Basically, I need clarification if this is the right way to do: I am able to run sed command inside a container on a k8s pod. Now, the same sed I want to loop over for 10times but am not sure if this is working though I get no error from kubernetes pods or logs. Please confirm if my looping is good.
'sed -i "s/\(training:\).*/\1 12/" ghav/default_sql.spec.txt &&
lant estimate -e dlav/lat/experiment_specs/default_sql.spec.txt -r /out'I want to do this working command 10times inside the same container. is the below right?
'for run in $(seq 1 10); do sed -i "s/\(training:\).*/\1 12/" ghav/default_sql.spec.txt &&
lant estimate -e dlav/lat/experiment_specs/default_sql.spec.txt -r /out; done' the pod gets created and is running fine but am not sure how to confirm my loop is good and am doing that 10times...
inside pod describe I see below
Args:
sh
-c
'for run in $(seq 1 10); do sed -i "s/\(training:\).*/\1 12/" ghav/default_sql.spec.txt &&
lant estimate -e dlav/lat/experiment_specs/default_sql.spec.txt -r /out; done'The "Define a Command and Arguments for a Container" does mention:
To see the output of the command that ran in the container, view the logs from the Pod:
kubectl logs command-demo
So make sure that your command, for testing, does echo something, and check the pod logs.
sh -c 'for run in $(seq 1 10); do echo "$run"; done'As in:
command: ["/bin/sh"]
args: ["-c", "for run in $(seq 1 10); do echo \"$run\"; done"](using seq here, as mentioned in kubernetes issue 56631)
For any complex sequence of commands, mixing quotes, it is best to wrap that sequence in a script file, and call that executable file 10 tiles. The logs will confirm that the loop is executed 10 times.