elk7.5.0 之 elasticsearch7.5.0 集群部署

搭建最新版本的elasticsearch7.5 集群

环境

服务器	配置	服务	系统	es版本
10.100.12.144	16G 8core 500G磁盘	node.master/node.data	CentOS 7.4	es7.5
10.100.12.145	16G 8core 500G磁盘	node.master/node.data	CentOS 7.4	es7.5
10.100.12.146	16G 8core 500G磁盘	node.master/node.data	CentOS 7.4	es7.5
10.100.12.147	16G 8core 500G磁盘	node.data	CentOS 7.4	es7.5
10.100.12.148	16G 8core 500G磁盘	node.data	CentOS 7.4	es7.5

服务器基础优化

文件句柄

Linux中，每个进程默认打开的最大文件句柄数是1000,对于服务器进程来说，显然太小，通过修改/etc/security/limits.conf来增大打开最大句柄数和/etc/security/limits.d/20-nproc.conf 配置

$ vi /etc/security/limits.conf
	* soft nproc 1024000
	* hard nproc 1024000
$ vi /etc/security/limits.d/20-nproc.conf
	*      soft    nproc    65535

内核优化

$ cat  /etc/sysctl.conf 
#CTCDN系统优化参数
 #关闭ipv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
#决定检查过期多久邻居条目
net.ipv4.neigh.default.gc_stale_time=120
#使用arp_announce / arp_ignore解决ARP映射问题
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.all.arp_announce=2
net.ipv4.conf.lo.arp_announce=2
# 避免放大攻击
net.ipv4.icmp_echo_ignore_broadcasts = 1
# 开启恶意icmp错误消息保护
net.ipv4.icmp_ignore_bogus_error_responses = 1
#关闭路由转发
net.ipv4.ip_forward = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
#开启反向路径过滤
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
#处理无源路由的包
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.default.accept_source_route = 0
#关闭sysrq功能
kernel.sysrq = 0
#core文件名中添加pid作为扩展名
kernel.core_uses_pid = 1
# 开启SYN洪水攻击保护
net.ipv4.tcp_syncookies = 1
#修改消息队列长度
kernel.msgmnb = 65536
kernel.msgmax = 65536
#设置最大内存共享段大小bytes
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
#timewait的数量，默认180000
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_rmem = 4096        87380   4194304
net.ipv4.tcp_wmem = 4096        16384   4194304
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
#每个网络接口接收数据包的速率比内核处理这些包的速率快时，允许送到队列的数据包的最大数目
net.core.netdev_max_backlog = 262144
#限制仅仅是为了防止简单的DoS 攻击
net.ipv4.tcp_max_orphans = 3276800
#未收到客户端确认信息的连接请求的最大值
net.ipv4.tcp_max_syn_backlog = 262144
net.ipv4.tcp_timestamps = 0
#内核放弃建立连接之前发送SYNACK 包的数量
net.ipv4.tcp_synack_retries = 1
#内核放弃建立连接之前发送SYN 包的数量
net.ipv4.tcp_syn_retries = 1
#启用timewait 快速回收
net.ipv4.tcp_tw_recycle = 1
#开启重用。允许将TIME-WAIT sockets 重新用于新的TCP 连接
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_fin_timeout = 1
#当keepalive 起用的时候，TCP 发送keepalive 消息的频度。缺省是2 小时
net.ipv4.tcp_keepalive_time = 1800
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl = 15
#允许系统打开的端口范围
net.ipv4.ip_local_port_range = 1024    65000
#修改防火墙表大小，默认65536
net.netfilter.nf_conntrack_max=655350
net.netfilter.nf_conntrack_tcp_timeout_established=1200
# 确保无人能修改路由表
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
vm.max_map_count = 1000000
fs.nr_open = 10000000
fs.file-max = 11000000

安装es

下载软件

$ cd /usr/local/src
$ wget  https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.5.0-x86_64.rpm
$ wget  https://artifacts.elastic.co/downloads/kibana/kibana-7.5.0-x86_64.rpm
## JDK建议13版本
$ https://www.oracle.com/technetwork/java/javase/downloads/jdk13-downloads-5672538.html

