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<!DOCTYPE html>
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<meta name="author" content="Rajula Vineet Reddy">
<title>Installing Kubernetes on LinuxOne - Canonical Distribution</title>
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<body class="article toc2 toc-left">
<div id="header">
<h1>Installing Kubernetes on LinuxOne - Canonical Distribution</h1>
<div class="details">
<span id="author" class="author">Rajula Vineet Reddy</span><br>
<span id="email" class="email"><a href="mailto:rajula96reddy@gmail.com">rajula96reddy@gmail.com</a></span><br>
<span id="revnumber">version 2.0,</span>
<span id="revdate">2018-08-11</span>
</div>
<div id="toc" class="toc2">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#_versions_of_all_the_components_used">Versions of all the components used</a></li>
<li><a href="#_setting_up_the_nodes_before_installing_the_components">Setting up the Nodes before installing the components</a></li>
<li><a href="#_installing_kubernetes_binaries_on_the_nodes">Installing Kubernetes binaries on the Nodes</a>
<ul class="sectlevel2">
<li><a href="#_master_node">Master Node</a></li>
<li><a href="#_worker_node">Worker Node</a></li>
</ul>
</li>
<li><a href="#_creating_certificates_authentication_to_enable_secure_communication_across_all_the_kubernetes_components">Creating Certificates & Authentication to enable secure communication across all the Kubernetes components</a>
<ul class="sectlevel2">
<li><a href="#_generating_certificates">Generating Certificates</a></li>
<li><a href="#_generating_kubeconfig_files">Generating Kubeconfig files</a></li>
</ul>
</li>
<li><a href="#_setting_up_etcd">Setting up Etcd</a>
<ul class="sectlevel2">
<li><a href="#_installing_etcd">Installing Etcd</a></li>
<li><a href="#_configuring_etcd">Configuring Etcd</a></li>
<li><a href="#_test_etcd_cluster">Test etcd cluster</a></li>
</ul>
</li>
<li><a href="#_setting_up_flannel">Setting up Flannel</a>
<ul class="sectlevel2">
<li><a href="#_installing_flannel">Installing Flannel</a></li>
<li><a href="#_running_flanneld_as_a_systemd_service">Running Flanneld as a systemd service</a></li>
<li><a href="#_testing_flanneld">Testing flanneld</a></li>
</ul>
</li>
<li><a href="#_setting_up_kubernetes_components">Setting up Kubernetes Components</a>
<ul class="sectlevel2">
<li><a href="#_master_components">Master Components</a></li>
<li><a href="#_worker_components">Worker Components</a></li>
</ul>
</li>
<li><a href="#_testing_the_cluster">Testing the cluster</a>
<ul class="sectlevel2">
<li><a href="#_test_if_kuberenetes_api_server_is_running">Test if Kuberenetes Api Server is Running</a></li>
<li><a href="#_test_if_all_the_components_are_healthy">Test if all the components are healthy</a></li>
<li><a href="#_test_if_the_node_is_registered">Test if the node is registered</a></li>
<li><a href="#_deploy_ngninx">Deploy ngninx</a></li>
</ul>
</li>
<li><a href="#_setting_up_kube_dns">Setting up Kube-dns</a></li>
<li><a href="#_troubleshooting">Troubleshooting</a></li>
</ul>
</div>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p><strong>Note:</strong> This setup documents running a two node (1 Master & 1 Worker) Kubernetes Cluster
on LinuxOne cloud using LinuxOne supported linux distribution <strong>Canonical Ubuntu 18.04</strong>.</p>
</div>
<div class="paragraph">
<p>Also please do note that, all the lines starting with <strong>#</strong> in the code blocks
are comments and are not intended to be ran, although they are harmless when ran ;).</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_versions_of_all_the_components_used">Versions of all the components used</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The cluster is based on <strong>docker</strong> as container run-time and the components are installed as <strong>systemd</strong> services
with <strong>flannel</strong> as the overlay networking model. The versions of each components used are as follows</p>
</div>
<table class="tableblock frame-all grid-all" style="width: 70%;">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Component/ Infrastructure</th>
<th class="tableblock halign-left valign-top">Version</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">LinuxOne Instance flavour</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">LinuxONE-Medium</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">LinuxOne Instance OS</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">Ubuntu 18.04</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Kubernetes</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1.9.8</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Docker</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">17.12.1-ce</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Etcd</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">3.2.9</p></td>
</tr>
</tbody>
<tfoot>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Flannel</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">0.10.0</p></td>
</tr>
</tfoot>
</table>
</div>
</div>
<div class="sect1">
<h2 id="_setting_up_the_nodes_before_installing_the_components">Setting up the Nodes before installing the components</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This setup requires about 2 LinuxOne cloud instances. One for master and one for worker. Make sure you install Ubuntu on both the
instances.
