elasticsearch 启动时需要jdk1.8版本,指定jdk的版本
linux-dash
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因为自己虚拟机上的jdk是1.7,而需要的版本为1.8
首先需要先去下载一个1.8的jdk,放在linux目录下,此处不再多言。(不需要将jdk1.8配置到环境变量)
修改启动脚本
这种情况下,我们就需要在启动elasticsearch
时,就需要指定jdk
版本。
即修改elasticsearch
的启动脚本(elasticsearch_HOME/bin/elasticsearch
)
[root@master01 elasticsearch-6.0.0]# vim bin/elasticsearch
# 添加以下代码
export JAVA_HOME=/home/yutao/jdk1.8.0_121/ (此处配置的为刚下的1.8的配置目录)
export PATH=$JAVA_HOME/bin:$PATH
if [ -x "$JAVA_HOME/bin/java" ]; then
JAVA="/home/yutao/jdk1.8.0_121/bin/java"
else
JAVA=`which java`
fi
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这里我也给我完整的文件:
#!/bin/bash
# CONTROLLING STARTUP:
#
# This script relies on a few environment variables to determine startup
# behavior, those variables are:
#
# ES_PATH_CONF -- Path to config directory
# ES_JAVA_OPTS -- External Java Opts on top of the defaults set
#
# Optionally, exact memory values can be set using the `ES_JAVA_OPTS`. Note that
# the Xms and Xmx lines in the JVM options file must be commented out. Example
# values are "512m", and "10g".
#
# ES_JAVA_OPTS="-Xms8g -Xmx8g" ./bin/elasticsearch
# 我添加的 start
export JAVA_HOME=/home/yutao/jdk1.8.0_121/
export PATH=$JAVA_HOME/bin:$PATH
# 我添加的 end
source "`dirname "$0"`"/elasticsearch-env
parse_jvm_options() {
if [ -f "$1" ]; then
echo "`grep "^-" "$1" | tr '\n' ' '`"
fi
}
ES_JVM_OPTIONS="$ES_PATH_CONF"/jvm.options
ES_JAVA_OPTS="`parse_jvm_options "$ES_JVM_OPTIONS"` $ES_JAVA_OPTS"
# 我添加的 start
if [ -x "$JAVA_HOME/bin/java" ]; then
JAVA="/home/yutao/jdk1.8.0_121/bin/java"
else
JAVA=`which java`
fi
# 我添加的 end
# manual parsing to find out, if process should be detached
if ! echo $* | grep -E '(^-d |-d$| -d |--daemonize$|--daemonize )' > /dev/null; then
exec \
"$JAVA" \
$ES_JAVA_OPTS \
-Des.path.home="$ES_HOME" \
-Des.path.conf="$ES_PATH_CONF" \
-cp "$ES_CLASSPATH" \
org.elasticsearch.bootstrap.Elasticsearch \
"$@"
else
exec \
"$JAVA" \
$ES_JAVA_OPTS \
-Des.path.home="$ES_HOME" \
-Des.path.conf="$ES_PATH_CONF" \
-cp "$ES_CLASSPATH" \
org.elasticsearch.bootstrap.Elasticsearch \
"$@" \
<&- &
retval=$?
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 $?
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这样就修改完毕;
参考地址:https://blog.csdn.net/liubenlong007/article/details/54708107
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