./initialize_cluster.sh throws error

```bash
./initialize_cluster.sh
```

When the above command is executed I get the error

> Error: unknown shorthand flag: 'e' in -execute
> See 'influx -h' for help
> command terminated with exit code 1

This error is thrown from the line
```bash
kubectl -n $namespace exec -ti $influxdb_pod -- influx -execute 'CREATE DATABASE jmeter'
```

Any idea about this error?

Start in initialize_cluster.sh at the kubectl exec command shown in the issue, then reproduce the command to inspect the reported CLI error. Verify the command syntax against the available command-line tools and confirm that initialization completes with the jmeter database created without an error.

Written by the indexing model from the issue text.