SSH into the nodes and follow the below steps in the nodes specified across each step</p>
</div>
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Set the hostnames for each of the nodes using the utility <code>hostnamectl</code> as follows. Preferrably
set the hostnames as <strong>k8s-master</strong> & <strong>k8s-worker</strong> respectively.</p>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code># On Master Node
sudo hostnamectl set-hostname k8s-master
# On Worker Node
sudo hostnamectl set-hostname k8s-worker</code></pre>
</div>
</div>
</li>
<li>
<p>Note down the IP addresses of both the nodes. In the context of this document, IP addresses of the nodes
are as follows</p>
<table class="tableblock frame-all grid-all" style="width: 50%;">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Node</th>
<th class="tableblock halign-left valign-top">IP</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Master</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="red">148.100.99.99</span></p></td>
</tr>
</tbody>
<tfoot>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Worker</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="red">148.100.99.100</span></p></td>
</tr>
</tfoot>
</table>
</li>
<li>
<p>Install vim, net-tools and snap on both the nodes. Vim is needed to edit files, although preinstalled nano can be used.
Curl is needed to test services running on a pod during the testing. Net-tools is needed to test and troubleshoot working of <strong>flannel</strong>. Snap is the package manager we will be using
to install Kubernetes components.</p>
<div class="literalblock">
<div class="content">
<pre>sudo apt-get -y install vim curl net-tools snapd</pre>
</div>
</div>
</li>
<li>
<p>Install docker on Worker node(s).</p>
<div class="literalblock">
<div class="content">
<pre>sudo apt install docker.io
sudo systemctl enable docker.service
sudo systemctl start docker.service</pre>
</div>
</div>
</li>
<li>
<p>Enable IP forward settings on all the worker node(s) so that, the containers are able to ping the internet using the following commands</p>
<div class="literalblock">
<div class="content">
<pre>sysctl -w net.ipv4.ip_forward=1
sysctl -w net.ipv4.conf.all.forwarding=1
sysctl -w net.bridge.bridge-nf-call-iptables=1</pre>
</div>
</div>
</li>
<li>
<p>Create the below folders in order to save certificates & configuration files later</p>
<div class="ulist">
<ul>
<li>
<p>On Master Node</p>
<div class="literalblock">
<div class="content">
<pre>sudo mkdir -p /root/srv/kubernetes
sudo mkdir /var/lib/flanneld/</pre>
</div>
</div>
</li>
<li>
<p>On Worker Node(s)</p>
<div class="literalblock">
<div class="content">
<pre>sudo mkdir -p /root/srv/kubernetes
sudo mkdir /var/lib/flanneld/</pre>
</div>
</div>
</li>
</ul>
</div>
</li>
<li>
<p>Kubernetes is doesn’t work as it is expected with swap memory on.
