Etcd helper
A helper tool for getting OpenShift/Kubernetes data directly from Etcd.
How to build
$ go build .
Basic Usage
This requires setting the following flags:
-key- points tomaster.etcd-client.key-cert- points tomaster.etcd-client.crt-cacert- points toca.crt
Once these are set properly, one can invoke the following actions:
ls- list all keys starting with prefixget- get the specific value of a keyput- put the specific value of a keydump- dump the entire contents of the etcd
Sample Usage
Get etcd information.
export ETCDCTL_CACERT="/etc/kubernetes/static-pod-resources/etcd-certs/configmaps/etcd-serving-ca/ca-bundle.crt"
export ETCDCTL_KEY="/etc/kubernetes/static-pod-certs/resources/etcd-certs/secrets/etcd-all-certs/etcd-peer-mmcn.openlab.red.key"
export ETCDCTL_KEY="/etc/kubernetes/static-pod-resources/etcd-certs/secrets/etcd-all-certs/etcd-peer-mmcn.openlab.red.key"
export ETCDCTL_CERT="/etc/kubernetes/static-pod-resources/etcd-certs/secrets/etcd-all-certs/etcd-peer-mmcn.openlab.red.crt"
List all keys starting with /openshift.io:
./etcdhelper -key $ETCDCTL_KEY -cert $ETCDCTL_CERT -cacert $ETCDCTL_CACERT ls /openshift.io
Get JSON-representation of /kubernetes.io/clusterrolebindings/system-bootstrap-node-bootstrapper:
./etcdhelper -key $ETCDCTL_KEY -cert $ETCDCTL_CERT -cacert $ETCDCTL_CACERT get /kubernetes.io/clusterrolebindings/system-bootstrap-node-bootstrapper
Put value (JSON or YAML) to /kubernetes.io/clusterrolebindings/system-bootstrap-node-bootstrapper:
./etcdhelper -key $ETCDCTL_KEY -cert $ETCDCTL_CERT -cacert $ETCDCTL_CACERT put /kubernetes.io/clusterrolebindings/system-bootstrap-node-bootstrapper '
'
Dump the contents of etcd to stdout:
./etcdhelper -key $ETCDCTL_KEY -cert $ETCDCTL_CERT -cacert $ETCDCTL_CACERT dump
