Red Hat Summit3.4. Confined administrator roles in SELinux
In SELinux, confined administrator roles grant specific sets of privileges and permissions for performing specific tasks to the Linux users assigned to them. By assigning separate confined administrator roles, you can divide the privileges over various domains of system administration to individual users. This is useful in scenarios with multiple administrators, each with a separate domain.
You can assign these roles to SELinux users by using the semanage user command.
SELinux has the following confined administrator roles:
auditadm_rThe audit administrator role allows managing processes related to the Audit subsystem.
Related boolean:
SELinux boolean State Default Description auditadm_exec_content (on , on) Allow auditadm to exec contentdbadm_rThe database administrator role allows managing MariaDB and PostgreSQL databases.
Related booleans:
SELinux boolean State Default Description dbadm_exec_content (on , on) Allow dbadm to exec content dbadm_manage_user_files (off , off) Determine whether dbadm can manage generic user files. dbadm_read_user_files (off , off) Determine whether dbadm can read generic user files.logadm_rThe log administrator role allows managing logs, specifically, SELinux types related to the Rsyslog logging service and the Audit subsystem.
Related boolean:
SELinux boolean State Default Description logadm_exec_content (on , on) Allow logadm to exec contentwebadm_rThe web administrator allows managing the Apache HTTP Server.
Related booleans:
SELinux boolean State Default Description webadm_manage_user_files (off , off) Determine whether webadm can manage generic user files. webadm_read_user_files (off , off) Determine whether webadm can read generic user files.secadm_rThe security administrator role allows managing the SELinux database.
Related booleans:
SELinux boolean State Default Description secadm_exec_content (on , on) Allow secadm to exec contentsysadm_rThe system administrator role allows doing everything of the previously listed roles and has additional privileges. In non-default configurations, security administration can be separated from system administration by disabling the
sysadm_secadmmodule in the SELinux policy. For detailed instructions, see Separating system administration from security administration in MLS.The
sysadm_uuser cannot log in directly using SSH. To enable SSH logins forsysadm_u, set thessh_sysadm_loginboolean toon:# setsebool -P ssh_sysadm_login onRelated booleans:
SELinux boolean State Default Description ssh_sysadm_login (on , on) Allow ssh logins as sysadm_r:sysadm_t sysadm_exec_content (on , on) Allow sysadm to exec content xdm_sysadm_login (on , on) Allow the graphical login program to login directly as sysadm_r:sysadm_t
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