Disable swap space on the <strong>worker</strong> node(s), by running</p>
<div class="literalblock">
<div class="content">
<pre>swapoff -a
sudo sed -i 's/\/swapfile/#\/swapfile/g' /etc/fstab</pre>
</div>
</div>
</li>
<li>
<p>Copy the contents of SSH public key of the Master node in the <code>authorized_keys</code>
file on all the worker node(s). By doing this, we can <em>scp</em> files into the worker
node(s) from the master node without having to authenticate.</p>
<div class="literalblock">
<div class="content">
<pre># On the master node, check if you already have the file 'id_rsa.pub' in '.ssh/'. If not generate the key using the following steps
ssh-keygen
# Give default settings by pressing enter
cat .ssh/id_rsa.pub
#Copy the contents from the output of the above command
# On the worker node(s) paste the copied contents at the end in the file '.ssh/authorized_keys'
echo "<key_copied>" >> .ssh/authorized_keys</pre>
</div>
</div>
</li>
<li>
<p>It is recommended to login as root on all the nodes, as we will be dealing with files and tools which require
root permissions. You can login as root from another account using <code>sudo -i</code>. If not, use <strong>sudo</strong>
before a command wherever required. Anyways, just to be safe I will include sudo where required.</p>
</li>
</ol>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_installing_kubernetes_binaries_on_the_nodes">Installing Kubernetes binaries on the Nodes</h2>
<div class="sectionbody">
<div class="paragraph">
<p>In this setup, we will be using <strong><a href="http://snapcraft.io/">snap</a></strong> package
manager to install all the components. Run the following commands on
the respective nodes</p>
</div>
<div class="sect2">
<h3 id="_master_node">Master Node</h3>
<div class="literalblock">
<div class="content">
<pre>sudo snap install kube-apiserver --channel=1.9/stable --classic
sudo snap install kube-controller-manager --channel=1.9/stable --classic
sudo snap install kube-scheduler --channel=1.9/stable --classic
sudo snap install kubectl --channel=1.9/stable --classic</pre>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_worker_node">Worker Node</h3>
<div class="literalblock">
<div class="content">
<pre>sudo snap install kubelet --channel=1.9/stable --classic
sudo snap install kube-proxy --channel=1.9/stable --classic</pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_creating_certificates_authentication_to_enable_secure_communication_across_all_the_kubernetes_components">Creating Certificates & Authentication to enable secure communication across all the Kubernetes components</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Run all the following steps and thereby generate the files in the Master node, and then copy the
specific mentioned certs and config files to the worker nodes.</p>
</div>
<div class="sect2">
<h3 id="_generating_certificates">Generating Certificates</h3>
<div class="sect3">
<h4 id="_ca_certificate_authority">CA - Certificate Authority</h4>
<div class="literalblock">
<div class="content">
<pre>cd /root/srv/kubernetes
openssl genrsa -out ca-key.pem 2048
openssl req -x509 -new -nodes -key ca-key.pem -days 10000 -out ca.pem -subj "/CN=kube-ca"</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_master_node_openssl_config">Master Node OpenSSL config</h4>
<div class="literalblock">
<div class="content">
<pre>cat > openssl.cnf <<EOF
[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name
[req_distinguished_name]
[v3_req]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @alt_names
[alt_names]
DNS.1 = kubernetes
DNS.2 = kubernetes.default
DNS.3 = kubernetes.default.svc
DNS.4 = kubernetes.default.svc.cluster.local
IP.1 = 127.0.0.1
IP.2 = 148.100.99.99 # Master IP
IP.3 = 100.65.0.1 # Service IP
EOF</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kube_apiserver_certificates">Kube-apiserver certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out apiserver-key.pem 2048
openssl req -new -key apiserver-key.pem -out apiserver.csr -subj "/CN=kube-apiserver" -config openssl.cnf
openssl x509 -req -in apiserver.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial \
-out apiserver.pem -days 7200 -extensions v3_req -extfile openssl.cnf</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_admin_certificates">Admin certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out admin-key.pem 2048
openssl req -new -key admin-key.pem -out admin.csr -subj "/CN=admin"
