##################### Elasticsearch Configuration Example #####################

# This file contains an overview of various configuration settings,
# targeted at operations staff. Application developers should
# consult the guide at <http://elasticsearch.org/guide>.
#
# The installation procedure is covered at
# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/setup.html>.
#
# Elasticsearch comes with reasonable defaults for most settings,
# so you can try it out without bothering with configuration.
#
# Most of the time, these defaults are just fine for running a production
# cluster. If you're fine-tuning your cluster, or wondering about the
# effect of certain configuration option, please _do ask_ on the
# mailing list or IRC channel [http://elasticsearch.org/community]. # Any element in the configuration can be replaced with environment variables
# by placing them in ${...} notation. For example:
#所有的配置都可以使用环境变量,例如
#node.rack: ${RACK_ENV_VAR} # For information on supported formats and syntax for the config file, see
# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/setup-configuration.html> ################################### Cluster ################################### # Cluster name identifies your cluster for auto-discovery. If you're running
# multiple clusters on the same network, make sure you're using unique names.
# 集群名称,默认为elasticsearch
#cluster.name: elasticsearch #################################### Node ##################################### # Node names are generated dynamically on startup, so you're relieved
# from configuring them manually. You can tie this node to a specific name:
#节点名称,es启动时会自动创建节点名称,但你也可进行配置
#这些名称默认是在es的lib目录下的elasticsearch-1.4..jar文件中的config目录下的names.txt文件中
#node.name: "Franz Kafka" # Every node can be configured to allow or deny being eligible as the master,
# and to allow or deny to store the data.
#
# Allow this node to be eligible as a master node (enabled by default):
#是否作为主节点,每个节点都可以被配置成为主节点,默认值为true:
#node.master: true
#
# Allow this node to store data (enabled by default):
#是否存储数据,即存储索引片段,默认值为true
#node.data: true # You can exploit these settings to design advanced cluster topologies.
#当master为false,而data为true时,会对该节点产生严重负荷;
# . You want this node to never become a master node, only to hold data.
# This will be the "workhorse" of your cluster.
#
#node.master: false
#node.data: true
#当master为true,而data为false时,该节点作为一个协调者;
# . You want this node to only serve as a master: to not store any data and
# to have free resources. This will be the "coordinator" of your cluster.
#
#node.master: true
#node.data: false
#当master为false,data也为false时,该节点就变成了一个负载均衡器。
# . You want this node to be neither master nor data node, but
# to act as a "search load balancer" (fetching data from nodes,
# aggregating results, etc.)
#
#node.master: false
#node.data: false # Use the Cluster Health API [http://localhost:9200/_cluster/health], the
# Node Info API [http://localhost:9200/_nodes] or GUI tools
# such as <http://www.elasticsearch.org/overview/marvel/>,
# <http://github.com/karmi/elasticsearch-paramedic>,
# <http://github.com/lukas-vlcek/bigdesk> and
# <http://mobz.github.com/elasticsearch-head> to inspect the cluster state. # A node can have generic attributes associated with it, which can later be used
# for customized shard allocation filtering, or allocation awareness. An attribute
# is a simple key value pair, similar to node.key: value, here is an example:
#每个节点都可以定义一些与之关联的通用属性,用于后期集群进行分片分配时的过滤:
#node.rack: rack314 # By default, multiple nodes are allowed to start from the same installation location
# to disable it, set the following:
#默认情况下,多个节点可以在同一个安装路径启动,如果你想让你的es只启动一个节点,可以进行如下设置:
#node.max_local_storage_nodes: #################################### Index #################################### # You can set a number of options (such as shard/replica options, mapping
# or analyzer definitions, translog settings, ...) for indices globally,
# in this file.
#
# Note, that it makes more sense to configure index settings specifically for
# a certain index, either when creating it or by using the index templates API.
#
# See <http://elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules.html> and
# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/indices-create-index.html>
# for more information. # Set the number of shards (splits) of an index ( by default):
#设置一个索引库的分片数量,默认值为5:
#index.number_of_shards: # Set the number of replicas (additional copies) of an index ( by default):
#设置一个索引库可被复制的数量,默认值为1:
#index.number_of_replicas: # Note, that for development on a local machine, with small indices, it usually
# makes sense to "disable" the distributed features:
#当你想要禁用分布式时,你可以进行如下设置:
#index.number_of_shards:
#index.number_of_replicas: # These settings directly affect the performance of index and search operations
# in your cluster. Assuming you have enough machines to hold shards and
# replicas, the rule of thumb is:
# 这两个属性的设置直接影响集群中索引和搜索操作的执行。假设你有足够的机器来持有分片和复制品,
# 那么可以按如下规则设置这两个值:
# . Having more *shards* enhances the _indexing_ performance and allows to
# _distribute_ a big index across machines.
#拥有更多的分片可以提升索引执行能力,并允许通过机器分发一个大型的索引;
