Latest revision as of 09:20, 2 March 2020

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1 Manual Update

It is important to understand the basic components in which Pandora FMS is divided. There are three main elements: console, server and database. In Opensource installations, these three components are quickly updated, but in Enterprise installations the process will take a few more steps, since the components have extended Enterprise features that need to be updated separately.

The component breakdown is as follows:

Opensource installations:

Web Console.
Server.
Database.

Enterprise installations:

Open Web Console.
Enterprise Web Console (extended console functions).
Open Server.
Enterprise Server (extended server functions).
Database (additional charts of the Enterprise version).

Updates will always include console changes, sometimes server changes, and once in a while database changes. Let us organize the updates into two major categories: minor version upgrades, with no database changes, and major version upgrades, with database changes.

1.1 Update a minor version

These do not include any changes in the database, only in the console and sometimes in the server. E.g. updates 6.1 SP1 to 6.1 SP2.

Initial precautions:

1. Back up the database. E.g.

mysqldump -u root -p pandora > backup_pandora_X.Y.sql

2. Back up the config files: pandora_server.conf, config.php, pandora_agent.conf.

3. Back up server and agent plugins, at:

/etc/pandora/plugins
pandora_console/attachment/plugin
/usr/share/pandora_server/util/plugin

4. Suspend the following services: pandora_server, tentacle_serverd, httpd, pandora_agent and mysqld.

5. Proceed to update.

1.1.1 From RPM packages

Open console update:

rpm -U pandorafms_console_package.rpm

Enterprise console update:

rpm -U pandorafms_console_enterprise_package.rpm

Open server update:

rpm -U pandorafms_server_package.rpm

Enterprise server update:

rpm -U pandorafms_server_enterprise_package.rpm

You can find out which version you have installed at any time, before or after the installation by executing the command:

rpm -qa | grep -i pandora

1.1.2 From DEB packages

Open console update:

dpkg -i pandorafms_console_package.deb

Enterprise console update:

dpkg -i pandorafms_console_enterprise_package.deb

Open server update:

dpkg -i pandorafms_server_package.deb

Enterprise server update:

tar zxvf pandorafms_server_enterprise_package.tar.gz
cd pandora_server/
./pandora_server_installer --install

Should there be any dependency problems, they can be solved directly with:

apt-get install -f

1.1.3 From Tarball / Sources

Open console update:

tar xvzf pandorafms_console_package.tar.gz
cd pandora_console
./pandora_console_upgrade -p /yourconsolepath

Enterprise console update:

tar xvzf pandorafms_console_enterprise_package.tar.gz
cd pandora_console
./pandora_console_upgrade -p /yourconsolepath

Open server update:

tar xvzf pandorafms_server_package.tar.gz 
cd pandora_server
./pandora_server_upgrade --upgrade

Enterprise server update:

tar xvzf pandorafms_server_enterprise_package.tar.gz 
cd pandora_server
./pandora_server_upgrade --upgrade

Agent update:

tar xvzf pandorafms_agent_package.tar.gz
cd pandora_agent
./pandora_agent_installer --force-install

1.1.4 Version 7.0NG ( Rolling Release )

If you choose to update manually the Pandora FMS Console in version 7.0NG, (through rpms, tarball or deb) you may have to manually apply the scripts of migration between the different versions. To avoid this situation, in version 7 it is always recommended to update the console using Update Manager.

In case of having an outdated database (a rare error that should not take place under normal circumstances), administrator users will see a warning on the notification tab indicating this problem:

To solve this problem, enter the server where the Pandora FMS console is installed and go to the directory named /var/www/html/pandora_console/extras/mr. There should be another directory located within labeled as 'updated'. All sqls that are already applied must be stored within the 'updated' directory, and those that are not must be stored outside. So once an sql is applied to the database, move them to the 'updated' directory. MR1 execution will serve as example. In this case, there is no MR applied on the database and the MR0 will appear in the footer of the Pandora FMS console. Version 704 has been manually installed and the MR1 must be applied executing the sql found at /var/www/html/pandora_console/extras/mr/ called 1.sql. Execute it like this:

[[email protected] mr]# cat 1.sql | mysql -u root -p pandora

The MySQL user is root and the database is labeled as pandora.

Once applied, update the MR value in the tconfig table of MySQL to cange the footer value to the current one. Execute the following command once entered MySQL:

mysql> use pandora;
mysql> update tconfig set value= XX where token='MR';

Once done, the warning message will disappear from the Console and in the footer, the MR1 will appear as applied. The next step is to move the sql to the 'updated' folder. To know which MRs should be applied, please go to the next link.

[[email protected] mr]# mv 1.sql updated/

1.2 Major release update

Major release updates always include database changes, so you need to update your database schema, e. g. updates from version 6.0 to 6.1; or 6.1 to 7.0.

1.2.1 Database updates ("Major releases")

In order to update the database, first update the Open or Enterprise console, depending on your version. These updates allow the necessary sql files to be downloaded.

