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merge latest master - fix conflits
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<blockquote>
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<p><strong>Note:</strong></p>
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<p>The <code>rancher/rancher</code> container is hosted on <a href="https://hub.docker.com/r/rancher/rancher/tags/">DockerHub</a>. If you don't have access to DockerHub, or you are installing Rancher without an Internet connection, refer to <a href="/rancher/v2.x/en/installation/air-gap-installation/">Air Gap Installation</a>.</p>
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<p>The <code>rancher/rancher</code> container is hosted on <a href="https://hub.docker.com/r/rancher/rancher/tags/">DockerHub</a>. If you don't have access to DockerHub, or you are installing Rancher without an Internet connection, refer to <a href="/docs/rancher/v2.x/en/installation/air-gap-installation/">Air Gap Installation</a>.</p>
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<p><strong>Note:</strong></p>
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<p>For a list of other Rancher Server tags available, refer to <a href="/rancher/v2.x/en/installation/server-tags/">Rancher Server Tags</a>.</p>
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<p>For a list of other Rancher Server tags available, refer to <a href="/docs/rancher/v2.x/en/installation/server-tags/">Rancher Server Tags</a>.</p>
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</blockquote>
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<h3 id="amazonec2-securitygroup-nodedriver">Amazon EC2 security group when using Node Driver</h3>
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<p>If you are <a href="/rancher/v2.x/en/cluster-provisioning/rke-clusters/node-pools/ec2/">Creating an Amazon EC2 Cluster</a>, you can choose to let Rancher create a Security Group called <code>rancher-nodes</code>. The following rules are automatically added to this Security Group.
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</p>
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<div>
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<p><strong>Security group: rancher-nodes</strong></p>
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<h4>Inbound rules</h4>
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<table>
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<tr>
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<th>Type</th>
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<th>Protocol</th>
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<th align="left">Port Range</th>
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<th align="left">Source</th>
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</tr>
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<tr>
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<td>SSH</td>
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<td>TCP</td>
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<td>22</td>
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<td>0.0.0.0/0</td>
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</tr>
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<tr>
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<td>HTTP</td>
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<td>TCP</td>
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<td>80</td>
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<td>0.0.0.0/0</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>443</td>
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<td>0.0.0.0/0</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>2376</td>
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<td>0.0.0.0/0</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>2379-2380</td>
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<td>sg-xxx (rancher-nodes)</td>
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</tr>
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<tr>
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<td>Custom UDP Rule</td>
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<td>UDP</td>
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<td>4789</td>
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<td>sg-xxx (rancher-nodes)</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>6443</td>
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<td>0.0.0.0/0</td>
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</tr>
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<tr>
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<td>Custom UDP Rule</td>
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<td>UDP</td>
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<td>8472</td>
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<td>sg-xxx (rancher-nodes)</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>10250-10252</td>
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<td>sg-xxx (rancher-nodes)</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>10256</td>
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<td>sg-xxx (rancher-nodes)</td>
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</tr>
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<tr>
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<td>Custom TCP Rule</td>
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<td>TCP</td>
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<td>30000-32767</td>
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<td>0.0.0.0/0</td>
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</tr>
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<tr>
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<td>Custom UDP Rule</td>
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<td>UDP</td>
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<td>30000-32767</td>
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<td>0.0.0.0/0</td>
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</tr>
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</table>
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<h4>Outbound rules</h4>
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<table>
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<tr>
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<th>Type</th>
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<th>Protocol</th>
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<th align="left">Port Range</th>
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<th align="left">Destination</th>
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</tr>
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<tr>
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<td>All traffic</td>
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<td>All</td>
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<td>All</td>
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<td>0.0.0.0/0</td>
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</tr>
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</table>
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<br/>
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</div>
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@@ -2,6 +2,6 @@
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<ul>
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<li>Ubuntu 16.04 (64-bit)</li>
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<li>Red Hat Enterprise Linux 7.5 (64-bit)</li>
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<li>RancherOS 1.3.0 (64-bit)</li>
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<li>RancherOS 1.4 (64-bit)</li>
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</ul>
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</div>
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@@ -1,10 +1,9 @@
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<p>Add one or more <strong>Node Pools</strong> to your cluster.<br/><br/>A <strong>Node Pool</strong> is a collection of nodes based on a Node Template. A Node Template defines the configuration of a Node, like what Operating System image, number of CPUs and amount of RAM. Each Node Pool can have one or more Nodes Roles associated with it.</p>
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<p>Add one or more <strong>node pools</strong> to your cluster.<br/><br/>A <strong>node pool</strong> is a collection of nodes based on a node template. A node Template defines the configuration of a node, like what Operating System to use, number of CPUs and amount of memory. Each node pool must have one or more nodes roles assigned.</p>
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<blockquote>
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<p><strong>Notes:</strong></p>
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<ul>
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<li>After you create a Node Template, it will be saved and you will be able to re-use it in additional Node Pools.</li>
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<li>Each Node Role (i.e. <code>etcd</code>, <code>Control Plane</code>, and <code>Worker</code>) must be fulfilled. Although it is possible to apply multiple Node Roles to a Node Pool, this is not recommended.</li>
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<li>The recommended setup is to have a Node Pool with the <code>etcd</code> Node Role and a count of three, a Node Pool with the <code>Control Plane</code> Node Role and a count of at least two, and a Node Pool with the <code>Worker</code> Node Role and a count of at least two. Regarding the <code>etcd</code> Node Role, refer to the <a href="https://coreos.com/etcd/docs/latest/v2/admin_guide.html#optimal-cluster-size" target="_blank">etcd Admin Guide</a>.</li>
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<li>Each node role (i.e. <code>etcd</code>, <code>Control Plane</code>, and <code>Worker</code>) should be assigned to a distinct node pool. Although it is possible to assign multiple node roles to a node pool, this should not be done for production clusters. </li>
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<li>The recommended setup is to have a node pool with the <code>etcd</code> node role and a count of three, a node pool with the <code>Control Plane</code> node role and a count of at least two, and a node pool with the <code>Worker</code> node role and a count of at least two. Regarding the <code>etcd</code> node role, refer to the <a href="https://coreos.com/etcd/docs/latest/v2/admin_guide.html#optimal-cluster-size" target="_blank">etcd Admin Guide</a>.</li>
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</ul>
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</blockquote>
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