openssl x509 -req -in admin.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out admin.pem -days 7200</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kube_controller_manager_certificates">Kube-controller-manager certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out kube-controller-manager-key.pem 2048
openssl req -new -key kube-controller-manager-key.pem -out kube-controller-manager.csr -subj "/CN=kube-controller-manager"
openssl x509 -req -in kube-controller-manager.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out kube-controller-manager.pem -days 7200</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kube_scheduler_certificates">Kube-scheduler certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out kube-scheduler-key.pem 2048
openssl req -new -key kube-scheduler-key.pem -out kube-scheduler.csr -subj "/CN=kube-scheduler"
openssl x509 -req -in kube-scheduler.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out kube-scheduler.pem -days 7200</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_worker_openssl_config">Worker OpenSSL config</h4>
<div class="literalblock">
<div class="content">
<pre>cat > worker-openssl.cnf << EOF
[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name
[req_distinguished_name]
[v3_req]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @alt_names
[alt_names]
IP.1 = 148.100.99.100
#IP.2 If more workers are to be configured
EOF</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kubelet_certificates">Kubelet certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out kubelet-key.pem 2048
openssl req -new -key kubelet-key.pem -out kubelet.csr -subj "/CN=kubelet" -config worker-openssl.cnf
openssl x509 -req -in kubelet.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out kubelet.pem -days 7200 -extensions v3_req -extfile worker-openssl.cnf</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kube_proxy_certificates">Kube-proxy certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out kube-proxy-key.pem 2048
openssl req -new -key kube-proxy-key.pem -out kube-proxy.csr -subj "/CN=kube-proxy"
openssl x509 -req -in kube-proxy.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out kube-proxy.pem -days 7200</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_worker_node_certificates">Worker node certificates</h4>
<div class="paragraph">
<p>Note: <strong>k8sworker</strong> here (and also in the next few steps) refers to the hostname of the worker & <strong>148.100.99.100</strong> refers to the worker node IP. Repeat the procedure after changing
the hostname and IP to configure more worker nodes.</p>
</div>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out k8sworker-worker-key.pem 2048
WORKER_IP=148.100.99.100 openssl req -new -key k8sworker-worker-key.pem -out k8sworker-worker.csr -subj "/CN=system:node:k8sworker" -config worker-openssl.cnf
WORKER_IP=148.100.99.100 openssl x509 -req -in k8sworker-worker.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out k8sworker-worker.pem -days 7200 -extensions v3_req -extfile worker-openssl.cnf</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_etcd_openssl_config">Etcd OpenSSL config</h4>
<div class="literalblock">
<div class="content">
<pre>cat > etcd-openssl.cnf <<EOF
[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name
[req_distinguished_name]
[ v3_req ]
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
extendedKeyUsage = clientAuth,serverAuth
subjectAltName = @alt_names
[alt_names]
IP.1 = 148.100.99.99
EOF</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_etcd_certificates">Etcd certificates</h4>
<div class="literalblock">
<div class="content">
<pre>openssl genrsa -out etcd.key 2048
openssl req -new -key etcd.key -out etcd.csr -subj "/CN=etcd" -extensions v3_req -config etcd-openssl.cnf -sha256
openssl x509 -req -sha256 -CA ca.pem -CAkey ca-key.pem -CAcreateserial \
-in etcd.csr -out etcd.crt -extensions v3_req -extfile etcd-openssl.cnf -days 7200</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_copy_the_required_certificates_to_the_worker_node">Copy the required certificates to the Worker node</h4>
<div class="literalblock">
<div class="content">
<pre># Run the below step on the Master node
scp ca.pem etcd.crt etcd.key kubelet.pem kubelet-key.pem root@148.100.99.100:/root/srv/kubernetes/</pre>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_generating_kubeconfig_files">Generating Kubeconfig files</h3>
<div class="sect3">
<h4 id="_admin_kubeconfig">Admin Kubeconfig</h4>
<div class="literalblock">
<div class="content">
<pre>TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
