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Configuring the Management Server

If you have installed PLOSSYS 5 with a separate management server or in a cluster, perform the following configuration steps on the management server.

Configuring Elasticsearch

  1. On the management server, edit the following file:

    /etc/elasticsearch/elasticsearch.yml

  2. Add the following lines:

    network.host: "0.0.0.0"
discovery.type: "single-node"

  3. Save the file.

  4. Set Max_Heap_Size to at least 50 % of the server's RAM:

    export JAVA_OPTS="-Xmx<ZZ>M -Xms<ZZ>M"

    Example - 2048 MB

    export JAVA_OPTS="-Xmx2048m -Xms2048m"

    Caution - value

    <ZZ> is the amount of RAM in Megabyte. You have to set –Xmx<ZZ>m and –Xms<ZZ>m to the same value, otherwise Elasticserach will not start.

  5. Open an editor with an empty file:

    sudo systemctl edit elasticsearch.service

  6. Configure the restart of the Elasticsearch service in case of failure by adding the following lines to the file:

    [Service]
Restart=always
RestartSec=60

  7. Save the file.

  8. Restart Elasticsearch:

    sudo systemctl restart elasticsearch

Configuring Kibana

  1. In the /opt/seal/etc/kibana.yml file, activate the following setting:

    server.host: "0.0.0.0"

  2. Restart Kibana:

    sudo systemctl restart seal-kibana

Adding the seal User to the elasticsearch Group

During the installation, the seal user and the seal user group are created. All PLOSSYS 5 services are started with the seal user. All users of the seal user group have the following privileges:

  • Modifying the configuration files

  • Accessing the log files

  • Starting and stopping the PLOSSYS 5 services

The PLOSSYS 5 administrator (seal) has to be a member of the elasticsearch user group, too, to able to open the Elasticsearch log files.

Execute the following command to add a user to the necessary user groups:

sudo usermod --append --groups seal,elasticsearch seal
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