Service hijacking scenario (#617)

* WIP: service hijacking scenario

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* wip

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* error handling

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

adapted run_raken.py

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* restored config.yaml

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* added funtest

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

test fix

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fix

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fixed test

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fix

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fix test

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fixed funtest

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

funtest fix

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

minor nit

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

added explicit curl method

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

push

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fix

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

restored all funtests

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

added mime type test

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fixed pipeline

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

commented unit

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

utf-8

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

test restored

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

fix test pipeline

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* documentation

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* krkn-lib 2.1.3

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

* added other funtests to main merge to collect coverage

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

---------

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>
This commit is contained in:
Tullio Sebastiani
2024-05-13 10:04:06 +02:00
committed by GitHub
parent 2610a7af67
commit a142f6e7a4
12 changed files with 388 additions and 4 deletions

View File

@@ -61,6 +61,8 @@ jobs:
kubectl create namespace namespace-scenario
kubectl apply -f CI/templates/time_pod.yaml
kubectl wait --for=condition=ready pod -l scenario=time-skew --timeout=300s
kubectl apply -f CI/templates/service_hijacking.yaml
kubectl wait --for=condition=ready pod -l "app.kubernetes.io/name=proxy" --timeout=300s
- name: Get Kind nodes
run: |
kubectl get nodes --show-labels=true
@@ -70,12 +72,14 @@ jobs:
run: python -m coverage run -a -m unittest discover -s tests -v
- name: Setup Pull Request Functional Tests
if: github.event_name == 'pull_request'
if: |
github.event_name == 'pull_request'
run: |
yq -i '.kraken.port="8081"' CI/config/common_test_config.yaml
yq -i '.kraken.signal_address="0.0.0.0"' CI/config/common_test_config.yaml
yq -i '.kraken.performance_monitoring="localhost:9090"' CI/config/common_test_config.yaml
echo "test_app_outages" > ./CI/tests/functional_tests
echo "test_service_hijacking" > ./CI/tests/functional_tests
echo "test_app_outages" >> ./CI/tests/functional_tests
echo "test_container" >> ./CI/tests/functional_tests
echo "test_namespace" >> ./CI/tests/functional_tests
echo "test_net_chaos" >> ./CI/tests/functional_tests
@@ -84,7 +88,9 @@ jobs:
echo "test_arca_memory_hog" >> ./CI/tests/functional_tests
echo "test_arca_io_hog" >> ./CI/tests/functional_tests
# Push on main only steps
# Push on main only steps + all other functional to collect coverage
# for the badge
- name: Configure AWS Credentials
if: github.ref == 'refs/heads/main' && github.event_name == 'push'
uses: aws-actions/configure-aws-credentials@v4
@@ -101,6 +107,15 @@ jobs:
yq -i '.telemetry.username="${{secrets.TELEMETRY_USERNAME}}"' CI/config/common_test_config.yaml
yq -i '.telemetry.password="${{secrets.TELEMETRY_PASSWORD}}"' CI/config/common_test_config.yaml
echo "test_telemetry" > ./CI/tests/functional_tests
echo "test_service_hijacking" >> ./CI/tests/functional_tests
echo "test_app_outages" >> ./CI/tests/functional_tests
echo "test_container" >> ./CI/tests/functional_tests
echo "test_namespace" >> ./CI/tests/functional_tests
echo "test_net_chaos" >> ./CI/tests/functional_tests
echo "test_time" >> ./CI/tests/functional_tests
echo "test_arca_cpu_hog" >> ./CI/tests/functional_tests
echo "test_arca_memory_hog" >> ./CI/tests/functional_tests
echo "test_arca_io_hog" >> ./CI/tests/functional_tests
# Final common steps
- name: Run Functional tests

View File

@@ -0,0 +1,29 @@
apiVersion: v1
kind: Pod
metadata:
name: nginx
labels:
app.kubernetes.io/name: proxy
spec:
containers:
- name: nginx
image: nginx:stable
ports:
- containerPort: 80
name: http-web-svc
---
apiVersion: v1
kind: Service
metadata:
name: nginx-service
spec:
selector:
app.kubernetes.io/name: proxy
type: NodePort
ports:
- name: name-of-service-port
protocol: TCP
port: 80
targetPort: http-web-svc
nodePort: 30036

