k8slog

This is a tool to Tail logs from multiple pods and containers inside Kubernetes

git clone https://github.com/perfect6566/k8slog.git
cd k8slog && go build -o k8slog

then you can get the k8slog in your k8slog folder

Usage:

./k8slog [-n namespace] [-f tail lines] [-s since ] [-l k8s label Selector] [-c container name] [-r running inside or outside k8s,default is "o utside" k8s] [-kubeconfig absolute path to the kubeconfig file]

Examples:

//Tail log from pods with label singlecontainer in ns mynamespace and follow the last 100 line logs
./k8slog -n mynamespace -l label=singlecontainer -f 100

//Tail log from container named containername in pods with label muticontainer in ns mynamespace and follow the last 100 line logs
./k8slog -n mynamespace -l label=muticontainer -f 100 -c containername

//Tail log from container named containername in pods with label muticontainer in ns mynamespace and follow the recent 1.5 hour logs
./k8slog -n mynamespace -l label=muticontainer -s 1.5h -c containername

//Tail log from container named containername in pods with label muticontainer in ns mynamespace and follow the recent 1.5 hour logs and it is u sed as pod inside k8s
./k8slog -n mynamespace -l label=muticontainer -s 1.5h -c containername -r inside

//Tail log from container named containername in pods with label muticontainer in ns mynamespace and follow the recent 1.5 hour logs with the ku beconfig file

//Tail log from container named containername in pods with label muticontainer in ns mynamespace and follow the recent 1.5 hour logs and it is u sed as pod inside k8s
./k8slog -n mynamespace -l label=muticontainer -s 1.5h -c containername -r inside

//Tail log from container named containername in pods with label muticontainer in ns mynamespace and follow the recent 1.5 hour logs with the ku beconfig file
./k8slog -n mynamespace -l label=muticontainer -s 1.5h -c containername -kubeconfig admin.kubeconfig

Options:

-c string
  -c container name , Container name when multiple containers in pod
-f int
  -f 10,The number of lines from the end of the logs to show. Defaults to -1, showing all logs. (default -1)
-kubeconfig string
  (optional) absolute path to the kubeconfig file,default is ${HOME}/.kube/config
-l string
  -l app=nginx,Selector (label query) to filter on. If present, default to ".*" for the pod-query.
-n string
  -n namespace (default "default")
-r string
  -r inside means run inside k8s,by default it is running outside k8s (default "outside")
-s duration
  -s 10s : Return logs newer than a relative duration like 5s, 2m, or 2.5h.