elasticsearch指定jdk

电玩女神 2023-09-27 05:28 37阅读 0赞

### elasticsearch指定jdk ###

#### 1.修改/elasticsearch-7.8.0/bin目录下elasticsearch配置文件，添加如下配置 ####

#配置自己的jdk11
    export JAVA_HOME=/opt/elasticsearch-7.8.0/jdk
    export PATH=$JAVA_HOME/bin:$PATH
    
    #添加jdk判断
    if [ -x "$JAVA_HOME/bin/java" ]; then
    	        JAVA="/opt/elasticsearch-7.8.0/jdk/bin/java"
    else
    		        JAVA=`which java`
    fi

#### 2.完整elasticsearch配置文件 ####

#!/bin/bash
    
    # CONTROLLING STARTUP:
    #
    # This script relies on a few environment variables to determine startup
    # behavior, those variables are:
    #
    #   ES_PATH_CONF -- Path to config directory
    #   ES_JAVA_OPTS -- External Java Opts on top of the defaults set
    #
    # Optionally, exact memory values can be set using the `ES_JAVA_OPTS`. Example
    # values are "512m", and "10g".
    #
    #   ES_JAVA_OPTS="-Xms8g -Xmx8g" ./bin/elasticsearch
    
    #配置自己的jdk11
    export JAVA_HOME=/opt/elasticsearch-7.8.0/jdk
    export PATH=$JAVA_HOME/bin:$PATH
    
    #添加jdk判断
    if [ -x "$JAVA_HOME/bin/java" ]; then
    	        JAVA="/opt/elasticsearch-7.8.0/jdk/bin/java"
    else
    		        JAVA=`which java`
    fi
    
    source "`dirname "$0"`"/elasticsearch-env
    
    CHECK_KEYSTORE=true
    DAEMONIZE=false
    for option in "$@"; do
      case "$option" in
        -h|--help|-V|--version)
          CHECK_KEYSTORE=false
          ;;
        -d|--daemonize)
          DAEMONIZE=true
          ;;
      esac
    done
    
    if [ -z "$ES_TMPDIR" ]; then
      ES_TMPDIR=`"$JAVA" "$XSHARE" -cp "$ES_CLASSPATH" org.elasticsearch.tools.launchers.TempDirectory`
    fi
    
    # get keystore password before setting java options to avoid
    # conflicting GC configurations for the keystore tools
    unset KEYSTORE_PASSWORD
    KEYSTORE_PASSWORD=
    if [[ $CHECK_KEYSTORE = true ]] 
    && bin/elasticsearch-keystore has-passwd --silent
    then
      if ! read -s -r -p "Elasticsearch keystore password: " KEYSTORE_PASSWORD ; then
        echo "Failed to read keystore password on console" 1>&2
        exit 1
      fi
    fi
    
    # The JVM options parser produces the final JVM options to start Elasticsearch.
    # It does this by incorporating JVM options in the following way:
    #   - first, system JVM options are applied (these are hardcoded options in the
    #     parser)
    #   - second, JVM options are read from jvm.options and jvm.options.d/*.options
    #   - third, JVM options from ES_JAVA_OPTS are applied
    #   - fourth, ergonomic JVM options are applied
    ES_JAVA_OPTS=`export ES_TMPDIR; "$JAVA" "$XSHARE" -cp "$ES_CLASSPATH" org.elasticsearch.tools.launchers.JvmOptionsParser "$ES_PATH_CONF"`
    # manual parsing to find out, if process should be detached
    if [[ $DAEMONIZE = false ]]; then
      exec 
    "$JAVA" 
    "$XSHARE" 
    $ES_JAVA_OPTS 
    -Des.path.home="$ES_HOME" 
    -Des.path.conf="$ES_PATH_CONF" 
    -Des.distribution.flavor="$ES_DISTRIBUTION_FLAVOR" 
    -Des.distribution.type="$ES_DISTRIBUTION_TYPE" 
    -Des.bundled_jdk="$ES_BUNDLED_JDK" 
    -cp "$ES_CLASSPATH" 
    org.elasticsearch.bootstrap.Elasticsearch 
    "$@" <<<"$KEYSTORE_PASSWORD"
    else
      exec 
    "$JAVA" 
    "$XSHARE" 
    $ES_JAVA_OPTS 
    -Des.path.home="$ES_HOME" 
    -Des.path.conf="$ES_PATH_CONF" 
    -Des.distribution.flavor="$ES_DISTRIBUTION_FLAVOR" 
    -Des.distribution.type="$ES_DISTRIBUTION_TYPE" 
    -Des.bundled_jdk="$ES_BUNDLED_JDK" 
    -cp "$ES_CLASSPATH" 
    org.elasticsearch.bootstrap.Elasticsearch 
    "$@" 
    <<<"$KEYSTORE_PASSWORD" &
      retval=$?
      pid=$!
      [ $retval -eq 0 ] || exit $retval
      if [ ! -z "$ES_STARTUP_SLEEP_TIME" ]; then
        sleep $ES_STARTUP_SLEEP_TIME
      fi
      if ! ps -p $pid > /dev/null ; then
        exit 1
      fi
      exit 0
    fi
    
    exit $?

#### 3.创建es账号并赋权 ####

由于es新版本不允许使用root启动，需要重新创建账号。

useradd es  #创建用户es
    passwd es   #给已创建的用户es设置密码
    chown -R es elasticsearch-7.8.0/ #文件赋权

#### 4.切换账户并启动elasticsearch。 ####

su es  #切换到es
    cd elasticsearch-7.8.0/bin #进去es的bin目录下
    ./elasticsearch -d   #后台启动

如果启动出现elasticsearch-env << 符号异常，修改elasticsearch-env文件，第112行：

done < < <(env)  修改为   done <<<'env'