View File

@@ -0,0 +1,107 @@
set -xeEo pipefail
source CI/tests/common.sh
trap error ERR
trap finish EXIT
# port mapping has been configured in kind-config.yml
SERVICE_URL=http://localhost:8888
PAYLOAD_GET_1="{ \
\"status\":\"internal server error\" \
}"
STATUS_CODE_GET_1=500
PAYLOAD_PATCH_1="resource patched"
STATUS_CODE_PATCH_1=201
PAYLOAD_POST_1="{ \
\"status\": \"unauthorized\" \
}"
STATUS_CODE_POST_1=401
PAYLOAD_GET_2="{ \
\"status\":\"resource created\" \
}"
STATUS_CODE_GET_2=201
PAYLOAD_PATCH_2="bad request"
STATUS_CODE_PATCH_2=400
PAYLOAD_POST_2="not found"
STATUS_CODE_POST_2=404
JSON_MIME="application/json"
TEXT_MIME="text/plain; charset=utf-8"
function functional_test_service_hijacking {
export scenario_type="service_hijacking"
export scenario_file="scenarios/kube/service_hijacking.yaml"
export post_config=""
envsubst < CI/config/common_test_config.yaml > CI/config/service_hijacking.yaml
python3 -m coverage run -a run_kraken.py -c CI/config/service_hijacking.yaml > /dev/null 2>&1 &
PID=$!
#Waiting the hijacking to have effect
while [ `curl -X GET -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/list/index.php` == 404 ]; do echo "waiting scenario to kick in."; sleep 1; done;
#Checking Step 1 GET on /list/index.php
OUT_GET="`curl -X GET -s $SERVICE_URL/list/index.php`"
OUT_CONTENT=`curl -X GET -s -o /dev/null -I -w "%{content_type}" $SERVICE_URL/list/index.php`
OUT_STATUS_CODE=`curl -X GET -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/list/index.php`
[ "${PAYLOAD_GET_1//[$'\t\r\n ']}" == "${OUT_GET//[$'\t\r\n ']}" ] && echo "Step 1 GET Payload OK" || (echo "Payload did not match. Test failed." && exit 1)
[ "$OUT_STATUS_CODE" == "$STATUS_CODE_GET_1" ] && echo "Step 1 GET Status Code OK" || (echo " Step 1 GET status code did not match. Test failed." && exit 1)
[ "$OUT_CONTENT" == "$JSON_MIME" ] && echo "Step 1 GET MIME OK" || (echo " Step 1 GET MIME did not match. Test failed." && exit 1)
#Checking Step 1 POST on /list/index.php
OUT_POST="`curl -s -X POST $SERVICE_URL/list/index.php`"
OUT_STATUS_CODE=`curl -X POST -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/list/index.php`
OUT_CONTENT=`curl -X POST -s -o /dev/null -I -w "%{content_type}" $SERVICE_URL/list/index.php`
[ "${PAYLOAD_POST_1//[$'\t\r\n ']}" == "${OUT_POST//[$'\t\r\n ']}" ] && echo "Step 1 POST Payload OK" || (echo "Payload did not match. Test failed." && exit 1)
[ "$OUT_STATUS_CODE" == "$STATUS_CODE_POST_1" ] && echo "Step 1 POST Status Code OK" || (echo "Step 1 POST status code did not match. Test failed." && exit 1)
[ "$OUT_CONTENT" == "$JSON_MIME" ] && echo "Step 1 POST MIME OK" || (echo " Step 1 POST MIME did not match. Test failed." && exit 1)
#Checking Step 1 PATCH on /patch
OUT_PATCH="`curl -s -X PATCH $SERVICE_URL/patch`"
OUT_STATUS_CODE=`curl -X PATCH -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/patch`
OUT_CONTENT=`curl -X PATCH -s -o /dev/null -I -w "%{content_type}" $SERVICE_URL/patch`
[ "${PAYLOAD_PATCH_1//[$'\t\r\n ']}" == "${OUT_PATCH//[$'\t\r\n ']}" ] && echo "Step 1 PATCH Payload OK" || (echo "Payload did not match. Test failed." && exit 1)
