AWS Cloudwatch

README.md

AWS Cloudwatch Agent

1. Install
2. Create a role and add CloudwatchFullAccess to it
3. Assign to the EC2 Instance
4. Edit configs and add the template above
5. Change Namespace
6. Pull configs
7. Start
8. See status

AWS Cloudwatch Alarm

1. Create Alarm (For CPU Just create a expression (1-cpu_idle) as cpu_util)
2. Attach action
3. Give neccesary permissions

Principal: lambda.alarms.cloudwatch.amazonaws.com
Permission: lambda:InvokeFuncion
ARN: The alarm ARN

full-config.json

{
   "agent": {
      "metrics_collection_interval": 5,
      "logfile": "/opt/aws/amazon-cloudwatch-agent/logs/amazon-cloudwatch-agent.log"
   },
   "metrics": {
      "namespace": "Monitoring Test",
      "append_dimensions": {
         "InstanceId": "${aws:InstanceId}",
         "InstanceName": "${aws:Tag:Name}"
      },
      "metrics_collected": {
         "cpu": {
            "measurement": [
               "cpu_time_active",
               "cpu_time_guest",
               "cpu_time_guest_nice",
               "cpu_time_idle",
               "cpu_time_iowait",
               "cpu_time_irq",
               "cpu_time_nice",
               "cpu_time_softirq",
               "cpu_time_steal",
               "cpu_time_system",
               "cpu_time_user",
               "cpu_usage_active",
               "cpu_usage_guest",
               "cpu_usage_guest_nice",
               "cpu_usage_idle",
               "cpu_usage_iowait",
               "cpu_usage_irq",
               "cpu_usage_nice",
               "cpu_usage_softirq",
               "cpu_usage_steal",
               "cpu_usage_system",
               "cpu_usage_user"
            ],
            "totalcpu": true
         },
         "mem": {
            "measurement": [
               "mem_used_percent",
               "mem_available_percent",
               "mem_total",
               "mem_used",
               "mem_free",
               "mem_cached",
               "mem_active",
               "mem_inactive"
            ]
         },
         "disk": {
            "measurement": [
               "disk_used_percent",
               "disk_free",
               "disk_used",
               "disk_total"
            ],
             "resources": [
               "/"
            ]
         },
         "swap": {
            "measurement": [
               "swap_used_percent",
               "swap_free",
               "swap_used"
            ]
         },
         "processes": {
            "measurement": [
               "processes_running",
               "processes_blocked"
            ]
         },
         "diskio": {
            "measurement": [
               "io_time"
            ]
         }
      },
      "force_flush_interval": 5
   }
}

help.sh

# Configuring Files
sudo nano /opt/aws/amazon-cloudwatch-agent/bin/config.json

#Stopping
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a stop

#Pulling Configs and Start
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl \
  -a fetch-config \
  -m ec2 \
  -c file:/opt/aws/amazon-cloudwatch-agent/bin/config.json \
  -s

# Restarting
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a stop && sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a start -c file:/opt/aws/amazon-cloudwatch-agent/bin/config.json

#Check Status
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a status

#Logs
cat /opt/aws/amazon-cloudwatch-agent/logs/amazon-cloudwatch-agent.log