A Complete Tutorial For Beginners To Quickly Get Started Deploying Vultr US CN2 Cloud Host

1.

Before you start, visit https://www.vultr.com/ to register an account. Prepare a valid email, identification (or passport), and a credit card or PayPal that can be used for payment. Fill in your real information during registration, complete email verification, then go to "Billing" to recharge or bind your payment method.

Tip: Vultr may sometimes require additional identity verification; follow the prompts to upload your ID and wait for review; Only after approval can you purchase a host.

2.

Log in to the Control Panel and click "Products" → "Deploy New Instance". Select Instance Type: Generally choose "Cloud Compute (VC2)".

In "Server Location," select your preferred U.S. data center (such as Los Angeles, New Jersey, Seattle, etc.). Note: Vultr does not necessarily directly label the "CN2" route. If you need CN2 direct connection effects, please first contact Vultr support to confirm whether the selected data center can route to China via CN2, or choose a third-party line provider that supports CN2.

3.

Choose plans based on your needs (such as entry-level models with 1 vCPU / 1GB of memory). Select your operating system (Ubuntu 22.04 LTS or 20.04 LTS recommended). Choose backup and take snapshots (pay-as-you-go).

If there is a "Premium Network" or similar option in the network options, you can choose according to your needs to achieve a more stable global network; Enable IPv6 depending on your needs.

4.

In the "SSH Keys" section, add locally generated public keys (ssh-keygen -t rsa -b 4096). After deployment, password-free login is possible. You can also fill in "Startup Script" to write common initialization commands (such as apt update, create user, install necessary software), avoiding manual operations after first login.

After adding the public key in the example, select the key during deployment.

5.

After deployment, you can see the instance's public IP address, password (if logged in with password), and console in the Control Panel. Use local terminal: ssh <服务器IP>root@. If you use an RSA public key, the command will go directly.

If the first login fails, check whether firewall rules are enabled in the firewall or Control Panel, or if you need to reset the network in the console.

6.

Create a new user and add sudo:adduser youruser & usermod -aG sudo youruser. Copy ~/.ssh/authorized_keys to the new user and set permissions: mkdir -p /home/youruser/.ssh && cp /root/.ssh/authorized_keys /home/youruser/.ssh/ & chown -R youruser:youruser /home/youruser/.ssh && chmod 700 / home/youruser/.ssh && chmod 600 /home/youruser/.ssh/authorized_keys。

Edit /etc/ssh/sshd_config, set PermitRootLogin no and PasswordAuthentication no, then save and systemctl restart sshd.

7.

Update the system: apt update & apt upgrade -y. Common installation tool: apt install -y vim curl wget git ufw mtr traceroute.

Open BBR: edit /etc/sysctl.conf, add net.core.default_qdisc=fq, net.ipv4.tcp_congestion_control=bbr, then execute sysctl -p. Check if it works: lsmod | grep bbr or sysctl net.ipv4.tcp_congestion_control.

Create swap (recommended when memory is limited): fallocate -l 2G /swapfile & chmod 600 /swapfile & mkswap /swapfile & swapon /swapfile, and add /swapfile to /etc/fstab.

8.

Use UFW to open necessary ports: ufw allow OpenSSH & ufw allow 80 & ufw allow 443 & ufw enable. Check the status ufw status verbose.

Install fail2ban: apt install -y fail2ban, and use default rules or edit /etc/fail2ban/jail.local as needed to protect SSH and web services. Start and enable systemctl enable --now fail2ban.

9.

Install Nginx: apt install -y nginx. Domain name resolution (at the domain provider's DNS) A record points to the instance's public IP address. After it takes effect, create a site configuration on the server with /etc/nginx/sites-available/yourdomain.conf, then run ln -s to sites-enabled, nginx -t & systemctl reload nginx.

Request a certificate: apt install -y certbot python3-certbot-nginx, then certbot --nginx -d yourdomain.com, follow the prompts to automatically configure HTTPS and set auto-renewal (/etc/cron.d/letsencrypt or systemctl enable --now certbot.timer).

10.

Q: How can I confirm whether the purchased Vultr US node is going to China via CN2?

Answer: Vultr does not always mark "CN2" on the panel. First, test the route with mtr -rwzbc 100 < China target IP> or traceroute -n to see if the intermediate routing node passes through China Telecom CN2 nodes (usually including keywords like telia/ChinaTelecom). The most reliable way is to contact Vultr support to clearly inquire whether the selected data center supports CN2 service or to request a dedicated line service with CN2 guarantee.

11.

Q: How can you verify and optimize the speed and stability from Vultr in the US to China?

Answer: First, use mtr, traceroute, and ping to test the latency and packet loss from different data centers to the target Chinese IP; Then use iperf3 to test throughput at both ends (a test server is needed on the China side). You can try switching data centers, enabling Premium Network, adjusting MTU (usually by default), or using TCP Congestion Control (BBR). If latency is strict, consider using a domestic CDN or purchasing a CN2 dedicated line/transit VPS.

12.

Q: What are common beginner problems, and how can they be troubled?

Answer: Common issues include inability to perform SSH (check security group/UFW and console reset password), domain name resolution not working (confirm DNS is active and there are no caching issues), HTTPS failure (check if ports 80/443 are open), and high routing latency (confirm with mtr/traceroute). Daily recommendations: Perform regular apt updates/upgrades, enable automatic backups or take snapshots yourself, check certificate renewal status monthly, monitor disk and memory usage, configure log rotation and remote backups.