How to setup Cpanel Dns Cluster’s failure threshold.
This section allows you to specify the number dnsadmin commands that are allowed to fail before a member of your cluster is disabled.
Unresponsive cluster members are disabled in an effort to improve performance.
Global cluster configuration options
If you wish for all of the members of your cluster to remain online at all times, enter 0.
Cpanel recommend setting this value to 10.
Reference : http://cpanel.net/
Instructions to setup swap file
Select the partition where you want to create the swap file. This partition must have free disk space to create the swap file.
Create a file for swap with the following command (# is shell prompt):
#dd if=/dev/zero of=/var/swapfile bs=1024 count=[count]
where [count]= number of 1024 blocks required. If count=1024000 size of /var/swapfile will be 1024* 1024000 = 1 GB .
You can decide the size of “/var/swapfile” depending on the size of the backup tar file.
Setup an extra swap with the following command:
Enable “/var/swapfile” for swapping with the following command:
Verification: The file “/proc/swaps” must contain the entry for the swap file “/var/swapfile”. If this entry is not present, then swapping has not been enabled for the swap area.
Recommended firewall setup for Ensim Pro for Linux
The following is the list of ports used by Ensim Pro for Linux that need to be open if the server is installed behind a firewall.
TCP Port Service
20 FTP Data
21 FTP
22 SSH
23 Telnet
25 Sendmail SMTP
53 DNS
80 HTTP
110 POP3
143 IMAP
443 SSL
783 Spamassassin
3306 MySQL
19638 Control panel
UDP Port Service
How to Setup CentOS testing repo
Setting up repos
To install the CentOS testing repo, along with the yum-priorities plugin.
# cd /etc/yum.repos.d
# wget http://dev.centos.org/centos/5/CentOS-Testing.repo
# yum install yum-priorities
The priorities plugin can be used to enforce ordered protection of repositories, by associating priorities to repositories. Packages from repositories with a lower priority will never be used to upgrade packages that were installed from a repository with a higher priority.
How to setup DA with an SSL certificate
If you already have your own certificate and key, then paste them into the following files:
certificate: /usr/local/directadmin/conf/cacert.pem
key: /usr/local/directadmin/conf/cakey.pem
Edit the /usr/local/directadmin/conf/directadmin.conf and set SSL=1 (default is 0). This tells DA to load the certificate and key and to use an SSL connection. DirectAdmin needs to be restarted after this change.
If you also have a CA Root Certificate, this can be specified by adding:
carootcert=/usr/local/directadmin/conf/carootcert.pem
into the /usr/local/directadmin/conf/directadmin.conf file and by pasting the contents of the caroot cert into that file.
Source: http://directadmin.com/
