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funcs.go
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funcs.go
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package cc
import (
"bufio"
"bytes"
"fmt"
"io/ioutil"
"os"
"os/exec"
"sort"
"strconv"
"strings"
"github.com/edgi-io/edgi-os/pkg/command"
"github.com/edgi-io/edgi-os/pkg/config"
"github.com/edgi-io/edgi-os/pkg/hostname"
"github.com/edgi-io/edgi-os/pkg/mode"
"github.com/edgi-io/edgi-os/pkg/module"
"github.com/edgi-io/edgi-os/pkg/ssh"
"github.com/edgi-io/edgi-os/pkg/sysctl"
"github.com/edgi-io/edgi-os/pkg/version"
"github.com/edgi-io/edgi-os/pkg/writefile"
"github.com/sirupsen/logrus"
)
func ApplyModules(cfg *config.CloudConfig) error {
return module.LoadModules(cfg)
}
func ApplySysctls(cfg *config.CloudConfig) error {
return sysctl.ConfigureSysctl(cfg)
}
func ApplyHostname(cfg *config.CloudConfig) error {
return hostname.SetHostname(cfg)
}
func ApplyPassword(cfg *config.CloudConfig) error {
return command.SetPassword(cfg.EDGI.Password)
}
func ApplyRuncmd(cfg *config.CloudConfig) error {
return command.ExecuteCommand(cfg.Runcmd)
}
func ApplyBootcmd(cfg *config.CloudConfig) error {
return command.ExecuteCommand(cfg.Bootcmd)
}
func ApplyInitcmd(cfg *config.CloudConfig) error {
return command.ExecuteCommand(cfg.Initcmd)
}
func ApplyWriteFiles(cfg *config.CloudConfig) error {
writefile.WriteFiles(cfg)
return nil
}
func ApplySSHKeys(cfg *config.CloudConfig) error {
return ssh.SetAuthorizedKeys(cfg, false)
}
func ApplySSHKeysWithNet(cfg *config.CloudConfig) error {
return ssh.SetAuthorizedKeys(cfg, true)
}
func ApplyK3SWithRestart(cfg *config.CloudConfig) error {
return ApplyK3S(cfg, true, false)
}
func ApplyK3SInstall(cfg *config.CloudConfig) error {
return ApplyK3S(cfg, true, true)
}
func ApplyK3SNoRestart(cfg *config.CloudConfig) error {
return ApplyK3S(cfg, false, false)
}
func ApplyK3S(cfg *config.CloudConfig, restart, install bool) error {
mode, err := mode.Get()
if err != nil {
return err
}
if mode == "install" {
return nil
}
k3sExists := false
k3sLocalExists := false
if _, err := os.Stat("/sbin/k3s"); err == nil {
k3sExists = true
}
if _, err := os.Stat("/usr/local/bin/k3s"); err == nil {
k3sLocalExists = true
}
args := cfg.EDGI.K3sArgs
vars := []string{
"INSTALL_K3S_NAME=service",
}
if !k3sExists && !restart {
return nil
}
if k3sExists {
vars = append(vars, "INSTALL_K3S_SKIP_DOWNLOAD=true")
vars = append(vars, "INSTALL_K3S_BIN_DIR=/sbin")
vars = append(vars, "INSTALL_K3S_BIN_DIR_READ_ONLY=true")
} else if k3sLocalExists {
vars = append(vars, "INSTALL_K3S_SKIP_DOWNLOAD=true")
} else if !install {
return nil
}
if !restart {
vars = append(vars, "INSTALL_K3S_SKIP_START=true")
}
if cfg.EDGI.ServerURL == "" {
if len(args) == 0 {
args = append(args, "server")
}
} else {
vars = append(vars, fmt.Sprintf("K3S_URL=%s", cfg.EDGI.ServerURL))
if len(args) == 0 {
args = append(args, "agent")
}
}
if strings.HasPrefix(cfg.EDGI.Token, "K10") {
vars = append(vars, fmt.Sprintf("K3S_TOKEN=%s", cfg.EDGI.Token))
} else if cfg.EDGI.Token != "" {
vars = append(vars, fmt.Sprintf("K3S_CLUSTER_SECRET=%s", cfg.EDGI.Token))
}
var labels []string
for k, v := range cfg.EDGI.Labels {
labels = append(labels, fmt.Sprintf("%s=%s", k, v))
}
if mode != "" {
labels = append(labels, fmt.Sprintf("edgi.io/edgi-os/mode=%s", mode))
}
labels = append(labels, fmt.Sprintf("edgi.io/edgi-os/version=%s", version.Version))
sort.Strings(labels)
for _, l := range labels {
args = append(args, "--node-label", l)
}
for _, taint := range cfg.EDGI.Taints {
args = append(args, "--kubelet-arg", "register-with-taints="+taint)
}
cmd := exec.Command("/usr/libexec/edgi/k3s-install.sh", args...)
cmd.Env = append(os.Environ(), vars...)
