Permissions needed to use vfs.file.cksum

[mehrzad329]

hello, I'm trying to get the checksum of some files in my servers to monitor their changes. I cannot change there permissions because they're so important. I've heard that I can use ACL method for using vfs.file.cksum[MyFile,sha256], But I don't know how to do that. I have CentOS7 and Ubuntu20.04 and Zabbix 6. Now I get this error: "Cannot open file: [13] Permission denied". . here might be other ways I'm not thinking of, and it's my pleasure to use your advices. Thank you.