The isolated environment monitoring system with Sync server and Tentacle server allows to deploy monitoring in remote networks from which communication with the main Pandora FMS server is not possible. Pandora FMS's own server will start communicating with the isolated environment to recover all monitoring information.
This feature makes sense particularly when monitoring remote networks in locations other than Pandora FMS server, with the particularity that communication never starts from the remote network to Pandora FMS, but it is the server itself that “collects” the information initiating communications.
This feature is applied in environments generally with the following structure:
Start from Pandora FMS central server as if it were a standard installation. In the remote network, a data collection point (Tentacle server) is installed, which stores all data until the main server (Sync server) initiates communications and downloads the information, similar to a buffer.
Packets stored buffered in the remote environment will disappear once they have been downloaded by the main server.
The main difference between the sync server and the Satellite Server is that it is the main server that initiates communications and receives packets from the remote network. In an environment with a satellite server and/or proxy, it is the satellite/proxy that sends data to Pandora FMS server.
A more complex environment, for example:
Start from an environment where there is a main Pandora FMS server, at the Sync Server. To carry it out, modify the following parameters in the configuration file:
syncserver 1 sync_address <ip_address_tentacle_serve> sync_port <port_number>
Where < ip_address_tentacle_server >
is the IP address of the Tentacle Server and < port_number >
is 41121
, the default Tentacle protocol number.
tentacle_serverd
startup script (located by default at /etc/init.d/
), by adding the -I
and -o
parameteres to TENTACLE_EXT_OPS
line, so:TENTACLE_EXT_OPTS="-i.*\.conf:conf;.*\.md5:md5;.*\.zip:collections -I -o"
sync_address
parameter.sync_address 10.142.50.10,20.152.50.20
In /etc/pandora/pandora_server.conf
:
syncserver 1 sync_address 10.140.70.110 sync_port 41121
In the Tentacle server startup script (/etc/init.d/tentacle_serverd
) identified in sync_address
with 10.140.70.110
:
TENTACLE_EXT:OPTS="-i.*\.conf:conf;.*\.md5:md5;.*\.zip:collections -I -o"
There is a quick guide on how to set up a Tentacle server with security options.
Sync server communications support SSL certificate use. Several parameters must be added to the pandora_server.conf
file, and in the remote Tentacle server script, the same options should be used to achieve normal SSL connection.
/etc/pandora/pandora_server.conf
:sync_ca
: < certificate path of the authenticating CA >.sync_cert
: < server certificate path >.sync_key
: < server certificate private key path >.Configuration example:
sync_ca /home/cacert.pem sync_cert /home/tentaclecert.pem sync_key /home/tentaclekey.pem
In /etc/init.d/tentacle_serverd
:
-e
: < certificate path >.-k
: < public key path >.-f
: < CA certificate path >.ALWAYS indicate the absolute paths where the certificates are located in the parameters, e.g.:
/home/tentaclecert.pem
The full configuration line should look something like this:
TENTACLE_EXT_OPTS="-i.*\.conf:conf;.*\.md5:md5;.*\.zip:collections -e /home/tentaclecert.pem -k /home/tentaclekey.pem -f /home/cacert.pem"
sync_retries
: Number of retries. 3 by default.sync_timeout
: Expiration time. By default 10 seconds.