[ "$OUT_STATUS_CODE" == "$STATUS_CODE_PATCH_1" ] && echo "Step 1 PATCH Status Code OK" || (echo "Step 1 PATCH status code did not match. Test failed." && exit 1)
[ "$OUT_CONTENT" == "$TEXT_MIME" ] && echo "Step 1 PATCH MIME OK" || (echo " Step 1 PATCH MIME did not match. Test failed." && exit 1)
# wait for the next step
sleep 16
#Checking Step 2 GET on /list/index.php
OUT_GET="`curl -X GET -s $SERVICE_URL/list/index.php`"
OUT_CONTENT=`curl -X GET -s -o /dev/null -I -w "%{content_type}" $SERVICE_URL/list/index.php`
OUT_STATUS_CODE=`curl -X GET -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/list/index.php`
[ "${PAYLOAD_GET_2//[$'\t\r\n ']}" == "${OUT_GET//[$'\t\r\n ']}" ] && echo "Step 2 GET Payload OK" || (echo "Step 2 GET Payload did not match. Test failed." && exit 1)
[ "$OUT_STATUS_CODE" == "$STATUS_CODE_GET_2" ] && echo "Step 2 GET Status Code OK" || (echo "Step 2 GET status code did not match. Test failed." && exit 1)
[ "$OUT_CONTENT" == "$JSON_MIME" ] && echo "Step 2 GET MIME OK" || (echo " Step 2 GET MIME did not match. Test failed." && exit 1)
#Checking Step 2 POST on /list/index.php
OUT_POST="`curl -s -X POST $SERVICE_URL/list/index.php`"
OUT_CONTENT=`curl -X POST -s -o /dev/null -I -w "%{content_type}" $SERVICE_URL/list/index.php`
OUT_STATUS_CODE=`curl -X POST -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/list/index.php`
[ "${PAYLOAD_POST_2//[$'\t\r\n ']}" == "${OUT_POST//[$'\t\r\n ']}" ] && echo "Step 2 POST Payload OK" || (echo "Step 2 POST Payload did not match. Test failed." && exit 1)
[ "$OUT_STATUS_CODE" == "$STATUS_CODE_POST_2" ] && echo "Step 2 POST Status Code OK" || (echo "Step 2 POST status code did not match. Test failed." && exit 1)
[ "$OUT_CONTENT" == "$TEXT_MIME" ] && echo "Step 2 POST MIME OK" || (echo " Step 2 POST MIME did not match. Test failed." && exit 1)
#Checking Step 2 PATCH on /patch
OUT_PATCH="`curl -s -X PATCH $SERVICE_URL/patch`"
OUT_CONTENT=`curl -X PATCH -s -o /dev/null -I -w "%{content_type}" $SERVICE_URL/patch`
OUT_STATUS_CODE=`curl -X PATCH -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL/patch`
[ "${PAYLOAD_PATCH_2//[$'\t\r\n ']}" == "${OUT_PATCH//[$'\t\r\n ']}" ] && echo "Step 2 PATCH Payload OK" || (echo "Step 2 PATCH Payload did not match. Test failed." && exit 1)
[ "$OUT_STATUS_CODE" == "$STATUS_CODE_PATCH_2" ] && echo "Step 2 PATCH Status Code OK" || (echo "Step 2 PATCH status code did not match. Test failed." && exit 1)
[ "$OUT_CONTENT" == "$TEXT_MIME" ] && echo "Step 2 PATCH MIME OK" || (echo " Step 2 PATCH MIME did not match. Test failed." && exit 1)
wait $PID
# now checking if service has been restore correctly and nginx responds correctly
curl -s $SERVICE_URL | grep nginx! && echo "BODY: Service restored!" || (echo "BODY: failed to restore service" && exit 1)
OUT_STATUS_CODE=`curl -X GET -s -o /dev/null -I -w "%{http_code}" $SERVICE_URL`
[ "$OUT_STATUS_CODE" == "200" ] && echo "STATUS_CODE: Service restored!" || (echo "STATUS_CODE: failed to restore service" && exit 1)
echo "Service Hijacking Chaos test: Success"
}
functional_test_service_hijacking

