Install Workflow

If you have a pure host, it can be a cloud server, bare metal server, virtual machine, or even your laptop. Then this chapter is very suitable for you.

Operating Systems

Drycc is expected to work on most modern Linux systems. Some OSS have specific requirements:

• (Red Hat/CentOS) Enterprise Linux, they usually use RPM package management.
• Ubuntu (Desktop/Server/Cloud) Linux, a very popular distribution.
• Debian GNU Linux, a very pure distribution of opensource software.

If you want to add more Linux distribution support, please submit a issue on github or submit PR directly.

System Software

Some basic software needs to be installed before installing drycc workflow.

OS configuration

K8s requires a large number of ports. If you are not sure what they are, please close the local firewall or open these ports. At the same time, because k8s you need system time, you need to ensure that the system time is correct.

Installing NFSv4 client

The command used to install a NFSv4 client differs depending on the Linux distribution.

For Debian and Ubuntu, use this command:

$ apt-get install nfs-common

For RHEL, CentOS, and EKS with EKS Kubernetes Worker AMI with AmazonLinux2 image, use this command:

$ yum install nfs-utils

Installing curl

For Debian and Ubuntu, use this command:

$ apt-get install curl

For RHEL, CentOS, and EKS with EKS Kubernetes Worker AMI with AmazonLinux2 image, use this command:

$ yum install curl

Hardware

Hardware requirements scale based on the size of your deployments. Minimum recommendations are outlined here.

• RAM: 1G Minimum (we recommend at least 2GB)
• CPU: 1 Minimum

This configuration only contains the minimum requirements that can meet the operation.

Disk

Drycc performance depends on the performance of the database. To ensure optimal speed, we recommend using an SSD when possible. Disk performance will vary on ARM devices utilizing an SD card or eMMC.

Domain Name

Drycc needs a root domain name under your full control and points this domain name to the server to be installed. Suppose there is a wildcard domain pointing to the current server to install drycc, which is the name *.dryccdoman.com. We need to set the PLATFORM_DOMAIN environment variables before installation.

$ export PLATFORM_DOMAIN=dryccdoman.co

Of course, if it is a test environment, we can also use nip.io, an IP to domain name service. For example, your host IP is 59.46.3.190, we will get the following domain name 59.46.3.190.nip.io

$ export PLATFORM_DOMAIN=59.46.3.190.nip.io

Install

Before installation, please make sure whether your installation environment is a public network. If it is an intranet environment and there is no public IP, you need to disable the automatic certificate.

$ export CERT_MANAGER_ENABLED=false

Then you can use the installation script available at https://www.drycc.cc/install.sh to install drycc as a service on systemd and openrc based systems.

$ curl -sfL https://www.drycc.cc/install.sh | bash -

!!! important If you are in China, you need to use mirror acceleration:

```
$ curl -sfL https://www.drycc.cc/install.sh | INSTALL_DRYCC_MIRROR=cn bash -
```

Install Node

Node can be a simple agent or a server; Server has the function of agent. Multiple servers have high availability, but the number of servers should not exceed 7 at most. There is no limit to the number of agents.

• First, check the cluster token of the master.

$ cat /var/lib/rancher/k3s/server/node-token
K1078e7213ca32bdaabb44536f14b9ce7926bb201f41c3f3edd39975c16ff4901ea::server:33bde27f-ac49-4483-b6ac-f4eec2c6dbfa

We assume that the IP address of the cluster master is 192.168.6.240, in that way.

• Then, Set the environment variable:

$ export K3S_URL=https://192.168.6.240:6443
$ export K3S_TOKEN="K1078e7213ca32bdaabb44536f14b9ce7926bb201f41c3f3edd39975c16ff4901ea::server:33bde27f-ac49-4483-b6ac-f4eec2c6dbfa"

!!! important If you are in China, you need to use mirror acceleration:

```
$ export INSTALL_DRYCC_MIRROR=cn
```

• Join the cluster as server:

$ curl -sfL https://www.drycc.cc/install.sh | bash -s - install_k3s_server

• Join the cluster as agent:

$ curl -sfL https://www.drycc.cc/install.sh | bash -s - install_k3s_agent

Install Options

When using this method to install drycc, the following environment variables can be used to configure the installation:

Since the installation script will install k3s, other environment variables can refer to k3s installation environment variables.

Uninstall

If you installed drycc using an installation script, you can uninstall the entire drycc using this script.

$ curl -sfL https://www.drycc.cc/uninstall.sh | bash -