使用此行创建用于分布式培训的托管会话时：
with sv.managed_session(server.target, config=config) as sess, sess.as_default():
我在主要工作人员身上得到了这个错误（完全堆栈跟踪）：
tensorflow.python.framework.errors_impl.UnavailableError：尝试连接http1.x服务器
参数服务器上的所有内容似乎仍然没有报告：
E1106 11:26:32.844686639 5543 ev_epoll1_linux.c:1051] grpc epoll fd: 8
2017-11-06 11:26:32.851773: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize GrpcChannelCache for job ps -> {0 -> localhost:12222}
2017-11-06 11:26:32.851863: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize GrpcChannelCache for job worker -> {0 -> 127.0.0.1:12223}
2017-11-06 11:26:32.856802: I tensorflow/core/distributed_runtime/rpc/grpc_server_lib.cc:324] Started server with target: grpc://localhost:12222
我在使用从源构建的tensorflow的新v1.4时才会收到此错误（从pip安装时发现相同的问题）。在v1.3中一切正常。有谁知道是否有一个突破性的变化，我假设有关tensorflow如何与grpc一起工作？
我想知道这是否与http2 vs http1有关？我看到GRPC似乎与http2上的protobuf一起使用，这似乎表明它试图与http1连接，但仍然无法解释为什么在将v1.3升级到v1.4时会出现这种情况
是否有人知道该错误
UnavailableError：尝试连接http1.x服务器
指的是什么可能是解决方法？
我正在研究RedHat Linux并试图在同一个本地主机上的进程之间进行分布式培训......甚至没有尝试通过网络。我很感激任何想法，希望这也可以帮助其他人解决同样的问题。
完整的堆栈跟踪：
E1106 11:28:24.383745692 5787 ev_epoll1_linux.c:1051] grpc epoll fd: 8
2017-11-06 11:28:24.391084: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize
GrpcChannelCache for job ps -> {0 -> 127.0.0.1:12222}
2017-11-06 11:28:24.391185: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize
GrpcChannelCache for job worker -> {0 -> localhost:12223}
2017-11-06 11:28:24.392285: I tensorflow/core/distributed_runtime/rpc/grpc_server_lib.cc:324] Started server
with target: grpc://localhost:12223
2017-11-06 11:28:37.875632: E tensorflow/core/distributed_runtime/master.cc:269] Master init: Unavailable:
Trying to connect an http1.x server
Traceback (most recent call last):
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1323, in
_do_call
return fn(*args)
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1293, in
_run_fn
self._extend_graph()
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1354, in
_extend_graph
self._session, graph_def.SerializeToString(), status)
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/framework/errors_impl.py", line 473,
in __exit__
c_api.TF_GetCode(self.status.status))
tensorflow.python.framework.errors_impl.UnavailableError: Trying to connect an http1.x server
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/pycharm-community-2017.2.3/helpers/pydev/pydevd.py", line 1599, in <module>
globals = debugger.run(setup['file'], None, None, is_module)
File "/opt/pycharm-community-2017.2.3/helpers/pydev/pydevd.py", line 1026, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "/opt/pycharm-community-2017.2.3/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "worker.py", line 426, in <module>
main()
File "worker.py", line 418, in main
run(args, server)
File "worker.py", line 174, in run
sess.run(trainer.sync)
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 889, in run
run_metadata_ptr)
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1120, in
_run
feed_dict_tensor, options, run_metadata)
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1317, in
_do_run
options, run_metadata)
File "/app/sbtt/anaconda3/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1336, in
_do_call
raise type(e)(node_def, op, message)
tensorflow.python.framework.errors_impl.UnavailableError: Trying to connect an http1.x server
答案 0 :(得分：1)
如果您遵循@NoahEisen建议和
name你会看到更多信息如下：
export GRPC_VERBOSITY="DEBUG"
我支持代理，但我只是尝试在localhost上进行分布式培训。由于某种原因它甚至尝试通过代理连接IP 127.0.0.1应该等同于localhost吗？ IE特别注意到这一部分：
E1108 17:37:57.085195825 17711 ev_epoll1_linux.c:1051] grpc epoll fd: 5
D1108 17:37:57.085309439 17711 ev_posix.c:111] Using polling engine: epoll1
D1108 17:37:57.085380147 17711 dns_resolver.c:301] Using native dns resolver
I1108 17:37:57.085819333 17711 socket_utils_common_posix.c:223] Disabling AF_INET6 sockets because ::1 is not available.
I1108 17:37:57.086001584 17711 tcp_server_posix.c:322] Failed to add :: listener, the environment may not support IPv6: {"created":"@1510180677.085876868","description":"OS Error","errno":97,"file":"external/grpc/src/core/lib/iomgr/socket_utils_common_posix.c","file_line":256,"os_error":"Address family not supported by protocol","syscall":"socket","target_address":"[::]:12223"}
2017-11-08 17:37:57.092525: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize GrpcChannelCache for job ps -> {0 -> 127.0.0.1:12222}
2017-11-08 17:37:57.092648: I tensorflow/core/distributed_runtime/rpc/grpc_channel.cc:215] Initialize GrpcChannelCache for job worker -> {0 -> localhost:12223}
2017-11-08 17:37:57.093435: I tensorflow/core/distributed_runtime/rpc/grpc_server_lib.cc:324] Started server with target: grpc://localhost:12223
D1108 17:38:02.607109518 17830 http_proxy.c:70] userinfo found in proxy URI
I1108 17:38:02.611335569 17807 http_connect_handshaker.c:304] Connecting to server 127.0.0.1:12222 via HTTP proxy ipv4:xx.xx.xx.xx:xxxx
2017-11-08 17:38:02.617814: E tensorflow/core/distributed_runtime/master.cc:269] Master init: Unavailable: Trying to connect an http1.x server
我想这在我的python代码中很懒。 如果我将ps更改为＆＃34; localhost＆＃34;显然在集群规范而不是IP 127.0.0.1中，一切似乎在TF1.4中再次起作用，因为它没有尝试通过我的代理服务器连接到localhost（事实上，我认为只有HTTP1.x）。
@PeteWaren - 这是否构成tensorflow或grpc中的实际错误？这些注释应该等效localhost = 127.0.0.1吗？无论哪种方式，其处理方式已从TF1.3变为TF1.4
感谢大家的帮助
答案 1 :(得分：0)
回答因为我没有足够的声誉来发表评论（正在努力！）。
我怀疑这是TensorFlow问题，而不是gRPC问题，但是如果你想从gRPC看到更多的调试信息，请尝试： export GRPC_TRACE = all export GRPC_VERBOSITY = DEBUG