# . Having more *replicas* enhances the _search_ performance and improves the
# cluster _availability_.
#拥有更多的复制器能够提升搜索执行能力以及集群能力。
# The "number_of_shards" is a one-time setting for an index.
#对于一个索引来说,number_of_shards只能设置一次
# The "number_of_replicas" can be increased or decreased anytime,
# by using the Index Update Settings API.
#而number_of_replicas可以使用索引更新设置API在任何时候被增加或者减少
#
# Elasticsearch takes care about load balancing, relocating, gathering the
# results from nodes, etc. Experiment with different settings to fine-tune
# your setup.
# ElasticSearch关注负载均衡、迁移、从节点聚集结果等等。可以尝试多种设计来完成这些功能。
# Use the Index Status API (<http://localhost:9200/A/_status>) to inspect
# the index status.
#可以连接http://localhost:9200/A/_status来检测索引的状态。 #################################### Paths #################################### # Path to directory containing configuration (this file and logging.yml):
#配置文件所在的位置,即elasticsearch.yml和logging.yml所在的位置:
#path.conf: /path/to/conf # Path to directory where to store index data allocated for this node.
#分配给当前节点的索引数据所在的位置:
#path.data: /path/to/data
#
# Can optionally include more than one location, causing data to be striped across
# the locations (a la RAID ) on a file level, favouring locations with most free
# space on creation. For example:
#可以可选择的包含一个以上的位置,使得数据在文件级别跨越位置,这样在创建时就有更多的自由路径,如:
#path.data: /path/to/data1,/path/to/data2 # Path to temporary files:
# 临时文件位置:
#path.work: /path/to/work # Path to log files:
#日志文件所在位置:
#path.logs: /path/to/logs # Path to where plugins are installed:
# 插件安装位置:
#path.plugins: /path/to/plugins #################################### Plugin ################################### # If a plugin listed here is not installed for current node, the node will not start.
#若列表中的某一个插件未安装,则节点无法启动:
#plugin.mandatory: mapper-attachments,lang-groovy ################################### Memory #################################### # Elasticsearch performs poorly when JVM starts swapping: you should ensure that
# it _never_ swaps.
#
# Set this property to true to lock the memory:
#JVM开始交换时,ElasticSearch表现并不好:你需要保障JVM不进行交换,可以将bootstrap.mlockall设置为true禁止交换
#bootstrap.mlockall: true # Make sure that the ES_MIN_MEM and ES_MAX_MEM environment variables are set
# to the same value, and that the machine has enough memory to allocate
# for Elasticsearch, leaving enough memory for the operating system itself.
#请确保ES_MIN_MEM和ES_MAX_MEM的值是一样的,并且能够为ElasticSearch分配足够的内在,并为系统操作保留足够的内存
# You should also make sure that the Elasticsearch process is allowed to lock
# the memory, eg. by using `ulimit -l unlimited`.
#你应该确保Elasticsearch 进程可以锁定内存。通过使用"ulimit -l unlimited" ############################## Network And HTTP ############################### # Elasticsearch, by default, binds itself to the 0.0.0.0 address, and listens
# on port [-] for HTTP traffic and on port [-] for node-to-node
# communication. (the range means that if the port is busy, it will automatically
# try the next port).
# 默认情况下,ElasticSearch使用0.0.0.0地址,并为http传输开启9200-9300端口,
# 为节点到节点的通信开启9300-9400端口,也可以自行设置IP地址
# (如果节点被占用了,es将会自动尝试使用下一个端口)
# Set the bind address specifically (IPv4 or IPv6):
#
#network.bind_host: 192.168.0.1 # Set the address other nodes will use to communicate with this node. If not
# set, it is automatically derived. It must point to an actual IP address.
# publish_host设置其他节点连接此节点的地址,如果不设置的话,则自动获取,publish_host的地址必须为真实地址
#network.publish_host: 192.168.0.1 # Set both 'bind_host' and 'publish_host':
#bind_host和publish_host可以一起设置
#network.host: 192.168.0.1 # Set a custom port for the node to node communication ( by default):
#可以定制该节点与其他节点交互的端口
#transport.tcp.port: # Enable compression for all communication between nodes (disabled by default):
#节点间交互时,可以设置是否压缩,默认为不压缩
#transport.tcp.compress: true # Set a custom port to listen for HTTP traffic:
#可以为Http传输监听定制端口
#http.port: # Set a custom allowed content length:
#设置内容的最大长度
#http.max_content_length: 100mb # Disable HTTP completely:
#禁止HTTP
#http.enabled: false ################################### Gateway ################################### # The gateway allows for persisting the cluster state between full cluster
