Replication

mongodb 複製因套接字異常和偵聽器而失敗

  • December 18, 2021

我正在嘗試使用不同數據中心的兩台伺服器設置 mongodb 複製。出於這個問題的目的，我會說他們的 IP 地址是1.1.1.1和2.2.2.2。我在每台伺服器上使用以下命令安裝了一個乾淨的 centos8 和 mongo 版本：

yum install -y yum-utils
cat <<EOT >> /etc/yum.repos.d/mongodb-org-4.4.repo
[mongodb-org-4.4]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/8Server/mongodb-org/4.4/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.4.asc
EOT
yum install -y mongodb-org-4.4.1 mongodb-org-server-4.4.1 mongodb-org-shell-4.4.1 mongodb-org-mongos-4.4.1 mongodb-org-tools-4.4.1
mkdir -p /data/db
sed -i "s/bindIp:.*/bindIp: 0.0.0.0/g" /etc/mongod.conf
systemctl start mongod

這很好用。我可以做ssh root@1.1.1.1，然後我可以執行從伺服器mongo --host 2.2.2.2進入伺服器的 mongo cli 。我也可以並執行從伺服器進入 mongo cli 。2.2.2.2``1.1.1.1``ssh root@2.2.2.2``mongo --host 1.1.1.1``server 1.1.1.1``2.2.2.2

接下來，我ssh root@1.1.1.1。然後我執行命令：

mongod --auth --replSet "rs0" --bind_ip localhost,2.2.2.2

但這失敗了，並給出了以下輸出：

[root@li1953-23 ~]# mongod --auth --replSet "rs0" --bind_ip localhost,2.2.2.2
{"t":{"$date":"2020-11-15T01:27:26.192+00:00"},"s":"I",  "c":"CONTROL",  "id":23285,   "ctx":"main","msg":"Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'"}
{"t":{"$date":"2020-11-15T01:27:26.197+00:00"},"s":"W",  "c":"ASIO",     "id":22601,   "ctx":"main","msg":"No TransportLayer configured during NetworkInterface startup"}
{"t":{"$date":"2020-11-15T01:27:26.198+00:00"},"s":"I",  "c":"NETWORK",  "id":4648601, "ctx":"main","msg":"Implicit TCP FastOpen unavailable. If TCP FastOpen is required, set tcpFastOpenServer, tcpFastOpenClient, and tcpFastOpenQueueSize."}
{"t":{"$date":"2020-11-15T01:27:26.198+00:00"},"s":"W",  "c":"ASIO",     "id":22601,   "ctx":"main","msg":"No TransportLayer configured during NetworkInterface startup"}
{"t":{"$date":"2020-11-15T01:27:26.199+00:00"},"s":"I",  "c":"STORAGE",  "id":4615611, "ctx":"initandlisten","msg":"MongoDB starting","attr":{"pid":130556,"port":27017,"dbPath":"/data/db","architecture":"64-bit","host":"li1953-23"}}
{"t":{"$date":"2020-11-15T01:27:26.199+00:00"},"s":"I",  "c":"CONTROL",  "id":23403,   "ctx":"initandlisten","msg":"Build Info","attr":{"buildInfo":{"version":"4.4.1","gitVersion":"ad91a93a5a31e175f5cbf8c69561e788bbc55ce1","openSSLVersion":"OpenSSL 1.1.1c FIPS  28 May 2019","modules":[],"allocator":"tcmalloc","environment":{"distmod":"rhel80","distarch":"x86_64","target_arch":"x86_64"}}}}
{"t":{"$date":"2020-11-15T01:27:26.199+00:00"},"s":"I",  "c":"CONTROL",  "id":51765,   "ctx":"initandlisten","msg":"Operating System","attr":{"os":{"name":"CentOS Linux release 8.2.2004 (Core) ","version":"Kernel 4.18.0-193.14.2.el8_2.x86_64"}}}
{"t":{"$date":"2020-11-15T01:27:26.199+00:00"},"s":"I",  "c":"CONTROL",  "id":21951,   "ctx":"initandlisten","msg":"Options set by command line","attr":{"options":{"net":{"bindIp":"localhost,2.2.2.2"},"replication":{"replSet":"rs0"},"security":{"authorization":"enabled"}}}}
{"t":{"$date":"2020-11-15T01:27:26.200+00:00"},"s":"E",  "c":"STORAGE",  "id":20568,   "ctx":"initandlisten","msg":"Error setting up listener","attr":{"error":{"code":9001,"codeName":"SocketException","errmsg":"Cannot assign requested address"}}}
{"t":{"$date":"2020-11-15T01:27:26.200+00:00"},"s":"I",  "c":"REPL",     "id":4784900, "ctx":"initandlisten","msg":"Stepping down the ReplicationCoordinator for shutdown","attr":{"waitTimeMillis":10000}}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"COMMAND",  "id":4784901, "ctx":"initandlisten","msg":"Shutting down the MirrorMaestro"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"SHARDING", "id":4784902, "ctx":"initandlisten","msg":"Shutting down the WaitForMajorityService"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"NETWORK",  "id":4784905, "ctx":"initandlisten","msg":"Shutting down the global connection pool"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"REPL",     "id":4784907, "ctx":"initandlisten","msg":"Shutting down the replica set node executor"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"NETWORK",  "id":4784918, "ctx":"initandlisten","msg":"Shutting down the ReplicaSetMonitor"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"SHARDING", "id":4784921, "ctx":"initandlisten","msg":"Shutting down the MigrationUtilExecutor"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"CONTROL",  "id":4784925, "ctx":"initandlisten","msg":"Shutting down free monitoring"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"FTDC",     "id":4784926, "ctx":"initandlisten","msg":"Shutting down full-time data capture"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"STORAGE",  "id":4784927, "ctx":"initandlisten","msg":"Shutting down the HealthLog"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"STORAGE",  "id":4784929, "ctx":"initandlisten","msg":"Acquiring the global lock for shutdown"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"-",        "id":4784931, "ctx":"initandlisten","msg":"Dropping the scope cache for shutdown"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"CONTROL",  "id":20565,   "ctx":"initandlisten","msg":"Now exiting"}
{"t":{"$date":"2020-11-15T01:27:26.201+00:00"},"s":"I",  "c":"CONTROL",  "id":23138,   "ctx":"initandlisten","msg":"Shutting down","attr":{"exitCode":48}}

