kubespray/roles/kubernetes/control-plane/defaults/main/etcd.yml

---
# Set etcd user/group
etcd_owner: etcd

# Note: This does not set up DNS entries. It simply adds the following DNS
# entries to the certificate
etcd_cert_alt_names:
  - "etcd.kube-system.svc.{{ dns_domain }}"
  - "etcd.kube-system.svc"
  - "etcd.kube-system"
  - "etcd"
etcd_cert_alt_ips: []

etcd_heartbeat_interval: "250"
etcd_election_timeout: "5000"

# etcd_snapshot_count: "10000"

etcd_metrics: "basic"

## A dictionary of extra environment variables to add to etcd.env, formatted like:
##  etcd_extra_vars:
##    var1: "value1"
##    var2: "value2"
## Note this is different from the etcd role with ETCD_ prfexi, caps, and underscores
etcd_extra_vars: {}

# etcd_quota_backend_bytes: "2147483648"
# etcd_max_request_bytes: "1572864"

etcd_compaction_retention: "8"