# restarts. Every change to the state (such as adding an index) will be stored
# in the gateway, and when the cluster starts up for the first time,
# it will read its state from the gateway.
# 网关允许在所有集群重启后持有集群状态,集群状态的变更都会被保存下来,
# 当第一次启用集群时,可以从网关中读取到状态, # There are several types of gateway implementations. For more information, see
# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/modules-gateway.html>. # The default gateway type is the "local" gateway (recommended):
#默认文件类型是本地local:
#gateway.type: local # Settings below control how and when to start the initial recovery process on
# a full cluster restart (to reuse as much local data as possible when using shared
# gateway). # Allow recovery process after N nodes in a cluster are up:
#允许在N个节点启动后恢复过程
#gateway.recover_after_nodes: # 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
#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):
#设置该集群中可存在的节点上限
#gateway.expected_nodes: ############################# Recovery Throttling ############################# # These settings allow to control the process of shards allocation between
# nodes during initial recovery, replica allocation, rebalancing,
# or when adding and removing nodes. # Set the number of concurrent recoveries happening on a node:
#设置一个节点的并发数量,有两种情况,
#一种是在初始复苏过程中:
# . During the initial recovery
#
#cluster.routing.allocation.node_initial_primaries_recoveries:
#
# . During adding/removing nodes, rebalancing, etc
#另一种是在添加、删除节点及调整时:
#cluster.routing.allocation.node_concurrent_recoveries: # Set to throttle throughput when recovering (eg. 100mb, by default 20mb):
#设置复苏时的吞吐量,默认情况下是无限的
#indices.recovery.max_bytes_per_sec: 20mb # Set to limit the number of open concurrent streams when
# recovering a shard from a peer:
#设置从对等节点恢复片段时打开的流的数量上限
#indices.recovery.concurrent_streams: ################################## Discovery ################################## # Discovery infrastructure ensures nodes can be found within a cluster
# and master node is elected. Multicast discovery is the default. # Set to ensure a node sees N other master eligible nodes to be considered
# operational within the cluster. This should be set to a quorum/majority of
# the master-eligible nodes in the cluster.
#设置一个集群中主节点的数量,当多于三个节点时,该值可在2-4之间
#discovery.zen.minimum_master_nodes: # 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ping其他节点时的超时时间,网络比较慢时可将该值设大
#discovery.zen.ping.timeout: 3s # For more information, see
# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/modules-discovery-zen.html> # 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.
#
# . Disable multicast discovery (enabled by default):
# 禁止当前节点发现多个集群节点,
# 默认启用发现节点机制,设为false的话表示禁用自动发现机制
#discovery.zen.ping.multicast.enabled: false
#
# . Configure an initial list of master nodes in the cluster
# to perform discovery when new nodes (master or data) are started:
#设置新节点被启动时能够发现的主节点列表
#discovery.zen.ping.unicast.hosts: ["host1", "host2:port"] # EC2 discovery allows to use AWS EC2 API in order to perform discovery.
#
# You have to install the cloud-aws plugin for enabling the EC2 discovery.
#
# For more information, see
# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/modules-discovery-ec2.html>
#
# See <http://elasticsearch.org/tutorials/elasticsearch-on-ec2/>
# for a step-by-step tutorial. # GCE discovery allows to use Google Compute Engine API in order to perform discovery.
#
# You have to install the cloud-gce plugin for enabling the GCE discovery.
#
# For more information, see <https://github.com/elasticsearch/elasticsearch-cloud-gce>. # Azure discovery allows to use Azure API in order to perform discovery.
#
# You have to install the cloud-azure plugin for enabling the Azure discovery.
#
# For more information, see <https://github.com/elasticsearch/elasticsearch-cloud-azure>. ################################## Slow Log ################################## # Shard level query and fetch threshold logging. #index.search.slowlog.threshold.query.warn: 10s
#index.search.slowlog.threshold.query.info: 5s
#index.search.slowlog.threshold.query.debug: 2s
#index.search.slowlog.threshold.query.trace: 500ms #index.search.slowlog.threshold.fetch.warn: 1s
#index.search.slowlog.threshold.fetch.info: 800ms
#index.search.slowlog.threshold.fetch.debug: 500ms
#index.search.slowlog.threshold.fetch.trace: 200ms #index.indexing.slowlog.threshold.index.warn: 10s
#index.indexing.slowlog.threshold.index.info: 5s
#index.indexing.slowlog.threshold.index.debug: 2s
#index.indexing.slowlog.threshold.index.trace: 500ms ################################## GC Logging ################################ #monitor.jvm.gc.young.warn: 1000ms
#monitor.jvm.gc.young.info: 700ms
#monitor.jvm.gc.young.debug: 400ms #monitor.jvm.gc.old.warn: 10s
#monitor.jvm.gc.old.info: 5s
#monitor.jvm.gc.old.debug: 2s ################################## Security ################################ # Uncomment if you want to enable JSONP as a valid return transport on the
# http server. With this enabled, it may pose a security risk, so disabling
# it unless you need it is recommended (it is disabled by default).
#如果你想要启用JSONP作为HTTP服务器的有效传输的话取消注释。
#启用此功能,它可能会带来风险。因此,禁用它,除非你必须需要它(默认禁用)
#http.jsonp.enable: true

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