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有关 ETCD 模块的 13 个参数。

ETCD: 10 个参数：

参数	类型	级别	说明
`etcd_seq`	int	I	etcd 实例标识符，必需
`etcd_cluster`	string	C	etcd 集群和组名，默认为 etcd
`etcd_learner`	bool	I	防止清除运行中的 etcd 实例？
`etcd_clean`	bool	G/C/A	初始化期间清除现有 etcd？
`etcd_data`	path	C	etcd 数据目录，默认为 /data/etcd
`etcd_port`	port	C	etcd 客户端端口，默认为 2379
`etcd_peer_port`	port	C	etcd 对等端口，默认为 2380
`etcd_init`	enum	C	etcd 初始集群状态，new 或 existing
`etcd_election_timeout`	int	C	etcd 选举超时，默认为 1000ms
`etcd_heartbeat_interval`	int	C	etcd 心跳间隔，默认为 100ms

ETCD_REMOVE: 3 个参数：

参数	类型	级别	说明
`etcd_safeguard`	bool	G/C/A	防止清除运行中的 etcd 实例？
`etcd_rm_data`	bool	G/C/A	移除期间删除 etcd 数据？（默认：true）
`etcd_rm_pkg`	bool	G/C/A	移除期间卸载 etcd 包？（默认：false）

默认值

默认参数在 roles/etcd/defaults/main.yml 中定义

额外的移除参数在 roles/etcd_remove/defaults/main.yml 中定义

#-----------------------------------------------------------------
# ETCD
#-----------------------------------------------------------------
#etcd_seq: 1                      # etcd instance identifier, explicitly required
etcd_cluster: etcd                # etcd cluster & group name, etcd by default
etcd_data: /data/etcd             # etcd data directory, /data/etcd by default
etcd_learner: false               # etcd instance run as learner? false by default
etcd_port: 2379                   # etcd client port, 2379 by default
etcd_peer_port: 2380              # etcd peer port, 2380 by default
etcd_init: new                    # etcd initial cluster state, new or existing
etcd_election_timeout: 1000       # etcd election timeout, 1000ms by default
etcd_heartbeat_interval: 100      # etcd heartbeat interval, 100ms by default

ETCD_REMOVE 参数

#-----------------------------------------------------------------
# ETCD_REMOVE
#-----------------------------------------------------------------
etcd_safeguard: false             # prevent accidental removal?
etcd_rm_data: true                # remove etcd data during removal?
etcd_rm_pkg: false                # uninstall etcd packages during removal?

`etcd_seq`

名称：etcd_seq，类型：int，级别：I

etcd 实例标识符，必需

没有默认值，您必须明确指定它。这里是一个 3 节点 etcd 集群示例：

etcd: # dcs service for postgres/patroni ha consensus
  hosts:  # 1 node for testing, 3 or 5 for production
    10.10.10.10: { etcd_seq: 1 }  # etcd_seq required
    10.10.10.11: { etcd_seq: 2 }  # assign from 1 ~ n
    10.10.10.12: { etcd_seq: 3 }  # use odd numbers
  vars: # cluster level parameter override roles/etcd
    etcd_cluster: etcd  # mark etcd cluster name etcd
    etcd_safeguard: false # safeguard against purging
    etcd_clean: true # purge etcd during init process