Check_AWS_EC2_instance_status

Using Amazon EC2 API, this is possible to retrieve the status of an instance without installing any agent or configuring SNMP daemon. Moreover, this requires only read-only credentials that could be easily generated using Amazon IAM. For security reasons, we use encrypted credentials that are decrypted by this plugin. Here is a command line sample of use: debian-secludit # RUBYOPT=rubygems ruby check_ec2_status.rb -v -a ec2-XXX-XXX-XXX-XXX.compute-1.amazonaws.com -i i-XXXXXXXX -f ec2_credentials_1.cfg ** Launching EC2 status retrieval on instance ID: i-XXXXXXXX on Amazon Server: $ec2.us-east-1.amazonaws.com Amazon Server: ec2.us-east-1.amazonaws.com EC2 Status Check: OK - State Name: running, State Code: 16|running=1 The ec2_credentials_1.cfg files contains the encrypted credentials as follow: [blank_space]ec2_access_id[blank_space]B64_encoding(BF-CBC-Cipher_encoding(Access Key ID) [blank_space]ec2_access_key[blank_space]B64_encoding(BF-CBC-Cipher_encoding(Secret Access Key) You can use the encrypt_credentials.rb ruby script that does that as follow: debian-secludit # RUBYOPT=rubygems ruby encrypt_credentials.rb -A XXXXXXXXXXXXXXXXXXXX -S XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX -f ec2_credentials.cfg Here is a sample configuration file for nagios. define host { name Amazon_EC2_Instance_Name use generic-host address ec2-XXX-XXX-XXX-XXX.compute-1.amazonaws.com check_command check_ec2_status!i-XXXXXXXX!/etc/nagios3/credentials/ec2_credentials_1.cfg max_check_attempts 3 }

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