Once the console is up to date, the sql scripts of the database update can be found in /extras or /enterprise (again, depending on your version) on the console. On a standard CentOS installation they can be found at:

/var/www/html/pandora_console/extras/pandoradb_migrate_X.Y_to_Z.T.mysql.sql
/var/www/html/pandora_console/enterprise/pandoradb_migrate_vX.Y_to_vZ.T.mysql.sql

Before updating it is recommended to follow the precautions described above: back up the database and the config files, and suspend the Pandora FMS server:

service pandora_server stop

Open database update:

mysql -u username -p -D databasename

E. g.

mysql -u pandora -p -D pandora

Execute the following from MySQL command-line:

source /yourconsolepath/extras/pandoradb_migrate_X.Y_to_Z.T.mysql.sql;

When executing the Open version migration, the Enterprise version will also be updated.

To exit the MySQL client, execute "quit". The database is now updated to the correct version.

In case you need to go back to a previous version, you can restore the backed up database by means of this procedure:

mysql -u username -p databasename
> drop database databasename;
> create database newdatabasename;
> use newdatabasename;
> source backup_pandora_X.Y.sql

E. g.

mysql -u root -p pandora
> drop database pandora;
> create database pandora;
> use pandora;
> source backup_pandora_X.Y.sql;

2 Automatic update with Update Manager

2.1 OpenSource updates

From version 4.0.2 onwards, Pandora FMS (Opensource version) allows semi-automatic weekly updates, based on improvements in the Update Manager system (previously exclusive to Enterprise). It allows an online query to be carried out, to find out if there is an update available and, if so, download it and automatically update the console.

Updates feature the following characteristics:

An outgoing Internet connection from the Pandora FMS console is necessary.
Update manager contacts our servers to find the latest version available (in Sourceforge). It sends statistical data on the number of agents used (the data is anonymous).
It downloads the update from Sourceforge, from the directory of weekly updates.
Weekly updates are not incremental, but the total content for the console, which means the download process could take a while (packet size is approximately 25MB).
Updates are automatic: they are not checked by the team, and cannot be guaranteed. However, in 99% of cases they present no issues.
Updates are only for the console, not for agents or server.

2.1.1 Console update process

It is fairly simple. Go to extensions -> Update manager. On the main screen you will see if there are any pending or available updates, plus the latest console version. Click to install.

After downloading the package, a dialog will appear with the option to accept or reject the update.

Click "Ok" to begin the installation process.

Some updates contain databas modifications. The update process launches a dialog to inform about these changes, as in the following screenshot.

At this point there are two possibilities, either applying the changes to the database and updating the console, or rejecting the update, so that nor the database nor the console are updated, since some changes in the console need the according changes in the database.

To use Update Manager, you need an outgoing Internet connection. It uses WGET by default to download packets, you can use the CURL method (this must be changed in the Pandora FMS configuration) but it is slower.

After the process, the main update page will appear with the updated console version displayed. Congratulations, you have successfully updated your version!

2.2 Enterprise updates

Unlike Open updates, these have some additional characteristics:

100% tested by our in-house development team, so you can take advantage of the latest updates (even hours after opening an incident, in some cases).

Specific updates (incremental) that only update out-of-date elements, without downloading heavy packages.

It allows "offline" updates, downloading packages from the support page, for Pandora FMS installations that do not have an Internet connection (for security reasons).

2.2.1 Configuration

To be able to use Update Manager in the Enterprise version, first the updater must be correctly configured, which has its own section in the menu:

2.2.2 "Online" updates

Update Manager is available in the update section. If you have the Enterprise version installed, you may use this interface, otherwise the one to appear will be that of the Open version.

From this page, you can see the current version of Pandora FMS, plus any new updates available.

To update to the last version, click on the link that shows the image in your Pandora FMS console.

A dialog will appear giving the option to continue or not.

If you click Continue, two things can happen: either the console will be updated and the process will finish; or, the update may include database changes and a dialog will appear asking whether you want to update the database or not.

If you decide to update it, the process will continue in a normal way, but if you reject it, neither the database nor the console will be updated, since some changes in the database can have critical importance in changes to the console in that same update.

After, the updater will appear with the current version installed on Pandora FMS.

2.2.3 "Offline" updates

"Offline" Pandora FMS updates can also be downloaded, which have .OUM extensions. Go to the official Pandora FMS support page to download them.

Upload them to the console with the following control:

Once uploaded, the file will appear. We can click on it to start the update.

The update follows the same operation flow as online downloads, displaying the corresponding console and database update dialogs, if there are any changes to be applied there.

The Pandora FMS Console can be updated in the same way as with the OUMs, using zip files created by our team.

In case of updating an installation with High Availability (HA), it will be necessary to take into account what is indicated in [this section].

