memcached: Failed To Set rlimit For Open Files Error and Solution

Posted on in Categories , , last updated October 11, 2011

I‘m using RHEL 6 / CentOS 6.x and install the memcached server. However, whey I try to start the server using service memcached start command, I get the following error:

Starting memcached: failed to set rlimit for open files. Try running as root or requesting smaller maxconns value. [FAILED]

How do I fix this problem?

CentOS / RedHat: Set Password Quality Requirements

Posted on in Categories , , , , , , last updated October 1, 2009

I‘ve created a unique default group for each user and also used Linux groups to enhance security. Further a group called “users” allowed to login via ssh. However, I need to enforce password quality-control for all users. How do I create a password policy and enforce its use under CentOS or RHEL 5.x server operating systems?

Redhat Linux yum grouplist and groupinstall Option Not Working

Posted on in Categories , , , , last updated March 5, 2009

I‘m trying to install all the default packages by group using ‘yum groupinstall groupname‘ command under RHEL v5.x. But, grouplist, groupinstall, and groupdelete options are not working with yum. How do I fix this issue and make sure yum command works with software groups under Redhat Enterprise Linux to increase my productivity?