could not find java in ES_JAVA_HOME at rootoptelasticelasticsearch-8.1.2jdkbinjava

短命女 2024-04-07 11:59 19阅读 0赞

### 报错信息 ###

es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2> java -version
    java version "1.8.0_221"
    Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
    Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)
    es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2> sh start.sh 
    could not find java in ES_JAVA_HOME at /root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java
    es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2>

从上文中可以看到，全局的java是存在且版本号大于1.8的，并且当前用户非root用户  
查看报错的原因：打开elasticsearch elasticsearch-env查看错误原因  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5LqR5rW35qKm5bCY_size_20_color_FFFFFF_t_70_g_se_x_16]  
可以看到该错误是文件不可执行时才报错，那么我们看下他是调用了ES\_HOME的jdk，看下该目录下文件是否可执行

### 查看ES目录下的jdk是否可执行 ###

es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2> sh start.sh 
    could not find java in bundled JDK at /root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java
    es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2> .//root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java -version
    bash: .//root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java: 没有那个文件或目录
    es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2> ./root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java -version
    bash: ./root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java: 没有那个文件或目录
    es@MEPRDAPP01:/root/opt/elastic/elasticsearch-8.1.2> cd /root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java
    bash: cd: /root/opt/elastic/elasticsearch-8.1.2/jdk/bin/java: 权限不够

由于root目录是root用户的，不能将root目录的用户和用户组设置为es，因此我们在根目录从新新建一个目录/es，将文件全部移动到/es下

MEPRDAPP01:~/opt # cd  /
    MEPRDAPP01:/ # mkdir es
    MEPRDAPP01:/ # mv /root/opt/ /es
    MEPRDAPP01:/ # chown -R es:es /es
    MEPRDAPP01:/ # ll
    总用量 80
    drwxr-xr-x   2 root root  4096 9月  26 2019 bin
    drwxr-xr-x   3 root root  4096 9月  26 2019 boot
    drwx------   2 root root   151 9月  26 2019 Desktop
    drwxr-xr-x  21 root root  3980 4月   7 22:22 dev
    drwxr-xr-x   3 es   es      17 4月  14 13:42 es
    drwxr-xr-x 127 root root 12288 4月  14 12:22 etc
    drwxr-xr-x   5 root root    49 4月  14 10:40 home

### 再次执行 ###

es@MEPRDAPP01:/es/opt/elastic/elasticsearch-8.1.2> sh start.sh

#### 查看报文还有报错 错误1 ####

ERROR: [1] bootstrap checks failed. You must address the points described in the following [1] lines before starting Elasticsearch.
    bootstrap check failure [1] of [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
    ERROR: Elasticsearch did not exit normally - check the logs at /es/opt/elastic/logs/elasticsearch.log

