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13 lines
445 B
13 lines
445 B
5 years ago
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# connect to PRIMARY
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mongo
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> rs.initiate()
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> rs.status()
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> rs.add("mongo_node2")
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> rs.add("mongo_node3")
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> rs.status()
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> rs.isMaster()
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#You now have a working MongoDB replication.
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#You can increase the cluster size from *three* nodes to *five* nodes, *seven* nodes or more.
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#This number is calculated from: [Master Eligible Nodes) / 2 + 1], which means an odd number of nodes is required for high availability, the minimum number is *three*.
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