Cannot start performance test on ARM K8s: Action id 32 failed: Failed: sysbench is not prepared

[taurus-forever]

Steps to reproduce

1. juju set-model-constraints arch=arm64
2. juju deploy postgresql-k8s --trust --channel 14/edge --config profile=testing
3. juju deploy sysbench
4. juju config sysbench threads=1 scale=1 duration=300
5. juju relate sysbench postgresql-k8s
6. wait for all stable
7. juju run sysbench/leader prepare

   
   taurus@pi5juju:~$ juju run sysbench/leader prepare
   Running operation 29 with 1 task
   - task 30 on unit-sysbench-0

Waiting for task 30... ERROR timed out waiting for results from: unit sysbench/0 ... taurus@pi5juju:~$ juju show-task 30 status: prepared

taurus@pi5juju:~$ juju run sysbench/leader run Running operation 31 with 1 task

• task 32 on unit-sysbench-0

Waiting for task 32... Action id 32 failed: Failed: sysbench is not prepared

## Expected behavior
No errors and test on Microk8s started the same way as on LXD.
I have feeling it used to work earlier... and lost in the last revisions.

## Actual behavior
Cannot start performance test.

## Versions

Operating system: Ubuntu 23.10
Juju CLI: 3.4.2-genericlinux-arm64
Juju agent: see above
Charm revision: see above
LXD: not applicable
MicroK8s: MicroK8s v1.30.0 revision 6788 (strict)

taurus@pi5juju:~$ juju status Model Controller Cloud/Region Version SLA Timestamp arm m2k8s microk8s/localhost 3.4.2 unsupported 03:04:09+02:00

App Version Status Scale Charm Channel Rev Address Exposed Message postgresql-k8s 14.11 active 1 postgresql-k8s 14/edge 248 10.152.183.57 no Primary sysbench active 1 sysbench latest/stable 25 10.152.183.154 no

Unit Workload Agent Address Ports Message postgresql-k8s/0 active idle 10.1.46.58 Primary sysbench/0 active idle 10.1.46.63

Juju debug-log is clean... no errors.

[github-actions[bot]]

https://warthogs.atlassian.net/browse/DPE-4287