How to change .security-6 index to read-write

Elastic Stack Elasticsearch
1

My ES nodes were out of space and ES decided to take all indices read-only. After i ve added space and altered all indices to read-write i was successfull. But i could not alter the .security-6 index to read-write. Can you please show me a way how to do it without disabling the security.

{
  "error": {
    "root_cause": [
      {
        "type": "security_exception",
        "reason": "action [indices:admin/settings/update] is unauthorized for user [admin]"
      }
    ],
    "type": "security_exception",
    "reason": "action [indices:admin/settings/update] is unauthorized for user [admin]"
  },
  "status": 403
}
2

I can not even delete it

{
  "error": {
    "root_cause": [
      {
        "type": "security_exception",
        "reason": "action [indices:admin/delete] is unauthorized for user [root]"
      }
    ],
    "type": "security_exception",
    "reason": "action [indices:admin/delete] is unauthorized for user [root]"
  },
  "status": 403
}
3

I ve changed the , file based users role to superuser and could altered the special indexes. If you do not use filebased users you should create one to solve this issue.