Add components

Daria Barysheva, Eugenia Kuzina

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In ADCM, a component means a part of a service that should be deployed on one or several cluster hosts.

IMPORTANT

Initially, there are no components on any of cluster hosts. You should map components to hosts manually.

The steps for adding components to hosts are listed below:

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

Select a cluster
Open the Mapping tab on the cluster page.

Switch to mapping service components

In the window that opens, map components to hosts. To assign hosts for each component, click Add hosts and select hosts in the pop-up window.

Select hosts for a component

Mandatory components

Each service can have mandatory and optional components. Mandatory components are highlighted in red. The ADCM UI also displays how many mandatory components should be installed.

Mandatory components

Currently, ADP and NTP Master components are mandatory and should be placed on one host.

CAUTION

Without assigning a necessary number of hosts to mandatory components, the component mapping cannot be saved.

Example of components distribution for the ADP Enterprise Edition

Host

Service

Component

Notes

Host 1

ADPG

Can be a leader or replica in the HA architecture

ADP ES Agents

ADP Control Agent

An agent that allows you to manage an ADP cluster with ADP ES

ADP Control ADBM Agent

A backup manager agent that ADP ES uses

Chrony

NTP Master

—

Monitoring

ADPG Exporter

Sends PostgreSQL metrics to Prometheus. It should be installed on all hosts with the ADPG service

PgBouncer Exporter

Sends PgBouncer metrics to Prometheus. It should be installed on all hosts with the ADPG service

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 2

ADPG

Can be a leader or replica in the HA architecture

ADP ES Agents

ADP Control Agent

An agent that allows you to manage an ADP cluster with ADP ES

ADP Control ADBM Agent

A backup manager agent that ADP ES uses

Chrony

NTP Secondary

—

Monitoring

ADPG Exporter

Sends PostgreSQL metrics to Prometheus. It should be installed on all hosts with the ADPG service

PgBouncer Exporter

Sends PgBouncer metrics to Prometheus. It should be installed on all hosts with the ADPG service

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 3

ADPG

Can be a leader or replica in the HA architecture

ADP ES Agents

ADP Control Agent

An agent that allows you to manage an ADP cluster with ADP ES

ADP Control ADBM Agent

A backup manager agent that ADP ES uses

Chrony

NTP Secondary

—

Monitoring

ADPG Exporter

Sends PostgreSQL metrics to Prometheus. It should be installed on all hosts with the ADPG service

PgBouncer Exporter

Sends PgBouncer metrics to Prometheus. It should be installed on all hosts with the ADPG service

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 4

Etcd

You must use an odd number of nodes for the Etcd component. Three or more nodes are recommended

Chrony

NTP Slave

—

Monitoring

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 5

Etcd

You must use an odd number of nodes for the Etcd component. Three or more nodes are recommended

Chrony

NTP Slave

—

Monitoring

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 6

Etcd

You must use an odd number of nodes for the Etcd component. Three or more nodes are recommended

Chrony

NTP Slave

—

Monitoring

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 7

Balancer

HAProxy

—

Monitoring

Node Exporter

Sends system metrics to Prometheus. It should be installed on all hosts from which system metrics need to be collected

Host 8

Monitoring

Prometheus

The Prometheus server that collects and stores metrics

Grafana

The Grafana web interface for creating dashboards to visualize metrics. It is recommended to install Grafana to the host with a Prometheus server

After component distribution is completed, click Save.

Save mapping of components

Starting with ADCM 2.2.0, you can use another mapping mode — by hosts. To do this, switch on the Hosts mode toggle and map components to hosts by clicking Add components for each host sequentially.

Use mapping by hosts

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