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Merge pull request #162784 from amarshall/prom-svc-harden

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nixos/prometheus: Harden systemd service
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Maximilian Bosch 2022-11-07 15:03:43 +01:00 committed by GitHub
commit 58227c4de0
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nixos/modules/services/monitoring/prometheus/default.nix
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@ -1796,6 +1796,33 @@ in
WorkingDirectory = workingDir;
StateDirectory = cfg.stateDir;
StateDirectoryMode = "0700";
# Hardening
AmbientCapabilities = lib.mkIf (cfg.port < 1024) [ "CAP_NET_BIND_SERVICE" ];
CapabilityBoundingSet = if (cfg.port < 1024) then [ "CAP_NET_BIND_SERVICE" ] else [ "" ];
DeviceAllow = [ "/dev/null rw" ];
DevicePolicy = "strict";
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateTmp = true;
PrivateUsers = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProtectSystem = "full";
RemoveIPC = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_UNIX" ];
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = [ "@system-service" "~@privileged" "~@resources" ];
};
};
# prometheus-config-reload will activate after prometheus. However, what we