cloudstack/docs/tmp/en-US/xml/add-loadbalancer-rule-vpc.xml

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<section id="add-loadbalancer-rule-vpc" lang="en-US">
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 --> <title>Adding Load Balancing Rules on a VPC</title>
	 <para>
		A &PRODUCT; user or administrator may create load balancing rules that balance traffic received at a public IP to one or more VMs that belong to a network tier that provides load balancing service in a VPC. A user creates a rule, specifies an algorithm, and assigns the rule to a set of VMs within a VPC.
	</para>
	 <orderedlist>
		<listitem>
			<para>
				Log in to the &PRODUCT; UI as an administrator or end user.
			</para>

		</listitem>
		 <listitem>
			<para>
				In the left navigation, choose Network.
			</para>

		</listitem>
		 <listitem>
			<para>
				In the Select view, select VPC.
			</para>
			 <para>
				All the VPCs that you have created for the account is listed in the page.
			</para>

		</listitem>
		 <listitem>
			<para>
				Click the Configure button of the VPC to which you want to configure load balancing rules.
			</para>
			 <para>
				The VPC page is displayed where all the tiers you created are listed in a diagram.
			</para>

		</listitem>
		 <listitem>
			<para>
				Click the Settings icon.
			</para>
			 <para>
				The following options are displayed.
			</para>
			 <itemizedlist>
				<listitem>
					<para>
						IP Addresses
					</para>

				</listitem>
				 <listitem>
					<para>
						Gateways
					</para>

				</listitem>
				 <listitem>
					<para>
						Site-to-Site VPN
					</para>

				</listitem>
				 <listitem>
					<para>
						Network ACLs
					</para>

				</listitem>

			</itemizedlist>

		</listitem>
		 <listitem>
			<para>
				Select IP Addresses.
			</para>
			 <para>
				The IP Addresses page is displayed.
			</para>

		</listitem>
		 <listitem>
			<para>
				Click the IP address for which you want to create the rule, then click the Configuration tab.
			</para>

		</listitem>
		 <listitem>
			<para>
				In the Load Balancing node of the diagram, click View All.
			</para>

		</listitem>
		 <listitem>
			<para>
				Select the tier to which you want to apply the rule.
			</para>
			 <note>
				<para>
					In a VPC, the load balancing service is supported only on a single tier.
				</para>

			</note>

		</listitem>
		 <listitem>
			<para>
				Specify the following:
			</para>
			 <itemizedlist>
				<listitem>
					<para>
						<emphasis role="bold">Name</emphasis>: A name for the load balancer rule.
					</para>

				</listitem>
				 <listitem>
					<para>
						<emphasis role="bold">Public Port</emphasis>: The port that receives the incoming traffic to be balanced.
					</para>

				</listitem>
				 <listitem>
					<para>
						<emphasis role="bold">Private Port</emphasis>: The port that the VMs will use to receive the traffic.
					</para>

				</listitem>
				 <listitem>
					<para>
						<emphasis role="bold">Algorithm</emphasis>. Choose the load balancing algorithm you want &PRODUCT; to use. &PRODUCT; supports the following well-known algorithms:
					</para>
					 <itemizedlist>
						<listitem>
							<para>
								Round-robin
							</para>

						</listitem>
						 <listitem>
							<para>
								Least connections
							</para>

						</listitem>
						 <listitem>
							<para>
								Source
							</para>

						</listitem>

					</itemizedlist>

				</listitem>
				 <listitem>
					<para>
						<emphasis role="bold">Stickiness</emphasis>. (Optional) Click Configure and choose the algorithm for the stickiness policy. See Sticky Session Policies for Load Balancer Rules.
					</para>

				</listitem>
				 <listitem>
					<para>
						<emphasis role="bold">Add VMs</emphasis>: Click Add VMs, then select two or more VMs that will divide the load of incoming traffic, and click Apply.
					</para>

				</listitem>

			</itemizedlist>

		</listitem>

	</orderedlist>
	 <para>
		The new load balancing rule appears in the list. You can repeat these steps to add more load balancing rules for this IP address.
	</para>
</section>