fix(flomni): RT machine renamed mpc2844 -> mpc-flomni

PSI DHCP updated the DNS on 2026-11-03: mpc-flomni.psi.ch -> 129.129.98.71,
mpc2844.psi.ch no longer resolves. Device configs (ptycho_flomni, simulated),
rt_flomni/rt_omny ophyd, webhmi_client default host, sim devices, e2e harness, docs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

csaxs_bec/bec_ipython_client/plugins/flomni/docs/local_contact_only-howto_calibrate_the_fzp_scanner.md

@@ -77,10 +77,10 @@ Naming: "move ahead" in the text above (sample PIDs `FAST_FZP_PID_LOOP(0)` < 0)
 beyond its centre during the exposure, on the side that gives it more stroke for the next step. It is not a
 "pre-move" of the FZP to the next point (that is `TargetSelect` `use_final` 1, see below).
 
-## Update 2026-10-20 (flOMNI loop on PREEMPT_RT, mpc2844)
+## Update 2026-10-20 (flOMNI loop on PREEMPT_RT, mpc-flomni)
 
 The loop has new modules since the text above was written (flOMNI `FeedbackLoop/tuning_guide.md`,
-`feedback_report.md` 5.6, 6n, 6o, 6q). Parameters are changed in the web HMI (`http://mpc2844:8080`, tab
+`feedback_report.md` 5.6, 6n, 6o, 6q). Parameters are changed in the web HMI (`http://mpc-flomni:8080`, tab
 Parameters) instead of OrchestraHMI. `i` = x or y, as above. Module names now: `PID_x`, `PID_y` (sample stage),
 `PID_x_fzp`, `PID_y_fzp` (FZP scanner), `AnalogInput_6289` (was `AnalogInput_6259`).
 

csaxs_bec/bec_ipython_client/plugins/flomni/docs/local_contact_only-howto_limit_the_fzp_scanner_range.md

