# Set the timeout to initiate the recovery process, once the N nodes
# from previous setting are up (accepts time value):
# 设置初始化恢复过程的超时时间，超时时间从上一个配置中配置的N个节点启动后算起
#
# gateway.recover_after_time: 5m
# Set how many nodes are expected in this cluster. Once these N nodes
# are up (and recover_after_nodes is met), begin recovery process immediately
# (without waiting for recover_after_time to expire):
# 设置这个集群中期望有多少个节点。一旦这N个节点启动(并且recover_after_nodes也符合)，
# 立即开始恢复过程(不等待recover_after_time超时)
#
# gateway.expected_nodes: 2
############################# Recovery Throttling (节点恢复限流阀) #############################
# These settings allow to control the process of shards allocation between
# nodes during initial recovery, replica allocation, rebalancing,
# or when adding and removing nodes.
# 这些配置允许在初始化恢复，副本分配，再平衡，或者添加和删除节点时控制节点间的分片分配
#
# Set the number of concurrent recoveries happening on a node:
# 设置一个节点的并行恢复数
#
# 1. During the initial recovery
# 1. 初始化恢复期间
#
# cluster.routing.allocation.node_initial_primaries_recoveries: 4
#
# 2. During adding/removing nodes, rebalancing, etc
# 2. 添加/删除节点，再平衡等期间
#
# cluster.routing.allocation.node_concurrent_recoveries: 2
# Set to throttle throughput when recovering (eg. 100mb, by default unlimited):
# 设置恢复时的吞吐量（例如，100mb，默认没有上限）
#
# indices.recovery.max_size_per_sec: 0
# Set to limit the number of open concurrent streams when
# recovering a shard from a peer:
# 设置当一个分片从对等点恢复时能够打开的并发流的上限
#
# indices.recovery.concurrent_streams: 5
################################## Discovery(探查) ##################################
# Discovery infrastructure ensures nodes can be found within a cluster
# and master node is elected. Multicast discovery is the default.
# 探查机制能够保障一个集群中的节点能被找到，并且主节点能够被选举出来。
# 默认的方式为多播。
# Set to ensure a node sees N other master eligible nodes to be considered
# operational within the cluster. Set this option to a higher value (2-4)
# for large clusters (>3 nodes):
# 这个选项用来设置一个节点可以看到其他N个在集群中具有可操性的并且具有当选主节点资格的节点
# 对于大的集群(大于3个节点)，这个选项应该设置成一个高一点的值(2-4)
#
# discovery.zen.minimum_master_nodes: 1
# Set the time to wait for ping responses from other nodes when discovering.
# Set this option to a higher value on a slow or congested network
# to minimize discovery failures:
# 设置在探查过程中从其他节点返回ping的回应的等待时间
# 在一个低速或者拥堵的网络环境中这个选项应该设置的大一些，这样可以降低探查失败的可能性。
#
# discovery.zen.ping.timeout: 3s
# See <>
# for more information.
# 详情见<>
# Unicast discovery allows to explicitly control which nodes will be used
# to discover the cluster. It can be used when multicast is not present,
# or to restrict the cluster communication-wise.
# 利用单播探查，我们可以显示的指定哪些节点在探查集群过程中会被用到。
# 当多播不可用，或者需要约束集群的通信时可以使用单播探查。
#
# 1. Disable multicast discovery (enabled by default):
# 1. 禁用多播探查(默认可用)
#
# discovery.zen.ping.multicast.enabled: false
#
# 2. Configure an initial list of master nodes in the cluster
# to perform discovery when new nodes (master or data) are started:
# 2. 这是一个集群中的主节点的初始列表，当节点(主节点或者数据节点)启动时使用这个列表进行探查
#
#
# discovery.zen.ping.unicast.hosts: ["host1", "host2:port", "host3[portX-portY]"]