[Improvement] tenant supports users of other databases like ldap

[JohnZp]

Search before asking

• [X] I had searched in the issues and found no similar feature requirement.

Description

    private static List<String> getUserListFromLinux() throws IOException {
        List<String> userList = new ArrayList<>();
        try (
                BufferedReader bufferedReader = new BufferedReader(
                        new InputStreamReader(new FileInputStream("/etc/passwd")))) {
            String line;

            while ((line = bufferedReader.readLine()) != null) {
                if (line.contains(":")) {
                    String[] userInfo = line.split(":");
                    userList.add(userInfo[0]);
                }
            }
        }

        return userList;
    }

This method of obtaining a complete list of users is not enough. Why not use getent passwd?

Are you willing to submit a PR?

• [ ] Yes I am willing to submit a PR!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[SbloodyS]

Would you like to fix it? @JohnZp

[JohnZp]

Would you like to fix it? @JohnZp

I will try it when I have time

[ruanwenjun]

Can we make this to be configured? I still do not know why getent passwd is better than /etc/passwd.

[JohnZp]

Can we make this to be configured? I still do not know why getent passwd is better than /etc/passwd.

In my current environment, which is MRS, user creation is managed by a unified service. The users created by this service are not present in /etc/passwd, which might make my scenario somewhat unique.

[SbloodyS]

This command getent does not exist in all environments, we can make it configurable for users to choose.