Emergency Startup Configuration

Overview

Emergency startup configuration ensures critical VMs boot first during host startup, even before non-critical services. Essential for infrastructure VMs like DNS, DHCP, and authentication.

Priority Startup

Set Startup Order

# Infrastructure VMs first (lowest delay)
qm set 100 --startup-delay 0    # DNS/DHCP
qm set 101 --startup-delay 10   # Auth
qm set 102 --startup-delay 20   # File server
qm set 103 --startup-delay 30   # Web apps

Group Priority

# Create startup groups
# File: /etc/pve/datacenter.conf
startup: 
  - vm: 100
    delay: 0
  - vm: 101
    delay: 10

Critical VM Identification

Tag Critical VMs

# Enable boot for all critical VMs
for vm in 100 101 102; do
  qm set $vm --onboot 1
done

Startup Group Configuration

Define Groups

# Infrastructure
ha-manager group add infra pve1 pve2 pve3
 
# Set priority
ha-manager crm add infra --vm 100 --priority 100

Related Articles

• Auto-Start
• High-Availability
• Cluster

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