This guide assumes you've followed my other guide, where you compile Bitcoin Core from source. These steps will allow you to upgrade a running Bitcoin Core node to the latest version.
Stop current Bitcoin Core node
First, stop the running version of the Bitcoin Core daemon.
$ su - bitcoin $ bitcoin-cli stop Bitcoin server stopping
Check to make sure your node is stopped.
$ bitcoin-cli status error: Could not connect to the server 127.0.0.1:8332
Once that's done, download & compile the new version.
Install the latest version of Bitcoin Core
To do so, you can follow all other steps to self-compile Bitcoin Core.
In those steps, there's a part where you do a
git checkout to a specific version. Change that to refer to the latest release. In this example, we'll upgrade to
$ git clone https://github.com/bitcoin/bitcoin.git $ cd bitcoin $ git checkout v0.18.0
And compile Bitcoin Core using the same steps as before.
$ ./autogen.sh $ ./configure $ make -j $(nproc)
Once done, you have the latest version of Bitcoin Core.
Start the Bitcoin Core daemon
Start it again as normal;
$ bitcoind --version Bitcoin Core Daemon version v0.18.0 $ bitcoind -daemon Bitcoin server starting
Check the logs to make sure everything is OK.
$ tail -f ~/.bitcoin/debug.log Bitcoin Core version v0.18.0 (release build) Assuming ancestors of block 0000000000000000000f1c54590ee18d15ec70e68c8cd4cfbadb1b4f11697eee have valid signatures. Setting nMinimumChainWork=0000000000000000000000000000000000000000051dc8b82f450202ecb3d471 Using the 'sse4(1way),sse41(4way),avx2(8way)' SHA256 implementation Using RdSeed as additional entropy source Using RdRand as an additional entropy source Default data directory /home/bitcoin/.bitcoin ...
And you're now running the latest version.