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I have 3 nodes, all in Ubuntu 16.04 that I have to upgrade.

To install the node, I downloaded the latest stable version from https://www.parity.io/

and then did:

wget wget [LINK_FROM_PARITY]
sudo dpkg -i [FILE_DOWNLOADED_FROM_PARITY]

to install it.

What's the best way to upgrade my nodes making sure I don't lose the content of the chain, the enode, the chain config and the peer list?

Does dpkg have an upgrade function or something like that?

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  • Is there a reason you chose to use dpkg over apt as it's much more lower level. Another reason is apt will look for the newest version, ignoring older local versions as well. – Vignesh Karthikeyan Jun 14 '18 at 18:19
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    @Meshugah The tutorial I followed used it instead of apt. – mdlapla Jun 18 '18 at 9:23
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Yes it does, Another sudo dpkg -i [FILENAME] should do it as stated here

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