -binary -outform DEM -out bigfile.tar.ssl public.pem Decrypt your file: openssl smime -decrypt -in bigfile.tar.ssl
Read moreInstall Munin Node (Client) on Redhat/CentOS
This article explains how to install and configure the Munun Node on a Redhat or CentOS server. The Munin Server was documented previously. First you need to install the packages: rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm yum install -y munin-node chkconfig munin-node on Make sure to allow TCP port 4949 through your firewall
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