Tag Archives: CentOS
Update to PHP 5.6 on CentOS 6 using remi repository
With CentOS being a conservative distribution, security patches are still applied to CentOS 6, but no new versions are available. When running some websites – like Virtualmin – on CentOS 6, the old PHP version 5.3.3 can cause problems. Updating to a newer … Continue reading
Monit restart not working on CentOS – no pid-file after restart
Monit is a monitoring tool that can monitor processes, files and more. In the event of a failed monitor, monit is able to alert or trigger an action. Often the action triggered is to restart the monitored daemon. With the … Continue reading
Setup Dovecot with PAM authentication and SSL on CentOS
Dovecot will act as the IMAP server for this setup. If you need POP3, this can also be provided by dovecot, but in this article I’m just going to show how to setup IMAP with SSL to protect the transfer of emails. Installation … Continue reading
Access a service without direct internet connection
When two servers are connected to each other but only one server has access to the internet, services on the server that is not connected directly to the internet cannot be accessed directly. The server connected to the internet has to forward the ports to the services you want to reach on the second server. This will show you how to configure that. Continue reading
Setup gitosis to manage git repositories
With git you can have a repository on your client working independently and even not having any remote repository. But if you wane share your work with others, a remote repository will be needed. Such a remote repository can be easy set up. Continue reading
Show installed yum packages by size
When you pay for every GB of disc space on your server as it is with an Amazon EC2 instance, you want to make sure that the installed packages are at a minimum. Besides the actual user data, you can as well try to remove packages you don’t need but have been installed for some reasons. Here is how to find the biggest installed packages. Continue reading
PHP Unable to load library module.so
If you see in the Apache error_log log-file an error like “Unable to load dynamic library /usr/lib/php/modules/module.so”, you probably have CentOS 6.4 which has a configuration issue in the mcrypt configuration file. Continue reading
Set up apache and the log path with SELinux
Depending on your backup strategy you might run into troubles of backup the entire /etc directory. Running a default installed Apache on CentOS will have the log directory of Apache linked from within the /etc/httpd/ directory. If you backup solution would backup those as well, the backups would contain the logs and get huge. Continue reading
Restrict SSH login using SSH keys to a particular IP address
Because most passwords are quite short so you can remember them as well as it is annoying to type the password all the time, You might have already considered creating SSH-keys and configured the SSH passwordless login with SSH-key for your server. But how to secure the access with SSH-key? Continue reading
Secure SSH server access
With a server running, SSH is one of the services nearly instantly gets checked out. Only after a couple of hours of going live with your server, you might already notice someone trying to login with passwords from a dictionary. There are some things you can do to reduce those hacking attempts to your SSH server. Continue reading
