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Merge pull request #199 from wabuMike/master

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Added a basic guide on migrating to another server
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Slavi Pantaleev 2019-06-12 09:38:17 +03:00 committed by GitHub
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docs/installing.md
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@ -39,3 +39,4 @@ Now that the services are running, you might want to:
- or [set up the Dimension Integrations Manager](configuring-playbook-dimension.md) - or [set up the Dimension Integrations Manager](configuring-playbook-dimension.md)
- or [check if services work](maintenance-checking-services.md) - or [check if services work](maintenance-checking-services.md)
- or learn how to [upgrade your services when new versions are released](maintenance-upgrading-services.md) - or learn how to [upgrade your services when new versions are released](maintenance-upgrading-services.md)
- or learn how to [migrate to another server](maintenance-migrating.md)

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# Migrating to new server
1. Prepare by lowering DNS TTL for your domains (`matrix.DOMAIN`, etc.), so that DNS record changes (step 4 below) would happen faster, leading ot less downtime
2. Stop all services on the old server and make sure they won't be starting again. Execute this on the old server: `systemctl disable --now matrix*`
3. Copy directory `/matrix` from the old server to the new server. Make sure to preserve ownership and permissions (use `cp -p` or `rsync -ar`)!
4. Make sure your DNS records are adjusted to point to the new server's IP address
5. Remove old server from the `inventory/hosts` file and add new server.
6. Run `ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start`. This will create the matrix user and group and start all services on the new server