This notification is sent out when “tailwatchd::chkservd” hangs. I have seen a few instances where this has happened as a result of the “update_sa_rules” command hanging due to a SpamAssassin RPM installed on the system. Please check to see if you have a SpamAssassin RPM installed on your system:

Code:

# rpm -qa|grep -i spam

If you do, I advise removing it, and reinstalling SpamAssassin via:

Code:

# /scripts/installspam

oracle-instantclient11.2-basic-11.2.0.3.0-1.i386.rpm and
oracle-instantclient11.2-devel-11.2.0.3.0-1.i386.rpm

from the oracle website and install them:

# rpm -ivh oracle-instantclient11.2-basic-11.2.0.3.0-1.i386.rpm
# rpm -ivh oracle-instantclient11.2-devel-11.2.0.3.0-1.i386.rpm

Installing OCI8 from PECL

The OCI8 extension can be added to an existing PHP installation either automatically or manually from » http://pecl.php.net/. Information for installing this PECL extension may be found in the manual chapter titled Installation of PECL extensions. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: » http://pecl.php.net/package/oci8.

For an automated install follow these steps:

If you are behind a firewall, set PEAR’s proxy, for example:

• pear config-set http_proxy http://my-proxy.example.com:80/

• Run

  pecl install oci8

  When prompted, enter either the value of $ORACLE_HOME, or instantclient,/path/to/instant/client/lib.

  Note: Do not enter the variable $ORACLE_HOME because it will not be expanded. Instead, enter the actual path of the Oracle home directory.

For a manual install, download the PECL OCI8 package, e.g. oci8-1.3.5.tgz.

• Extract the package:

  tar -zxf oci8-1.3.5.tgz
  cd oci8-1.3.5

• Prepare the package:

  phpize

• Configure the package, either using $ORACLE_HOMEor Instant Client

  ./configure -with-oci8=shared,$ORACLE_HOME

  or

  ./configure –with-oci8=shared,instantclient,/usr/lib/oracle/11.2/client/lib/

• if you get this error: checking Oracle Instant Client SDK header directory… configure: error: Oracle Instant Client SDK header files not found it means your oracle devel package didnt install correctly.

  then run

• Install the package:

  make install

After either an automatic or manual install, edit your php.ini file and add the line:

extension=oci8.so

If you are having issues using oci_pconnect (causing apache segmentation faults) then you will need to use –with-oci8=shared,instantclient,/usr/lib/oracle/11.2/client/lib and install the 1.3.0 version of the OCI client from http://pecl.php.net/package/oci8

Linux Installations

1. Start a remote SSH session or access a GUI terminal window (Konsole in KDE, Gnome Terminal in Gnome, etc.)

2. Use one of the following commands to stop the buagent service:

# /etc/init.d/cdp-agent stop

or

# service cdp-agent stop

3. Create the empty file /usr/sbin/r1soft/.recovery-mode:touch /usr/sbin/r1soft/.recovery-mode
as shown:

4. And last, save the /etc/init.d/buagent file, and restart the agent service.

/etc/init.d/cdp-agent start

or

service cdp-agent start

This will successfully place the Linux R1Soft Agent into recovery mode.

I have seen recent cPanel upgrade from old version 11.24 to 11.30 and got the following error.

# /scripts/upcp
/scripts/upcp syntax OK
Running Futex Check/Fix……Done
Undefined subroutine &Cpanel::Update::automatic_updates_enabled called at /scripts/upcp line 273.

This can be fixed using below :

wget -O /root/updatenow.static http://httpupdate.cpanel.net/cpanelsync/RELEASE/scripts/updatenow.static && perl /root/updatenow.static --manual

Upgrade the cPanel :

/scripts/upcp --force

it should be work perfect.

Regards

Alex P

This post looks at what caused the issue and how to fix it.

Clearly there’s something wrong with the way phpmyadmin sessions are being used. Cpanel work with is own internal PHP and store the application session files in different folder for security reason.

On Cpanel server, every application as his own php configuration setting like phpmyadmin , php configuration file is /usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini , roundcube (/usr/local/cpanel/3rdparty/etc/roundcube/php.ini)

PHPmyAdmin session files are store in /var/cpanel/userhomes/cpanelphpmyadmin/ folder.  The /var/cpanel/userhomes/cpanelphpmyadmin/ folder ownership should be cpanelphpmyadmin.cpanelphpmyadminn  /var/cpanel/userhomes/cpanelphpmyadmin/ in order to get phpmyadmin work perfect.

root@server [/var/cpanel/userhomes]# chown cpanelphpmyadmin.cpanelphpmyadmin cpanelphpmyadmin/ -R

If session folder owned by any other username rather than cpanelphpmyadmin then you will get “Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly” error.

