Official Paloma Protocol Documentation

# Cosmovisor

Cosmovisor enables you to download new binaries ahead of time and be completely (or close to completely) hands off during the chain halt upgrade time.

You'll need to set up some environment variables and folder structure in addition to the installation.

# Setup

1. Install Cosmovisor confirm the latest tag on the Cosmos SDK github (opens new window)

go install github.com/cosmos/cosmos-sdk/cosmovisor/cmd/cosmovisor@`latest_tag`

2. Create the following required directories

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

The ~/.paloma/cosmovisor directory has a genesis subfolder which contains the palomad version of when you first set up Cosmovisor. All subsequent palomad binary versions will be placed in inside the upgrades subfolder directory. Addittionaly, comsmovisor creates a current symlink to the currently active directory.

.
├── current -> genesis or upgrades/{upgrade_tag_name}
├── genesis
│   └── bin
│       └── palomad
└── upgrades
    └── {upgrade_tag_name}
        ├── bin
        │   └── palomad
        └── upgrade-info.json

Please note that ~/.paloma/cosmovisor only stores the palomad binaries. The cosmovisor binary itself is stored in any typical location (e.g. /usr/local/bin).

3. Set the environment variables

Visit the official documentation (opens new window) for more information on these variables.

cat <<EOT >> ~/.profile

# Setup Cosmovisor
export DAEMON_NAME=palomad
export DAEMON_HOME=$HOME/.paloma
export DAEMON_ALLOW_DOWNLOAD_BINARIES=false
export DAEMON_LOG_BUFFER_SIZE=512
export DAEMON_RESTART_AFTER_UPGRADE=true
export UNSAFE_SKIP_BACKUP=true
EOT

source ~/.profile

You may leave out UNSAFE_SKIP_BACKUP=true, however the backup takes a decent amount of time and space.

4. Copy the current binary into cosmovisor folder

cp /usr/local/bin/palomad $DAEMON_HOME/cosmovisor/genesis/bin

5. Update the systemd service file

You may want to change the description and you will need to u[date the ExecStart comment to reference the cosmovisor binary.


 








 







[Unit]
Description=Paloma (Cosmovisor)
After=network-online.target

[Service]
LimitNOFILE=4096
Restart=always
RestartSec=5
WorkingDirectory=~
ExecStartPre=
ExecStart=/usr/local/go/bin/cosmovisor run start
Environment=PIGEON_HEALTHCHECK_PORT=5757
ExecReload=

[Install]
WantedBy=multi-user.target
~

# Upgrades

When there is a new release for palomad, create a new directory that contains the new binary. You can do this as soon as the new binary is confirmed and available.

mkdir -p ~/.paloma/cosmovisor/upgrades/`upgrade_tag_name`

Then get the new binary and copy it into the new directory.

wget -O - https://github.com/palomachain/paloma/releases/download/{upgrade_tag_name}/paloma_Linux_x86_64.tar.gz  | \
tar -C /usr/local/bin -xvzf - palomad

cp /usr/local/bin/palomad $DAEMON_HOME/cosmovisor/upgrades/`upgrade_tag_name`

That's it. At the chain halt upgrade time Cosmovisor will switch over to the new binary.

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