Installing Aerospike

To install the aerospike, follow the steps below:

1. Install Aerospike on the target VM and configure it to run as a service.

   wget -O aerospike.tgz
           https://enterprise.aerospike.com/.../el8_amd64
    tar -xzf aerospike.tgz
    cd
           aerospike-*/ 
    ./asinstall

2. Create systemd configuration:

   vi /etc/systemd/system/aerospike.service.d/user.conf
   
    [Service]
    User=aerospike
    Group=aerospike

3. Configure disks and ownership:

   lsblk  # check the instance store disk
    file -s /dev/nvme3n1
    vi /etc/udev/rules.d/99-aerospike.rules
    KERNEL=="nvme3n1", OWNER="aerospike"
   
    udevadm control --reload-rules
    udevadm trigger
    blkdiscard /dev/nvme3n1
    blkdiscard -z --length 8MiB /dev/nvme3n1

4. Update configuration:

   cd /etc/aerospike/
   vim aerospike.conf    # Update the Cluster host/port details and storage 
   vim features.conf   # Update the Licence Details
   mkdir -p /var/run/aerospike/
    mkdir -p /var/log/aerospike/
    chown -R aerospike: /var/run/aerospike/
    chown -R aerospike: /var/log/aerospike/
    chown -R aerospike: /opt/aerospike/

5. Enable required ports and start Aerospike:

   semanage port -a -t http_port_t -p tcp 13000-13003
   systemctl start aerospike
    systemctl status aerospike
   tail -F /var/log/aerospike/aerospike.log 

6. Use the following to verify Aerospike service and cluster:

   asadm -p 13000 -e 'info'
    asadm -p 13000 -e 'asinfo -v services'
          info
          show config
          asinfo -v services
          enable
          asinfo -v features
   
   nc -zv puapso1baxcdaerdbs1002.axcd.aws.hclsw.internal 13001

Installing Node Exporter

Node Exporter collects system metrics such as CPU, memory, disk, and network usage. These metrics are then scraped by Prometheus for monitoring and visualization.

1. Download and extract Node Exporter.

   wget
           https://github.com/prometheus/node_exporter/releases/download/v1.7.0/node_exporter-1.7.0.linux-amd64.tar.
   tar xfz node_exporter-1.7.0.linux-amd64.tar.gz

2. Move binary and create system user.

   sudo mv node_exporter-1.7.0.linux-amd64/node_exporter
           /usr/local/bin/
    sudo useradd -rs /bin/false node_exporter

3. Create a systemd service unit.

   vi /etc/systemd/system/node_exporter.service
   
    [Unit]
    Description=Node Exporter
    After=network.target
   
    [Service]
    User=node_exporter
    Group=node_exporter
    Type=simple
    ExecStart=/usr/local/bin/node_exporter
   
    [Install]
    WantedBy=multi-user.target

4. Set permissions and SELinux contexts.

   chown -R root: /usr/local/bin/node_exporter
    chmod -R 755 /usr/local/bin/node_exporter
    restorecon -Rv /usr/local/bin
    semanage port -l | grep 9100

5. Start and enable service.

   systemctl daemon-reload
    systemctl start node_exporter
    systemctl status node_exporter
    systemctl restart aerospike
    systemctl enable node_exporter

6. Validate metrics endpoint and exporter status.

   /usr/local/bin/node_exporter --help
    sudo -H -u node_exporter bash -c "/usr/local/bin/node_exporter"
    su -s /bin/bash node_exporter
    ps aux | grep node
    curl -kv  http://localhost:9100/metrics

Aerospike Prometheus Exporter

Install the exporter to expose Aerospike metrics to Prometheus.

1. Install Aerospike Prometheus exporter.

   wget https://github.com/aerospike/aerospike-prometheus-exporter/releases/download/v1.16.0/aerospike-prometheus-exporter-1.16.0-1.el8.x86_64.rpm
   rpm -Uvh aerospike-prometheus-exporter-1.16.0-1.el8.x86_64.rpm
    vim /usr/lib/systemd/system/aerospike-prometheus-exporter.service.
   
   [Unit]
   Description=Aerospike Prometheus Exporter Service
   Documentation=https://github.com/aerospike/aerospike-prometheus-exporter
   Wants=network.target
   After=network-online.target
   [Service]
   ExecStart=/usr/bin/aerospike-prometheus-exporter --config /etc/aerospike-prometheus-exporter/ape.toml
   [Install]
   WantedBy=multi-user.target
   
   vim /etc/systemd/system/multi-user.target.wants/aerospike-prometheus-exporter.service
   [Unit]
   Description=Aerospike Prometheus Exporter Service
   Documentation=https://github.com/aerospike/aerospike-prometheus-exporter
   Wants=network.target
   After=network-online.target
   [Service]
   ExecStart=/usr/bin/aerospike-prometheus-exporter --config /etc/aerospike-prometheus-exporter/ape.toml
   [Install]
   WantedBy=multi-user.target
   
   vim /etc/aerospike-prometheus-exporter/ape.toml
   

2. Aerospike monitoring validation.

   systemctl daemon-reaload
   systemctl start aerospike-prometheus-exporter
   systemctl status aerospike-prometheus-exporter
      
   ps aux | grep expo
   
   journalctl -u aerospike-prometheus-exporter
   /usr/bin/aerospike-prometheus-exporter --help
   
   semanage port -l | grep 9145
   systemctl enable aerospike-prometheus-exporter
   systemctl status aerospike-prometheus-exporter
   
   curl -kv http://localhost:9145/metrics