Security-Enhanced Linux secures the corosync processes via flexible mandatory access control.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd serve for the corosync_t, you must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the corosync_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
You can see the context of a file using the -Z option to lsP Policy governs the access confined processes have to these files. SELinux corosync policy is very flexible allowing users to setup their corosync processes in as secure a method as possible.
The following file types are defined for corosync:
corosync_exec_t
- Set files with the corosync_exec_t type, if you want to transition an executable to the corosync_t domain.
corosync_initrc_exec_t
- Set files with the corosync_initrc_exec_t type, if you want to transition an executable to the corosync_initrc_t domain.
corosync_tmp_t
- Set files with the corosync_tmp_t type, if you want to store corosync temporary files in the /tmp directories.
corosync_tmpfs_t
- Set files with the corosync_tmpfs_t type, if you want to store corosync files on a tmpfs file system.
corosync_unit_file_t
- Set files with the corosync_unit_file_t type, if you want to treat the files as corosync unit content.
corosync_var_lib_t
- Set files with the corosync_var_lib_t type, if you want to store the corosync files under the /var/lib directory.
corosync_var_log_t
- Set files with the corosync_var_log_t type, if you want to treat the data as corosync var log data, usually stored under the /var/log directory.
corosync_var_run_t
- Set files with the corosync_var_run_t type, if you want to store the corosync files under the /run directory.
Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux corosync policy is very flexible allowing users to setup their corosync processes in as secure a method as possible.
The following process types are defined for corosync:
corosync_t
Note: semanage permissive -a PROCESS_TYPE can be used to make a process type permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.
The SELinux user type corosync_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.
cluster_tmpfs
cluster_var_lib_t
/var/lib/cluster(/.*)?
clvmd_tmpfs_t
cmirrord_tmpfs_t
corosync_tmp_t
corosync_tmpfs_t
corosync_var_lib_t
/var/lib/corosync(/.*)?
corosync_var_log_t
/var/log/cluster/corosync.log.*
corosync_var_run_t
/var