kubespray/roles/etcd/defaults/main.yml

---
# Set to false to only do certificate management
etcd_cluster_setup: true

etcd_backup_prefix: "/var/backups"
etcd_data_dir: "/var/lib/etcd"
etcd_events_data_dir: "/var/lib/etcd-events"

etcd_config_dir: /etc/ssl/etcd
etcd_cert_dir: "{{ etcd_config_dir }}/ssl"
etcd_cert_group: root
# Note: This does not set up DNS entries. It simply adds the following DNS
# entries to the certificate
etcd_cert_alt_names:
  - "etcd.{{ system_namespace }}.svc.{{ dns_domain }}"
  - "etcd.{{ system_namespace }}.svc"
  - "etcd.{{ system_namespace }}"
  - "etcd"

etcd_script_dir: "{{ bin_dir }}/etcd-scripts"

etcd_heartbeat_interval: "250"
etcd_election_timeout: "5000"

etcd_metrics: "basic"

# Limits
# Limit memory only if <4GB memory on host. 0=unlimited
etcd_memory_limit: "{% if ansible_memtotal_mb < 4096 %}512M{% else %}0{% endif %}"

# Uncomment to set CPU share for etcd
# etcd_cpu_limit: 300m

etcd_blkio_weight: 1000

etcd_node_cert_hosts: "{{ groups['k8s-cluster'] | union(groups.get('calico-rr', [])) | union(groups.get('vault', [])) }}"

etcd_compaction_retention: "8"

etcd_vault_mount_path: etcd

# Force clients like etcdctl to use TLS certs (different than peer security)
etcd_secure_client: true

# Enable peer client cert authentication
etcd_peer_client_auth: true