分发软件到其他机器

$ for i in 10.100.12.145 10.100.12.146 10.100.12.147 10.100.12.148 ;do scp /usr/local/src/jdk-13.0.1_linux-x64_bin.rpm $i:/usr/local/src/ ;done
$ for i in 10.100.12.145 10.100.12.146 10.100.12.147 10.100.12.148 ;do scp /usr/local/src/elasticsearch-7.5.0-x86_64.rpm  $i:/usr/local/src/ ;done

安装jdk和es

各个节点安装

$ yum localinstall -y /usr/local/src/jdk-13.0.1_linux-x64_bin.rpm
$ yum localinstall -y /usr/local/src/elasticsearch-7.5.0-x86_64.rpm

验证jdk

$ java -version
java version "13.0.1" 2019-10-15
Java(TM) SE Runtime Environment (build 13.0.1+9)
Java HotSpot(TM) 64-Bit Server VM (build 13.0.1+9, mixed mode, sharing)

配置es (使用SSL)

## master节点生成证书
$ cd /usr/share/elasticsearch/
$ ../bin/elasticsearch-certutil ca  ##生成ca证书 保存elastic-stack-ca.p12路径并输入密码（123qwe123）
$../bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12 ##生成客户端证书

保存elastic-certificates.p12路径并输入密码（123qwe123）
将elastic-stack-ca.p12 拷贝到各个节点的/etc/elasticsearch/下(必须在此目录下的任意一层目录)

$ for i in 10.100.12.144 10.100.12.145 10.100.12.146 10.100.12.147 10.100.12.148 ;do scp /usr/share/elasticsearch/elastic-*  $i:/etc/elasticsearch/;done

elasticsearch.yml中增加配置

$ egrep -v '^#' /etc/elasticsearch/elasticsearch.yml 
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: /etc/elasticsearch/elastic-certificates.p12  
xpack.security.transport.ssl.truststore.path: /etc/elasticsearch/elastic-certificates.p12

所有elasticsearch节点将密码添加至elasticsearch-keystore(密码123qwe123)

$ bin/elasticsearch-keystore add xpack.security.transport.ssl.keystore.secure_password
$ bin/elasticsearch-keystore add xpack.security.transport.ssl.truststore.secure_password

最终3个master节点配置如下（3个节点不同在于node.name）

cluster.name: cluster-7.5.0
node.name: node-1
node.master: true
node.data: true
path.data: /home/work/elasticsearch/data
path.logs: /home/work/elasticsearch/logs
http.port: 9200
network.host: 0.0.0.0
network.publish_host: 10.100.12.144
discovery.seed_hosts: ["10.100.12.144:9300", "10.100.12.145:9300", "10.100.12.146:9300"]
cluster.initial_master_nodes: ["10.100.12.144","10.100.12.145","10.100.12.146"]
discovery.zen.minimum_master_nodes: 2
discovery.zen.ping_timeout: 60s # 心跳超时时间 
discovery.zen.fd.ping_interval: 120s     # 节点检测时间 
discovery.zen.fd.ping_timeout: 120s     #ping 超时时间 
discovery.zen.fd.ping_retries: 3     # 心跳重试次数

gateway.recover_after_nodes: 4
gateway.recover_after_time: 10m
gateway.expected_nodes: 5
bootstrap.system_call_filter: false
http.cors.enabled: true
http.cors.allow-origin: "*"

xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: /etc/elasticsearch/elastic-certificates.p12  
xpack.security.transport.ssl.truststore.path: /etc/elasticsearch/elastic-certificates.p12

2个数据节点(因为是数据节点不参与选举master，去掉node.master: true配置项，注意更改node.name)

$ egrep -v '^#' /etc/elasticsearch/elasticsearch.yml   
cluster.name: cluster-7.5.0
node.name: node-4 ##注意更改
node.master: false
node.data: true
path.data: /home/work/elasticsearch/data
path.logs: /home/work/elasticsearch/logs
http.port: 9200
network.host: 0.0.0.0
network.publish_host: 10.100.12.147
discovery.seed_hosts: ["10.100.12.144:9300", "10.100.12.145:9300", "10.100.12.146:9300"]
cluster.initial_master_nodes: ["10.100.12.144","10.100.12.145","10.100.12.146"]
discovery.zen.minimum_master_nodes: 2
discovery.zen.ping_timeout: 60s # 心跳超时时间 
discovery.zen.fd.ping_interval: 120s     # 节点检测时间 
discovery.zen.fd.ping_timeout: 120s     #ping 超时时间 
discovery.zen.fd.ping_retries: 3     # 心跳重试次数
gateway.recover_after_nodes: 4
gateway.recover_after_time: 10m
gateway.expected_nodes: 5
bootstrap.system_call_filter: false
http.cors.enabled: true
http.cors.allow-origin: "*"

