Security-Enhanced Linux secures the collectd processes via flexible mandatory access control.
The collectd processes execute with the collectd_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 collectd_t
The collectd_t SELinux type can be entered via the collectd_exec_t file type.
The default entrypoint paths for the collectd_t domain are the following:
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux collectd policy is very flexible allowing users to setup their collectd processes in as secure a method as possible.
The following process types are defined for collectd:
collectd_t, collectd_script_t
Note: semanage permissive -a collectd_t can be used to make the process type collectd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.
If you want to determine whether collectd can connect to the network using TCP, you must turn on the collectd_tcp_network_connect boolean. Disabled by default.
setsebool -P collectd_tcp_network_connect 1
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the authlogin_nsswitch_use_ldap boolean. Disabled by default.
setsebool -P authlogin_nsswitch_use_ldap 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 run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.
setsebool -P kerberos_enabled 1
If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.
setsebool -P nis_enabled 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
If you want to support ecryptfs home directories, you must turn on the use_ecryptfs_home_dirs boolean. Disabled by default.
setsebool -P use_ecryptfs_home_dirs 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 collectd policy is very flexible allowing users to setup their collectd processes in as secure a method as possible.
The following port types are defined for collectd:
Default Defined Ports: udp 25826
The SELinux process type collectd_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
collectd_log_t
/var/log/collectd.json.log
collectd_var_lib_t
/var/lib/collectd(/.*)?
collectd_var_run_t
/var/run/collectd(/.*)?
/var/run/collectd.pid
/var/run/collectd-unixsock
ecryptfs_t
/home/[^/]+/.Private(/.*)?
/home/[^/]+/.ecryptfs(/.*)?
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 collectd policy is very flexible allowing users to setup their collectd processes in as secure a method as possible.
EQUIVALENCE DIRECTORIES
collectd policy stores data with multiple different file context types under the /var/run/collectd directory. If you would like to store the data in a different directory you can use the semanage command to create an equivalence mapping. If you wanted to store this data under the /srv dirctory you would execute the following command:
semanage fcontext -a -e /var/run/collectd /srv/collectd
restorecon -R -v /srv/collectd
STANDARD FILE CONTEXT
SELinux defines the file context types for the collectd, 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 collectd_script_tmp_t '/srv/mycollectd_content(/.*)?'
restorecon -R -v /srv/mycollectd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files.
The following file types are defined for collectd:
collectd_content_t
- Set files with the collectd_content_t type, if you want to treat the files as collectd content.
collectd_exec_t
- Set files with the collectd_exec_t type, if you want to transition an executable to the collectd_t domain.
collectd_htaccess_t
- Set files with the collectd_htaccess_t type, if you want to treat the file as a collectd access file.
collectd_initrc_exec_t
- Set files with the collectd_initrc_exec_t type, if you want to transition an executable to the collectd_initrc_t domain.
collectd_log_t
- Set files with the collectd_log_t type, if you want to treat the data as collectd log data, usually stored under the /var/log directory.
collectd_ra_content_t
- Set files with the collectd_ra_content_t type, if you want to treat the files as collectd read/append content.
collectd_rw_content_t
- Set files with the collectd_rw_content_t type, if you want to treat the files as collectd read/write content.
collectd_script_exec_t
- Set files with the collectd_script_exec_t type, if you want to transition an executable to the collectd_script_t domain.
collectd_script_tmp_t
- Set files with the collectd_script_tmp_t type, if you want to store collectd script temporary files in the /tmp directories.
collectd_unit_file_t
- Set files with the collectd_unit_file_t type, if you want to treat the files as collectd unit content.
collectd_var_lib_t
- Set files with the collectd_var_lib_t type, if you want to store the collectd files under the /var/lib directory.
collectd_var_run_t
- Set files with the collectd_var_run_t type, if you want to store the collectd 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.