mackerel-null-bridge
A command line tool for filling missing metric values on Mackerel.
Description
When sending error metrics, etc., you may be forced to send them intermittently. When monitoring such intermittent metrics in Mackerel, alerts may not close automatically. This tool is designed to be run periodically, so it will fetch the values of the specified metrics not more than 15 minutes apart and interpolate the missing values. As a result, it expects to close alerts automatically, even for intermittent metrics.
Note: As of v0.0.0, only service metrics are still supported. This is because I can't think of any case where intermittent values are sent in the host metric.
Install
binary packages
Homebrew tap
$ brew install mashiike/tap/mackerel-null-bridge
Usage
as CLI command
$mackerel-null-bridge
NAME:
mackerel-null-bridge - A command line tool for filling missing metric values on Mackerel.
USAGE:
mackerel-null-bridge --config
--apikey
VERSION:
0.0.0
COMMANDS:
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--apikey value, -k value for access mackerel API (default: *********) [$MACKEREL_APIKEY]
--config value, -c value config file path, can set multiple [$CONFIG_FILE]
--deploy deploy flag (cli only) (default: false)
--dry-run dry-run flag (lambda only) (default: false) [$DRY_RUN]
--log-level value output log level (default: info) [$LOG_LEVEL]
--help, -h show help (default: false)
--version, -v print the version (default: false)
as AWS Lambda function
mackerel-null-bridge binary also runs as AWS Lambda function. mackerel-null-bridge implicitly behaves as a run command when run as a bootstrap with a Lambda Function
CLI options can be specified from environment variables. For example, when MACKEREL_APIKEY environment variable is set, the value is set to -apikey option.
Example Lambda functions configuration.
{
"FunctionName": "mackerel-null-bridge",
"Environment": {
"Variables": {
"CONFIG_FILE": "config.yaml",
"MACKEREL_APIKEY": "
"
}
},
"Handler": "bootstrap",
"MemorySize": 128,
"Role": "arn:aws:iam::0123456789012:role/lambda-function",
"Runtime": "provided.al2",
"Timeout": 300
}
Configuration file
YAML format.
required_version: ">=0.0.0"
targets:
- service: prod
metric_name: hoge.fuga.piyo
value: 0.0
delay_seconds: 300
Special Thanks
@handlename gave me the idea to name this tool.
LICENSE
MIT