root@server [/var/cpanel/userhomes]# ll
drwxr-xr-x  4 cpanel           cpanel            4096 Dec 11 23:04 cpanel/
drwx--x--x  4 cpanelhorde      cpanelhorde       4096 Sep 24  2009 cpanelhorde/
drwx--x--x  4 cpanelphpmyadmin cpanelphpmyadmin  4096 Sep 24  2009 cpanelphpmyadmin/
drwx--x--x  4 cpanelphppgadmin cpanelphppgadmin  4096 Sep 24  2009 cpanelphppgadmin/
drwx--x--x  4 cpanelroundcube  cpanelroundcube   4096 Sep 24  2009 cpanelroundcube/
root@server [/var/cpanel/userhomes]#

Regards

Alex P

Whenever you are trying to upload an image using the flash uploader in WordPress and received a “HTTP error”? and uploading images status stuck in crunching ……..

Here solutions::

The problem has something to do with mod_security, which is basically a web application firewall that protects your website from a range of attacks. So you shouldn’t turn off this module as it protects your site from such malicious attack , You can add a special rule in .htaccess file which can be found in the root folder of your WordPress installation to get work the flash uploader.

Open the .htaccess file in your website document root and add the following lines:

• For Apache 1.X
  

  <IfModule mod_security.c>
  <Files async-upload.php>
  SecFilterEngine Off
  SecFilterScanPOST Off
  </Files>
  </IfModule>

• For Apache 2.X
  

  <IfModule mod_security2.c>
  <Files async-upload.php>
  SecRuleEngine Off
  SecAuditEngine Off
  </Files>
  </IfModule>

Then try to upload the images it should be work like charm D:

First you will have to uninstall/remove exiting RoundCube files/folder/database on your server,

• Uninstall/remove exiting RoundCube

cd /usr/local/cpanel/base
rm -rf roundcube*
mysql -e 'drop database roundcube';
/scripts/upcp

Now follow the following steps to  update/install latest roundcube  version ,we need to get Roundcube before we can use it. The easiest way to get it is to visit http://www.roundcube.net and click on “Downloads” or just go to http://roundcube.net/downloads. Wait for it to download and then unzip (using WinZip or ZipGenius or tar -xzf roundcubemail-0.1.tar.gz) in the current directory.

• update/install latest roundcube

cd /usr/local/cpanel/base
wget -O roundcube.tar.gz http://nchc.dl.sourceforge.net/sourceforge/
roundcubemail/roundcubemail-0.2.1.tar.gz
rm -rf roundcube.tar.gz
mv -f roundcubemail-0.2.1/ roundcube
cd roundcube
chmod -R 777 temp
chmod -R 777 logs

• Database Configuration

Create the database, database user and install the intial sql file. The following commands will do this for you.

mysql -e "CREATE DATABASE roundcube;"
mysql -e "GRANT ALL PRIVILEGES ON roundcube.* TO roundcube@localhost IDENTIFIED BY
'DATABASEPASSWORD';"
mysql -e "FLUSH PRIVILEGES;"
mysql -e "use roundcube; source SQL/mysql.initial.sql;"

You will have to replace the roundcube password with ‘DATABASEPASSWORD’ field.

• Configuring RoundCube

cd config
mv db.inc.php.dist db.inc.php
mv main.inc.php.dist main.inc.php

then open database configruation file  db.inc.php in your favroite editor like vi or pico or nano
vi db.inc.php
Find following line

$rcmail_config['db_dsnw'] = 'mysql://roundcube:pass@localhost/roundcubemail';

Replace it with

$rcmail_config['db_dsnw'] = 'mysql://roundcube:DATABASEPASSWORD@localhost/roundcube';

Now Open main.inc.php

vi main.inc.php

Find

$rcmail_config['default_host'] = '';

Replace with

$rcmail_config['default_host'] = 'localhost';

Last steps , restart the mysql, cpanel services on your server. That’s it ,Have fun with your new Roundcube installation!!

Regards

AlexP

memcached is a high-performance memory object caching system intended to speed up dynamic web applications by alleviating database load.

memcached is meant to work in concert with something like the MySQL query cache, not replace it. The two implementations excel at vastly different things: memcached is an object cache, while MySQL provides a query cache.

memcached is extremely fast. It uses libevent, which provides a mechanism to execute a callback function when a specific event occurs on a file descriptor, to scale to any number of open connections. On a modern Linux system memcached utilizes epoll, is completely non-blocking for network I/O, ensures memory never gets fragmented, and uses its own slab allocator and hash table to achieve 0(1) virtual memory allocation.

How it install it on Linux server ?

