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# <a id="migrating-from-icinga-1x"></a> Migrating from Icinga 1.x
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## <a id="configuration-migration"></a> Configuration Migration
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The Icinga 2 configuration format introduces plenty of behavioral changes. In
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order to ease migration from Icinga 1.x,
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Icinga 2 ships its own config migration script.
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### <a id="configuration-migration-script"></a> Configuration Migration Script
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Due to the complexity of the Icinga 1.x configuration format the migration
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script might not currently work for all use cases.
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The config migration script provides support for basic Icinga 1.x
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configuration format migration to native Icinga 2 configuration syntax.
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The migration script tries to preserve your existing template structure and
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adds new templates where appropriate. However, the original file structure is
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not preserved.
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The migration script uses templates from the Icinga Template Library where
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possible.
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> **Note**
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>
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> Please check the provided README file for additional notes and possible
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> caveats.
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# mkdir /etc/icinga2/conf.d/migrate
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# /usr/bin/icinga2-migrate-config -c /etc/icinga/icinga.cfg -o /etc/icinga2/conf.d/migrate
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### <a id="manual-config-migration"></a> Manual Config Migration
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For a long-term migration of your configuration you should consider re-creating
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your configuration based on the Icinga 2 proposed way of doing configuration right.
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Please read the [next chapter](#differences-1x-2) to get an idea about the differences between 1.x and 2.
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