Where to find OpenStack Cloud Images
A collection of OpenStack cloud images for various distributions, for creating images in Glance. CirrOS is a small Linux cloud image for testing instance creation.
THE KNOWLEDGE BASE
All articles.
389 notes on Linux, tools and troubleshooting
How to fix yum return Segmentation fault error
On CentOS 5, yum may return a Segmentation fault error, for example: [root@ezylinux ~]# yum update bash. base | 1.1 kB 00:00…
How to convert string to lower case
There are several ways to convert uppercase strings to lowercase in Bash: tr, awk, Bash 4.0 expansion, or Perl.
How to change an iDRAC password using Racadm
Reset an iDRAC password directly from the server through OpenManage using racadm. Install OpenManage before following these steps.
How to fix bind hangs on generating rndc key
After setting up a DNS server, starting the named service may hang at Generating /etc/rndc.key:, as shown: [root@zm named]# /etc/init.d/named restart. Stopping named…
How to fix "SSL_connect ... certificate verify failed" on puppet client
After installing the Puppet client, # puppet agent --test connects to the Puppet master but may produce: err: Could not retrieve catalog from remote server: SSL…
How to find delivery performance of Zimbra Mail Server
You can check the performance of incoming and outgoing email on Zimbra mail by examining its delivery logs, allowing you to analyze system performance and identify which parts take particularly long…
How to fixes ZImbra Desktop can not start after windows updates
Some Zimbra Desktop users may be unable to start it after updating Windows. Reinstalling Zimbra Desktop does not resolve this problem. How to fix Zimbra Desktop...
Installing MariaDB 10 on Ubuntu 12.04 LTS
Installing MariaDB 10 on Ubuntu 12.04 LTS using MariaDB's repository. Import the key and install the repository: sudo apt-get install python-software-properties sudo apt-key adv --recv-keys