mirror of https://github.com/mongodb/mongo
45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
// Tests that mongos can autodiscover a config server replica set when the only node it knows about
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// is not the primary.
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import {ReplSetTest} from "jstests/libs/replsettest.js";
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let rst = new ReplSetTest({name: "configRS", nodes: 3, nodeOptions: {configsvr: "", storageEngine: "wiredTiger"}});
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rst.startSet();
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let conf = rst.getReplSetConfig();
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conf.members[1].priority = 0;
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conf.members[2].priority = 0;
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conf.writeConcernMajorityJournalDefault = true;
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rst.initiate(conf);
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let seedList = rst.name + "/" + rst.nodes[1].host; // node 1 is guaranteed to not be primary
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{
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// Ensure that mongos can start up when given the CSRS secondary, discover the primary, and
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// perform writes to the config servers.
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var mongos = MongoRunner.runMongos({configdb: seedList});
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var admin = mongos.getDB("admin");
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assert.commandWorked(admin.foo.insert({a: 1}));
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assert.eq(1, admin.foo.findOne().a);
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MongoRunner.stopMongos(mongos);
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}
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// Wait for replication to all config server replica set members to ensure that mongos
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// will be able to do majority reads when trying to verify if the initial cluster metadata
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// has been properly written.
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rst.awaitLastOpCommitted();
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// Now take down the one electable node
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rst.stop(0);
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rst.awaitNoPrimary();
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// Start a mongos when there is no primary
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var mongos = MongoRunner.runMongos({configdb: seedList});
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// Take down the one node the mongos knew about to ensure that it autodiscovered the one
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// remaining
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// config server
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rst.stop(1);
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var admin = mongos.getDB("admin");
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mongos.setSecondaryOk();
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assert.eq(1, admin.foo.findOne().a);
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MongoRunner.stopMongos(mongos);
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rst.stopSet();
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