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MotorSignal Operations Actions — Production Installation Guide

CAUTION: OPERATOR EXECUTION GUIDE ONLY
Do not apply these commands automatically. Execute manually during an authorized maintenance window.

1. Helper Script Installation

# 1. Install helper script to canonical location
sudo install -m 0750 -o root -g root \
  /opt/motorsignal/current/backend/scripts/ops-action-helper.sh \
  /opt/motorsignal/current/backend/scripts/ops-action-helper.sh

# 2. Verify helper permissions
ls -la /opt/motorsignal/current/backend/scripts/ops-action-helper.sh
# Expected: -rwxr-x--- 1 root root

2. Sudoers Configuration

# 1. Copy sudoers fragment
sudo install -m 0440 -o root -g root \
  /opt/motorsignal/current/backend/docs/ops-actions/sudoers-fragment \
  /etc/sudoers.d/motorsignal-ops-actions

# 2. Validate sudoers syntax (MANDATORY)
sudo visudo -c -f /etc/sudoers.d/motorsignal-ops-actions
# Expected: /etc/sudoers.d/motorsignal-ops-actions: parsed OK

3. Environment Configuration

In /etc/motorsignal/production.env, ensure:

OPS_ACTION_HELPER_PATH=/opt/motorsignal/current/backend/scripts/ops-action-helper.sh

4. Emergency Killswitch (Disable all mutation controls)

To rapidly disable all mutations without stopping the API or website:

sudo chmod 0000 /opt/motorsignal/current/backend/scripts/ops-action-helper.sh

When chmod is set to 0000, is_helper_configured() will return false, and all mutation requests will fail closed with HTTP 503.