View File

@@ -75,6 +75,7 @@ Scenario type | Kubernetes
[PVC scenario](docs/pvc_scenario.md) | :heavy_check_mark: |
[Network_Chaos](docs/network_chaos.md) | :heavy_check_mark: |
[ManagedCluster Scenarios](docs/managedcluster_scenarios.md) | :heavy_check_mark: |
[Service Hijacking Scenarios](docs/service_hijacking_scenarios.md) | :heavy_check_mark: |
### Kraken scenario pass/fail criteria and report

View File

@@ -42,6 +42,8 @@ kraken:
- scenarios/openshift/pvc_scenario.yaml
- network_chaos:
- scenarios/openshift/network_chaos.yaml
- service_hijacking:
- scenarios/kube/service_hijacking.yaml
cerberus:
cerberus_enabled: False # Enable it when cerberus is previously installed

View File

@@ -0,0 +1,80 @@
### Service Hijacking Scenarios
Service Hijacking Scenarios aim to simulate fake HTTP responses from a workload targeted by a
`Service` already deployed in the cluster.
This scenario is executed by deploying a custom-made web service and modifying the target `Service`
selector to direct traffic to this web service for a specified duration.
The web service will utilize a time-based test plan loaded from the scenario configuration file,
which outlines the behavior of resources during the chaos scenario, defined as follows:
```yaml
service_target_port: http-web-svc # The port of the service to be hijacked (can be named or numeric, based on the workload and service configuration).
service_name: nginx-service # The name of the service that will be hijacked.
service_namespace: default # The namespace where the target service is located.
image: quay.io/krkn-chaos/krkn-service-hijacking:v0.1.3 # Image of the krkn web service to be deployed to receive traffic.
chaos_duration: 30 # Total duration of the chaos scenario in seconds.
plan:
- resource: "/list/index.php" # Specifies the resource or path to respond to in the scenario. For paths, both the path and query parameters are captured but ignored. For resources, only query parameters are captured.
steps: # A time-based plan consisting of steps can be defined for each resource.
GET: # One or more HTTP methods can be specified for each step. Note: Non-standard methods are supported for fully custom web services (e.g., using NONEXISTENT instead of POST).
- duration: 15 # Duration in seconds for this step before moving to the next one, if defined. Otherwise, this step will continue until the chaos scenario ends.
status: 500 # HTTP status code to be returned in this step.
mime_type: "application/json" # MIME type of the response for this step.
payload: | # The response payload for this step.
{
"status":"internal server error"
}
- duration: 15
status: 201
mime_type: "application/json"
payload: |
{
"status":"resource created"
}
POST:
- duration: 15
status: 401
mime_type: "application/json"
payload: |
{
"status": "unauthorized"
}
- duration: 15
status: 404
mime_type: "text/plain"
payload: "not found"
```
The scenario will focus on the `service_name` within the `service_namespace`,
substituting the selector with a randomly generated one, which is added as a label in the mock service manifest.
This allows multiple scenarios to be executed in the same namespace, each targeting different services without
causing conflicts.
The newly deployed mock web service will expose a `service_target_port`,
which can be either a named or numeric port based on the service configuration.
This ensures that the Service correctly routes HTTP traffic to the mock web service during the chaos run.
Each step will last for `duration` seconds from the deployment of the mock web service in the cluster.
For each HTTP resource, defined as a top-level YAML property of the plan
(it could be a specific resource, e.g., /list/index.php, or a path-based resource typical in MVC frameworks),
one or more HTTP request methods can be specified. Both standard and custom request methods are supported.
During this time frame, the web service will respond with:
- `status`: The [HTTP status code](https://datatracker.ietf.org/doc/html/rfc7231#section-6) (can be standard or custom).
- `mime_type`: The [MIME type](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types) (can be standard or custom).
- `payload`: The response body to be returned to the client.
At the end of the step `duration`, the web service will proceed to the next step (if available) until
the global `chaos_duration` concludes. At this point, the original service will be restored,
and the custom web service and its resources will be undeployed.
__NOTE__: Some clients (e.g., cURL, jQuery) may optimize queries using lightweight methods (like HEAD or OPTIONS)
to probe API behavior. If these methods are not defined in the test plan, the web service may respond with
a `405` or `404` status code. If you encounter unexpected behavior, consider this use case.

