This commit:
- Leverages distribution flag in the config set by the user to skip
things not supported on OpenShift to be able to run scenarios on
Kubernetes.
- Adds sample config and scenario files that work on Kubernetes.
* Added new scenario to fill up a given volumen
* fixing small issues and style
* adding PVC as input param instead of pod name
* small fix
* get container name and volumen name
replace oc with kubectl commands
* adding yaml file to create a pv, pvc and pod to run pvc_scenario
* adding support to match both string for describe command when looking for pod_name
* added support to find the pvc from a given pod
* small fix
* small fix
This commit enables users to start Kraken to act as listener by setting
the signal to PAUSE in the config to get the cluster to a desired test or
run any setup before injecting chaos by setting the signal to RUN. This
helps in cases where we have test cases that need to coordinate the chaos
at a desired time depending on the state of the cluster/test run.
This commit enables users to simulate a downtime of an application
by blocking the traffic for the specified duration to see how
it/other components communicating with it behave in case of downtime.
This will avoid querying all namespaces for pods matching the label_selector
if defined as shown in the sample scenario config. This commit also prints a
pointer to the report generated at the end of the run.
- This eases the usage and debuggability by running the fault injection pods in
the same namespace as other resources of litmus. This will also ease the
deletion process and ensure that there are no leftover objects on the cluster.
- This commit also enables users to use the same rbac template for all the litmus
scenarios without having to pull in a specic one for each of the scenarios.
This commit adds support to create zone outage in AWS by denying both
ingress and egress traffic to the instances belonging to a particular
subnet belonging to the zone by tweaking the network acl. This creates
an outage of all the nodes in the zone - both master and workers.
Current Kraken integration with Cerberus monitors the cluster as well as the
application health post chaos and pass/fails if they are not healthy after chaos.
This commit adds ability to monitor the user application health during the chaos
and fails the run in case of downtime as it's potentially a downtime in case of
customers environment as well. It is especially useful in case of control plane
failure scenarios including API server, Etcd, Ingress etc.
This commit:
- Adds timeout to avoid operations hanging for long durations.
- Improves exception handling and exits wherever needed.
- Sets KUBECONFIG env var globoally to access the cluster.
This commit enables alerting in Kraken based on the Prometheus queries defined
by the user and modifies the return code of the run to determine pass/fail for
the run.
This commit:
- Enables Kraken to leverage kube-burner to scrape metrics from
Prometheus and index them into Elasticsearch. This way we can
take a look at the metrics in Grafana long term even after the
cluster is terminated.
- Enables separation of operations based on distribution with
OpenShift as the default option. One of the use cases is to
capture Prometheus instance details as it's installed by default
while it's optional for Kubernetes.
This commit:
- Refactors the code base to be more modular by moving functions
into respective modules to make it lean and reusable.
- Uses black to reformat the code to follow PEP 8 practices.
This commit:
- Adds a pointer to a new blog which emphasizes the importance
of making chaos part of Perf/Scale test runs.
- Bumps up the allowed max-line-length for the linters.
This commit enables performance monitoring on the cluster when
running Kraken to be able to observe how cluster reacts to failures
as it's important to make sure the cluster is healthy in terms of
both recovery as well as performance.
Signed-off-by: arcprabh <arcprabh@in.ibm.com>
Incorporated first round of review comments
Signed-off-by: arcprabh <arcprabh@in.ibm.com>
Resolve multiple node name issue for single ip
Signed-off-by: arcprabh <arcprabh@in.ibm.com>
The current implementation just reports the pass/fail when
running the pod scenarios. This commit prints the pod scenarios logs
to stdout to give users the ability to understand the actions run by
powerfulseal under the hood - number of pods matching the filter,
pods picked for killing, post checks etc. This also helps in
debugging when the scenarios fail.
With the current implementation, all the scenarios of specific type
(for example, pod scenario) has to be executed together. All
pod_scenarios are followed by node_scenarios and so on.
(pod_scenarios -> node_scenarios -> pod_scenarios is not possible)
This commit enables the user to run a specific type of scenario
multiple times. For example, few pod_scenarios followed by
node_scenarios followed by few_scenarios.
This commit:
- Adds a node scenario to stop and start an instance
- Adds a node scenario to terminate an instance
- Adds a node scenario to reboot an instance
- Adds a node scenario to stop the kubelet
- Adds a node scenario to crash the node
This commit adds python linters as it improves the code quality.
Travis CI is enabled to run linters on each PR to make sure it
follows the best practices and doesn't break the tool.
Janos Bonic
Naga Ravi Chaitanya Elluri
Sanja Bonic
Adolfo Aguirrezabal
Paige Rubendall
yogananth-subramanian
Alejandro Gullón
Paige Rubendall
Amit Sagtani
Pravin Dsilva
arcprabh
Mike Fiedler
Yashashree1997
Yashashree Suresh