Security-Enhanced Linux secures the redis processes via flexible mandatory access control.
The redis processes execute with the redis_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.
For example:
ps -eZ | grep redis_t
The redis_t SELinux type can be entered via the redis_exec_t file type.
The default entrypoint paths for the redis_t domain are the following:
/var/opt/rh/rh-redis32/redis(/.*)?, /usr/bin/redis-server
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux redis policy is very flexible allowing users to setup their redis processes in as secure a method as possible.
The following process types are defined for redis:
redis_t
Note: semanage permissive -a redis_t can be used to make the process type redis_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
If you want to allow Redis to run redis-sentinal notification scripts, you must turn on the redis_enable_notify boolean. Disabled by default.
setsebool -P redis_enable_notify 1
If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.
setsebool -P fips_mode 1
If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Enabled by default.
setsebool -P nscd_use_shm 1
You can see the types associated with a port by using the following command:
semanage port -l
Policy governs the access confined processes have to these ports. SELinux redis policy is very flexible allowing users to setup their redis processes in as secure a method as possible.
The following port types are defined for redis:
Default Defined Ports: tcp 6379,16379,26379
The SELinux process type redis_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_conf_t
/etc/cluster(/.*)?
cluster_var_lib_t
/var/lib/pcsd(/.*)?
/var/lib/cluster(/.*)?
/var/lib/openais(/.*)?
/var/lib/pengine(/.*)?
/var/lib/corosync(/.*)?
/usr/lib/heartbeat(/.*)?
/var/lib/heartbeat(/.*)?
/var/lib/pacemaker(/.*)?
cluster_var_run_t
/var/run/crm(/.*)?
/var/run/cman_.*
/var/run/rsctmp(/.*)?
/var/run/aisexec.*
/var/run/heartbeat(/.*)?
/var/run/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/corosync.pid
/var/run/cpglockd.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk
postfix_spool_t
/var/spool/postfix.*
/var/spool/postfix/defer(/.*)?
/var/spool/postfix/flush(/.*)?
/var/spool/postfix/deferred(/.*)?
/var/spool/postfix/maildrop(/.*)?
redis_conf_t
/etc/redis-sentinel.*
redis_log_t
/var/log/redis(/.*)?
redis_tmp_t
redis_var_lib_t
/var/lib/redis(/.*)?
redis_var_run_t
/var/run/redis(/.*)?
root_t
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
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 redis policy is very flexible allowing users to setup their redis processes in as secure a method as possible.
STANDARD FILE CONTEXT
SELinux defines the file context types for the redis, if you wanted to store files with these types in a diffent paths, you need to execute the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.
semanage fcontext -a -t redis_unit_file_t '/srv/myredis_content(/.*)?'
restorecon -R -v /srv/myredis_content
Note: SELinux often uses regular expressions to specify labels that match multiple files.
The following file types are defined for redis:
redis_conf_t
- Set files with the redis_conf_t type, if you want to treat the files as redis configuration data, usually stored under the /etc directory.
redis_exec_t
- Set files with the redis_exec_t type, if you want to transition an executable to the redis_t domain.
redis_initrc_exec_t
- Set files with the redis_initrc_exec_t type, if you want to transition an executable to the redis_initrc_t domain.
redis_log_t
- Set files with the redis_log_t type, if you want to treat the data as redis log data, usually stored under the /var/log directory.
redis_tmp_t
- Set files with the redis_tmp_t type, if you want to store redis temporary files in the /tmp directories.
redis_unit_file_t
- Set files with the redis_unit_file_t type, if you want to treat the files as redis unit content.
redis_var_lib_t
- Set files with the redis_var_lib_t type, if you want to store the redis files under the /var/lib directory.
redis_var_run_t
- Set files with the redis_var_run_t type, if you want to store the redis files under the /run or /var/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.
semanage permissive can also be used to manipulate whether or not a process type is permissive.
semanage module can also be used to enable/disable/install/remove policy modules.
semanage port can also be used to manipulate the port definitions
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux policy settings.