health_ch...r_selinux(8)

🩺 NAME 🩺

okay bestie, welcome to the health_ch...r_selinux(8) manual page — it’s all about the SELinux policy for the health_checker processes, and yes we’re gonna make it make sense 💖

health_checker_selinux — Security Enhanced Linux Policy for the health_checker processes.

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💅 DESCRIPTION 💅

Security-Enhanced Linux secures the health_checker processes via flexible mandatory access control. periodt.

The health_checker processes execute with the health_checker_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 health_checker_t

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🚪 ENTRYPOINTS 🚪

The health_checker_t SELinux type can be entered via the health_checker_exec_t file type.

The default entrypoint paths for the health_checker_t domain are the following:

/usr/bin/health-checker

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👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system.

You can see the context of a process using the -Z option to ps.

Policy governs the access confined processes have to files. SELinux health_checker policy is very flexible, allowing users to setup their health_checker processes in as secure a method as possible.

The following process types are defined for health_checker:

• health_checker_t
• health_checker_plugin_t

Note: semanage permissive -a health_checker_t can be used to make the process type health_checker_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. iykyk 💅

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🎚️ BOOLEANS 🎚️

SELinux policy is customizable based on least access required. health_checker policy is extremely flexible and has several booleans that allow you to manipulate the policy and run health_checker with the tightest access possible.

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

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📂 MANAGED FILES 📂

The SELinux process type health_checker_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.

• health_checker_var_lib_t

/var/lib/misc/health-check.*

• mount_var_run_t

/run/mount(/.*)?
/dev/.mount(/.*)?
/run/davfs2(/.*)?
/var/cache/davfs2(/.*)?

• systemd_passwd_var_run_t

/run/systemd/ask-password(/.*)?
/run/systemd/ask-password-block(/.*)?

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🏷️ FILE CONTEXTS 🏷️

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls.

Policy governs the access confined processes have to these files. SELinux health_checker policy is very flexible, allowing users to setup their health_checker processes in as secure a method as possible.

✨ STANDARD FILE CONTEXT ✨

SELinux defines the file context types for the health_checker. If you wanted to store files with these types in different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk.

Here’s the exact snippet from the page, line breaks and all:

semanage fcontext -a -t health_checker_exec_t
'/srv/health_checker/content(/.*)?'
restorecon -R -v /srv/myhealth_checker_content

Note: SELinux often uses regular expressions to specify labels that match multiple files.

The following file types are defined for health_checker:

• health_checker_etc_t — Set files with the health_checker_etc_t type, if you want to store health checker files in the /etc directories.
• health_checker_exec_t — Set files with the health_checker_exec_t type, if you want to transition an executable to the health_checker_t domain.
• health_checker_plugin_exec_t — Set files with the health_checker_plugin_exec_t type, if you want to transition an executable to the health_checker_plugin_t domain.

Paths:

/usr/libexec/health-checker/.*.sh, /usr/local/libexec/health-checker/.*.sh

• health_checker_tmp_t — Set files with the health_checker_tmp_t type, if you want to store health checker temporary files in the /tmp directories.
• health_checker_unit_file_t — Set files with the health_checker_unit_file_t type, if you want to treat the files as health checker unit content.
• health_checker_var_lib_t — Set files with the health_checker_var_lib_t type, if you want to store the health checker files under the /var/lib 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. no cap, this part matters 💖

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🛠️ COMMANDS 🛠️

• semanage fcontext can also be used to manipulate default file context mappings.
• 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 boolean can also be used to manipulate the booleans.
• system-config-selinux is a GUI tool available to customize SELinux policy settings.

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✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage .

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👀 SEE ALSO 👀

selinux(8), health_checker(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), health_checker_plugin_selinux(8), health_checker_plugin_selinux(8) — yep, that last one shows up twice on the page, so it shows up twice here too 💅

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💖 okay that’s the whole page, bestie. Source/version stamp: health_checker, date stamp: 26-10-06, and the manual name was health_ch...r_selinux(8). byeeee 🫶✨