How to Test Upgrade Before Applying

Prerequisites

Before testing upgrades, make sure you have:

• SSH access to your VPS
• Root or sudo privileges
• A staging environment (recommended)

Method 1: APT Dry Run (Ubuntu/Debian)

Connect to your VPS:

ssh hxroot@YOUR_SERVER_IP -p 22

sudo apt upgrade --dry-run

sudo apt full-upgrade --dry-run

Method 2: Check What Would Be Updated

apt list --upgradable

Method 3: Simulate Dist Upgrade (OS Version Upgrade)

sudo do-release-upgrade --dry-run

Method 4: YUM Dry Run (CentOS/RHEL)

sudo yum update --assumeno

Method 5: Check Upgrade Impact

apt-get --just-print upgrade | grep -E "^Inst" | awk '{print $2}' > /tmp/package_list.txt

Then review each package.

Method 6: Use Snapshot Before Upgrade

Through Hostxpeed portal, take a snapshot of your VPS before major upgrades.