Configuration
When running Predator, it is possible to retrieve and update some of the service's configuration
during runtime with the /config endpoint, please check the API reference for more details.
Below are variables Predator can be configured with.
General
| Environment Variable |
Configuration key |
Description |
Configurable from UI/API |
Default value |
| INTERNAL_ADDRESS |
internal_address |
The local ip address of your machine |
✓ |
|
| RUNNER_DOCKER_IMAGE |
runner_docker_image |
The predator-runner docker image that will run the test |
✓ |
zooz/predator-runner:$LATEST_TAGGED_VERSION |
| RUNNER_CPU |
runner_cpu |
Number of CPU use by the each runner |
✓ |
1 |
| RUNNER_MEMORY |
runner_memory |
Max memory to use by each runner |
✓ |
256 |
| DEFAULT_EMAIL_ADDRESS |
default_email_address |
Default email to send final report to, address can be configured |
✓ |
|
| ALLOW_INSECURE_TLS |
allow_insecure_tls |
If true, don't fail requests on unverified server certificate errors |
✓ |
false |
| DELAY_RUNNER_MS |
delay_runner_ms |
Delay the predator runner from sending http requests (ms) |
✓ |
|
| INTERVAL_CLEANUP_FINISHED_CONTAINERS_MS |
interval_cleanup_finished_containers_ms |
Interval (in ms) to search and delete finished tests containers. Value of 0 means no auto clearing enabled |
✓ |
0 |
| CUSTOM_RUNNER_DEFINITION |
custom_runner_definition |
Custom json that will be merged with the kubernetes/metronome predator runner job definition. See FAQ for usage examples. |
API |
|
| STREAMING_EXCLUDED_ATTRIBUTES |
streaming_excluded_attributes |
Attribute names to exclude from being produced in the resource to streaming platform |
API |
|
Note
RUNNER_DOCKER_IMAGE (zooz/predator-runner:$TAGGED_VERSION) should match the Predator's version running in order to be fully compatible with all features.
Database
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| DATABASE_TYPE |
Database to integrate Predator with [Postgres, MySQL, MSSQL, SQLITE] |
x |
SQLITE |
| DATABASE_NAME |
Database/Keyspace name |
x |
|
| DATABASE_ADDRESS |
Database address |
x |
|
| DATABASE_USERNAME |
Database username |
x |
|
| DATABASE_PASSWORD |
Database password |
x |
|
Additional parameters for the following chosen databases:
SQLITE
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| SQLITE_STORAGE |
SQLITE file name |
x |
predator |
Deployment
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| JOB_PLATFORM |
Type of platform using to run predator (METRONOME,KUBERNETES,DOCKER) |
x |
DOCKER |
Kubernetes
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| KUBERNETES_URL |
Kubernetes API Url |
x |
|
| KUBERNETES_TOKEN |
Kubernetes API Token |
x |
|
| KUBERNETES_NAMESPACE |
Kubernetes Namespace |
x |
|
Metronome
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| METRONOME_URL |
Metronome API Url |
x |
|
| METRONOME_TOKEN |
Metronome API Token |
x |
|
Docker
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| DOCKER_HOST |
Docker engine url (host and port number of docker engine) |
x |
|
| DOCKER_CERT_PATH |
Path to CA certificate directory |
x |
|
Streaming
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
| STREAMING_PLATFORM |
Type of platform to produce messages to |
x |
N/A |
| STREAMING_PLATFORM_HEALTH_CHECK_TIMEOUT_MS |
Health check timeout to streaming platform |
x |
2000 |
Kafka
Applicable when STREAMING_PLATFORM = Kafka
| Environment Variable |
Description |
Configurable from UI/API |
Default value |
Required |
| KAFKA_CLIENT_ID |
Id of kafka client |
x |
N/A |
x |
| KAFKA_BROKERS |
String list of kafka brokers, split by ',' delimiter |
x |
N/A |
✓ |
| KAFKA_TOPIC |
Topic name |
x |
N/A |
✓ |
| KAFKA_ALLOW_AUTO_TOPIC_CREATION |
Enable kafka client to auto create topic if it does not exist |
x |
false |
x |
| KAFKA_ADMIN_RETRIES |
Admin client retries |
x |
2 |
x |
Benchmarks
| Environment Variable |
Configuration key |
Description |
Configurable from UI/API |
Default value |
| BENCHMARK_THRESHOLD |
benchmark_threshold |
Minimum acceptable score of tests, if a score is less than this value, a webhook will be sent to the threshold webhook url |
✓ |
|
|
benchmark_weights.percentile_ninety_five.percentage |
Percentage of the score affected by p95 results |
✓ |
20 |
|
benchmark_weights.percentile_fifty.percentage |
Percentage of the score affected by median results |
✓ |
20 |
|
benchmark_weights.server_errors_ratio.percentage |
Percentage of the score affected by server errors ratio |
✓ |
20 |
|
benchmark_weights.client_errors_ratio.percentage |
Percentage of the score affected by client errors ratio |
✓ |
20 |
|
benchmark_weights.rps.percentage |
Percentage of the score affected by requests per second results |
✓ |
20 |
Metrics
| PROCESS.ENV Variable |
Configuration key |
Description |
Configurable from UI/API |
Default value |
| METRICS_PLUGIN_NAME |
metrics_plugin_name |
Metrics integration to use [prometheus,influx] |
✓ |
|
Prometheus
| Environment Variable |
Configuration key |
Description |
Configurable from UI/API |
Default value |
|
prometheus_metrics.push_gateway_url |
Url of push gateway |
✓ |
|
|
prometheus_metrics.buckets_sizes |
Bucket sizes to configure prometheus |
✓ |
|
|
prometheus_metrics.labels |
Labels will be passed to the push gateway |
✓ |
|
InfluxDB
| Environment Variable |
Configuration key |
Description |
Configurable from UI/API |
Default value |
|
influx_metrics.host |
Influx db host |
✓ |
|
|
influx_metrics.username |
Influx db username |
✓ |
|
|
influx_metrics.password |
Influx db password |
✓ |
|
|
influx_metrics.database |
Influx db name |
✓ |
|
SMTP Server
| Environment Variable |
Configuration key |
Description |
Configurable from UI/API |
Default value |
| SMTP_FROM |
smtp_server.from |
the 'from' email address that will be used to send emails |
✓ |
|
| SMTP_HOST |
smtp_server.host |
SMTP host |
✓ |
|
| SMTP_PORT |
smtp_server.port |
SMTP port number |
✓ |
|
| SMTP_USERNAME |
smtp_server.username |
SMTP username |
✓ |
|
| SMTP_PASSWORD |
smtp_server.password |
SMTP password |
✓ |
|
| SMTP_TIMEOUT |
smtp_server.timeout |
How many milliseconds to wait for the connection to establish to SMTP server |
✓ |
200 |
| SMTP_SECURE |
smtp_server.secure |
if true the connection will use TLS when connecting to server. Nodemailer SMTP options |
✓ |
false |
| SMTP_REJECT_UNAUTH_CERTS |
smtp_server.rejectUnauthCerts |
should fail or succeed on unauthorized certificate |
✓ |
false |