网络调试
dig @10.32.0.2 saythx-redis.work.svc.cluster.local +noall +answer
host -t srv saythx-redis.work
nslookup kubernetes.default
dig @10.32.0.2 saythx-redis.work.svc.cluster.local +noall +answer
host -t srv saythx-redis.work
nslookup kubernetes.default