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feat: retry dns query

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This commit is contained in:
fengcaiwen
2022-12-14 21:57:31 +08:00
parent dac083e7b3
commit a07b5cae2e
6 changed files with 95 additions and 122 deletions
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8
pkg/dns/dns_unix.go
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@@ -32,15 +32,15 @@ var resolv = "/etc/resolv.conf"
// service.namespace.svc:port
// service.namespace.svc.cluster:port
// service.namespace.svc.cluster.local:port
func SetupDNS(config *miekgdns.ClientConfig) error {
usingResolver(config)
func SetupDNS(config *miekgdns.ClientConfig, ns []string) error {
usingResolver(config, ns)
_ = exec.Command("killall", "mDNSResponderHelper").Run()
_ = exec.Command("killall", "-HUP", "mDNSResponder").Run()
_ = exec.Command("dscacheutil", "-flushcache").Run()
return nil
}
func usingResolver(clientConfig *miekgdns.ClientConfig) {
func usingResolver(clientConfig *miekgdns.ClientConfig, ns []string) {
var err error
_ = os.RemoveAll(filepath.Join("/", "etc", "resolver"))
if err = os.MkdirAll(filepath.Join("/", "etc", "resolver"), fs.ModePerm); err != nil {
@@ -70,7 +70,7 @@ func usingResolver(clientConfig *miekgdns.ClientConfig) {
Ndots: clientConfig.Ndots,
Timeout: 1,
}
for _, s := range strings.Split(clientConfig.Search[0], ".") {
for _, s := range sets.NewString(strings.Split(clientConfig.Search[0], ".")...).Insert(ns...).List() {
filename = filepath.Join("/", "etc", "resolver", s)
_ = ioutil.WriteFile(filename, []byte(toString(config)), 0644)
}