laconicd/testnet/validator upgrade 0.6.0 - 0.7.0.md

Validator Upgrade Guide for laconic_81337-5 Testnet v0.6.0 -> v0.7.0

This guide assumes you have followed the instructions to crete a systemd service or docker container validator node v0.6.0 and you perform the upgrade on a machine running v0.6.0

It is highly recommended to make the backup of your datadir after you stop v0.6.0 and before you start v0.7.0. Unless you changed your datadir, it should be located in ~/.laconicd

Systemd service

Skip this section if you use docker

This is very similar to building v0.6.0. We keep v 0.6.0 running until v0.7.0 is built and only after the successful build we should replace 0.6.0 binary with v0.7.0. This is to avoid jailing your validator for long downtime. The general upgrade plan is the following:

1. Install Go v1.19 (we used 1.18 for v0.6.0)
2. Remove old copy of the github repository and build directory
3. Download the latest laconicd repository and checkout v0.7.0
4. Build laconicd binary (but not install in this moment)
5. Stop laconicd systemd service
6. Install recently built new version of laconicd
7. Start laconicd service

You have ~10 minutes after step 5 to complete steps 6 and 7 before your validator is jailed for downtime. Getting jailed for downtime is not a disaster, however would require manual unjailing.

Install Go 1.19

# Update Ubuntu
sudo apt update
sudo apt upgrade -y

# Install required software packages
sudo apt install git curl build-essential make jq -y

# Remove any existing installation of `go`
sudo rm -rf /usr/local/go

# Install Go version 1.19.5
curl https://dl.google.com/go/go1.19.5.linux-amd64.tar.gz | sudo tar -C/usr/local -zxvf -

Check the version of go installed

go version

# Should return something like: go version go1.19.5 linux/amd64

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Remove old copy of laconicd build

# Remove the previous build directory
cd ~
rm -rf laconicd

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Download laconicd repository

git clone https://github.com/cerc-io/laconicd.git
cd laconicd

# Checkout main branch
git fetch --all
git checkout v0.7.0

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Build the new version of laconicd

# Build laconic (but not install at this moment)
make VERSION=v0.7.0 build

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Stop laconicd systemd service

sudo systemctl stop laconicd

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Install new laconicd version

make VERSION=v0.7.0 install

Verify your installation

laconicd version

This should return 0.7.0

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Start laconicd systemd service

sudo systemctl start laconicd

Verify that the node joined the network and produces new blocks

journalctl -f -u laconicd

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Docker container

Upgrade plan:

1. Stop running v0.6.0 container
2. Delete v0.6.0 container
3. Create v0.7.0 container
4. Start v0.7.0 container

Stop running v0.6.0 container

docker stop laconic-testnet-5

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Delete v0.6.0 container

docker rm laconic-testnet-5

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Create v0.7.0 container

docker create --name laconic-testnet-5 \
--restart always \
-v ~/.laconicd:/root/.laconicd \
-p 26656:26656 \
-p 127.0.0.1:26657:26657 \
-p 127.0.0.1:26660:26660 \
git.vdb.to/cerc-io/laconicd/laconicd:v0.7.0 \
laconicd start --gql-playground --gql-server --log_level=warn

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Start v0.7.0 container

docker start laconic-testnet-5

Verify that the node joined the network and produces new blocks

docker logs -f laconic-testnet-5

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