修改Elastic的配置文件elasticsearch.yml文件

vim /es/opt/elastic/elasticsearch-8.1.2/config/elasticsearch.yml

添加该配置

node.name: node-1

#### 错误2 ####

*  编辑配置文件\_limits.conf\_
    
    MEPRDAPP01:~ \# vim /etc/security/limits.conf

添加如下配置

es hard nofile 65536
    es soft nofile 65536

*  编辑配置文件 *sysctl.conf*
    
    MEPRDAPP01:~ \# vim /etc/sysctl.conf

添加如下配置

vm.max_map_count=655360

查看是否更改

sysctl -p

#### 再次启动 ####

注销调用户es重新登录，再次启动es

MEPRDAPP01:/es/opt/elastic/elasticsearch-8.1.2 # su es
    es@MEPRDAPP01:/es/opt/elastic/elasticsearch-8.1.2> sh start.sh 
    warning: ignoring JAVA_HOME=/usr/local/java; using bundled JDK
    warning: ignoring JAVA_HOME=/usr/local/java; using bundled JDK
    warning: ignoring JAVA_HOME=/usr/local/java; using bundled JDK
    [2022-04-14T14:23:36,960][INFO ][o.e.n.Node               ] [node-1] version[8.1.2], pid[169299], build[default/tar/31df9689e80bad366ac20176aa7f2371ea5eb4c1/2022-03-29T21:18:59.991429448Z], OS[Linux/4.12.14-94.41-default/amd64], JVM[Eclipse Adoptium/OpenJDK 64-Bit Server VM/17.0.2/17.0.2+8]
    [2022-04-14T14:23:36,967][INFO ][o.e.n.Node               ] [node-1] JVM home [/es/opt/elastic/elasticsearch-8.1.2/jdk], using bundled JDK [true]
    [2022-04-14T14:23:36,967][INFO ][o.e.n.Node               ] [node-1] JVM arguments [-Xshare:auto, -Des.networkaddress.cache.ttl=60, -Des.networkaddress.cache.negative.ttl=10, -Djava.security.manager=allow, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -XX:+ShowCodeDetailsInExceptionMessages, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dio.netty.allocator.numDirectArenas=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j2.formatMsgNoLookups=true, -Djava.locale.providers=SPI,COMPAT, --add-opens=java.base/java.io=ALL-UNNAMED, -XX:+UseG1GC, -Djava.io.tmpdir=/tmp/elasticsearch-3763503562971088099, -XX:+HeapDumpOnOutOfMemoryError, -XX:+ExitOnOutOfMemoryError, -XX:HeapDumpPath=data, -XX:ErrorFile=logs/hs_err_pid%p.log, -Xlog:gc*,gc+age=trace,safepoint:file=logs/gc.log:utctime,pid,tags:filecount=32,filesize=64m, -Xms31744m, -Xmx31744m, -XX:MaxDirectMemorySize=16642998272, -XX:InitiatingHeapOccupancyPercent=30, -XX:G1ReservePercent=25, -Des.path.home=/es/opt/elastic/elasticsearch-8.1.2, -Des.path.conf=/es/opt/elastic/elasticsearch-8.1.2/config, -Des.distribution.flavor=default, -Des.distribution.type=tar, -Des.bundled_jdk=true]
    [2022-04-14T14:23:39,443][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [aggs-matrix-stats]
    [2022-04-14T14:23:39,443][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [analysis-common]
    [2022-04-14T14:23:39,444][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [constant-keyword]
    [2022-04-14T14:23:39,444][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [data-streams]
    [2022-04-14T14:23:39,444][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [frozen-indices]
    [2022-04-14T14:23:39,444][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [ingest-common]
    [2022-04-14T14:23:39,444][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [ingest-geoip]
    [2022-04-14T14:23:39,445][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [ingest-user-agent]
    ....

修改启动脚本内容为后台启动

MEPRDAPP01:/es/opt/elastic/elasticsearch-8.1.2 # vim start.sh
    
    
    ./bin/elasticsearch -d

#### 其它 ####

1.  启动后估计四五分钟开始打印的日志出现拒绝连接的情况
    
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[\[::1\]:9305\], node \[null\], requesting \[false\] discovery result: \[\]\[\[::1\]:9305\] connect\_exception: 拒绝连接: /\[0:0:0:0:0:0:0:1\]:9305: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[\[::1\]:9303\], node \[null\], requesting \[false\] discovery result: \[\]\[\[::1\]:9303\] connect\_exception: 拒绝连接: /\[0:0:0:0:0:0:0:1\]:9303: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[127.0.0.1:9302\], node \[null\], requesting \[false\] discovery result: \[\]\[127.0.0.1:9302\] connect\_exception: 拒绝连接: /127.0.0.1:9302: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[\[::1\]:9301\], node \[null\], requesting \[false\] discovery result: \[\]\[\[::1\]:9301\] connect\_exception: 拒绝连接: /\[0:0:0:0:0:0:0:1\]:9301: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[127.0.0.1:9304\], node \[null\], requesting \[false\] discovery result: \[\]\[127.0.0.1:9304\] connect\_exception: 拒绝连接: /127.0.0.1:9304: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[127.0.0.1:9301\], node \[null\], requesting \[false\] discovery result: \[\]\[127.0.0.1:9301\] connect\_exception: 拒绝连接: /127.0.0.1:9301: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[127.0.0.1:9303\], node \[null\], requesting \[false\] discovery result: \[\]\[127.0.0.1:9303\] connect\_exception: 拒绝连接: /127.0.0.1:9303: 拒绝连接  
    \[2022-04-14T14:28:12,711\]\[WARN \]\[o.e.d.PeerFinder \] \[node-1\] address \[12

修改Elastic的配置文件elasticsearch.yml文件后所有配置如下

cluster.name: my-application
    node.name: node-1
    path.data: /es/opt/elastic/data
    path.logs: /es/opt/elastic/logs
    network.host: 0.0.0.0
    http.port: 9200
    discovery.seed_hosts: ["127.0.0.1"]
    xpack.security.enabled: true
    xpack.security.enrollment.enabled: true
    xpack.security.http.ssl:
      enabled: true
      keystore.path: certs/http.p12
    xpack.security.transport.ssl:
      enabled: true
      verification_mode: certificate
      keystore.path: certs/transport.p12
      truststore.path: certs/transport.p12
    cluster.initial_master_nodes: ["MEPRDAPP01"]

1.  修改启动内存 \[由于网上很多配置都是基于系统变量配置的，我们这里是用ES\_HOME的java启动的，所有直接设置jvm配置\]
    
    vim /es/opt/elastic/elasticsearch-8.1.2/config/jvm.options

清除注释

## 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,
    ## which should be named with .options suffix, 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:
    ##
    -Xms10g
    -Xmx10g
    ##
    ## See https://www.elastic.co/guide/en/elasticsearch/reference/8.1/heap-size.html
    ## for more information

[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5LqR5rW35qKm5bCY_size_20_color_FFFFFF_t_70_g_se_x_16]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/07/eef6139dcb0e450c9160e5b975c442d0.png