重启后报get proxy ops failed

codis2.0
集群能正常启动，但是dashboard.log报以下错误
2018/03/01 19:57:47 dashboard.go:97: [WARN] get proxy ops failed
[error]: Get http://ynrk-salve1:11000/debug/vars: dial tcp: lookup ynrk-salve1 on [::1]:53: read udp [::1]:48954->[::1]:53: read: connection refused
2 /opt/codis/src/github.com/CodisLabs/codis/pkg/models/proxy.go:40
github.com/CodisLabs/codis/pkg/models.(*ProxyInfo).Ops
1 /opt/codis/src/github.com/CodisLabs/codis/cmd/cconfig/dashboard.go:95
main.getAllProxyOps
0 /opt/codis/src/github.com/CodisLabs/codis/cmd/cconfig/dashboard.go:244
main.runDashboard.func2
proxy日志如下
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1009, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1010, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1011, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1012, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1013, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1014, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1015, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1016, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1017, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1018, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1019, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1020, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1021, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1022, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 router.go:167: [INFO] fill slot 1023, backend.addr = 10.166.112.9:6379
2018/03/01 19:38:37 proxy.go:120: [INFO] proxy is serving
2018/03/01 19:38:54 session.go:58: [INFO] session [0xc820246500] create: {"ops":0,"lastop":0,"create":1519904334,"remote":"10.166.112.5:57127"}
2018/03/01 19:55:46 session.go:58: [INFO] session [0xc821f54740] create: {"ops":0,"lastop":0,"create":1519905346,"remote":"10.166.112.7:56547"}
2018/03/01 19:56:47 session.go:72: [INFO] session [0xc821f54740] closed: {"ops":11,"lastop":1519905407,"create":1519905346,"remote":"10.166.112.7:56547"}, quit