我正在尝试连接到在 4 个容器下运行的 mongodb 副本集：3 个 mongo 作为集群，1 个向其他人发出 mongo 命令。
在这里，我不知道如何使用mongodb url将其连接到我的应用程序。
docker-compose.yml是
mongo3:
image: mongo:latest
hostname: mongo3
expose:
- "27017"
- "28017"
restart: always
entrypoint: [ "/usr/bin/mongod", "--replSet", "rs"]
mongo2:
image: mongo:latest
hostname: mongo2
expose:
- "27017"
- "28017"
restart: always
entrypoint: [ "/usr/bin/mongod", "--replSet", "rs"]
mongo1:
image: mongo:latest
hostname: mongo1
expose:
- "27017"
- "28017"
links:
- mongo2:mongo2
- mongo3:mongo3
restart: always
entrypoint: [ "/usr/bin/mongod", "--replSet", "rs"]
mongosetup:
image: mongo:latest
links:
- mongo1:mongo1
- mongo2:mongo2
- mongo3:mongo3
volumes:
- ./scripts:/scripts
- ./data/runtime/db:/data/db
- ./data/dump:/dump
restart: always
entrypoint: [ "bash", "/scripts/mongo_setup.sh" ]
app:
image: papagari/swoop.chat:latest
environment:
- MONGO_URL=mongodb://mongo1:27017,mongo2:27017,mongo3:27017/swoop?replicaSet=rs
- ROOT_URL=https://localhost:3000
links:
- mongo1:mongo1
- mongo2:mongo2
- mongo3:mongo3
ports:
- 3000:3000
/scripts/mongo_setup.sh是
MONGODB1=`ping -c 1 mongo1 | head -1 | cut -d "(" -f 2 | cut -d ")" -f 1`
MONGODB2=`ping -c 1 mongo2 | head -1 | cut -d "(" -f 2 | cut -d ")" -f 1`
MONGODB3=`ping -c 1 mongo3 | head -1 | cut -d "(" -f 2 | cut -d ")" -f 1`
echo "Waiting for startup.."
until curl http://${MONGODB1}:28017/serverStatus?text=1 2>&1 | grep uptime | head -1; do
printf '.'
sleep 1
done
echo curl http://${MONGODB1}:28017/serverStatus?text=1 2>&1 | grep uptime | head -1
echo "Started.."
sleep 10
echo SETUP.sh time now: `date +"%T" `
mongo --host ${MONGODB1}:27017 <<EOF
var cfg = {
"_id": "rs",
"version": 1,
"members": [
{
"_id": 0,
"host": "${MONGODB1}:27017",
"priority": 2
},
{
"_id": 1,
"host": "${MONGODB2}:27017",
"priority": 0
},
{
"_id": 2,
"host": "${MONGODB3}:27017",
"priority": 0
}
]
};
rs.initiate(cfg, { force: true });
rs.reconfig(cfg, { force: true });
db.getMongo().setReadPref('nearest');
EOF
现在我收到一个错误mongodb://mongo1:27017,mongo2:27017,mongo3:27017/swoop?replicaSet=rs 显然failed to connect to server因为我使用的网址无效。我是第一次接触 docker 和 mongo db 副本集的新手，试图在这里了解 docker。它应该如何工作。
错误： MongoError: no primary found in replicaset .
完全错误：
app_1 |
app_1 | /app/bundle/programs/server/node_modules/fibers/future.js:313
app_1 | throw(ex);
app_1 | ^
app_1 | MongoError: no primary found in replicaset
app_1 | at Object.Future.wait (/app/bundle/programs/server/node_modules/fibers/future.js:449:15)
app_1 | at new MongoConnection (packages/mongo/mongo_driver.js:216:27)
app_1 | at new MongoInternals.RemoteCollectionDriver (packages/mongo/remote_collection_driver.js:4:16)
app_1 | at Object.<anonymous> (packages/mongo/remote_collection_driver.js:38:10)
app_1 | at Object.defaultRemoteCollectionDriver (packages/underscore/underscore.js:750:1)
app_1 | at new Mongo.Collection (packages/mongo/collection.js:103:40)
app_1 | at AccountsServer.AccountsCommon (packages/accounts-base/accounts_common.js:23:18)
app_1 | at new AccountsServer (packages/accounts-base/accounts_server.js:18:5)
app_1 | at meteorInstall.node_modules.meteor.accounts-base.server_main.js (packages/accounts-base/server_main.js:9:12)
app_1 | at fileEvaluate (packages/modules-runtime/.npm/package/node_modules/install/install.js:153:1)
app_1 | - - - - -
app_1 | at /app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb-core/lib/topologies/replset.js:631:32
app_1 | at [object Object].<anonymous> (/app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb-core/lib/topologies/replset.js:421:24)
app_1 | at [object Object].g (events.js:260:16)
app_1 | at emitOne (events.js:77:13)
app_1 | at [object Object].emit (events.js:169:7)
app_1 | at /app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb-core/lib/topologies/server.js:283:14
app_1 | at /app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb-core/lib/connection/pool.js:436:18
app_1 | at nextTickCallbackWith0Args (node.js:420:9)
app_1 | at process._tickCallback (node.js:349:13)
我已经搜索了很多地方，我得到的只是本地机器或服务器机器而不是码头工人链接。
更新mongo1 容器中rs.status()的响应，看起来很好，主要和次要都正确初始化。
{
"set" : "rs",
"date" : ISODate("2016-10-19T06:31:10.861Z"),
"myState" : 1,
"term" : NumberLong(1),
"heartbeatIntervalMillis" : NumberLong(2000),
"members" : [
{
"_id" : 0,
"name" : "172.17.0.4:27017",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 62,
"optime" : {
"ts" : Timestamp(1476858630, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2016-10-19T06:30:30Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1476858629, 1),
"electionDate" : ISODate("2016-10-19T06:30:29Z"),
"configVersion" : 13918,
"self" : true
},
{
"_id" : 1,
"name" : "172.17.0.3:27017",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 51,
"optime" : {
"ts" : Timestamp(1476858630, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2016-10-19T06:30:30Z"),
"lastHeartbeat" : ISODate("2016-10-19T06:31:09.633Z"),
"lastHeartbeatRecv" : ISODate("2016-10-19T06:31:10.291Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.17.0.2:27017",
"configVersion" : 13918
},
{
"_id" : 2,
"name" : "172.17.0.2:27017",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 51,
"optime" : {
"ts" : Timestamp(1476858630, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2016-10-19T06:30:30Z"),
"lastHeartbeat" : ISODate("2016-10-19T06:31:09.633Z"),
"lastHeartbeatRecv" : ISODate("2016-10-19T06:31:09.283Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.17.0.4:27017",
"configVersion" : 13918
}
],
"ok" : 1
}
任何提示都会有所帮助。蒂亚
正如您在评论中所说，当您复制集配置正常时，您的app可能与其他一起启动，并且在配置副本集之前，它会中断。
可以尝试在应用配置上使用depends_on，这将使app容器在其他容器之后启动。但请注意，这可能不起作用，因为它会等到容器准备就绪，而不是等到配置副本集。
如果这不起作用，我认为最简单的方法是在运行 docker-compose 后单独启动app。