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In a sharded cluster, from which node does one stop the balancer process before initiating backup?
Suggested Answer: D
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35 comments · newest first
EV
Eva
10 months ago
Really? I always thought it was the mongos node.
JA
Jade
10 months ago
Definitely B, the primary node is crucial!
KA
Katie
10 months ago
Wait, I thought it was any node?
SH
Sheridan
10 months ago
No way, it’s the config server for sure.
SA
Salley
11 months ago
You stop the balancer on the config server node.
AS
Asha
11 months ago
I’m a bit confused; I thought it was the mongos node, but now I’m second-guessing myself after reviewing the material.
VE
Vernice
11 months ago
I feel like it could be any node, but I think the config server is the most common answer for these types of questions.
ST
Stephania
11 months ago
I remember practicing a question about stopping the balancer, and it might have been related to the primary node.
LI
Linwood
12 months ago
I think we need to stop the balancer on the config server node, but I'm not entirely sure.
PA
Paulina
12 months ago
I remember from the MongoDB documentation that the balancer process is managed by the mongos nodes, which route client requests to the appropriate shards. So I think the answer is D, the mongos node.
LI
Ligia
12 months ago
The question mentions a "sharded cluster", so I'm guessing the balancer is running on one of the nodes in the cluster. My best guess would be the primary node of the replica set, since that's where the cluster coordination happens.
RO
Roslyn
1 year ago
Hmm, I'm not entirely sure about this one. I know the balancer is responsible for distributing data across the shards, but I'm not certain which node controls it. I'll have to think this through carefully.
BU
Bulah
1 year ago
I think the balancer process is managed at the config server level, so I'd stop it on the config server node before doing the backup.
EL
Elvera
1 year ago
I'm not sure, but I think it could be A) Any node, since any node can perform the balancer process.
VA
Valentine
1 year ago
I believe it's D) mongos node, as it's responsible for routing queries to the appropriate shard.
BE
Beatriz
1 year ago
Honestly, I'm just glad the question didn't involve configuring a cron job on a Solaris machine. That would have been a real head-scratcher.
WI
Willard
1 year ago
D) mongos node
DA
Dallas
1 year ago
C) config server node
VA
Vashti
1 year ago
A) Any node
PE
Pearline
1 year ago
I agree with Aretha, because config server node manages the sharding metadata.
DE
Deonna
1 year ago
Hmm, I'm torn between B and D. Maybe I should just flip a coin. Or, you know, actually study the material instead of relying on luck.
DI
Dierdre
1 year ago
You should definitely study the material instead of relying on luck.
WE
Wendell
1 year ago
I believe it's B) replicaset primary node.
EL
Ellen
1 year ago
I think it's D) mongos node.
RE
Reed
1 year ago
I'm going with C. The config server is the brain of the sharded cluster, so that's gotta be the node to stop the balancer on.
JO
Johana
1 year ago
I'm not sure, but I think it's safest to stop the balancer on the config server node.
SO
Socorro
1 year ago
I think it's C too. The config server manages the metadata for the sharded cluster.
AR
Aretha
1 year ago
I think it's C) config server node.
GL
Glory
1 year ago
D seems like the right choice to me. The mongos node is the entry point for the cluster, so that's where you'd want to stop the balancer.
MA
Makeda
1 year ago
Yes, that's right. The mongos node is responsible for routing queries in a sharded cluster.
AL
Alva
1 year ago
I think D is correct too. The mongos node is where the balancer should be stopped.
CA
Carin
1 year ago
I think the answer is B. The primary node in the replica set is the one responsible for balancing the data, so it makes sense to stop the balancer there before taking a backup.
SH
Sharmaine
1 year ago
I always stop the balancer on the config server node before taking a backup.
RA
Raymon
1 year ago
Actually, I think it's better to stop the balancer on any node in the sharded cluster.
MA
Malinda
1 year ago
I agree, stopping the balancer on the primary node is the way to go.