Elasticsearch 시리즈 - 설치 배포

준비

설치

오류

준비

1. 서버에서 es 사용자 만들기

useradd es
passwd es

2.elasticsearch 배포 환경 JDK
3. 패키지를 설치하면 엘라스틱 홈페이지에 가서 해당 버전 파일을 다운로드할 수 있다.제가 여기에 설치한 버전은 7.12.0입니다.Linux 버전:

//centos curl 
yum install curl
// es 
curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.12.0-linux-x86_64.tar.gz

설치

다운로드한 압축 파일 압축 해제

tar -xzvf elasticsearch-7.12.0-linux-x86_64.tar.gz 

elasticsearch 시작

cd elasticsearch-7.12.0/bin/
./elasticsearch &

elasticsearch 방문

curl http://127.0.0.1:9200

// 
{
     
  "name" : "izwz9ja3exxb7by25st5gbz",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "hD8cxBoIRvW6tZUEIFMTUQ",
  "version" : {
     
    "number" : "7.12.0",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "78722783c38caa25a70982b5b042074cde5d3b3a",
    "build_date" : "2021-03-18T06:17:15.410153305Z",
    "build_snapshot" : false,
    "lucene_version" : "8.8.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

클러스터 시작: 구성 파일 수정

vim elasticsearch.yml

// 
cluster.name: elasticsearch
// 
node.name: node-1
// 
path.data: /path/to/data
// 
path.logs: /path/to/logs
//     0.0.0.0 
network.host: 0.0.0.0
// 
http.port: 9200
// 
discovery.seed_hosts: ["172.18.88.96", "127.0.0.1"]
// 
cluster.initial_master_nodes: ["node-1", "node-2"]

클러스터 노드 시작

./elasticsearch -Epath.data=data1 -Epath.logs=log1 -Enode.name=node-1 -d
./elasticsearch -Epath.data=data2 -Epath.logs=log2 -Enode.name=node-2 -d
./elasticsearch -Epath.data=data3 -Epath.logs=log3 -Enode.name=node-3 -d

그룹 건강 정보 보기:curlhttp://localhost:9200/_cluster/health curl http://localhost:9200/_cat/health?v=true노드 목록 보기curlhttp://localhost:9200/_cat/nodes노드 정보 보기curlhttp://localhost:9200/_nodes/transport?pretty

잘못

오류 보고 시작 오류 ='Cannot allocate memory'

warning: usage of JAVA_HOME is deprecated, use ES_JAVA_HOME
warning: ignoring JAVA_OPTS= -Djava.security.egd=file:/dev/./urandom; pass JVM parameters via ES_JAVA_OPTS
Future versions of Elasticsearch will require Java 11; your Java version from [/usr/local/java/jdk1.8.0_171/jre] does not meet this requirement. Consider switching to a distribution of Elasticsearch with a bundled JDK. If you are already using a distribution with a bundled JDK, ensure the JAVA_HOME environment variable is not set.
warning: usage of JAVA_HOME is deprecated, use ES_JAVA_HOME
warning: ignoring JAVA_OPTS= -Djava.security.egd=file:/dev/./urandom; pass JVM parameters via ES_JAVA_OPTS
Future versions of Elasticsearch will require Java 11; your Java version from [/usr/local/java/jdk1.8.0_171/jre] does not meet this requirement. Consider switching to a distribution of Elasticsearch with a bundled JDK. If you are already using a distribution with a bundled JDK, ensure the JAVA_HOME environment variable is not set.
Exception in thread "main" java.lang.RuntimeException: starting java failed with [1]
output:
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 986513408 bytes for committing reserved memory.
# An error report file with more information is saved as:
# logs/hs_err_pid27324.log
error:
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c5330000, 986513408, 0) failed; error='Cannot allocate memory' (errno=12)
        at org.elasticsearch.tools.launchers.JvmOption.flagsFinal(JvmOption.java:119)
        at org.elasticsearch.tools.launchers.JvmOption.findFinalOptions(JvmOption.java:81)
        at org.elasticsearch.tools.launchers.JvmErgonomics.choose(JvmErgonomics.java:38)
        at org.elasticsearch.tools.launchers.JvmOptionsParser.jvmOptions(JvmOptionsParser.java:135)
        at org.elasticsearch.tools.launchers.JvmOptionsParser.main(JvmOptionsParser.java:86)

해결 방법:config 디렉터리의 프로필 jvm를 수정합니다.options

################################################################
## IMPORTANT: JVM heap size
################################################################
##
## The heap size is automatically configured by Elasticsearch
## based on the available memory in your system and the roles
## each node is configured to fulfill. If specifying heap is
## required, it should be done through a file in jvm.options.d,
## and the min and max should be set to the same value. For
## example, to set the heap to 4 GB, create a new file in the
## jvm.options.d directory containing these lines:
##
## -Xms4g
## -Xmx4g
##
## See https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html
## for more information
##
################################################################
#  
-Xms128m
-Xmx128m

시작 오류: can not run elasticsearch as root

[2021-04-09T10:26:01,627][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [izwz9ja3exxb7by25st5gbz] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:75) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:116) ~[elasticsearch-cli-7.12.0.jar:7.12.0]
        at org.elasticsearch.cli.Command.main(Command.java:79) ~[elasticsearch-cli-7.12.0.jar:7.12.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:81) ~[elasticsearch-7.12.0.jar:7.12.0]
Caused by: java.lang.RuntimeException: can not run elasticsearch as root
        at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:101) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:168) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:397) ~[elasticsearch-7.12.0.jar:7.12.0]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-7.12.0.jar:7.12.0]
        ... 6 more
uncaught exception in thread [main]
java.lang.RuntimeException: can not run elasticsearch as root
        at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:101)
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:168)
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:397)
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159)
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150)
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:75)
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:116)
        at org.elasticsearch.cli.Command.main(Command.java:79)
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115)
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:81)
For complete error details, refer to the log at /root/elasticsearch-7.12.0/logs/elasticsearch.log

해결 방법:es 사용자 만들기

 es  
useradd es
 es   changeme
passwd es
 es   
chown -R es elasticsearch-7.12.0
 es  
su es

."Error: Could not find or load main class org.elasticsearch.tools.java_version_checker.JavaVersionChecker"해결 방법:elasticsearch 디렉터리가 루트 아래에 있기 때문에elasticsearch 설치 파일을 es 사용자 디렉터리로 복사합니다
."AccessDeniedException[/home/es/elasticsearch-7.12.0/config/elasticsearch.yml]"해결 방법을 시작합니다. elasticsearch 디렉터리에 권한이 없어서 프로필을 읽을 수 없습니다. 권한을 부여받아 조작하십시오

chown -R es elasticsearch-7.12.0

."ERROR:[2]bootstrap checks failed"[1]: max file descriptors[4096] for elasticsearch process is too low, increase to atleast[65535]:max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
해결 방법:

 
vim /etc/sysctl.conf
 
vm.max_map_count=262144
   
sysctl -p