xpack.security.enabled: true ## 开启x-pack
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: /etc/elasticsearch/elastic-certificates.p12  
xpack.security.transport.ssl.truststore.path: /etc/elasticsearch/elastic-certificates.p12

启动es不可使用root权限，需创建普通用户，安装es时候系统已经默认新增了elasticsearch组和用户，但是 是nologin的，还需要手动创建普通用户。

##创建数据目录
# mkdir  /home/work/elasticsearch/{data,logs} -p
## 创建普通账户
# useradd elastic -G elasticsearch
# echo elastic |passwd elastic --stdin 
## 授权
# chown -R elastic:elasticsearch /usr/share/elasticsearch/
# chown -R elastic:elasticsearch /etc/elasticsearch/
# chown -R elastic:elasticsearch /home/work/elasticsearch/

所有节点启动es

$ systemctl enable elasticsearch.service 
$ systemctl start elasticsearch.service 

稍等一会 选举出master
配置用户密码

[elastic@khbq-es01 elasticsearch-7.6.2_master]$ ./bin/elasticsearch-setup-passwords interactive
Initiating the setup of passwords for reserved users elastic,apm_system,kibana,logstash_system,beats_system,remote_monitoring_user.
You will be prompted to enter passwords as the process progresses.
Please confirm that you would like to continue [y/N]y
Enter password for [elastic]: 
Reenter password for [elastic]: 
Enter password for [apm_system]: 
Reenter password for [apm_system]: 
Enter password for [kibana]: 
Reenter password for [kibana]: 
Enter password for [logstash_system]: 
Reenter password for [logstash_system]: 
Enter password for [beats_system]: 
Reenter password for [beats_system]: 
Enter password for [remote_monitoring_user]: 
Reenter password for [remote_monitoring_user]: 
Changed password for user [apm_system]
Changed password for user [kibana]
Changed password for user [logstash_system]
Changed password for user [beats_system]
Changed password for user [remote_monitoring_user]
Changed password for user [elastic]

$ curl  --user elastic:xx 'localhost:9200/_cat/master?v'
id                     host          ip            node
pMpl1On4TAmRlxUjm6IKcA 10.100.12.145 10.100.12.145 node-2
$ curl --user elastic:xx 'localhost:9200/_cat/nodes?v' 
ip            heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
10.100.12.147           49          98  14    1.39    1.53     1.31 dilm      -      node-4
10.100.12.144           66          98  20    3.26    2.19     1.69 dilm      -      node-1
10.100.12.146           38          98  11    2.83    2.06     1.71 dilm      -      node-3
10.100.12.148           29          98  18    1.27    1.23     1.23 dilm      -      node-5
10.100.12.145           68          98  23    2.11    2.22     2.06 dilm      *      node-2

通过以上步骤es集群安装完成。
es7版本已经自带x-pack，无需自行安装，通过配置xpack.security.enabled: true 来开启x-pack ，kibana来展示x-pack安全组件，下一章节安装kibana。

集群挂掉后会找不到master节点，更新es配置如下(去掉了证书配置)：

cluster.name: cluster-7.5.0
node.name: node-1
node.master: true
node.data: true
path.data: /home/work/elasticsearch/data_2020021113
path.logs: /home/work/elasticsearch/logs_20200213
http.port: 9200
network.host: 0.0.0.0
discovery.zen.ping.unicast.hosts: ["10.100.12.144", "10.100.12.145", "10.100.12.146"]
discovery.zen.minimum_master_nodes: 2
http.cors.enabled: true
http.cors.allow-origin: "*"