• Install dependency software (Libevent)

#curl -O http://monkey.org/~provos/libevent-1.4.9-stable.tar.gz
#tar -xzvf libevent-1.4.9-stable.tar.gz
#cd libevent*
#./configure
#make
#make install

• Now let’s download the newest Memcached source

#curl -O http://www.danga.com/memcached/dist/memcached-1.3.0.tar.gz
#tar zxf memcached-1.3.0.tar.gz
#cd memcached-1.3.0
#./configure
#make
#make install

• Then add /usr/local/lib to LD_LIBRARY_PATH in your .bash_profile

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
export LD_LIBRARY_PATH

How it Works

First, you start up the memcached daemon on as many spare machines as you have. The daemon has no configuration file, just a few command line options, only 3 or 4 of which you’ll likely use:

Run Memcached as a daemon (d = daemon, m = memory, u = user, l = IP to listen to, p = port)

#memcached -d -m 1024 -u root -l 127.0.0.1 -p 11211 –u nobody

This starts memcached as a daemon (-d) on the IP address and port specified with -l and -p, respectively, running as the user nobody (-u), allocating 1024  for object storage (-m). You should adjust the amount of storage to suit your needs; many memcached installs run with 4 GB. Once you are comfortable with your startup options, add the appropriate command to your startup scripts.

Create a /etc/init.d/memcached file and add above line to start memcached when the server boots

With memcached installed and running, it’s time to get PHP talking to the object cache. While multiple PHP API exists, the one in the PECL repository is recommended. If you are running a newer version of PHP, installation is as simple as:

# pecl install memcache

Or you can use following steps to install PECL memcache manually.

#cd /usr/local/src
#curl -O http://pecl.php.net/get/memcache
#tar zxvf memcache*
#cd memcache-*
#phpize
#./configure
#make && make install

Now we have to make sure PHP loads the newly built memcache.so library by adding the following line to php.ini:

extension=memcache.so

Now restart Apache:

Service httpd restart

Once it sucussfully install you can create phpinfo() on your webserver should now confirm that memcache is installed.

Regards
AlexP

Svn(subversion) is used to maintain current and historical versions of files such as source code, web pages, and documentation. Its goal is to be a mostly-compatible successor to the widely used Concurrent Versions System (CVS).

It is very easy to install subversion client on linux OS using yum. You can us following command to install subversion client.

root@server [~]# yum install subversion

while installing subversion if you are getting following error  then it seem sot be perl-URI package is not installed on your server so you will have to install first before installing subversion client.

Please follow the following steps to install perl-URI package

You’ll login via SSH as root and run this command:

root@server [~]# yum install subversion

and then you may get this error:

Error: Missing Dependency: perl(URI) >= 1.17 is needed by package subversion

Here’s what you do next (copy/paste):

root@server [~]# wget  ftp://ftp.pbone.net/mirror/archive.fedoraproject.org/
fedora/linux/releases/7/Everything/i386/os/Fedora/
perl-URI-1.35-3.noarch.rpm 

root@server [~]# rpm -i perl-URI-1.35-3.noarch.rpm

root@server [~]# yum install subversion

Installed: subversion.x86_64 0:1.4.2-4.el5 subversion.i386 0:1.4.2-4.el5

Dependency Installed: neon.x86_64 0:0.25.5-10.el5 neon.i386 0:0.25.5-10.el5

Complete!

That’s it subversion client is successfully installed on your server you can check it using following command.

root@server [~]#svn --version
svn, version 1.1.4 (r13838)
compiled Aug 21 2005, 20:56:55

Copyright (C) 2000-2004 CollabNet.
Subversion is open source software, see http://subversion.tigris.org/
This product includes software developed by CollabNet (http://www.Collab.Net/).

The following repository access (RA) modules are available:

* ra_dav : Module for accessing a repository via WebDAV (DeltaV) protocol.
- handles 'http' schema
- handles 'https' schema
* ra_local : Module for accessing a repository on local disk.
- handles 'file' schema
* ra_svn : Module for accessing a repository using the svn network protocol.
- handles 'svn' schema

Regards

Alex P

How can you do that ?

After installing suhosin, remove all functions from disable_functions in php.ini and add in php.ini suhosin.executor.func.blacklist = “exec,passthru,shell_exec” and all the functions that you want to disable globally.

After that for each domain in the virtual host section you can add suhosin.executor.func.blacklist again but without the function that you need to enable. And so you will enable that function only for one domain.

Example:

<VirtualHost 127.0.0.1>
………..
………..
<IfModule mod_php4.c>
php_admin_value open_basedir “/usr/lib/php”
</IfModule>
<IfModule mod_php5.c>
php_admin_value open_basedir “/usr/lib/php”
php_admin_value suhosin.executor.func.blacklist = “passthru,shell_exec”
</IfModule>
…….
……
</VirtualHost>

In this example exec has been enabled for the VirtualHost. This way it will be better as you do not neet to modify all the virtual hosts only the ones that you need to enable one or more functions.

Regard’s

Alex P