Preface

Two methods for provisioning containers.

Single Container Provisioning

• Creates a single containerd container
• Can enable IPv6 networking for a containerd container after containerd-ipv6 is configured during installation
• Supports x86_64 and ARM64 architecture servers

IPv6 network mode

When the host has only an SLAAC-assigned public /64, containerd-ipv6 uses a host-route-disjoint ULA network with NAT66. In that mode, independent_ipv6=y enables IPv6 egress only; it does not allocate an Internet-reachable public /128.

Download Script

curl -sSLO https://raw.githubusercontent.com/oneclickvirt/containerd/main/scripts/onecontainerd.sh
chmod +x onecontainerd.sh

Example

Supported variables for running:

./onecontainerd.sh <name> <cpu> <memory_mb> <password> <sshport> <startport> <endport> [independent_ipv6:y/n] [system] [disk_gb]

Currently supported system values:

• debian
• ubuntu
• alpine
• almalinux
• rockylinux
• openeuler

Default is debian if not specified.

./onecontainerd.sh ct1 1 512 MyPassword 25000 34975 35000 n debian 0

Example container information:

Attribute	Value
Container name	ct1
SSH username	root
SSH password	MyPassword
CPU cores	1
Memory	512MB
SSH port	25000
External/internal port range	34975 to 35000
System	debian
Enable IPv6 egress (NAT66)	N
Disk size	Unlimited

Related Operations

List all containers

nerdctl ps -a

Enter container

nerdctl exec -it ct1 bash

Enter Alpine container

nerdctl exec -it ct1 sh

Type exit to leave the container.

Delete container

nerdctl rm -f ct1

View container logs

nerdctl logs ct1

Batch Container Provisioning

• Multiple runs inherit configuration and generate sequentially
• Auto-increments container name (ct1, ct2, ...), SSH port, and public ports
• Container information recorded to ctlog file
• Recommended to run in screen to avoid SSH disconnection

Run

curl -sSLO https://raw.githubusercontent.com/oneclickvirt/containerd/main/scripts/create_containerd.sh
chmod +x create_containerd.sh
./create_containerd.sh

Query Batch Container Information

cat ctlog

Output format:

container_name ssh_port root_password cpu_cores memory_mb start_port end_port disk_gb

One line per container.

Remove All Containers and Images

nerdctl ps -aq | xargs -r nerdctl rm -f
nerdctl images -q | xargs -r nerdctl rmi -f
rm -rf ctlog

Restart All Containers After Host Reboot

By default, containers are not configured to auto-restart. Run the following command to start all stopped containers:

nerdctl ps -aq -f status=exited | xargs -r nerdctl start