kubectl config set-cluster linux1.k8s --certificate-authority=/root/srv/kubernetes/ca.pem --embed-certs=true --server=https://148.100.99.99:6443
kubectl config set-credentials admin --client-certificate=/root/srv/kubernetes/admin.pem --client-key=/root/srv/kubernetes/admin-key.pem --embed-certs=true --token=$TOKEN
kubectl config set-context linux1.k8s --cluster=linux1.k8s --user=admin
kubectl config use-context linux1.k8s
cat ~/.kube/config #Create config file</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kube_controller_manager_kubeconfig">Kube-controller-manager Kubeconfig</h4>
<div class="literalblock">
<div class="content">
<pre>TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
kubectl config set-cluster linux1.k8s --certificate-authority=/root/srv/kubernetes/ca.pem --embed-certs=true --server=https://148.100.99.99:6443 --kubeconfig=/root/srv/kubernetes/kube-controller-manager.kubeconfig
kubectl config set-credentials kube-controller-manager --client-certificate=/root/srv/kubernetes/kube-controller-manager.pem --client-key=/root/srv/kubernetes/kube-controller-manager-key.pem --embed-certs=true --token=$TOKEN --kubeconfig=/root/srv/kubernetes/kube-controller-manager.kubeconfig
kubectl config set-context linux1.k8s --cluster=linux1.k8s --user=kube-controller-manager --kubeconfig=/root/srv/kubernetes/kube-controller-manager.kubeconfig
kubectl config use-context linux1.k8s --kubeconfig=/root/srv/kubernetes/kube-controller-manager.kubeconfig</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kube_scheduler_kubeconfig">Kube-scheduler Kubeconfig</h4>
<div class="literalblock">
<div class="content">
<pre>TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
kubectl config set-cluster linux1.k8s --certificate-authority=/root/srv/kubernetes/ca.pem --embed-certs=true --server=https://148.100.99.99:6443 --kubeconfig=/root/srv/kubernetes/kube-scheduler.kubeconfig
kubectl config set-credentials kube-scheduler --client-certificate=/root/srv/kubernetes/kube-scheduler.pem --client-key=/root/srv/kubernetes/kube-scheduler-key.pem --embed-certs=true --token=$TOKEN --kubeconfig=/root/srv/kubernetes/kube-scheduler.kubeconfig
kubectl config set-context linux1.k8s --cluster=linux1.k8s --user=kube-scheduler --kubeconfig=/root/srv/kubernetes/kube-scheduler.kubeconfig
kubectl config use-context linux1.k8s --kubeconfig=/root/srv/kubernetes/kube-scheduler.kubeconfig</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_kubelet_kubeconfig_for_each_worker_node">Kubelet Kubeconfig (for each Worker Node)</h4>
<div class="literalblock">
<div class="content">
<pre>TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
kubectl config set-cluster linux1.k8s --certificate-authority=/root/srv/kubernetes/ca.pem --embed-certs=true --server=https://148.100.99.99:6443 --kubeconfig=/root/srv/kubernetes/k8sworker-worker.kubeconfig
kubectl config set-credentials k8sworker --client-certificate=/root/srv/kubernetes/k8sworker-worker.pem --client-key=/root/srv/kubernetes/k8sworker-worker-key.pem --embed-certs=true --token=$TOKEN --kubeconfig=/root/srv/kubernetes/k8sworker-worker.kubeconfig
kubectl config set-context linux1.k8s --cluster=linux1.k8s --user=k8sworker --kubeconfig=/root/srv/kubernetes/k8sworker-worker.kubeconfig
kubectl config use-context linux1.k8s --kubeconfig=/root/srv/kubernetes/k8sworker-worker.kubeconfig</pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_copy_the_required_config_files_to_the_worker_nodes">Copy the required config files to the worker node(s)</h4>
<div class="paragraph">
<p>Similar to how we copied the certificates, we need to copy the configurations to the worker node(s)</p>
</div>
<div class="literalblock">
<div class="content">
<pre># Run the below command on the master node
scp k8sworker-worker.kubeconfig root@148.100.99.100:/root/srv/kubernetes/kubelet.kubeconfig</pre>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_setting_up_etcd">Setting up Etcd</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_installing_etcd">Installing Etcd</h3>
<div class="literalblock">
<div class="content">
<pre>snap install --channel=3.2 etcd --classic</pre>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_configuring_etcd">Configuring Etcd</h3>
<div class="paragraph">
<p>Create a file in <code>/var/snap/etcd/common/etcd.conf.yml</code> with the following contents</p>
</div>
<div class="literalblock">
<div class="content">
<pre># This is the configuration file for the etcd server.
# Human-readable name for this member.
name: 'master'
# Path to the data directory.
data-dir:
# Path to the dedicated wal directory.