Add components
In ADCM a component means a part of a service that should be deployed on one or several cluster hosts.
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IMPORTANT
Initially, there are no components on any of cluster hosts. You should map components to hosts manually.
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The steps for adding components to hosts are listed below:
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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 componentMandatory 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 componentsCAUTIONWithout assigning a necessary number of hosts to mandatory components, the component mapping cannot be saved.The typical scheme of components distribution for ADQM clusters is described in the table below.
ADQM components distribution Host Service Component Notes Any host
ADQMDB
Clickhouse Server
One or more components should be installed
All hosts with Clickhouse Server
ADQMDB
Clickhouse JDBC Bridge
If you install this component (optionally), add it to all hosts in the cluster where the Clickhouse Server component is installed
Any host
Zookeeper
Zookeeper Server
One or more components should be installed. Total amount should be odd
Any host
Clickhousekeeper
Clickhouse Keeper Server
One or more components should be installed. Total amount should be odd
Any host
Chproxy
Chproxy Proxy Server
One or more components should be installed
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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.
