kbcli fault network bandwidth
Limit the bandwidth that pods use to communicate with other objects.
kbcli fault network bandwidth [flags]
Examples
# Isolate all pods network under the default namespace from the outside world, including the k8s internal network.
kbcli fault network partition
# The specified pod is isolated from the k8s external network "kubeblocks.io".
kbcli fault network partition mycluster-mysql-1 --external-targets=kubeblocks.io
# Isolate the network between two pods.
kbcli fault network partition mycluster-mysql-1 --target-label=statefulset.kubernetes.io/pod-name=mycluster-mysql-2
// Like the partition command, the target can be specified through --target-label or --external-targets. The pod only has obstacles in communicating with this target. If the target is not specified, all communication will be blocked.
# Block all pod communication under the default namespace, resulting in a 50% packet loss rate.
kbcli fault network loss --loss=50
# Block the specified pod communication, so that the packet loss rate is 50%.
kbcli fault network loss mysql-cluster-mysql-2 --loss=50
kbcli fault network corrupt --corrupt=50
# Blocks specified pod communication with a 50% packet corruption rate.
kbcli fault network corrupt mysql-cluster-mysql-2 --corrupt=50
kbcli fault network duplicate --duplicate=50
# Block specified pod communication so that the packet repetition rate is 50%.
kbcli fault network duplicate mysql-cluster-mysql-2 --duplicate=50
kbcli fault network delay --latency=10s
# Block the communication of the specified pod, causing its network delay for 10s.
kbcli fault network delay mysql-cluster-mysql-2 --latency=10s
# Limit the communication bandwidth between mysql-cluster-mysql-2 and the outside.
kbcli fault network bandwidth mysql-cluster-mysql-2 --rate=1kbps --duration=1m
Options
--annotation stringToString Select the pod to inject the fault according to Annotation. (default [])
--buffer uint32 the maximum number of bytes that can be sent instantaneously. (default 1)
--direction string You can select "to"" or "from"" or "both"". (default "to")
--dry-run string[="unchanged"] Must be "client", or "server". If with client strategy, only print the object that would be sent, and no data is actually sent. If with server strategy, submit the server-side request, but no data is persistent. (default "none")
--duration string Supported formats of the duration are: ms / s / m / h. (default "10s")
-e, --external-target stringArray a network target outside of Kubernetes, which can be an IPv4 address or a domain name,
such as "www.baidu.com". Only works with direction: to.
-h, --help help for bandwidth
--label stringToString label for pod, such as '"app.kubernetes.io/component=mysql, statefulset.kubernetes.io/pod-name=mycluster-mysql-0. (default [])
--limit uint32 the number of bytes waiting in the queue. (default 1)
--minburst uint32 the size of the peakrate bucket.
--mode string You can select "one", "all", "fixed", "fixed-percent", "random-max-percent", Specify the experimental mode, that is, which Pods to experiment with. (default "all")
--node stringArray Inject faults into pods in the specified node.
--node-label stringToString label for node, such as '"kubernetes.io/arch=arm64,kubernetes.io/hostname=minikube-m03,kubernetes.io/os=linux. (default [])
--ns-fault stringArray Specifies the namespace into which you want to inject faults. (default [default])
-o, --output format Prints the output in the specified format. Allowed values: JSON and YAML (default yaml)
--peakrate uint the maximum consumption rate of the bucket.
--phase stringArray Specify the pod that injects the fault by the state of the pod.
--rate string the rate at which the bandwidth is limited. For example : 10 bps/kbps/mbps/gbps.
--target-label stringToString label for pod, such as '"app.kubernetes.io/component=mysql, statefulset.kubernetes.io/pod-name=mycluster-mysql-0"' (default [])
--target-mode string You can select "one", "all", "fixed", "fixed-percent", "random-max-percent", Specify the experimental mode, that is, which Pods to experiment with.
--target-ns-fault stringArray Specifies the namespace into which you want to inject faults.
--target-value string If you choose mode=fixed or fixed-percent or random-max-percent, you can enter a value to specify the number or percentage of pods you want to inject.
--value string If you choose mode=fixed or fixed-percent or random-max-percent, you can enter a value to specify the number or percentage of pods you want to inject.
Options inherited from parent commands
--as string Username to impersonate for the operation. User could be a regular user or a service account in a namespace.
--as-group stringArray Group to impersonate for the operation, this flag can be repeated to specify multiple groups.
--as-uid string UID to impersonate for the operation.
--cache-dir string Default cache directory (default "$HOME/.kube/cache")
--certificate-authority string Path to a cert file for the certificate authority
--client-certificate string Path to a client certificate file for TLS
--client-key string Path to a client key file for TLS
--cluster string The name of the kubeconfig cluster to use
--context string The name of the kubeconfig context to use
--disable-compression If true, opt-out of response compression for all requests to the server
--insecure-skip-tls-verify If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
--kubeconfig string Path to the kubeconfig file to use for CLI requests.
--match-server-version Require server version to match client version
-n, --namespace string If present, the namespace scope for this CLI request
--request-timeout string The length of time to wait before giving up on a single server request. Non-zero values should contain a corresponding time unit (e.g. 1s, 2m, 3h). A value of zero means don't timeout requests. (default "0")
-s, --server string The address and port of the Kubernetes API server
--tls-server-name string Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used
--token string Bearer token for authentication to the API server
--user string The name of the kubeconfig user to use
SEE ALSO
- kbcli fault network - Network chaos.