[Unit]
Description=amazon-ssm-agent
Documentation=https://docs.aws.amazon.com/systems-manager/
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
WorkingDirectory=/usr/bin/
ExecStart=/usr/bin/amazon-ssm-agent
KillMode=process

# Match upstream packaging/linux/amazon-ssm-agent.service:
# - Restart=always so transient failures (e.g. IMDS blip) self-recover.
# - RestartPreventExitStatus=194 — the agent uses 194 to signal that
#   it has requested a system reboot; systemd should honor that by
#   NOT restarting the agent (the system is shutting down).
# - RestartSec=90 — avoid thundering herd on IMDS right after boot.
Restart=always
RestartPreventExitStatus=194
RestartSec=90

[Install]
WantedBy=multi-user.target