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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