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Add more verbose output #5

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Add more verbose output #5

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47 changes: 40 additions & 7 deletions kubectl-capture
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ now=$(date +%s)
capture_pod=""
sysdig_params=""
ebpf="0"
verborse="0"

function main() {
parse_arguments "$@"
Expand All @@ -35,6 +36,9 @@ function parse_arguments() {
--ebpf)
ebpf="1"
;;
-v)
verbose="1"
;;
-w|--write=*|-z|--compress|-pc|-pk|-pm|-print=*|-S|--summary)
# Do not allow changes on these parameters
echo $0: $1: skipping parameter for Sysdig>&2
Expand Down Expand Up @@ -64,12 +68,18 @@ Usage: kubectl capture POD [-ns NAMESPACE] [sysdig options]
Options:
-ns | --namespace The namespace where the target pod lives (default: default)
--ebpf Launch capture pod with eBPF probe instead of kernel module
-v Set verbose option to follow the whole process
EOF
exit $1
}

function start_capture() {
node=$(kubectl -n ${namespace} get pod ${pod} -o jsonpath='{.spec.nodeName}' 2>/dev/null)
if [[ "${verbose}" -eq "1" ]];then
node=$(kubectl -n ${namespace} get pod ${pod} -o jsonpath='{.spec.nodeName}' 2>/dev/null)
else
node=$(kubectl -n ${namespace} get pod ${pod} -o jsonpath='{.spec.nodeName}')
fi

if [[ $? -ne 0 ]];then
echo "error: Unable to trigger a capture on pod ${pod}"
exit 1
Expand All @@ -81,7 +91,12 @@ function start_capture() {
build_capture_pod
fi

kubectl apply -f capture-pod.yaml > /dev/null 2>&1
if [[ "${verbose}" -eq "1" ]];then
kubectl apply -f capture-pod.yaml
else
kubectl apply -f capture-pod.yaml > /dev/null 2>&1
fi

rm capture-pod.yaml

echo "Sysdig is starting to capture system calls:"
Expand All @@ -94,10 +109,22 @@ function start_capture() {

wait_until_finished

kubectl cp ${capture_pod}:/${capture_pod}.scap.gz ${capture_pod}.scap.gz > /dev/null 2>&1
kubectl delete pod ${capture_pod} > /dev/null 2>&1
echo "The capture has been downloaded to your hard disk at:"
echo "${PWD}/${capture_pod}.scap.gz"

if [[ "${verbose}" -eq "1" ]];then
kubectl logs ${capture_pod}
kubectl cp ${capture_pod}:/${capture_pod}.scap.gz ${capture_pod}.scap.gz
kubectl delete pod ${capture_pod}
else
kubectl cp ${capture_pod}:/${capture_pod}.scap.gz ${capture_pod}.scap.gz > /dev/null 2>&1
kubectl delete pod ${capture_pod} > /dev/null 2>&1
fi

if [[ -f "${PWD}/${capture_pod}.scap.gz" ]]; then
echo "The capture has been downloaded to your hard disk at:"
echo "${PWD}/${capture_pod}.scap.gz"
else
echo "Error capturing, file not created. Try with the verbose option(-v) to have get more info."
fi
}

function build_capture_pod() {
Expand Down Expand Up @@ -265,7 +292,13 @@ function delete_capture_pod() {
if [[ -n "${capture_pod}" ]]; then
echo ""
echo "Please wait until capture pod is deleted"
kubectl delete pod ${capture_pod} > /dev/null 2>&1

if [[ "${verbose}" -eq "1" ]];then
kubectl delete pod ${capture_pod}
else
kubectl delete pod ${capture_pod} > /dev/null 2>&1
fi

fi
exit 0
}
Expand Down