如何连接到elixir中的mongo副本集群

Question

我创建了一个mongo副本集，我正尝试使用它来连接elixir。我在副本集中创建了3个mongo实例，并在/etc/hosts中给出了主机名，所以事情是在mongo终端中一切工作正常，并且能够正确连接mongo副本集。 我在NODE.JS中编写代码以使用mongodb库从副本集中获取数据，并且它也正常工作（这意味着在mongo服务器中的配置以及我的本地服务器的状态正如我所知的那样），但是当我尝试连接它时当我连接到该副本集时它会抛出错误。

我正在使用下面的库来连接它。

https://github.com/ankhers/mongodb 

在图书馆笔者建议采用以下配置

{:ok, pid} = Mongo.start_link(database: "test", seeds: "hostname1.net:27017", "hostname2.net:27017") 

这是抛出语法错误。

** (SyntaxError) iex:6: syntax error before: "hostname2.net:27017" 

这是显而易见的，因为它是错误的。

当我使用这个配置

worker(Mongo, [[name: :mongo,database: "yatender", topology: "replica_set_no_primary",seeds: ["xxx.xxx.xxx.xxx:27017","xxx.xxx.xxx.xxx:27017","xxx.xxx.xxx.xxx:27017"] ,pool: DBConnection.Poolboy]]) 

注：我已经改变了主机地址为XXX所以不要混淆了。

GenServer #PID<0.1436.0> terminating 
** (stop) exited in: GenServer.call(#PID<0.1410.0>, 
{:server_description, %{address: "xxx.xxx.xxx.xxx:27017", arbiters: [], 
election_id: nil, error: nil, hosts: ["mongo.host1:27017", 
"mongo.host2:27017", "mongo.host3:27017"], 
last_update_time: -576460750248, last_write_date: %DateTime{calendar: 
Calendar.ISO, day: 26, hour: 6, microsecond: {0, 3}, minute: 47, month: 
7, second: 23, std_offset: 0, time_zone: "Etc/UTC", utc_offset: 0, 
year: 2017, zone_abbr: "UTC"}, max_wire_version: 5, me: 
"mongo.host3:27027", min_wire_version: 0, op_time: %{"t" => 
2, "ts" => #BSON.Timestamp<6446967716292067329>}, passives: [], 
primary: "mongo.host2:27017", round_trip_time: 240, set_name: 
"rs0", set_version: 4, tag_set: %{}, type: :rs_secondary}}, 30000) 

，当我使用下面的工作人员配置

{:ok, pid} = Mongo.start_link(database: "yatender", seeds: ["xxx.xxx.xxx.xxx:27017","xxx.xxx.xxx.xxx:27017","xxx.xxx.xxx.xxx:27017"]) 

这个错误出现

[warn] Logger dropped 999 OTP/SASL messages as it exceeded the amount of 500 messages/second                      
** (EXIT from #PID<0.1410.0>) exited in: GenServer.call(#PID<0.1415.0>, 
{:server_description, %{address: "xxx.xxx.xxx.xxx:27017", arbiters: [], 
election_id: nil, error: nil, hosts: ["mongo.host1:27017", 
"mongo.host2:27017", "mongo.host3:27027"], 
last_update_time: -576460688733, last_write_date: %DateTime{calendar: 
Calendar.ISO, day: 26, hour: 6, microsecond: {0, 3}, minute: 58, month: 
7, second: 13, std_offset: 0, time_zone: "Etc/UTC", utc_offset: 0, 
year: 2017, zone_abbr: "UTC"}, max_wire_version: 5, me: 
"mongo.host1:27017", min_wire_version: 0, op_time: %{"t" => 2, 
"ts" => #BSON.Timestamp<6446970508020809729>}, passives: [], primary: 
"mongo.host2:27017", round_trip_time: 42, set_name: "rs0", 
set_version: 4, tag_set: %{}, type: :rs_secondary}}, 30000) 
** (EXIT) time out 

当我只是直接连接到这是不是副本集的 部分独立的MongoDB服务器它可以正常工作。

# Starts an unpooled connection 
{:ok, conn} = Mongo.start_link(database: "test",hostname: Application.get_env(:api, :api_env)[:mongo_host]) 

# Gets an enumerable cursor for the results 
cursor = Mongo.find(conn, "test-collection", %{}) 

cursor 
|> Enum.to_list() 
|> IO.inspect 

所以我被困在这里，我不知道我在想什么。请有人指导我如何解决这个问题，我错了。

在此先感谢

Answer 1

经过了这么打&试验 而不是服务器的IP

{:ok, pid} = Mongo.start_link(database: "yatender", seeds: ["xxx.xxx.xxx.xxx:27017","xxx.xxx.xxx.xxx:27017","xxx.xxx.xxx.xxx:27017"]) 

我们必须给主机的名称

{:ok, pid} = Mongo.start_link(database: "yatender", seeds: ["mongo.host1:27017","mongo.host2:27017","mongo.host3:27017"]) 

我们也可以使用poolboy与此。