在解決此問題之前，我無法繼續學習有關如何設置複製的 mongodb 教程。我做錯了什麼，我該如何解決？

額外 - 2020-11-16 06:30

我也嘗試ssh root@1.1.1.1然後mongo在1.1.1.1. 然後我執行了這個命令：

rs.initiate( {
_id :  "rs0",
members: [
{ _id:  0, host:  "1.1.1.1:27017" },
{ _id:  1, host:  "2.2.2.2:27017" }
]
})

這給出了錯誤：

{
       "ok" : 0,
       "errmsg" : "This node was not started with the replSet option",
       "code" : 76,
       "codeName" : "NoReplicationEnabled"
}

額外 2020-11-16 0900

通過使用--bind-ip 0.0.0.0and ，我取得了一些小小的進步--db-path /var/lib/mongo。我所做的是

ssh root@1.1.1.1
systemctl stop mongod
rm -f /tmp/mongodb-27017.sock #this file doesn't seem to delete itself after shutdown
chown -R mongod:mongod /var/lib/mongo* #for some reason, permissions are set to root after
mongod --auth --dbpath /var/lib/mongo --replSet "rs0" --bind_ip 0.0.0.0

我的報告 mongod 的終端視窗1.1.1.1正在執行，我必須讓這個視窗保持打開狀態以保持活動狀態。我還確保 mongod 正常執行在我2.2.2.2的systemctl start mongod.

現在我打開一個新的終端視窗並執行以下操作：

ssh root@1.1.1.1
mongo #enter mongo cli
rs.initiate( {
_id :  "rs0",
members: [
{ _id:  0, host:  "1.1.1.1:27017" },
{ _id:  1, host:  "2.2.2.2:27017" }
]
})

但這會導致以下錯誤：

rs.initiate( { _id :  "rs0", members: [ { _id:  0, host:  "1.1.1.1:27017" }, { _id:  1, host:  "2.2.2.2:27017" } ] });
{
       "ok" : 0,
       "errmsg" : "replSetInitiate quorum check failed because not all proposed set members responded affirmatively: 2.2.2.2:27017 failed with not running with --replSet",
       "code" : 74,
       "codeName" : "NodeNotFound"
}

當您使用mongod（和不使用dbpath選項）啟動 MongoDB 服務時，將使用預設的 dbPath /data/db。

但是，當您啟動 MongoDB 服務時，systemctl start mongod它會讀取配置文件/etc/mongod.conf，並在此配置文件dbPath中設置為/var/lib/mongodb（或類似）

您必須使用相同的 dbPath！

檢查cd /tmp文件夾裡面，一定有socket文件，檢查權限。並嘗試在 VM 之外連接該輔助節點。

引用自：https://dba.stackexchange.com/questions/279706

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