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                    <h1 id="add-dbaagreplica">Add-DbaAgReplica</h1>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Author</strong></td>
<td>Chrissy LeMaire (@cl), netnerds.net</td>
</tr>
<tr>
<td><strong>Availability</strong></td>
<td>Windows, Linux, macOS</td>
</tr>
</tbody>
</table>
<p> </p>
<p>Want to see the source code for this command? Check out <a href="https://github.com/dataplat/dbatools/blob/master/public/Add-DbaAgReplica.ps1">Add-DbaAgReplica</a> on GitHub.
<br>
Want to see the Bill Of Health for this command? Check out <a href="https://dataplat.github.io/boh#Add-DbaAgReplica">Add-DbaAgReplica</a>.</p>
<h2 id="synopsis">Synopsis</h2>
<p>Adds a replica to an availability group on one or more SQL Server instances.</p>
<h2 id="description">Description</h2>
<p>Adds a replica to an availability group on one or more SQL Server instances.</p>
<p>Automatically creates database mirroring endpoints if required.</p>
<h2 id="syntax">Syntax</h2>
<pre><code>Add-DbaAgReplica
    [-SqlInstance] &lt;DbaInstanceParameter[]&gt;
    [[-SqlCredential] &lt;PSCredential&gt;]
    [[-Name] &lt;String&gt;]
    [[-ClusterType] &lt;String&gt;]
    [[-AvailabilityMode] &lt;String&gt;]
    [[-FailoverMode] &lt;String&gt;]
    [[-BackupPriority] &lt;Int32&gt;]
    [[-ConnectionModeInPrimaryRole] &lt;String&gt;]
    [[-ConnectionModeInSecondaryRole] &lt;String&gt;]
    [[-SeedingMode] &lt;String&gt;]
    [[-Endpoint] &lt;String&gt;]
    [[-EndpointUrl] &lt;String[]&gt;]
    [-Passthru]
    [[-ReadOnlyRoutingList] &lt;String[]&gt;]
    [[-ReadonlyRoutingConnectionUrl] &lt;String&gt;]
    [[-Certificate] &lt;String&gt;]
    [-ConfigureXESession]
    [[-SessionTimeout] &lt;Int32&gt;]
    [-InputObject] &lt;AvailabilityGroup&gt;
    [-EnableException]
    [-WhatIf]
    [-Confirm]
    [&lt;CommonParameters&gt;]

</code></pre>
<p> </p>
<h2 id="examples">Examples</h2>
<p> </p>
<h5 id="example-1">Example:  1</h5>
<pre><code>PS C:\&gt; Get-DbaAvailabilityGroup -SqlInstance sql2017a -AvailabilityGroup SharePoint | Add-DbaAgReplica -SqlInstance sql2017b
</code></pre>
<p>Adds sql2017b to the SharePoint availability group on sql2017a<br></p>
<h5 id="example-2">Example:  2</h5>
<pre><code>PS C:\&gt; Get-DbaAvailabilityGroup -SqlInstance sql2017a -AvailabilityGroup SharePoint | Add-DbaAgReplica -SqlInstance sql2017b -FailoverMode Manual
</code></pre>
<p>Adds sql2017b to the SharePoint availability group on sql2017a with a manual failover mode.<br></p>
<h5 id="example-3">Example:  3</h5>
<pre><code>PS C:\&gt; Get-DbaAvailabilityGroup -SqlInstance sql2017a -AvailabilityGroup SharePoint | Add-DbaAgReplica -SqlInstance sql2017b -EndpointUrl 'TCP://sql2017b.specialnet.local:5022'
</code></pre>
<p>Adds sql2017b to the SharePoint availability group on sql2017a with a custom endpoint URL.<br></p>
<h3 id="required-parameters">Required Parameters</h3>
<h5 id="sqlinstance">-SqlInstance</h5>
<p>The target SQL Server instance or instances. Server version must be SQL Server version 2012 or higher. <br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>True</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="inputobject">-InputObject</h5>
<p>Enables piping from Get-DbaAvailabilityGroup. <br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>True</td>
</tr>
<tr>
<td>Pipeline</td>
<td>true (ByValue)</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="optional-parameters">Optional Parameters</h3>
<h5 id="sqlcredential">-SqlCredential</h5>
<p>Login to the target instances using alternative credentials. Accepts PowerShell credentials (Get-Credential).<br />
Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.<br />
For MFA support, please use Connect-DbaInstance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="name">-Name</h5>
<p>The name of the replica. Defaults to the SQL Server instance name.<br />
This parameter is only supported if the replica is added to just one instance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="clustertype">-ClusterType</h5>
<p>Cluster type of the Availability Group. Only supported in SQL Server 2017 and above.<br />
Options include: Wsfc, External or None.<br />
Defaults to Wsfc (Windows Server Failover Cluster).<br />
The default can be changed with:<br />
Set-DbatoolsConfig -FullName 'AvailabilityGroups.Default.ClusterType' -Value '...' -Passthru | Register-DbatoolsConfig<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>(Get-DbatoolsConfigValue -FullName 'AvailabilityGroups.Default.ClusterType' -Fallback 'Wsfc')</td>
</tr>
<tr>
<td>Accepted Values</td>
<td>Wsfc,External,None</td>
</tr>
</tbody>
</table>
<h5 id="availabilitymode">-AvailabilityMode</h5>
<p>Sets the availability mode of the availability group replica. Options are: AsynchronousCommit and SynchronousCommit. SynchronousCommit is default.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>SynchronousCommit</td>
</tr>
<tr>
<td>Accepted Values</td>
<td>AsynchronousCommit,SynchronousCommit</td>
</tr>
</tbody>
</table>
<h5 id="failovermode">-FailoverMode</h5>
<p>Sets the failover mode of the availability group replica. Options are Automatic and Manual. Automatic is default.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>Automatic</td>
</tr>
<tr>
<td>Accepted Values</td>
<td>Automatic,Manual,External</td>
</tr>
</tbody>
</table>
<h5 id="backuppriority">-BackupPriority</h5>
<p>Sets the backup priority availability group replica. Default is 50.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>50</td>
</tr>
</tbody>
</table>
<h5 id="connectionmodeinprimaryrole">-ConnectionModeInPrimaryRole</h5>