模版

PUT _template/logstash-kafka
{
    "order" : 6,
    "version" : 60001,
    "index_patterns" : [
      "logstash-kafka*"
    ],
    "settings" : {
      "index" : {
        "refresh_interval" : "60s",
        "number_of_shards" : "5",
        "analysis.analyzer.default.type": "ik_max_word",
        "translog" : {
          "sync_interval" : "60s",
          "durability" : "async"
        },
        "number_of_replicas" : "1"
      }
    },
    "mappings" : {
      "dynamic_templates" : [
        {
          "message_field" : {
            "path_match" : "message",
            "mapping" : {
              "norms" : false,
              "type" : "text"
            },
            "match_mapping_type" : "string"
          }
        },
        {
          "string_fields" : {
            "mapping" : {
              "norms" : false,
              "type" : "text",
              "fields" : {
                "keyword" : {
                  "ignore_above" : 256,
                  "type" : "keyword"
                }
              }
            },
            "match_mapping_type" : "string",
            "match" : "*"
          }
        }
      ],
      "properties" : {
        "@timestamp" : {
          "type" : "date"
        },
        "geoip" : {
          "dynamic" : true,
          "properties" : {
            "ip" : {
              "type" : "ip"
            },
            "latitude" : {
              "type" : "half_float"
            },
            "location" : {
              "type" : "geo_point"
            },
            "longitude" : {
              "type" : "half_float"
            }
          }
        },
        "@version" : {
          "type" : "keyword"
        }
      }
    },
    "aliases" : { }
}

其他操作

PUT _all/_settings
{
  "index":{
    "max_result_window":10000000
  }
}

PUT _cluster/settings
{
  "persistent": {
    "search.max_buckets": 10000000
  }
}

PUT _snapshot/snapshotPro 
{
    "type": "fs", 
    "settings": {
        "location": "/home/work/snapshot",
        "compress": true
    }
}
GET _snapshot
GET _all/_settings
GET /_snapshot
GET /_snapshot/
GET _cluster/settings
GET _template/lgb

GET /_cluster/settings

GET /_cat/aliases

GET _template/logstash-log4j

GET _template/logstash

GET _nodes/10.100.12.144/hot_threads

GET _template/logstash-kafka





GET /_cluster/settings
GET _template/logstash-kafka
PUT _cluster/settings?pretty


PUT _cluster/settings?pretty
{
  "persistent": {
    "cluster": {
      "routing": {
        "allocation": {
          "allow_rebalance": "indices_primaries_active",
          "cluster_concurrent_rebalance": "8",
          "node_concurrent_recoveries": "8",
          "enable": "all"
        }
      }
    },
    "indices": {
      "store": {
        "throttle": {
          "max_bytes_per_sec": "50mb"
        }
      }
    }
  },
  "transient": {}
}

GET /_cat/templates
GET /_cat/thread_pool?v
GET /_cat/nodes?v
GET /_cat/allocation?v
GET /_cat/
GET /_cat/master?v
GET /_stats/fielddata?fields=*
GET /_nodes/stats/indices/fielddata?fields=*
GET /_nodes/stats/indices/fielddata?level=indices&fields=* 
GET /_cluster/health?pretty=true
GET _template/tykh
GET /_cluster/state
GET /_cluster/settings
GET /_nodes/10.100.20.111
GET /_all/_settings
GET _cat/health?v
PUT _cluster/settings
{
  "persistent":{
    "search.max_buckets": 100000
    }
  }
  
POST /_analyze
{
  "text": "我爱北京天安门",
  "analyzer": "ik_max_word"
  
}


GET _template/template_default
GET _cluster/settings
PUT _cluster/settings
{
"transient" : {
"cluster.routing.allocation.enable" : "all"
}
}

GET _analyze?pretty
{
        "analyzer":"ik_smart",
        "text":"中国人民警察的服务宗旨"
}



GET logstash-kafka-htjf-filebeat-htjf-econtract-jf-2019-12/_analyze
{
 
  "field": "text",
  "text": "中国人民警察的服务宗旨" 
}
GET blog
PUT blog/article/
{
  "title": "中国人民警察的服务宗旨",
  "content": "Version 1.0 released today!",
  "priority": 10,
  "tags": ["announce", "elasticsearch", "release"]
  
}
POST _setting/cluster
{
  
  "search.max_buckets": "100000"
}

POST _analyze
{
  "analyzer": "ik_smart",
  "text": "5号电池"
  
}
POST _analyze
{
  "analyzer": "ik_max_word",
  "text": "5号电池"
  
}