@@ -16,7 +16,7 @@ in PID_ _FZP
 limit the analog output LB and UB
 ```
 
-## Update 2026-10-20 (flOMNI loop on PREEMPT_RT, mpc2844)
+## Update 2026-10-20 (flOMNI loop on PREEMPT_RT, mpc-flomni)
 
 The limited range is the present operating state: `PID_x_fzp` / `PID_y_fzp` `Ub` / `Lb` = ±1.5 V because the cap
 sensors are calibrated over about ±2 V only (flOMNI `feedback_report.md` 6n). FZP ≈ 0.13 µm/V in x, ≈ 0.05 µm/V in y,

csaxs_bec/bec_ipython_client/plugins/flomni/docs/local_contact_only-realtime_system.md

@@ -95,7 +95,7 @@ as default or inconsistent, violated error rules, the definition with its sha1,
 ## Connection
 
 `flomni.rt_settings` sends its requests through the device `flomni_loop_settings` (device server). The device
-talks to the web HMI on the loop machine (`http://mpc2844:8080`, REST `/api/settings`; port 80 as fallback) with the
+talks to the web HMI on the loop machine (`http://mpc-flomni:8080`, REST `/api/settings`; port 80 as fallback) with the
 API token in its device config (`ptycho_flomni.yaml`, `token:`; the line of `~/loop-data/webhmi/api_token` on
-mpc2844). Without that device (e.g. a simulated config) the client talks to the web HMI directly with
+mpc-flomni). Without that device (e.g. a simulated config) the client talks to the web HMI directly with
 `~/.flomni_webhmi_token`. The web HMI tab *Loop settings* shows and changes the same settings with the same rules.

csaxs_bec/device_configs/ptycho_flomni.yaml

@@ -7,7 +7,7 @@ feyex:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: D
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -30
     - -1
@@ -32,7 +32,7 @@ feyey:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: E
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -1
     - -10
@@ -53,7 +53,7 @@ fheater:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -15
     - 0
@@ -76,7 +76,7 @@ foptx:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -17
     - -12
@@ -115,7 +115,7 @@ fopty:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: F
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 4
@@ -147,7 +147,7 @@ foptz:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 27
@@ -168,7 +168,7 @@ fsamroy:
   deviceClass: csaxs_bec.devices.omny.galil.fupr_ophyd.FuprGalilMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -5
     - 365
@@ -186,7 +186,7 @@ fsamx:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: E
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -162
     - 0
@@ -206,7 +206,7 @@ fsamy:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: F
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 2
     - 3.8
@@ -226,7 +226,7 @@ ftracky:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: H
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 2.2
     - 2.8
@@ -244,7 +244,7 @@ ftrackz:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: G
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 4.5
     - 5.5
@@ -262,7 +262,7 @@ ftransx:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 50
@@ -280,7 +280,7 @@ ftransy:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -100
     - 0
@@ -300,7 +300,7 @@ ftransz:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 145
@@ -318,7 +318,7 @@ ftray:
   deviceClass: csaxs_bec.devices.omny.galil.fgalil_ophyd.FlomniGalilMotor
   deviceConfig:
     axis_Id: D
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -200
     - 0
@@ -357,7 +357,7 @@ fosax:
   deviceClass: csaxs_bec.devices.smaract.smaract_ophyd.SmaractMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 10.2
     - 10.6
@@ -395,7 +395,7 @@ fosay:
   deviceClass: csaxs_bec.devices.smaract.smaract_ophyd.SmaractMotor
   deviceConfig:
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -3.1
     - -2.9
@@ -426,7 +426,7 @@ fosaz:
   deviceClass: csaxs_bec.devices.smaract.smaract_ophyd.SmaractMotor
   deviceConfig:
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -6
     - -4
@@ -469,7 +469,7 @@ rtx:
     - -200
     - 200
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     sign: 1
   enabled: true
@@ -491,7 +491,7 @@ rty:
     - -100
     - 100
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     sign: 1
   enabled: true
@@ -511,7 +511,7 @@ rtz:
     - -100
     - 100
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     sign: 1
   enabled: true
@@ -525,7 +525,7 @@ rtz:
 rt_positions:
   deviceClass: csaxs_bec.devices.omny.rt.rt_flomni_ophyd.RtFlomniFlyer
   deviceConfig:
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
   readoutPriority: async
   connectionTimeout: 20
@@ -621,13 +621,13 @@ flomni_temphum:
 # The loop settings (FZP, trigger, tracker; flOMNI FeedbackLoop/loopsettings) stored with every scan: read from the
 # web HMI on the loop machine at the start of each scan (baseline). Web HMI down: available = 0, the scan continues.
 # The user commands flomni.rt_settings go through this device (RPC), so the token is needed only here.
-# token: the web HMI API token (~/loop-data/webhmi/api_token on mpc2844; behind the beamline firewall, Mirko
+# token: the web HMI API token (~/loop-data/webhmi/api_token on mpc-flomni; behind the beamline firewall, Mirko
 # 2026-10-23). When empty, token_file (on the machine of the device server) is used.
 flomni_loop_settings:
   description: flOMNI real-time loop settings (web HMI loop settings, snapshot at scan start)
   deviceClass: csaxs_bec.devices.omny.flomni_loop_settings.FlomniLoopSettings
   deviceConfig:
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     token: "3CcGHMdz16G7zuC6iPHEoZPWvKDY1HkCZnTlP1msZbg"
     token_file: ~/.flomni_webhmi_token
     timeout: 2.0

csaxs_bec/device_configs/simulated_omny/simulated_bl_simulated_flomni.yaml

@@ -39,7 +39,7 @@ feyex:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: D
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -30
     - -1
@@ -66,7 +66,7 @@ feyey:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: E
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -1
     - -10
@@ -90,7 +90,7 @@ fheater:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -15
     - 0
@@ -115,7 +115,7 @@ foptx:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -17
     - -12
@@ -145,7 +145,7 @@ fopty:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: F
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 4
@@ -171,7 +171,7 @@ foptz:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 27
