/
k3s.go
162 lines (149 loc) · 4.82 KB
/
k3s.go
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package kubernetes
import (
"fmt"
"strings"
"github.com/abiosoft/colima/cli"
"github.com/abiosoft/colima/config"
"github.com/abiosoft/colima/daemon/process/vmnet"
"github.com/abiosoft/colima/environment"
"github.com/abiosoft/colima/environment/container/containerd"
"github.com/abiosoft/colima/environment/container/docker"
"github.com/abiosoft/colima/environment/vm/lima/limautil"
"github.com/abiosoft/colima/util/downloader"
"github.com/sirupsen/logrus"
)
func installK3s(host environment.HostActions,
guest environment.GuestActions,
a *cli.ActiveCommandChain,
log *logrus.Entry,
containerRuntime string,
k3sVersion string,
disable []string,
) {
installK3sBinary(host, guest, a, k3sVersion)
installK3sCache(host, guest, a, log, containerRuntime, k3sVersion)
installK3sCluster(host, guest, a, containerRuntime, k3sVersion, disable)
}
func installK3sBinary(
host environment.HostActions,
guest environment.GuestActions,
a *cli.ActiveCommandChain,
k3sVersion string,
) {
downloadPath := "/tmp/k3s"
baseURL := "https://github.com/k3s-io/k3s/releases/download/" + k3sVersion + "/"
shaSumTxt := "sha256sum-" + guest.Arch().GoArch() + ".txt"
url := baseURL + "k3s"
shaURL := baseURL + shaSumTxt
if guest.Arch().GoArch() == "arm64" {
url += "-arm64"
}
a.Add(func() error {
r := downloader.Request{
URL: url,
Filename: downloadPath,
SHA: &downloader.SHA{Size: 256, URL: shaURL},
}
return downloader.Download(host, guest, r)
})
a.Add(func() error {
return guest.Run("sudo", "install", downloadPath, "/usr/local/bin/k3s")
})
}
func installK3sCache(
host environment.HostActions,
guest environment.GuestActions,
a *cli.ActiveCommandChain,
log *logrus.Entry,
containerRuntime string,
k3sVersion string,
) {
baseURL := "https://github.com/k3s-io/k3s/releases/download/" + k3sVersion + "/"
imageTar := "k3s-airgap-images-" + guest.Arch().GoArch() + ".tar"
shaSumTxt := "sha256sum-" + guest.Arch().GoArch() + ".txt"
imageTarGz := imageTar + ".gz"
downloadPathTar := "/tmp/" + imageTar
downloadPathTarGz := "/tmp/" + imageTarGz
url := baseURL + imageTarGz
shaURL := baseURL + shaSumTxt
a.Add(func() error {
r := downloader.Request{
URL: url,
Filename: downloadPathTarGz,
SHA: &downloader.SHA{Size: 256, URL: shaURL},
}
return downloader.Download(host, guest, r)
})
a.Add(func() error {
return guest.Run("gzip", "-f", "-d", downloadPathTarGz)
})
airGapDir := "/var/lib/rancher/k3s/agent/images/"
a.Add(func() error {
return guest.Run("sudo", "mkdir", "-p", airGapDir)
})
a.Add(func() error {
return guest.Run("sudo", "cp", downloadPathTar, airGapDir)
})
// load OCI images for K3s
// this can be safely ignored if failed as the images would be pulled afterwards.
switch containerRuntime {
case containerd.Name:
a.Stage("loading oci images")
a.Add(func() error {
if err := guest.Run("sudo", "nerdctl", "-n", "k8s.io", "load", "-i", downloadPathTar, "--all-platforms"); err != nil {
log.Warnln(fmt.Errorf("error loading oci images: %w", err))
log.Warnln("startup may delay a bit as images will be pulled from oci registry")
}
return nil
})
case docker.Name:
a.Stage("loading oci images")
a.Add(func() error {
if err := guest.Run("sudo", "docker", "load", "-i", downloadPathTar); err != nil {
log.Warnln(fmt.Errorf("error loading oci images: %w", err))
log.Warnln("startup may delay a bit as images will be pulled from oci registry")
}
return nil
})
}
}
func installK3sCluster(
host environment.HostActions,
guest environment.GuestActions,
a *cli.ActiveCommandChain,
containerRuntime string,
k3sVersion string,
k3sArgs []string,
) {
// install k3s last to ensure it is the last step
downloadPath := "/tmp/k3s-install.sh"
url := "https://raw.githubusercontent.com/k3s-io/k3s/" + k3sVersion + "/install.sh"
a.Add(func() error {
r := downloader.Request{URL: url, Filename: downloadPath}
return downloader.Download(host, guest, r)
})
a.Add(func() error {
return guest.Run("sudo", "install", downloadPath, "/usr/local/bin/k3s-install.sh")
})
args := append([]string{
"--write-kubeconfig-mode", "644",
}, k3sArgs...)
// replace ip address if networking is enabled
ipAddress := limautil.IPAddress(config.CurrentProfile().ID)
if ipAddress == "127.0.0.1" {
args = append(args, "--flannel-iface", "eth0")
} else {
args = append(args, "--bind-address", ipAddress)
args = append(args, "--advertise-address", ipAddress)
args = append(args, "--flannel-iface", vmnet.NetInterface)
}
switch containerRuntime {
case docker.Name:
args = append(args, "--docker")
case containerd.Name:
args = append(args, "--container-runtime-endpoint", "unix:///run/containerd/containerd.sock")
}
a.Add(func() error {
return guest.Run("sh", "-c", "INSTALL_K3S_SKIP_DOWNLOAD=true INSTALL_K3S_SKIP_ENABLE=true k3s-install.sh "+strings.Join(args, " "))
})
}