Cardano Node 1.26.2

@LaurenceIO LaurenceIO released this 13 hours ago

This point release is a recommended upgrade for all stake pool operators. It is not required for relays or other passive nodes. It ensures that block producing nodes do not unnecessarily re-evaluate the stake distribution at the epoch boundary.


  • Do not force the evaluation of the Mark snapshot - leave this as a thunk (#2614)

Fixed Issues

  • Stake pools unnecessarily evaluate the stake distribution at the epoch boundary (#2616)

How to update to 1.26.2

bofore to start it’s better also to update the server

sudo apt-get update
sudo apt-get upgrade
sudo reboot (not mandatory, the reboot was performed last update)

UPDATE STEPS to 1.26.2

Few recommendation before to start:

  • perform a snapshot for server (if u have this option offered by your provider) before to start the update

  • update the Relay first

  • STEP 1 - building the node

stop the node :

sudo systemctl stop cnode

build the node

cd ~/git
sudo rm -R cardano-node
git clone https://github.com/input-output-hk/cardano-node 
cd cardano-node

git fetch --tags --all
git checkout 1.26.2

echo -e "package cardano-crypto-praos\n  flags: -external-libsodium-vrf" > cabal.project.local

after 30-40 minutes:
/opt/cardano/cnode/scripts$ cardano-node --version
cardano-node 1.26.2 - linux-x86_64 - ghc-8.10
git rev 3531289c9f79eab7ac5d3272ce6e6821504fec4c
/opt/cardano/cnode/scripts$ cardano-cli --version
cardano-cli 1.26.2 - linux-x86_64 - ghc-8.10
git rev 3531289c9f79eab7ac5d3272ce6e6821504fec4c

now you can start the node

sudo systemctl restart cnode
#check the status
sudo systemctl status cnode

start glive let it sync and u should see:


Thank you,


hey you :slight_smile:

let us all be upgraded ! ! !


1 Like

great job as usual Alex,
just extra info, based on my setup
i need also this 2 commands to find the new version folder.

cp -p dist-newstyle/build/x86_64-linux/ghc-8.10.2/cardano-node-1.26.2/x/cardano-node/build/cardano-node/cardano-node ~/.local/bin/
cp -p dist-newstyle/build/x86_64-linux/ghc-8.10.2/cardano-cli-1.26.2/x/cardano-cli/build/cardano-cli/cardano-cli ~/.local/bin/

yeah, I don’t know why… mine is ok, don’t need for the commands

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What has changed in 1.26.2?

To fix what happened at the last epoch transition

IOG release notes: Releases · input-output-hk/cardano-node · GitHub

Some good videos on what happened

The Cardano Network stopped producing blocks!? Let's take a look at some graphs! - YouTube

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See comment below/above (i meant to post it as a reply)

Thank you Alex

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Thanks. Makes sense.

If I have compiled the binaries from the last update and I only want to replace the cardano-cli and cardano-node binaries. where should i put the new files?

Should be on cabal folder

Hi Alex, we did this process on the BP node but it is still showing as (Relay - Mainnet). The needful files in my priv folder are intact as they were during 1.25.1. Still we are unable to start the Core Node as the core node. Any workaround for this?

how is it in gliveview, does it started?


No it is still “starting…” . Sorry i am on other computer otherwise i would have given you a snapshot.

aa, if it’s saying starting. .it’s fine, it need to re-sync all the DB so it will take a while…

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OK. I will let you know when it starts and after it starts if it shows correctly as “Core”. Thanks a lot man! We all really like your support :slight_smile:

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looks good but I need to binaries, I can’t compile. lets face it, compiling something from the scratch? it makes sense to you? I don’t think so. software can be precompiled and put to run.

After syncing it is back as Core and is showing Properly as Core - Mainnet.

1 Like

thanks so very much!!! @Alexd1985


You are welcome!