How many replicate sets should I have in MongoDB?

How many replicate sets should I have in MongoDB?

For config server replica sets (CSRS), the best practice is to distribute across three (or more depending on the number of members) centers.

Can a remote client connect to MongoDB 3.6?

When bound only to the localhost, these MongoDB 3.6 binaries can only accept connections from clients (including the mongo shell, other members in your deployment for replica sets and sharded clusters) that are running on the same machine. Remote clients cannot connect to the binaries bound only to localhost.

When to start a mongod instance in the cloud?

If the cost of the third data center is prohibitive, one distribution possibility is to evenly distribute the data bearing members across the two data centers and store the remaining member in the cloud if your company policy allows. For each member, start a mongod instance with the following settings:

Where does MongoDB binary bind to localhost?

If the net.ipv6 configuration file setting or the –ipv6 command line option is set for the binary, the binary additionally binds to the localhost IPv6 address.

Can you change the number of votes in a replica set?

Do not alter the number of votes to control which members will become primary. Instead, modify the members [n].priority option. Only alter the number of votes in exceptional cases. For example, to permit more than seven members. To configure a non-voting member, see Configure Non-Voting Replica Set Member.

Can a replica set have more than one arbiter?

In general, avoid deploying more than one arbiter per replica set. Fault tolerance for a replica set is the number of members that can become unavailable and still leave enough members in the set to elect a primary.

Can a replica set member become a primary member?

Members with a priority value of 0 cannot become primary and do not seek election. For details, see Priority 0 Replica Set Members. Starting in version 4.4, MongoDB provides mirrored reads to pre-warm electable secondary members’ cache with the most recently accessed data.