If a (poorly coded) app reaches the maximum number of files or folders per directory in Linux, you may see errors like this: Error happened when generating Download Link. Please try again or Contact administrator. (ERROR:mkdir) A quick and dirty way to increase the limit (and overall performance of the system) is to add the […]
This will set the ‘ADMIN’ user password back to default of ‘ADMIN’. You could set it to anything you want, this is just an example. yum -y install ipmitool modprobe ipmi_devintf ipmitool -I open user set password 2 ADMIN
Don’t try to reinvent a complex and highly refined wheel, especially when customer data is involved. Please use phpass on any PHP project. (that’s PH-Pass) http://www.openwall.com/phpass/ Good reading for password hashing in general. http://www.openwall.com/articles/PHP-Users-Passwords
wget http://layer1.rack911.com/before_apache_make -O /scripts/before_apache_make chmod 700 /scripts/before_apache_make ## Rebuild apache (might want to do it thru WHM instead) /scripts/easyapache –build
I’ve got a couple of Linux machines that are sitting outside of the Sflow ‘zone’ and AS traffic stats go unmeasured. I wanted to get a rough idea on the number of connections per AS number so here’s a little app that parses netstat and sorts AS numbers by number of connection. NOTE1: This won’t […]
There are 3 primary options: 1. Use PAR with PAR::Filter::Obfuscate or PAR::Filter::Crypto 2. Use Filter::Crypto::CryptFile (requires certain modules installed on target system) 3. Encrypt modules with Module::Crypt.
Update: 5/3/17 — Add additional notes for CentOS7 (dracut + grub2) and XenServer targets All commands are run on new server. 1. Boot into rescue mode (iso, pxe, ect). 2. Create partitions with ‘fdisk /dev/sda’. Type 83 for non-RAID fs, 82 for swap, type fd in the case of RAID (all partitions). Flag boot partition […]
This tool will poll the output of command(s) or URL(s), and send email alerts if the output changes, contains (or not contains) certain text, or becomes unavailable. It’s a light weight, reliable monitoring replacement for the pile of garbage most RAID vendors include with their cards. Complex excludes and finds can be specified as Perl […]
I just added a 4th monitor to my office PC and finally admitted to needing help with window placement, far beyond Windows 7’s limited snap feature, this tool really gets the job done: http://www.winsplit-revolution.com/ It’s a free, light-weight ‘snap’ on steroids designed specifically for multi-display setups.
XenServer multipath.conf with special support for LIO-based iSCSI targets to maximize multipath performance and ensures 100% stability. path_grouping_policy setting doesn’t seem to matter (between group_by_prio and multibus) in most basic setups. Invalid lines (as reported by XenServer 6.1) have also been removed. http://djlab.com/stuff/xs61/multipath.conf Specifically: device { vendor “LIO-ORG” product “*” path_grouping_policy group_by_prio path_checker tur getuid_callout […]