Both `ExecuteCommandWithOutputFileTimeout()` and
`ExecuteCommandWithOutputFile()` generate unnecessary system calls by
creating/reading/removing files where the stream output of the command
can simply be used. So sticking with `ExecuteCommandWithOutput()` and
`ExecuteCommandWithCombinedOutput()` for reading outputs is sufficient.
Closes: https://github.com/rook/rook/issues/8343
Signed-off-by: Sébastien Han <seb@redhat.com>
Sometimes `radosgw-admin` succeeds after showing logs to stderr. We should
skip non-json strings if parsing output as json.
Here is an example.
```
2021-02-26 04:10:44.190418 I | op-bucket-prov: creating Ceph user "ceph-user-aSzNqgE7"
E0226 04:11:37.901310 8 controller.go:199] error syncing 'logging/loki-bucket': error provisioning bucket: Provision: can't create ceph user: error creating ceph user "ceph-user-aSzNqgE7": failed to unmarshal json. 2021-02-26T04:11:21.425+0000 7f6714be4980 1 robust_notify: If at first you don't succeed: (110) Connection timed out
2021-02-26T04:11:21.426+0000 7f6714be4980 0 ERROR: failed to distribute cache for ceph-hdd-object-store.rgw.meta:users.uid:ceph-user-aSzNqgE7
2021-02-26T04:11:32.168+0000 7f6714be4980 1 robust_notify: If at first you don't succeed: (110) Connection timed out
2021-02-26T04:11:32.168+0000 7f6714be4980 0 ERROR: failed to distribute cache for ceph-hdd-object-store.rgw.meta:users.keys:23Z8GUEXR0TJDO86PSJR
{
"user_id": "ceph-user-aSzNqgE7",
"display_name": "ceph-user-aSzNqgE7",
...
"mfa_ids": []
}: invalid character '-' after top-level value: failed to unmarshal json.
```
In this case, some logs like "robust_notify:..." was shown in stderr.
Unmarsharing was failed due to tried to parse these logs as json.
Signed-off-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>
Sébastien Han
Satoru Takeuchi
Arun Kumar Mohan
Ali Maredia