Jack I wonder if the described approach can be adopted not only in Tomcat but with other services as well database, reverse proxy, etc.
Go to start of metadata Status of Hive Authorization before Hive 0. It only helps in preventing users from accidentally doing operations they are not supposed to do. It is also incomplete because it does not have authorization checks for many operations including the grant statement.
The authorization checks happen during Hive query compilation. But as the user is allowed to execute dfs commands, user-defined functions and shell commands, it is possible to bypass the client security checks.
As of Hive 0. While it can protect the metastore against changes by malicious users, it does not support fine grained access control column or row level. The default authorization model in Hive can be used to provide fine grained access control by creating views and granting access to views instead of the underlying tables.
This is recommended because it allows Hive to be fully SQL compliant in its authorization model without causing backward compatibility issues for current users.
As users migrate to this more secure model, the current default authorization could be deprecated. This authorization mode can be used in conjunction with storage based authorization on the metastore server.
Like the current default authorization in Hive, this will also be enforced at query compilation time. To provide security through this option, the client will have to be secured.
This can be done by allowing users access only through Hive Server2, and by restricting the user code and non-SQL commands that can be run. The checks will happen against the user who submits the request, but the query will run as the Hive server user.
The directories and files for input data would have read access for this Hive server user. The goal of this work has been to comply with the SQL standard as far as possible, but there are deviations from the standard in the implementation.
Some deviations were made to make it easier for existing Hive users to migrate to this authorization model, and some were made considering ease of use in such cases we also looked at what many widely used databases do.
In an organization, it is typically only the teams that work on ETL workloads that need such access. These tools don't access the data through HiveServer2, and as a result their access is not authorized through this model.
The set commands used to change Hive configuration are restricted to a smaller safe set. If this set needs to be customized, the HiveServer2 administrator can set a value for this configuration parameter in its hive-site. Privileges to add or drop functions and macros are restricted to the admin role.
To enable users to use functions, the ability to create permanent functions has been added. A user in the admin role can run commands to create these functions, which all users can then use.
The Hive transform clause is also disabled when this authorization is enabled.
Objects The privileges apply to table and views. The above privileges are not supported on databases. Database ownership is considered for certain actions. The above privileges are not applicable on URI objects.To use remote data access (RDA), you must grant access to the Microsoft SQL Server database based on how Microsoft Internet Information Services (IIS) and SQL Server Authentication are configured.
If it's Linux, you should make sure that the apache user (the exact user name will depend on your setup - often httpd or www-data under Linux) has write access to the directory.
You can change the owner to the same user as apache (using chown) and set give the owner write access (e.g. "chmod ") or you can make it world writable (e.g.
"chmod. Label files and directories you have created with the public_content_rw_t type to share them with read and write permissions through regardbouddhiste.com services, such as Apache HTTP Server, Samba, and NFS, also have access to files labeled with this type.
We do some blanket commands restricting access, and then open access up as much as we need to. To start, make it so no-one but the current user (www-data) can access the web-root content.
We use 'go', meaning apply to 'group' and 'other'. where principal_name is the name of a user or role.. Lists all roles the given user or role has been granted.
Currently any user can run this command.
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|file permissions - How do I give PHP write access to a directory? - Stack Overflow||Grant Apache read access to a file? User Name Remember Me?|
|Restrictions on Hive Commands and Statements||A webserver interacts with two types of user. Authenticated users have a user account on the server and can be provided with specific privileges.|
But this is likely to change in future to allow users to see only their own role grants, and additional privileges would be needed to see role grants of other users. Setting Permissions in Apache. Posted on January 10, by OReillyMedia.
Allowing any other account to have write access to the httpd binary would give that account privileges to execute anything as root. This problem would occur, for example, if an attacker broke into the system.