Term
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Definition
- Kubeadm for OnPrem
- GKE for GCP
- Kops for AWS
- AKS for Azure |
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Term
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Definition
- kube-controller-manager & kube-scheduler
- leader-elect true
- leader-elect-lease-duration 15s
- leader-elect-renew-deadline 10s
- leader-elect-retry-period 2s |
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Term
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Definition
- Uses RAFT
- elect leader
- leader periodically announces leadership
- if announcement not recvd, new leader elected
- Only leader can write
- non-leader nodes forward to leader
- a write is successful if completed on majority
- n/2 + 1 = quorum
- 1 an 2 nodes have quorum 1 & 2 and therefore no quorum
- choose odd quorum to avoid failure if NW segments to even number
- etcd.service
- --initial-cluster
- list of peers (e.g. https//) |
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Term
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Definition
- stacked
- on master, easier setup & fail
- external
- on own node, harder harder setup & fail |
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