This is a step by step setup on GlusterFS on a single node and drive. Mostly this is a proof of concept but it is also intended to provide an easily scalable method of adding storage space as my needs increase. I don’t need high availability or a very high degree of performance since this […]
First, install the needed packages: # yum install postfix # yum install cyrus-sasl cyrus-sasl-plain cyrus-sasl-md5 Then configure postfix: Edit /etc/postfix/main.cf and add these lines: smtp_sasl_security_options = noanonymous relayhost = [smtp.gmail.com]:587 smtp_use_tls = yes smtp_tls_CAfile = /etc/postfix/cacert.pem smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl/passwd Create /etc/postfix/sasl/passwd and add this line: [smtp.gmail.com]:587 username@gmail.com:password Then change the permissions for […]
First, find out the size of the disk by typing the following command: fdisk -l /dev/sdb Then, to create a partition start GNU parted as follows: parted /dev/sdb Creates a new GPT disklabel i.e. partition table: (parted) mklabel gpt Next, set the default unit to TB, enter: (parted) unit TB To create a 3TB partition […]
Creating a custom command is sometimes very convenient and very easy. 1. Create a bash script and save #!/bin/bash # The code goes here 2. Make the script executable chmod +x [script] 3. Then you can either move it into the /usr/bin directory or create a soft link in /usr/bin to the script file ln […]
In addition to using system-config-firewall (which is not installed on RHEL by default) one can edit the configuration file directly. This also helps if you need to add more specific rules. File: /etc/sysconfig/iptables Open a port up to everybody: -A INPUT -m state –state NEW -m tcp -p tcp –dport [Port Number] -j ACCEPT Open […]