View File

@@ -2,6 +2,9 @@ kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
extraPortMappings:
- containerPort: 30036
hostPort: 8888
- role: control-plane
- role: control-plane
- role: worker

View File

View File

@@ -0,0 +1,86 @@
import logging
import time
import yaml
from krkn_lib.k8s import KrknKubernetes
from krkn_lib.models.telemetry import ScenarioTelemetry
from krkn_lib.telemetry.k8s import KrknTelemetryKubernetes
def run(scenarios_list: list[str], krkn_lib: KrknKubernetes, telemetry: KrknTelemetryKubernetes) -> (list[str], list[ScenarioTelemetry]):
scenario_telemetries= list[ScenarioTelemetry]()
failed_post_scenarios = []
for scenario in scenarios_list:
scenario_telemetry = ScenarioTelemetry()
scenario_telemetry.scenario = scenario
scenario_telemetry.start_timestamp = time.time()
telemetry.set_parameters_base64(scenario_telemetry, scenario)
with open(scenario) as stream:
scenario_config = yaml.safe_load(stream)
service_name = scenario_config['service_name']
service_namespace = scenario_config['service_namespace']
plan = scenario_config["plan"]
image = scenario_config["image"]
target_port = scenario_config["service_target_port"]
chaos_duration = scenario_config["chaos_duration"]
logging.info(f"checking service {service_name} in namespace: {service_namespace}")
if not krkn_lib.service_exists(service_name, service_namespace):
logging.error(f"service: {service_name} not found in namespace: {service_namespace}, failed to run scenario.")
fail(scenario_telemetry, scenario_telemetries)
failed_post_scenarios.append(scenario)
break
try:
logging.info(f"service: {service_name} found in namespace: {service_namespace}")
logging.info(f"creating webservice and initializing test plan...")
# both named ports and port numbers can be used
if isinstance(target_port, int):
logging.info(f"webservice will listen on port {target_port}")
webservice = krkn_lib.deploy_service_hijacking(service_namespace, plan, image, port_number=target_port)
else:
logging.info(f"traffic will be redirected to named port: {target_port}")
webservice = krkn_lib.deploy_service_hijacking(service_namespace, plan, image, port_name=target_port)
logging.info(f"successfully deployed pod: {webservice.pod_name} "
f"in namespace:{service_namespace} with selector {webservice.selector}!"
)
logging.info(f"patching service: {service_name} to hijack traffic towards: {webservice.pod_name}")
original_service = krkn_lib.replace_service_selector([webservice.selector], service_name, service_namespace)
if original_service is None:
logging.error(f"failed to patch service: {service_name}, namespace: {service_namespace} with selector {webservice.selector}")
fail(scenario_telemetry, scenario_telemetries)
failed_post_scenarios.append(scenario)
break
logging.info(f"service: {service_name} successfully patched!")
logging.info(f"original service manifest:\n\n{yaml.dump(original_service)}")
logging.info(f"waiting {chaos_duration} before restoring the service")
time.sleep(chaos_duration)
selectors = ["=".join([key, original_service["spec"]["selector"][key]]) for key in original_service["spec"]["selector"].keys()]
logging.info(f"restoring the service selectors {selectors}")
original_service = krkn_lib.replace_service_selector(selectors, service_name, service_namespace)
if original_service is None:
logging.error(f"failed to restore original service: {service_name}, namespace: {service_namespace} with selectors: {selectors}")
fail(scenario_telemetry, scenario_telemetries)
failed_post_scenarios.append(scenario)
break
logging.info("selectors successfully restored")
logging.info("undeploying service-hijacking resources...")
krkn_lib.undeploy_service_hijacking(webservice)
scenario_telemetry.exit_status = 0
scenario_telemetry.end_timestamp = time.time()
scenario_telemetries.append(scenario_telemetry)
logging.info("success")
except Exception as e:
logging.error(f"scenario {scenario} failed with exception: {e}")
fail(scenario_telemetry, scenario_telemetries)
failed_post_scenarios.append(scenario)
return failed_post_scenarios, scenario_telemetries
def fail(scenario_telemetry: ScenarioTelemetry, scenario_telemetries: list[ScenarioTelemetry]):
scenario_telemetry.exit_status = 1
scenario_telemetry.end_timestamp = time.time()
scenario_telemetries.append(scenario_telemetry)

