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Description

This proposal is required to adopt version 1.6.7 which introduces fixes and improvements to the Cosmos Millions protocol.

Full PR here lum-network/chain#77

How to upgrade

  • This upgrade is scheduled for Thursday, May 16th around 15:00 UTC.
  • The exact target block is 13241000
  • Upon reaching this block you will see a message ERR UPGRADE "v1.6.7" NEEDED at height: 13241000 and ERR CONSENSUS FAILURE!!!
  • WARNING: Upgrading prior to this block and this message WILL literally make your node good for a full hard reset, you really don't want to do that
  • Once you receive this message you must upgrade you node:
    • git pull
    • git checkout v1.6.7
    • make install
    • lumd version
      • 1.6.7
      • TODO
    • sudo systemctl restart lumd
  • If it succeeds you should see it in the logs journalctl -u lumd -f

Install and setup Cosmovisor

We highly recommend validators use cosmovisor to run their nodes. This will make low-downtime upgrades smoother, as validators don't have to manually upgrade binaries during the upgrade, and instead can preinstall new binaries, and cosmovisor will automatically update them based on on-chain SoftwareUpgrade proposals.

You should review the docs for cosmovisor located here: https://docs.cosmos.network/master/run-node/cosmovisor.html

If you choose to use cosmovisor, please continue with these instructions:

To install Cosmovisor:

git clone https://github.com/cosmos/cosmos-sdk
cd cosmos-sdk
git checkout cosmovisor/v1.3.0
make cosmovisor
cp cosmovisor/cosmovisor $GOPATH/bin/cosmovisor
cd $HOME

After this, you must make the necessary folders for cosmosvisor in your daemon home directory (~/.lumd).

mkdir -p ~/.lumd/cosmovisor
mkdir -p ~/.lumd/cosmovisor/genesis
mkdir -p ~/.lumd/cosmovisor/genesis/bin
mkdir -p ~/.lumd/cosmovisor/upgrades

Cosmovisor requires some ENVIRONMENT VARIABLES be set in order to function properly. We recommend setting these in your .profile so it is automatically set in every session.

For validators we recommmend setting

  • DAEMON_ALLOW_DOWNLOAD_BINARIES=false
  • DAEMON_LOG_BUFFER_SIZE=512
  • DAEMON_RESTART_AFTER_UPGRADE=true
  • UNSAFE_SKIP_BACKUP=true
echo "# Setup Cosmovisor" >> ~/.profile
echo "export DAEMON_NAME=lumd" >> ~/.profile
echo "export DAEMON_HOME=$HOME/.lumd" >> ~/.profile
echo "export DAEMON_ALLOW_DOWNLOAD_BINARIES=false" >> ~/.profile
echo "export DAEMON_LOG_BUFFER_SIZE=512" >> ~/.profile
echo "export DAEMON_RESTART_AFTER_UPGRADE=true" >> ~/.profile
source ~/.profile

Prepare lumd to run with cosmovisor

move the current lumd binary into the cosmovisor/genesis/bin folder.

mv $GOPATH/bin/lumd ~/.lumd/cosmovisor/genesis/bin

You will need to edit your service file to run cosmovisor

sudo vim /etc/systemd/system/lumd.service

[Unit]
Description=Lum Network Daemon
After=network-online.target

[Service]
User=$USER
ExecStart=$GOPATH/bin/cosmovisor run start --home $HOME/.lumd
Restart=always
RestartSec=3
LimitNOFILE=4096

[Install]
WantedBy=multi-user.target