Add support for service reload and sync service file #2102
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WalkthroughThe changes introduce enhancements to the Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant SystemD
participant Headscale
User->>SystemD: Sends reload signal (HUP)
SystemD->>Headscale: Executes ExecReload command
Headscale-->>SystemD: Reloads configuration
SystemD-->>User: Acknowledges reload completion
Assessment against linked issues
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Files selected for processing (2)
- docs/packaging/headscale.systemd.service (1 hunks)
- docs/running-headscale-linux-manual.md (1 hunks)
Additional comments not posted (16)
docs/packaging/headscale.systemd.service (1)
12-12: LGTM!The
ExecReloaddirective is correctly implemented and aligns with the PR objective of enabling the reloading of Access Control Lists (ACLs) via the commandsystemctl reload headscale.Sending the HUP signal to the main process is a common pattern for reloading the configuration of a service without needing to stop and restart it entirely. The command uses the correct signal (HUP) and the correct variable ($MAINPID) to identify the main process.
docs/running-headscale-linux-manual.md (15)
123-123: Approved: The updated service description clarifies headscale's role.The change from "headscale controller" to "headscale coordination server for Tailscale" provides a more accurate description of headscale's purpose.
124-124: Approved: The newX-Restart-Triggersdirective improves service management.The addition of the
X-Restart-Triggersdirective, pointing to the configuration file, enhances the service's restart behaviour based on configuration changes. This is a useful feature for managing the headscale service.
131-131: Approved: The newExecReloaddirective enables graceful service reloads.The addition of the
ExecReloaddirective, using thekillcommand to send theHUPsignal to the main process, allows for graceful reloading of the headscale service. This is a valuable feature for managing the service without requiring a full restart.
138-138: Verify the addition ofCAP_CHOWNtoAmbientCapabilities.The
AmbientCapabilitiesdirective has been updated to includeCAP_CHOWN, indicating that the service can now change file ownership. Please verify that this capability is necessary for the service's operation and does not introduce any unintended security risks.
139-139: Approved: The newCapabilityBoundingSetdirective enhances security.The addition of the
CapabilityBoundingSetdirective, specifyingCAP_NET_BIND_SERVICEandCAP_CHOWN, limits the service's capabilities to only those required. This helps to reduce the potential attack surface and enhance the service's security posture.
140-140: Approved: The newLockPersonalitydirective enhances security.The addition of the
LockPersonalitydirective, set totrue, prevents the service from changing its personality (execution domain). This is a security enhancement that restricts the service's ability to switch between different execution domains, reducing the risk of privilege escalation.
141-141: Approved: The newNoNewPrivilegesdirective enhances security.The addition of the
NoNewPrivilegesdirective, set totrue, prevents the service and its child processes from gaining new privileges throughexecve(). This is a security enhancement that limits the service's ability to escalate its privileges, reducing the risk of unauthorized access or exploitation.
142-142: Approved: The newPrivateDevicesdirective enhances security.The addition of the
PrivateDevicesdirective, set totrue, creates a private/devmount for the service and only adds API pseudo devices. This is a security enhancement that prevents the service from accessing physical devices, reducing the risk of unauthorized access or exploitation.
143-143: Approved: The newPrivateMountsdirective enhances security.The addition of the
PrivateMountsdirective, set totrue, creates a private mount namespace for the service, preventing it from accessing system mount points. This is a security enhancement that isolates the service's mount namespace, reducing the risk of unauthorized access or exploitation.
144-144: Approved: The newPrivateTmpdirective enhances security.The addition of the
PrivateTmpdirective, set totrue, mounts a private/tmpdirectory for the service, preventing it from accessing the system's temporary files. This is a security enhancement that isolates the service's temporary files, reducing the risk of unauthorized access or exploitation.
145-145: Approved: The newProcSubsetdirective enhances security.The addition of the
ProcSubsetdirective, set topid, mounts a subset of/procthat only contains thepiddirectories for the service. This is a security enhancement that limits the service's access to process information, reducing the risk of unauthorized access or exploitation.
146-146: Approved: The newProtectClockdirective enhances security.The addition of the
ProtectClockdirective, set totrue, makes the service unable to change the system clock. This is a security enhancement that prevents the service from tampering with the system time, ensuring the integrity of time-based operations.
147-147: Approved: The newProtectControlGroupsdirective enhances security.The addition of the
ProtectControlGroupsdirective, set totrue, makes the service unable to modify the control group file system. This is a security enhancement that prevents the service from tampering with the system's resource control and allocation mechanisms, ensuring the stability and integrity of the system.
148-148: Approved: The newProtectHomedirective enhances security.The addition of the
ProtectHomedirective, set totrue, makes the service unable to access home directories of users. This is a security enhancement that prevents the service from accessing potentially sensitive user data, reducing the risk of unauthorized access or data breaches.
149-149: Approved: The newProtectHostnamedirective enhances security.The addition of the
ProtectHostnamedirective, set totrue, makes the service unable to change the system hostname. This is a security enhancement that prevents the service from tampering with the system's identity, ensuring the stability and integrity of the system.
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Alternatively, the |
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Yes, linking it sounds way better than attempting to keep them in sync. |
* Copy the systemd.service file to the manual linux docs and adjust the path to the headscale binary to match with the previous documentation blocks. Unfortunately, there seems to be no easy way to include a file in mkdocs. * Remove a redundant "deprecation" block. The beginning of the documentation already states that. * Add `ExecReload` to the systemd.service file. Fixes: juanfont#2016
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Files selected for processing (4)
- docs/packaging/headscale.systemd.service (1 hunks)
- docs/running-headscale-linux-manual.md (4 hunks)
- docs/running-headscale-linux.md (1 hunks)
- integration/dns_test.go (1 hunks)
Files skipped from review due to trivial changes (3)
- docs/running-headscale-linux-manual.md
- docs/running-headscale-linux.md
- integration/dns_test.go
Additional comments not posted (1)
docs/packaging/headscale.systemd.service (1)
12-12: Approve the addition of theExecReloaddirective.The
ExecReloaddirective is correctly implemented using/usr/bin/kill -HUP $MAINPID. This allows the service to reload its configuration dynamically, aligning with the objectives of PR and issue #2016.Please ensure that the Headscale application is designed to handle the HUP signal appropriately, as this is crucial for the directive to function as intended.
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Thank you, this is very helpful! |
ExecReloadto the systemd.service file.Fixes #2016
Summary by CodeRabbit
New Features
ExecReloaddirective for graceful configuration reloads.Documentation
headscaleon Linux, encouraging the use of pre-packaged service files.