View File

@@ -15,7 +15,7 @@ google-api-python-client==2.116.0
ibm_cloud_sdk_core==3.18.0
ibm_vpc==0.20.0
jinja2==3.1.4
krkn-lib==2.1.2
krkn-lib==2.1.3
lxml==5.1.0
kubernetes==26.1.0
oauth2client==4.1.3

View File

@@ -25,6 +25,7 @@ import kraken.pvc.pvc_scenario as pvc_scenario
import kraken.network_chaos.actions as network_chaos
import kraken.arcaflow_plugin as arcaflow_plugin
import kraken.prometheus as prometheus_plugin
import kraken.service_hijacking.service_hijacking as service_hijacking_plugin
import server as server
from kraken import plugins
from krkn_lib.k8s import KrknKubernetes
@@ -348,6 +349,10 @@ def main(cfg):
elif scenario_type == "network_chaos":
logging.info("Running Network Chaos")
failed_post_scenarios, scenario_telemetries = network_chaos.run(scenarios_list, config, wait_duration, kubecli, telemetry_k8s)
elif scenario_type == "service_hijacking":
logging.info("Running Service Hijacking Chaos")
failed_post_scenarios, scenario_telemetries = service_hijacking_plugin.run(scenarios_list, kubecli, telemetry_k8s)
chaos_telemetry.scenarios.extend(scenario_telemetries)
# Check for critical alerts when enabled
post_critical_alerts = 0

View File

@@ -0,0 +1,56 @@
# refer to the documentation for further infos https://github.com/krkn-chaos/krkn/blob/main/docs/service_hijacking.md
service_target_port: http-web-svc # The port of the service to be hijacked (can be named or numeric, based on the workload and service configuration).
service_name: nginx-service # name of the service to be hijacked
service_namespace: default # The namespace where the target service is located
image: quay.io/krkn-chaos/krkn-service-hijacking:v0.1.3 # Image of the krkn web service to be deployed to receive traffic.
chaos_duration: 30 # Total duration of the chaos scenario in seconds.
plan:
- resource: "/list/index.php" # Specifies the resource or path to respond to in the scenario. For paths, both the path and query parameters are captured but ignored.
# For resources, only query parameters are captured.
steps: # A time-based plan consisting of steps can be defined for each resource.
GET: # One or more HTTP methods can be specified for each step.
# Note: Non-standard methods are supported
# for fully custom web services (e.g., using NONEXISTENT instead of POST).
- duration: 15 # Duration in seconds for this step before moving to the next one, if defined. Otherwise,
# this step will continue until the chaos scenario ends.
status: 500 # HTTP status code to be returned in this step.
mime_type: "application/json" # MIME type of the response for this step.
payload: | # The response payload for this step.
{
"status":"internal server error"
}
- duration: 15
status: 201
mime_type: "application/json"
payload: |
{
"status":"resource created"
}
POST:
- duration: 15
status: 401
mime_type: "application/json"
payload: |
{
"status": "unauthorized"
}
- duration: 15
status: 404
mime_type: "text/plain"
payload: "not found"
- resource: "/patch"
steps:
PATCH:
- duration: 15
status: 201
mime_type: "text/plain"
payload: "resource patched"
- duration: 15
status: 400
mime_type: "text/plain"
payload: "bad request"