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60 lines
2.8 KiB
ReStructuredText
60 lines
2.8 KiB
ReStructuredText
.. _blockchain-copy:
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====================
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Blockchain Migration
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====================
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.. contents::
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:depth: 2
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:local:
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.. warning:: This is an advanced feature and should be used with caution. Start9 is not responsible for any damage you might cause through SSH access.
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If you have already synced the Bitcoin blockchain to the tip on one Embassy, and would like to skip IBD on another Embassy, follow this guide.
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.. note:: The following guide requires that you have already :ref:`setup SSH on both Embassies<ssh>`.
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In this guide, we will refer to your synced Embassy as embassy-AAAAAAA.local and the Embassy with no Bitcoin synced as embassy-BBBBBBB.local. Of course, please replace AAAAAAA and BBBBBBB with your appropriate Embassies' names.
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**Install but don't start Bitcoin Core on the blockchain-less Embassy**
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#. Log into `https://embassy-BBBBBBB.local` and install Bitcoin Core (**Marketplace > Bitcoin > Bitcoin Core > Install**). Do *NOT* yet **CONFIGURE** or **START** Bitcoin Core.
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**Prep your Embassy with the synced blockchain**
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#. Stop the Bitcoin Core service on `https://embassy-AAAAAAA.local` (**Services > Bitcoin Core > Stop**)
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#. :ref:`Open an ssh session <connecting-via-ssh>` to embassy-AAAAAAAA.local
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#. Once at the shell, perform the following commands
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.. code-block:: bash
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sudo -i
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mkdir -m 0700 -p .ssh
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ssh-keygen -t ed25519 -N '' -f .ssh/embassy2.key
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chmod 600 .ssh/embassy2.key*
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cat .ssh/embassy2.key.pub
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#. Copy the output from the cat command into embassy-BBBBBBB's **Embassy > SSH > Add New Key** text field:
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.. figure:: /_static/images/walkthrough/ssh_key_add.jpg
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#. Back on the shell of embassy-AAAAAAA.local, do the following (don't forget to replace embassy-BBBBBBB.local in the rsync command before you perform it):
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.. code-block:: bash
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cd /embassy-data/package-data/volumes/bitcoind/data/main/
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rsync -e "ssh -i ~/.ssh/embassy2.key" -povgr --append-verify --rsync-path="sudo mkdir -p /embassy-data/package-data/volumes/bitcoind/data/main ; sudo rsync" ./{blocks,chainstate} start9@embassy-BBBBBBB.local:/embassy-data/package-data/volumes/bitcoind/data/main/
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#. Wait some hours until the copy is complete. On a gigabit network, the limiting factor will be the write speed of your SSD on the receiving Embassy. When it is complete, clean up a bit:
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.. code-block:: bash
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rm .ssh/embassy2.key*
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exit
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#. Switch back to `https://embassy-BBBBBBB.local`, selecting **Services > Bitcoin Core**, **CONFIGURE**, configure it as desired, **SAVE** and then **START** your Bitcoin Core service. You should see it begin at 99%+ pre-synced.
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#. You can now restart your Bitcoin Core service on `https://embassy-AAAAAAA.local` (**Services > Bitcoin Core > Start**)
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.. _bitcoin-service: |