如何連接到elixir中的mongo副本集羣

Question

我創建了一個mongo副本集，我正嘗試使用它來連接elixir。我在副本集中創建了3個mongo實例，並在/etc/hosts中給出了主機名，所以事情是在mongo終端中一切工作正常，並且能夠正確連接mongo副本集。 我在NODE.JS中編寫代碼以使用mongodb庫從副本集中獲取數據，並且它也正常工作（這意味着在mongo服務器中的配置以及我的本地服務器的狀態正如我所知的那樣），但是當我嘗試連接它時當我連接到該副本集時它會拋出錯誤。

我正在使用下面的庫來連接它。

https://github.com/ankhers/mongodb 

在圖書館筆者建議採用以下配置

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

這是拋出語法錯誤。

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

這是顯而易見的，因爲它是錯誤的。

當我使用這個配置

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：我已經改變了主機地址爲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) 

，當我使用下面的工作人員配置

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

這個錯誤出現

[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 

當我只是直接連接到這是不是副本集的 部分獨立的MongoDB服務器它可以正常工作。

# 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 

所以我被困在這裏，我不知道我在想什麼。請有人指導我如何解決這個問題，我錯了。

在此先感謝

Answer 1

經過了這麼打&試驗 而不是服務器的IP

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

我們必須給主機的名稱

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

我們也可以使用poolboy與此。