EduBox Dev
66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"os/exec"
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"runtime"
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)
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type podmanMachine struct {
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Name string `json:"name"`
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Running bool `json:"running"`
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VMType string `json:"vm_type"`
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}
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// ensurePodmanMachineDNS configures public DNS resolvers on running Podman
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// machines on Windows and macOS. This is required because the Podman VM does
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// not always inherit a working DNS from the host, which prevents pulling
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// images and reaching api.wordpress.org from containers.
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func ensurePodmanMachineDNS() {
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if runtime.GOOS != "windows" && runtime.GOOS != "darwin" {
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return
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}
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if getContainerEngine() != "podman" {
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return
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}
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out, err := exec.Command("podman", "machine", "list", "--format", "json").Output()
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if err != nil {
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log.Printf("ensurePodmanMachineDNS: cannot list machines: %v", err)
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return
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}
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var machines []podmanMachine
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if err := json.Unmarshal(out, &machines); err != nil {
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log.Printf("ensurePodmanMachineDNS: cannot parse machine list: %v", err)
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return
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}
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for _, m := range machines {
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if !m.Running {
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continue
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}
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if err := configurePodmanMachineDNS(m.Name); err != nil {
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log.Printf("ensurePodmanMachineDNS: failed for %s: %v", m.Name, err)
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} else {
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log.Printf("ensurePodmanMachineDNS: DNS configured for %s", m.Name)
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}
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}
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}
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func configurePodmanMachineDNS(name string) error {
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cmd := exec.Command(
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"podman", "machine", "ssh", name,
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"sudo", "sh", "-c",
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"echo nameserver 8.8.8.8 > /etc/resolv.conf && echo nameserver 1.1.1.1 >> /etc/resolv.conf",
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)
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hideWindow(cmd)
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out, err := cmd.CombinedOutput()
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if err != nil {
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return fmt.Errorf("%w: %s", err, string(out))
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}
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return nil
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}
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