stacks.service

## Modeled after https://github.com/bitcoin/bitcoin/blob/master/contrib/init/bitcoind.service

[Unit]
Description=Stacks Blockchain
# https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/
After=network-online.target
After=bitcoin.service
After=signer.service
Wants=network-online.target

ConditionFileIsExecutable=/usr/local/bin/stacks-node
ConditionPathExists=/stacks-blockchain/conf/mainnet/follower.toml
ConditionPathIsDirectory=/stacks-blockchain

[Service]
ExecStart=/usr/local/bin/stacks-node start --config /stacks-blockchain/conf/mainnet/follower.toml

# Make sure the config directory is readable by the service user
PermissionsStartOnly=true
ExecStartPre=/bin/chgrp stacks /stacks-blockchain/conf/mainnet

# Process management
####################
PIDFile=/run/stacks-blockchain/stacks-blockchain.pid
Restart=no
TimeoutStopSec=900
KillSignal=SIGINT
SendSIGKILL=no

# Directory creation and permissions
####################################
# Run as SERVICE_USER:SERVICE_USER
User=stacks
Group=stacks

# /run/stacks-blockchain
RuntimeDirectory=stacks-blockchain
RuntimeDirectoryMode=0710

# /etc/stacks-blockchain
ConfigurationDirectory=stacks-blockchain
ConfigurationDirectoryMode=0710

# Hardening measures
####################

# Provide a private /tmp and /var/tmp.
PrivateTmp=true

# Mount /usr, /boot/ and /etc read-only for the process.
ProtectSystem=full

# Deny access to /home, /root and /run/user
ProtectHome=true

# Disallow the process and all of its children to gain
# new privileges through execve().
NoNewPrivileges=true

# Use a new /dev namespace only populated with API pseudo devices
# such as /dev/null, /dev/zero and /dev/random.
PrivateDevices=true

# Deny the creation of writable and executable memory mappings.
MemoryDenyWriteExecute=true
SystemCallArchitectures=native

[Install]
WantedBy=multi-user.target