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If you are receiving the following error code while Horde webmail login.
Horde "A fatal error has occurred Could not connect to database for SQLSessionHandler. Details have been logged for the administrator"
Solution::
NOTE: You can fix it only if you have a root user privileges which means this will be helpful for VPS , Semi-dedicated Servers and Dedicated servers.
1. Check the Horde webmail configuration file
Code:
#vi /usr/local/cpanel/base/horde/config/conf.php
2. You can find the following...
Change Linux timezone
If you are using Fedora / RHEL / Cent OS Linux
Type the redhat-config-date command at the command line to start the time and date properties tool.
# redhat-config-date
OR type setup and select time zone configuration (good for remote ssh text based Linux server sessiob)
# setup
Now, just follow on screen instructions to change timezone
Set timezone using /etc/localtime configuration file [any Linux distro]
Often /etc/localtime...
How to remove the blocked ip using iptables
1. First check that ip is blocked or not
2. iptables –L –n | grep
DROP all – 125.99.10.123 216.240.157.91
3. to unblock the ip give the command
iptables -D INPUT -s 125.99.10.123 -d 216.240.157.91 -j DROP
Now the ip is unblock...
How do I verify port and IP binding working ?
Use netstat command to find out if Apache is listening on a specific port or not, use:
# netstat -tulpn
# netstat -tulpn | grep :80
# netstat -tulpn | grep :8010
# netstat -tulpn| grep 202.54.1.2...
Linux admin useful commands
1. Check for server load using top command with following options:
Shift p CPU Usage,
Shift m Memory Usage
& check which process is taking load with the help of above two options.
Kill the responsible process using k option.
2. Check for the downloads using
# ps auxw | grep nobody | grep mp3 , jpeg, wmv, mpeg, rar
# ps auxw | grep gzip, backup, fixquota
Suspend the perticular account who is repeatedly downloading the above...
How to create a Test Mail Script?
Login to SSH with root user
cd /home//public_html
Create test phpmail fine
pico phpmail.php
Insert following code in that file
$to = “recipient@example.com”;
$subject = “Hi!”;
$body = “Hi,\n\nHow are you?”;
if (mail($to, $subject, $body)) {
echo(“
Message successfully sent!
“);
} else {
echo(“
Message delivery failed…
“);
}
?>
Then cange the ownership of that file :
chown user.user phpmail.php
Then test the script...
How to install Ioncube Loader ?
Refer the following steps
1) Login into shell through root
2) cd /usr/local/ Download the tar.gz file which is compatible with your server from http://downloads.ioncube.com/wget http://downloads.ioncube.com/loader_…lin_x86.tar.gz
3) Untar the file.tar -zxf ioncube_loaders_lin_x86.tar.gz
4) chown -R root:root /usr/local/ioncube/
5) vi /usr/local/Zend/etc/php.ini (or whatever your path is)
Add the following line before zend_extension
zend_extension=/usr/local/ioncube/ioncube_loader_lin_4.4.so
It...
make_sock: httpd error
If we get following error of while try to restart httpd:httpd not running, trying to start
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:443
no listening sockets available, shutting down
Unable to open logs
Simply log in as root and fire the command which is given below:
netstat -lpn | grep ’0.0.0.0:80′
It will show the result something like:
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 14829/httpd
Then...
Cannot send emails- RoundCube just shows "Sending Message"
I found a problem with Roundcube, it shows sending message and hangs up there and actually it doesn’t send message anymore. I found the following solution here.
Problem with Roundcube, installed when updated to newest CURRENT release. – Page 3 – cPanel Forums:
vi /usr/local/cpanel/base/3rdparty/roundcube/config/main.inc.php
and changed
$rcmail_config['smtp_user'] = ‘%u’;
to
$rcmail_config['smtp_user'] =...
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