Merge pull request #3499 from mtmail/add-data-warn-if-frozen

[nominatim.git] / docs / admin / Update.md

diff --git a/docs/admin/Update.md b/docs/admin/Update.md
index 49a4c4bfd1b56ab97fc5cc5126344a768eaaf047..5d1324d005b2452bc95d005b3a08f22930b186b6 100644 (file)
--- a/docs/admin/Update.md
+++ b/docs/admin/Update.md
@@ -59,47 +59,6 @@ imported multiple country extracts and want to keep them
 up-to-date, [Advanced installations section](Advanced-Installations.md)
 contains instructions to set up and update multiple country extracts.
 
 up-to-date, [Advanced installations section](Advanced-Installations.md)
 contains instructions to set up and update multiple country extracts.
 

-#### Continuous updates
-
-This is the easiest mode. Simply run the replication command without any
-parameters:
-
-    nominatim replication
-
-The update application keeps running forever and retrieves and applies
-new updates from the server as they are published.
-
-You can run this command as a simple systemd service. Create a service
-description like that in `/etc/systemd/system/nominatim-updates.service`:
-
-```
-[Unit]
-Description=Continuous updates of Nominatim
-
-[Service]
-WorkingDirectory=/srv/nominatim
-ExecStart=nominatim replication
-StandardOutput=append:/var/log/nominatim-updates.log
-StandardError=append:/var/log/nominatim-updates.error.log
-User=nominatim
-Group=nominatim
-Type=simple
-
-[Install]
-WantedBy=multi-user.target
-```
-
-Replace the `WorkingDirectory` with your project directory. Also adapt user
-and group names as required.
-
-Now activate the service and start the updates:
-
-```
-sudo systemctl daemon-reload
-sudo systemctl enable nominatim-updates
-sudo systemctl start nominatim-updates
-```
-

 #### One-time mode
 
 When the `--once` parameter is given, then Nominatim will download exactly one
 #### One-time mode
 
 When the `--once` parameter is given, then Nominatim will download exactly one


@@ -131,6 +90,63 @@ done
 
 A cron job then creates the file `/srv/nominatim/schedule-maintenance` once per night.
 
 
 A cron job then creates the file `/srv/nominatim/schedule-maintenance` once per night.
 

+##### One-time mode with systemd
+
+You can run the one-time mode with a systemd timer & service.
+
+Create a timer description like `/etc/systemd/system/nominatim-updates.timer`:
+
+```
+[Unit]
+Description=Timer to start updates of Nominatim
+
+[Timer]
+OnActiveSec=2
+OnUnitActiveSec=1min
+Unit=nominatim-updates.service
+
+[Install]
+WantedBy=multi-user.target
+```
+
+And then a similar service definition: `/etc/systemd/system/nominatim-updates.service`:
+
+```
+[Unit]
+Description=Single updates of Nominatim
+
+[Service]
+WorkingDirectory=/srv/nominatim
+ExecStart=nominatim replication --once
+StandardOutput=append:/var/log/nominatim-updates.log
+StandardError=append:/var/log/nominatim-updates.error.log
+User=nominatim
+Group=nominatim
+Type=simple
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Replace the `WorkingDirectory` with your project directory. Also adapt user and
+group names as required. `OnUnitActiveSec` defines how often the individual
+update command is run.
+
+Now activate the service and start the updates:
+
+```
+sudo systemctl daemon-reload
+sudo systemctl enable nominatim-updates.timer
+sudo systemctl start nominatim-updates.timer
+```
+
+You can stop future data updates, while allowing any current, in-progress
+update steps to finish, by running `sudo systemctl stop
+nominatim-updates.timer` and waiting until `nominatim-updates.service` isn't
+running (`sudo systemctl is-active nominatim-updates.service`). Current output
+from the update can be seen like above (`systemctl status
+nominatim-updates.service`).
+

 
 #### Catch-up mode
 
 
 #### Catch-up mode
 


@@ -158,9 +174,59 @@ replication catch-up at whatever interval you desire.
     a replication source with an update frequency that is an order of magnitude
     lower. For example, if you want to update once a day, use an hourly updated
     source. This makes sure that you don't miss an entire day of updates when
     a replication source with an update frequency that is an order of magnitude
     lower. For example, if you want to update once a day, use an hourly updated
     source. This makes sure that you don't miss an entire day of updates when

-    the source is unexpectely late to publish its update.
+    the source is unexpectedly late to publish its update.

 
     If you want to use the source with the same update frequency (e.g. a daily
     updated source with daily updates), use the
     continuous update mode. It ensures to re-request the newest update until it
     is published.
 
     If you want to use the source with the same update frequency (e.g. a daily
     updated source with daily updates), use the
     continuous update mode. It ensures to re-request the newest update until it
     is published.

+
+
+#### Continuous updates
+
+!!! danger
+    This mode is no longer recommended to use and will removed in future
+    releases. systemd is much better
+    suited for running regular updates. Please refer to the setup
+    instructions for running one-time mode with systemd above.
+
+This is the easiest mode. Simply run the replication command without any
+parameters:
+
+    nominatim replication
+
+The update application keeps running forever and retrieves and applies
+new updates from the server as they are published.
+
+You can run this command as a simple systemd service. Create a service
+description like that in `/etc/systemd/system/nominatim-updates.service`:
+
+```
+[Unit]
+Description=Continuous updates of Nominatim
+
+[Service]
+WorkingDirectory=/srv/nominatim
+ExecStart=nominatim replication
+StandardOutput=append:/var/log/nominatim-updates.log
+StandardError=append:/var/log/nominatim-updates.error.log
+User=nominatim
+Group=nominatim
+Type=simple
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Replace the `WorkingDirectory` with your project directory. Also adapt user
+and group names as required.
+
+Now activate the service and start the updates:
+
+```
+sudo systemctl daemon-reload
+sudo systemctl enable nominatim-updates
+sudo systemctl start nominatim-updates
+```
+
+