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
cmd.Stdin = os.Stdin
logrus.Debugf("Running %s %v %v", cmd.Path, cmd.Args, vars)
return cmd.Run()
}
func ApplyInstall(cfg *config.CloudConfig) error {
mode, err := mode.Get()
if err != nil {
return err
}
if mode != "install" {
return nil
}
cmd := exec.Command("edgi", "install")
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
cmd.Stdin = os.Stdin
return cmd.Run()
}
func ApplyDNS(cfg *config.CloudConfig) error {
buf := &bytes.Buffer{}
buf.WriteString("[General]\n")
buf.WriteString("NetworkInterfaceBlacklist=veth\n")
buf.WriteString("PreferredTechnologies=ethernet,wifi\n")
if len(cfg.EDGI.DNSNameservers) > 0 {
dns := strings.Join(cfg.EDGI.DNSNameservers, ",")
buf.WriteString("FallbackNameservers=")
buf.WriteString(dns)
buf.WriteString("\n")
} else {
buf.WriteString("FallbackNameservers=8.8.8.8\n")
}
if len(cfg.EDGI.NTPServers) > 0 {
ntp := strings.Join(cfg.EDGI.NTPServers, ",")
buf.WriteString("FallbackTimeservers=")
buf.WriteString(ntp)
buf.WriteString("\n")
}
err := ioutil.WriteFile("/etc/connman/main.conf", buf.Bytes(), 0644)
if err != nil {
return fmt.Errorf("failed to write /etc/connman/main.conf: %v", err)
}
return nil
}
func ApplyWifi(cfg *config.CloudConfig) error {
if len(cfg.EDGI.Wifi) == 0 {
return nil
}
buf := &bytes.Buffer{}
buf.WriteString("[WiFi]\n")
buf.WriteString("Enable=true\n")
buf.WriteString("Tethering=false\n")
if buf.Len() > 0 {
if err := os.MkdirAll("/var/lib/connman", 0755); err != nil {
return fmt.Errorf("failed to mkdir /var/lib/connman: %v", err)
}
if err := ioutil.WriteFile("/var/lib/connman/settings", buf.Bytes(), 0644); err != nil {
return fmt.Errorf("failed to write to /var/lib/connman/settings: %v", err)
}
}
buf = &bytes.Buffer{}
buf.WriteString("[global]\n")
buf.WriteString("Name=cloud-config\n")
buf.WriteString("Description=Services defined in the cloud-config\n")
for i, w := range cfg.EDGI.Wifi {
name := fmt.Sprintf("wifi%d", i)
buf.WriteString("[service_")
buf.WriteString(name)
buf.WriteString("]\n")
buf.WriteString("Type=wifi\n")
buf.WriteString("Passphrase=")
buf.WriteString(w.Passphrase)
buf.WriteString("\n")
buf.WriteString("Name=")
buf.WriteString(w.Name)
buf.WriteString("\n")
}
if buf.Len() > 0 {
return ioutil.WriteFile("/var/lib/connman/cloud-config.config", buf.Bytes(), 0644)
}
return nil
}
func ApplyDataSource(cfg *config.CloudConfig) error {
if len(cfg.EDGI.DataSources) == 0 {
return nil
}
args := strings.Join(cfg.EDGI.DataSources, " ")
buf := &bytes.Buffer{}
buf.WriteString("command_args=\"")
buf.WriteString(args)
buf.WriteString("\"\n")
if err := ioutil.WriteFile("/etc/conf.d/cloud-config", buf.Bytes(), 0644); err != nil {
return fmt.Errorf("failed to write to /etc/conf.d/cloud-config: %v", err)
}
return nil
}
func ApplyEnvironment(cfg *config.CloudConfig) error {
if len(cfg.EDGI.Environment) == 0 {
return nil
}
env := make(map[string]string, len(cfg.EDGI.Environment))
if buf, err := ioutil.ReadFile("/etc/environment"); err == nil {
scanner := bufio.NewScanner(bytes.NewReader(buf))
for scanner.Scan() {
line := scanner.Text()
line = strings.TrimSpace(line)
if strings.HasPrefix(line, "#") {
continue
}
line = strings.TrimPrefix(line, "export")
line = strings.TrimSpace(line)
if len(line) > 1 {
parts := strings.SplitN(line, "=", 2)
key := parts[0]
val := ""
if len(parts) > 1 {
if val, err = strconv.Unquote(parts[1]); err != nil {
val = parts[1]
}
}
env[key] = val
}
}
}
for key, val := range cfg.EDGI.Environment {
env[key] = val
}
buf := &bytes.Buffer{}
for key, val := range env {
buf.WriteString(key)
buf.WriteString("=")
buf.WriteString(strconv.Quote(val))
buf.WriteString("\n")
}
if err := ioutil.WriteFile("/etc/environment", buf.Bytes(), 0644); err != nil {
return fmt.Errorf("failed to write to /etc/environment: %v", err)
}
return nil
}