@@ -195,7 +195,7 @@ fsamroy:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFuprGalilMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -5
     - 365
@@ -216,7 +216,7 @@ fsamx:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: E
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -162
     - 0
@@ -240,7 +240,7 @@ fsamy:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: F
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 2
     - 3.8
@@ -264,7 +264,7 @@ ftracky:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: H
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 2.2
     - 2.8
@@ -286,7 +286,7 @@ ftrackz:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: G
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 4.5
     - 5.5
@@ -308,7 +308,7 @@ ftransx:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 50
@@ -330,7 +330,7 @@ ftransy:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -100
     - 0
@@ -356,7 +356,7 @@ ftransz:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 0
     - 145
@@ -378,7 +378,7 @@ ftray:
   deviceClass: csaxs_bec.devices.sim.sim_galil.SimFlomniGalilMotor
   deviceConfig:
     axis_Id: D
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -200
     - 0
@@ -406,7 +406,7 @@ fosax:
   deviceClass: csaxs_bec.devices.sim.sim_smaract.SimSmaractMotor
   deviceConfig:
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - 10.2
     - 10.6
@@ -431,7 +431,7 @@ fosay:
   deviceClass: csaxs_bec.devices.sim.sim_smaract.SimSmaractMotor
   deviceConfig:
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -3.1
     - -2.9
@@ -455,7 +455,7 @@ fosaz:
   deviceClass: csaxs_bec.devices.sim.sim_smaract.SimSmaractMotor
   deviceConfig:
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     limits:
     - -6
     - -4
@@ -487,7 +487,7 @@ rtx:
     - -200
     - 200
     axis_Id: A
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     sign: 1
   enabled: true
@@ -510,7 +510,7 @@ rty:
     - -100
     - 100
     axis_Id: B
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     sign: 1
   enabled: true
@@ -531,7 +531,7 @@ rtz:
     - -100
     - 100
     axis_Id: C
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     sign: 1
   enabled: true
@@ -545,7 +545,7 @@ rtz:
 rt_positions:
   deviceClass: csaxs_bec.devices.sim.sim_rt_flomni.SimRtFlomniFlyer
   deviceConfig:
-    host: mpc2844.psi.ch
+    host: mpc-flomni.psi.ch
     port: 2222
     # time per scan position; determines simulated scan duration
     sim_point_dwell_s: 0.02

csaxs_bec/devices/omny/rt/rt_flomni_ophyd.py

@@ -596,7 +596,7 @@ class RtFlomniMotor(Device, PositionerBase):
         read_attrs=None,
         configuration_attrs=None,
         parent=None,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=2222,
         sign=1,
         socket_cls=SocketIO,
@@ -807,7 +807,7 @@ class RtFlomniFlyer(Device):
         read_attrs=None,
         configuration_attrs=None,
         parent=None,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=2222,
         socket_cls=SocketIO,
         device_manager=None,
@@ -988,7 +988,7 @@ class RtFlomniFlyer(Device):
 
 if __name__ == "__main__":
     rtcontroller = RtFlomniController(
-        socket_cls=SocketIO, socket_host="mpc2844.psi.ch", socket_port=2222, device_manager=None
+        socket_cls=SocketIO, socket_host="mpc-flomni.psi.ch", socket_port=2222, device_manager=None
     )
     rtcontroller.on()
     rtcontroller.laser_tracker_on()

csaxs_bec/devices/omny/rt/rt_omny_ophyd.py

@@ -1352,7 +1352,7 @@ class RtOMNYFlyer(Device):
 
 if __name__ == "__main__":
     rtcontroller = RtOMNYController(
-        socket_cls=SocketIO, socket_host="mpc2844.psi.ch", socket_port=2222, device_manager=None
+        socket_cls=SocketIO, socket_host="mpc-flomni.psi.ch", socket_port=2222, device_manager=None
     )
     rtcontroller.on()
     rtcontroller.laser_tracker_on()

csaxs_bec/devices/omny/webhmi_client.py

@@ -5,7 +5,7 @@ and the baseline device FlomniLoopSettings (devices/omny/flomni_loop_settings.py
 same way. Standard library only (runs in the IPython client and in the device server).
 
 URL: explicit `url`, else env FLOMNI_WEBHMI_URL, else http://<host>:8080 with <host> = `host`, else the host of the
-rtx device config, else mpc2844.psi.ch. With the default URL a request that cannot reach port 8080 is repeated on
+rtx device config, else mpc-flomni.psi.ch. With the default URL a request that cannot reach port 8080 is repeated on
 port 80 of the same host (nftables redirect 80 -> 8080 on the loop machine, the port the PSI gateway passes); that URL
 is then kept. An explicit URL gets no fallback.
 
@@ -21,7 +21,7 @@ import urllib.request
 
 DEFAULT_TOKEN_FILE = "~/.flomni_webhmi_token"
 DEFAULT_PORT = 8080
-DEFAULT_HOST = "mpc2844.psi.ch"
+DEFAULT_HOST = "mpc-flomni.psi.ch"
 
 
 class WebHmiError(Exception):

csaxs_bec/devices/sim/sim_galil.py

@@ -708,7 +708,7 @@ class SimFlomniGalilMotor(FlomniGalilMotor):
         prefix="",
         *,
         name,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=8081,
         limits=None,
         sign=1,
@@ -761,7 +761,7 @@ class SimFuprGalilMotor(FuprGalilMotor):
         prefix="",
         *,
         name,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=8084,
         limits=None,
         sign=1,

csaxs_bec/devices/sim/sim_rt_flomni.py

@@ -253,7 +253,7 @@ class SimRtFlomniMotor(RtFlomniMotor):
         prefix="",
         *,
         name,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=2222,
         limits=None,
         sign=1,
@@ -290,7 +290,7 @@ class SimRtFlomniFlyer(RtFlomniFlyer):
         prefix="",
         *,
         name,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=2222,
         device_manager=None,
         sim_point_dwell_s=None,

csaxs_bec/devices/sim/sim_smaract.py

@@ -204,7 +204,7 @@ class SimSmaractMotor(SmaractMotor):
         prefix="",
         *,
         name,
-        host="mpc2844.psi.ch",
+        host="mpc-flomni.psi.ch",
         port=3334,
         limits=None,
         sign=1,

omny_e2e_tests/sim_flomni_harness.py

@@ -77,7 +77,7 @@ def main():  # noqa: C901
     from csaxs_bec.devices.sim.sim_smaract import SimSmaractMotor
 
     dm = FakeDeviceManager()
-    host = "mpc2844.psi.ch"
+    host = "mpc-flomni.psi.ch"
 
     # --- instantiate the simulated endstation -----------------------------------
     fsamx = dm.add(