How to Install Prometheus on Kubernetes Cluster | AWS | Ubuntu 16.04|

Step1: Create AMI instance of type Ubuntu Server 16.04 LTS using your AWS login

Step 2: Choose an Instance Type

Step 3: Configure Instance Details

Step 4: Add Storage

Step 5: Add Tags

Step 6: Configure Security Group

Step 7: Create a key pair

Step 8: Launch instance by using git bash terminal

sudo -i

Step 8: Set up Prometheus server in the cluster to run Kubernetes

apt-get update && apt-get install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
apt-get install -y kubelet=1.15.4-00 kubeadm=1.15.4-00 kubectl=1.15.4-00 docker.io

Step 9: Setup the Kubernetes Master

kubeadm init

Step 10: To start using your cluster, you need to run the following as a regular user:

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

Step 11: Update the yum package repositories.

sudo apt-get install yum*

Step 12: Create a Prometheus user, required directories, and make prometheus user as the owner of those directories.

sudo useradd --no-create-home --shell /bin/false prometheus
sudo mkdir /etc/prometheus
sudo mkdir /var/lib/prometheus
sudo chown prometheus:prometheus /etc/prometheus
sudo chown prometheus:prometheus /var/lib/prometheus

Step 13: Download the source using curl, untar it and rename the extracted folder to prometheus-files.

wget https://github.com/prometheus/prometh...
tar -xvf prometheus-2.20.1.linux-amd64.tar.gz
mv prometheus-2.20.1.linux-amd64 prometheus-files

Note: Get the latest download of Prometheus from Prometheus home page

Step 14: Copy prometheus and promtool binary from prometheus-files folder to /usr/local/bin and change the ownership to prometheus user.

sudo cp prometheus-files/prometheus /usr/local/bin/
sudo cp prometheus-files/promtool /usr/local/bin/
sudo chown prometheus:prometheus /usr/local/bin/prometheus
sudo chown prometheus:prometheus /usr/local/bin/promtool

Step 15: Move the consoles and console_libraries directories from prometheus-files to /etc/prometheus folder and change the ownership to prometheus user.

sudo cp -r prometheus-files/consoles /etc/prometheus
sudo cp -r prometheus-files/console_libraries /etc/prometheus
sudo chown -R prometheus:prometheus /etc/prometheus/consoles
sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries

Setup Prometheus Configuration. All the prometheus configurations should be present in /etc/prometheus/prometheus.yml file.

Step 16: Create the prometheus.yml file.

sudo vi /etc/prometheus/prometheus.yml

Paste the following content in the prometheus.yml

global:
 scrape_interval: 10s
scrape_configs:
 — job_name: ‘prometheus’
 scrape_interval: 5s
 static_configs:
 — targets: [‘localhost:9090’]

Note: Replace localhost here with public ip of your system

Step 17: Change the ownership of the file to prometheus user.

sudo chown prometheus:prometheus /etc/prometheus/prometheus.yml

Step 18: Setup Prometheus Service File to start automatically

sudo vi /etc/systemd/system/prometheus.service

Copy the following content to the file.

[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target
[Service]
User=prometheus
Group=prometheus
Type=simple
ExecStart=/usr/local/bin/prometheus \
 — config.file /etc/prometheus/prometheus.yml \
 — storage.tsdb.path /var/lib/prometheus/ \
 — web.console.templates=/etc/prometheus/consoles \
 — web.console.libraries=/etc/prometheus/console_libraries
[Install]
WantedBy=multi-user.target

Step 19: Reload the systemd service to register the prometheus service and start the prometheus service.

sudo systemctl daemon-reload
 sudo systemctl start prometheus

Check the status by using the following command

sudo systemctl status prometheus

Step 20: Before accessing the Web UI, you need to change the security group settings in the AWS by editing inbound rules and open the port 9090 where prometheus will be running

Step 21: Using your public ip and paste in the browser using the following command

http://localhost:9090/graph

Note: In the above local host is your public IP address