Synchronization between OCS servers master/slaves

Operating principe

You can use the OCS_OPT_GENERATE_OCS_FILES server parameter to automatically generate these files to "inject" it to a higher level server. (in case of multi entities configuration for example).

In that case, you can use a cronjob if the two servers are connected, or put it on the higher level server and run it on loopback.

Warning: This feature just allows you to "inject" inventories into a higher level server. It will be impossible to deploy packages from the highest server.

Simplified Diagram

Simplified Diagram

Prerequires is a script designed to send inventory to an OCS server using .ocs files generated by -local (or /XML for windows). You must have a writable directory to store .ocs files. If you want to automate this synchronization, you have to create a cronjob.

please note, as of the December 2020 and the release of the 2.8.1, the perl injector will have its powershell counterpart in order to be able to inject from a windows machine.

Perl injector and powershell injector can be found in the binutls directory of the release.

Configuration of management console

Inventory Files Acces

To configure this feature, click on Config, and Config. Then, click on Inventory Files tab.

Inventory Files Tab

Warning: Don't forget to create the directory with writable rights.

Server configuration

The configuration file is in


You can verify values here


# Use with ocsinventory-injector, enable the multi entities feature
# Generate either compressed file or clear XML text
# Specify if you want to keep trace of all inventory between to synchronisation with the higher level server
# Path to ocs files directory (must be writeable)
PerlSetEnv OCS_OPT_OCS_FILES_PATH /home/ocs

Warning: Values in database (GUI) take precedence over the configuration file, that's why you have to use web interface to configure this feature.

Command line options

Options Complete options Meaning
-h --help Command line options
-d --directory Load every .ocs files from a directory
-f --file Load a speficic file
-u --url Ocsinventory backend URL, default is http://ocsinventory-ng/ocsinventory
--useragent HTTP user agent, default is OCS-NG_LOCAL_PL_v".VERSION."
-r --remov Remove succesfuly injected files
-m --msg Show message returned my ocsinventory
-v --verbose Verbose mode
--stdin Read data from STDIN
--sslmode Enable or disable SSL (0
--cafile CA File to use for SSL Communication

Note: You can specify a --file or a --directory or STDIN. Current directory is the default


Synchronsation of one inventory

perl  -v -f myInventory.ocs  -u http://OCSmasterServer/ocsinventory

Synchronsation of all inventories in a specific directory

perl  -v -r -d /my/specific/directory -u http://OCSmasterServer/ocsinventory

Synchronsation of one inventory using HTTPS

perl -f MYFILE.OCS -u https://OCSmasterServer/ocsinventory -v --sslmode 1 --cafile /path/to/ca/file

Cron job

You can "inject" inventories automaticaly with a new entry in your crontab:

##### Every 5 minutes ----- execution of OCS injector
*/5  * * * *   root    perl /usr/src/OCSNG_UNIX_SERVER-1.3.3/binutils/ -v -r -d /home/ocs -u http://OCSmasterServer/ocsinventory