AWS - boto3 - boto3.client('cloudwatch') CloudWatch

• Amazon CloudWatch boto3.client('cloudwatch')
  • example
    • AWS CloudWatch Log Group Retention to 60

---

Amazon CloudWatch boto3.client('cloudwatch')

cloudwatch = boto3.client('cloudwatch')

cloudwatch.get_paginator()  # paginator
for response in paginator.paginate(StateValue='INSUFFICIENT_DATA'):
    response['MetricAlarms']

cloudwatch.put_metric_alarm()
cloudwatch.delete_alarms()

# -------------------------- Creating alarms in Amazon CloudWatch --------------------------
cloudwatch = boto3.client('cloudwatch')


# -------------------------- List alarms of insufficient data through the pagination interface --------------------------
# -------------------------- cloudwatch.get_paginator('describe_alarms')
paginator = cloudwatch.get_paginator('describe_alarms')
for response in paginator.paginate(StateValue='INSUFFICIENT_DATA'):
    print(response['MetricAlarms'])


# -------------------------- Create/update alarm for a CloudWatch Metric alarm --------------------------
# -------------------------- put_metric_alarm.
# creates an alarm:
# the alarm state is immediately set to INSUFFICIENT_DATA.
# The alarm is evaluated and its state is set appropriately.
# Any actions associated with the state are then executed.
# update an existing alarm
# its state is left unchanged, but the update completely overwrites the previous configuration of the alarm.
cloudwatch.put_metric_alarm(
    AlarmName='Web_Server_CPU_Utilization',
    ComparisonOperator='GreaterThanThreshold',
    EvaluationPeriods=1,
    MetricName='CPUUtilization',
    Namespace='AWS/EC2',
    Period=60,
    Statistic='Average',
    Threshold=70.0,
    ActionsEnabled=False,
    AlarmDescription='Alarm when server CPU exceeds 70%',
    Dimensions=[
        {
          'Name': 'InstanceId',
          'Value': 'INSTANCE_ID'
        },
    ],
    Unit='Seconds'
)


# -------------------------- Delete an alarm --------------------------
cloudwatch.delete_alarms(
  AlarmNames=['Web_Server_CPU_Utilization'],
)

---

example

AWS CloudWatch Log Group Retention to 60

pleaze go to the follow link for the original code ref: AWS CloudWatch Log Group Retention to 60

CloudWatch organises logs in a log group and when a new log group is created, it’s retention period is set to Never expire by default (be retained forever)

to changing the retention days to 60

import boto3

# set the number of retention days
retention_days = 60

# list the regions you are interested to run this script on
regions=['us-east-1']

for region in regions:
    logclient = boto3.client('logs',region)
    response = logclient.describe_log_groups()
    nextToken = response.get('nextToken', None)
    retention = response['logGroups']

    while (nextToken is not None):
        response = logclient.describe_log_groups(nextToken=nextToken)
        nextToken = response.get('nextToken', None)
        retention = retention + response['logGroups']

    for group in retention:
        if 'retentionInDays' in group.keys():
            print(group['logGroupName'], group['retentionInDays'],region)
        else:
            print("Retention Not found for ",group['logGroupName'],region)
            setretention = logclient.put_retention_policy(
                logGroupName = group['logGroupName'],
                retentionInDays = retention_days
                )
            print(setretention)

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