Executing multiple commands( or from a shell script) in a kubernetes pod

Question

I\'m writing a shell script which needs to login into the pod and execute a series of commands in a kubernetes pod.

below is my sample_script.sh

kubect

Answer 1

-t can solve your task

For example, I run here few cmd:

kubectl get pods |grep nginx|cut -f1 -d\  |\
while read pod; \
 do echo "$pod writing:";\
  kubectl exec -t $pod -- bash -c \
   "dd if=/dev/zero of=/feeds/test.bin bs=260K count=4 2>&1|\
    grep copi |cut -d, -f4; \
    a=$SECONDS; echo -ne 'reading:'; cat /feeds/test.bin >/dev/null ; \
    let a=SECONDS-a ; \
    echo $a sec"
done

p.s. your example will be:

kubectl exec -t octavia-api-worker-pod-test -c octavia-api -- bash -c "unset http_proxy https_proxy ; mv /usr/local/etc/octavia/octavia.conf /usr/local/etc/octavia/octavia.conf-orig ; /usr/local/bin/octavia-db-manage --config-file /usr/local/etc/octavia/octavia.conf ; upgrade ; head"