Extended host name field support

[syquus]

Added support for Collecting metrics of EC2 hosts without the limitation of having i-012345678 in HOST.HOST

In all our infrastructures, HOST indicates the hostname of the servers, not a particular field such as the "AWS instance id". Adapt existing infrastructures to this limitation doesn't make sense. The suggested PR consists on an OPTIONAL argument -H that indicates the value of HOST.HOST. If it exists, the zabbix_send method will send collected metrics to THAT HOST, no to IDENTITY (i-0123456789...)

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Change Proposition for the Wiki:

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This is Amazon CloudWatch metrics monitoring templates.

Requirements

Operation has been confirmed under the following environments.

• CentOS7.2 or Amazon Linux 2016.3
• Python 2.7
• boto3(AWS SDK for Python)
• Zabbix 2.2 or 3.0

Architecture

How to use

Only 3 steps.

1. Download and set a python script
2. Import template
3. Register hosts

Download and set a python script

Please download scripts/cloudwatch_zabbix.py on your Zabbix Server (External Scripts directory).
And please set exec permission to Zabbix Server user(default: zabbix).

Import template

Please import templates/3.0/cloudwatch_template.xml at Zabbix WebGUI ([Configuration]->[Templates]->Import).
(In case of Zabbix 2.2: templates/2.2/cloudwatch_template.xml)

If you want to monitor the billing data, please import awsbilling_template.xml.

Register hosts

Please register Zabbix hosts for EC2 instances, RDS instances, ELB, EBS volume or others.

In case of an EC2 instance:

• Host name: i-xxxxx (please set Instance ID) OR the desired Zabbix host name (please use arguments -i {$INSTANCE_ID} and -H {HOST.HOST} in this case)
• Templates: Template AWS EC2
• Macros:
  • {$REGION} : set AWS region name(e.g. ap-northeast-1)
  • {$KEY} : set AWS Access Key ID (e.g. AKI........)
  • {$SECRET} : set AWS Secret Access Key
  • {$INSTANCE_ID} : (optional) set Instance ID if HOST.HOST doesn't include it. (e.g. i-1234567890abcdef0)

In case of Billing data:

• Host name: any
• Templates: Template AWS Billing
• Macros:
  • {$REGION} : set AWS region name to us-east-1
  • {$KEY} : set AWS Access Key ID
  • {$SECRET} : set AWS Secret Access Key

Tip

If you don't want to set AWS credentials info at Zabbix Macro, please set OS environment variables.

• AWS_DEFAULT_REGION
• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY

And, please change external check items key.

before:

cloudwatch_zabbix.py[ec2,"-r",{$REGION},"-a",{$KEY},"-s",{$SECRET},"-i",{$INSTANCE_ID},"-H",{HOST.HOST},"-m","True"]

after:

cloudwatch_zabbix.py[ec2,"-i",{HOST.HOST},"-m","True"]

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