2018-10-17 08:13:36 -04:00
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IMPORTANT: If you are upgrading from a version prior to 6.3 and use {xpack}
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then you must remove the {xpack} plugin before upgrading with
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`bin/elasticsearch-plugin remove x-pack`. As of 6.3, {xpack} is included in
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the default distribution so make sure to upgrade to that one. If you upgrade
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without removing the {xpack} plugin first the node will fail to start. If you
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did not remove the {xpack} plugin and the node fails to start then you must
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downgrade to your previous version, remove {xpack}, and then upgrade again.
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In general downgrading is not supported but in this particular case it is.
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