2.3 Additional PHP engine configuration for Update Manager

For Open Update Manager to run correctly, it needs more memory than the default memory it takes. To assign more memory to the PHP run, and make the Open Update Manager work, you must edit the php. ini file and set the memory to at least 256M.

The line is:

memory_limit = 256M	; Maximum amount of memory a script may consume (16MB)

Generally on Debian/Ubuntu systems, this file may be found here: /etc/php5/apache2.

http://wiki.pandorafms.com/index.php?title=Pandora:Documentation_en

3 Migrating to another system

You may want to use a new version of Pandora FMS in another different or newer system or distribution, for example, migrating from a SUSE 11 to a SUSE 12 or from an Ubuntu to CentOS.

To do that, install Pandora FMS from scratch in the new system, or download the ISO that we provide and install it.

1. When Pandora FMS is running on the new system, back up the previous system's database:

mysqldump -u root -p pandora > backup_pandora_X.Y.sql

2. Then, send the backup_pandora_X.Y.sql file from the oldd system to the new one.

3. Close all running processes except for MySQL.

/etc/init.d/pandora_server stop 
/etc/init.d/pandora_agent_daemon stop 
/etc/init.d/tentacle_serverd stop 
/etc/init.d/apache2 stop  o /etc/init.d/httpd stop (for apache servers, this will vary depending on the distribution you're using)

4. Enter MySQL as root user. Access the Pandora FMS database on the new system (¨pandora¨ by default) and import the database.

#mysql -u root -p
mysql>use pandora
Database changed
mysql>source /home/artica/backup_pandora_X.Y.sql ( this path will vary depending on the directory where the backup is stored )

5. In case of a migration to a higher version, where the database structure changes, this would be the time to run the migration scripts as indicated in the major version update procedure.

6. If you have changed the distribution, keep in mind the console path has also changed and some database fields will be different, such as tconfig "attachment_store" and "fontpath". To modify these fields, enter these queries. In the example you can see what a migration to CentOS would look like. For other distributions, change the Apache directory path.

#mysql -u root -p
mysql>use pandora
Database changed
mysql>UPDATE tconfig SET value = '/var/www/html/pandora_console/attachment' WHERE token LIKE 'attachment_store'
mysql>UPDATE tconfig SET value = '/var/www/html/pandora_console/include/fonts/smallfont.ttf' WHERE token LIKE 'fontpath'

Keep these paths in mind in server and console configuration files (config.php and pandora_server.conf)

7. Once the database is migrated, check that the previous .../pandora_console/include/config.php and /etc/pandora/pandora_server.conf files and the new ones contain the same data in the dbname, dbuser and dbpass fields. If they are the same ther is no need to do anything. If not, do one of these two things:

a. Replace the new files with the old ones or replace the data of the new files for the old ones.

b. Give the database permissions with the data from the new installation. E. g. with the following data; dbname=pandora, dbuser=pandora1 and dbpass=pandora2, it would be like this:

#mysql -u root -p
mysql>grant all privileges on pandora.* to 'pandora1'@'localhost' identified by 'pandora2';
mysql>flush privileges;

Restart the daemons and access Pandora FMS console, including all agents, modules, alerts, etc. already configured and, if you replace the IP of the new host by the previous one, all the local agents will report to the new system.

If it is the Enterprise version, follow the same procedure.

4 Windows client update from installer

In the installation executable of the console and the server, there is a new option that allows to update Pandora FMS if a previous version is installed in the computer.

Start the installer (.exe) as if you were going to perform an installation frorm scratch and select the language:

Follow the steps in the installer:

Accept the licence terms:

In the "Select components" section, select only the option to update the version installed.

Select the necessary installation path and continue. The installer will ask for the IP and the name of the Pandora FMS server.

Start installing the components. A warning will appear reminding you that Microsoft Visual C++ is required for the modules to work properly.

Click "Finish" for the installation to be complete.

Pandora FMS is now updated and ready to use.

Following these steps, the Pandora FMS code will be updated to the latest version, whose new upgrades include replacing Apache by Nginx as web server. If you want to keep the installation with Apache, update the console with OUM packets or Update Manager Online.

5 Update to a previous version

To be able to update your software to a previous version, downgrade Pandora FMS console. As a precaution, it is recommended to back up the database and Pandora FMS configuration file as shown previously. The Open package must always be installed first and the Enterprise version afterwards.

5.1 From RPM packages

Open console update:

rpm -i --force pandorafms_console_package.rpm

Enterprise console update:

rpm -i --force pandorafms_console__enterprise_package.rpm

5.2 From DEB packages

Open console update:

dpkg –i  --force pandorafms_console_package.rpm

Enterprise console update:

dpkg -i --force pandorafms_console__enterprise_package.rpm

5.3 From Tarball/Sources

Open console update:

tar -xvzf pandorafms_console_package.tar.gz
mv –f ./pandora_console/* /yourconsolepath

Enterprise console update:

tar -xvzf pandorafms_console_package.tar.gz
mv -f ./enterprise /yourconsolepath

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