<p>Specifies the connection intent mode of an Availability Replica in primary role. AllowAllConnections by default.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>AllowAllConnections</td>
</tr>
<tr>
<td>Accepted Values</td>
<td>AllowAllConnections,AllowReadWriteConnections</td>
</tr>
</tbody>
</table>
<h5 id="connectionmodeinsecondaryrole">-ConnectionModeInSecondaryRole</h5>
<p>Specifies the connection modes of an Availability Replica in secondary role.<br />
Options include: AllowNoConnections, AllowReadIntentConnectionsOnly,  AllowAllConnections<br />
Defaults to AllowNoConnections.<br />
The default can be changed with:<br />
Set-DbatoolsConfig -FullName 'AvailabilityGroups.Default.ConnectionModeInSecondaryRole' -Value '...' -Passthru | Register-DbatoolsConfig<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>(Get-DbatoolsConfigValue -FullName 'AvailabilityGroups.Default.ConnectionModeInSecondaryRole' -Fallback 'AllowNoConnections')</td>
</tr>
<tr>
<td>Accepted Values</td>
<td>AllowNoConnections,AllowReadIntentConnectionsOnly,AllowAllConnections,No,Read-intent only,Yes</td>
</tr>
</tbody>
</table>
<h5 id="seedingmode">-SeedingMode</h5>
<p>Specifies how the secondary replica will be initially seeded.<br />
Automatic enables direct seeding. This method will seed the secondary replica over the network. This method does not require you to backup and restore a copy of the primary database on the replica.<br />
Manual requires you to create a backup of the database on the primary replica and manually restore that backup on the secondary replica.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
<tr>
<td>Accepted Values</td>
<td>Automatic,Manual</td>
</tr>
</tbody>
</table>
<h5 id="endpoint">-Endpoint</h5>
<p>By default, this command will attempt to find a DatabaseMirror endpoint. If one does not exist, it will create it.<br />
If an endpoint must be created, the name &quot;hadr_endpoint&quot; will be used. If an alternative is preferred, use Endpoint.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="endpointurl">-EndpointUrl</h5>
<p>By default, the property Fqdn of Get-DbaEndpoint is used as EndpointUrl.<br />
Use EndpointUrl if a different URL is required due to special network configurations.<br />
EndpointUrl has to be an array of strings in format 'TCP://system-address:port', one entry for every instance.<br />
See details at: <a href="https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/specify-endpoint-url-adding-or-modifying-availability-replica">https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/specify-endpoint-url-adding-or-modifying-availability-replica</a><br />
If an endpoint must be created, EndpointUrl will be used for configuration, if system-address is an ipv4 address.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="passthru">-Passthru</h5>
<p>Don't create the replica, just pass thru an object that can be further customized before creation.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="readonlyroutinglist">-ReadOnlyRoutingList</h5>
<p>Sets the read only routing ordered list of replica server names to use when redirecting read-only connections through this availability replica.<br />
This parameter is only supported if the replica is added to just one instance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="readonlyroutingconnectionurl">-ReadonlyRoutingConnectionUrl</h5>
<p>Sets the read only routing connection url for the availability replica.<br />
This parameter is only supported if the replica is added to just one instance.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="certificate">-Certificate</h5>
<p>Specifies that the endpoint is to authenticate the connection using the certificate specified by certificate_name to establish identity for authorization.<br />
The far endpoint must have a certificate with the public key matching the private key of the specified certificate.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="configurexesession">-ConfigureXESession</h5>
<p>Configure the AlwaysOn_health extended events session to start automatically as the SSMS wizard would do.<br />
<a href="https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/always-on-extended-events#BKMK_alwayson_health">https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/always-on-extended-events#BKMK_alwayson_health</a><br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="sessiontimeout">-SessionTimeout</h5>
<p>How many seconds an availability replica waits for a ping response from a connected replica before considering the connection to have failed.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>0</td>
</tr>
</tbody>
</table>
<h5 id="enableexception">-EnableException</h5>
<p>By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.<br />
This avoids overwhelming you with &quot;sea of red&quot; exceptions, but is inconvenient because it basically disables advanced scripting.<br />
Using this switch turns this &quot;nice by default&quot; feature off and enables you to catch exceptions with your own try/catch.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<h5 id="whatif">-WhatIf</h5>
<p>Shows what would happen if the command were to run. No actions are actually performed.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td>wi</td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="confirm">-Confirm</h5>
<p>Prompts you for confirmation before executing any changing operations within the command.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td>cf</td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<p> </p>

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