Configure a cluster

Lisa Vaysman, Daria Barysheva
IMPORTANT
There is usually no need to change cluster configuration parameters. You can leave all parameters at the default values.

After creation a new cluster, you can configure it by performing the following steps:

  1. Select a cluster on the Clusters page. To do this, click a cluster name in the Name column.

    Select a cluster
    Select a cluster

  2. Open the Configuration tab on the cluster page. The Configuration tab includes the following sections: Primary configuration, Configuration groups, Ansible settings.

  3. Fill in all necessary parameters on the selected tab and click Save.

Primary configuration

The Configuration → Primary configuration tab allows you to configure the general cluster settings.

Available configuration parameters are listed below:

  • The Reliability control section. It is displayed if the Show advanced switch is activated. The section contains the following parameters:

    • retries — the number of retries for cluster operations (20 by default);

    • delay — the delay between retries in seconds (10 by default);

    • timeout — timeout for checks of network ports in seconds (60 by default).

  • The SSL Configuration section. It is displayed if the Show advanced switch is activated. The section contains the following parameters:

    Parameter Description Default value

    SSL enabled

    Indicates whether SSL is enabled or not

    false

    Certificate file

    An absolute file path to the Privacy-Enhanced Mail (PEM) certificate on the cluster hosts. The file must contain Subject Alternative Name (SAN):

    • FQDN

    • short hostname

    • localhost

    • primary IP address

    • 127.0.0.1

    /opt/adm/tls/server.crt

    Private key file

    An absolute file path to the private key on the cluster hosts

    /opt/adm/tls/server.key
The cluster configuration window
The cluster configuration window

Configuration groups

The Configuration → Configuration groups tab is designed to set cluster configuration groups. For details, please see Set up configuration groups.

Ansible settings

The Configuration → Ansible settings tab allows you to set Ansible configuration options at the cluster level. The tab is available starting with ADCM 2.2.0.

Ansible settings
Name Description Default

forks

The number of parallel processes to spawn when communicating with remote hosts

5
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