grpc 客户端报错： connection reset by peer

在k8s 上部署golang 的 grcp 服务端, 客户端是 php grpc 扩展 问题 : 客户端 connction reset by peer 的情况 , 利用了tcp本身的keepalive 包来保活，也修改了 net.ipv4.tcp_keepalive_time 等参数，但是还会频繁出现断连的问题，

func main() {
    grpcServer := grpc.NewServer(
        grpc.KeepaliveParams(keepalive.ServerParameters{Time: 600 * time.Second}),
        grpc.MaxConcurrentStreams(10000),
    )

    protoc.RegisterTServiceServer(grpcServer, new(handle.TImpl))
    reflection.Register(grpcServer)

    addr := startcfg.GetLisAddr()
    lis, err := net.Listen("tcp4", addr)
    if err != nil {
        panic(err)
    }

    grpcServer.Serve(lis)
}

pod中内核参数

sysctl -a|grep tcp_keepalive
net.ipv4.tcp_keepalive_intvl = 30
net.ipv4.tcp_keepalive_probes = 10
net.ipv4.tcp_keepalive_time = 600
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
sysctl: reading key "net.ipv6.conf.eth0.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"

机器上的 值也改了，求大佬给出一些思路