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How to determine the ratio of master node and agent node? If I have a cluster with 20 nodes and all of them are master nodes, will there be any problems? |
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Replies: 1 comment 2 replies
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Don't do that. You shouldn't ever have more than 5, max 7, etcd nodes - as per the etcd documentation. For the control-plane, most components are leader-elected so there's not much value in having more than 2 servers. Find the number of server nodes that meets your quorum requirements, and scale them up. Scale out agent nodes to meet your workload requirements. |
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Thanks Reply! I use an external mysql database. Will too many masters affect the load of mysql? |
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That would have been a good thing to mention up front. Yes, additional servers will put additional load on the database for no substantial gain. Same as with etcd, I probably wouldn't run more than 2 or 3 masters. |
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That would have been a good thing to mention up front.
Yes, additional servers will put additional load on the database for no substantial gain. Same as with etcd, I probably wouldn't run more than 2 or 3 masters.