小编典典

为什么在Ubuntu 16.04上手动启动Elasticsearch但不将其作为服务启动?

elasticsearch

我在运行Ubuntu 16.04 LTS的ARM Odroid XU4上安装了ELasticsearch 6和JDK 1.8.0_161。没有错误。

当我尝试将Elasticsearch作为服务启动时,无法在端口9200上连接到localhost,并且服务状态显示为:

~ $ > sudo service elasticsearch status
● elasticsearch.service - LSB: Starts elasticsearch
   Loaded: loaded (/etc/init.d/elasticsearch; bad; vendor preset: enabled)
   Active: active (exited) since Mon 2018-01-22 10:43:18 UTC; 9min ago
     Docs: man:systemd-sysv-generator(8)

Jan 22 10:43:18 lego systemd[1]: Starting LSB: Starts elasticsearch...
Jan 22 10:43:18 lego systemd[1]: Started LSB: Starts elasticsearch.
Jan 22 10:44:07 lego systemd[1]: Started LSB: Starts elasticsearch.

没有日志。不知道在哪里看。nofile限制在中设置为65536 /etc/security/limits.conf。我不知道在其他地方可以找到诊断信息。

虽然,当我通过手动启动Elasticsearch时sudo /usr/shared/elasticsearch/bin/elasticsearch,它可以按预期工作:

~ $ > sudo /usr/share/elasticsearch/bin/elasticsearch
[2018-01-22 10:55:55,944][WARN ][bootstrap                ] jvm uses the client vm, make sure to run `java` with the server vm for best performance by adding `-server` to the command line
[2018-01-22 10:55:56,073][INFO ][node                     ] [Ariel] version[1.7.3], pid[1126], build[NA/NA]
[2018-01-22 10:55:56,074][INFO ][node                     ] [Ariel] initializing ...
[2018-01-22 10:55:56,521][INFO ][plugins                  ] [Ariel] loaded [], sites []
[2018-01-22 10:55:56,638][INFO ][env                      ] [Ariel] using [1] data paths, mounts [[/ (/dev/mmcblk0p2)]], net usable_space 
[54.4gb], net total_space [57.2gb], types [ext4]
[2018-01-22 10:56:01,853][INFO ][node                     ] [Ariel] initialized
[2018-01-22 10:56:01,854][INFO ][node                     ] [Ariel] starting ...
[2018-01-22 10:56:02,080][INFO ][transport                ] [Ariel] bound_address {inet[/0:0:0:0:0:0:0:0:9300]}, publish_address {inet[/192.168.0.103:9300]}
[2018-01-22 10:56:02,125][INFO ][discovery                ] [Ariel] elasticsearch/FtFOljAORnevIAOAFabptg
[2018-01-22 10:56:05,933][INFO ][cluster.service          ] [Ariel] new_master [Ariel][FtFOljAORnevIAOAFabptg][lego]
[inet[/192.168.0.103:9300]], reason: zen-disco-join (elected_as_master)
[2018-01-22 10:56:05,987][INFO ][http                     ] [Ariel] bound_address {inet[/0:0:0:0:0:0:0:0:9200]}, publish_address {inet[/192.168.0.103:9200]}
[2018-01-22 10:56:05,988][INFO ][node                     ] [Ariel] started
[2018-01-22 10:56:06,014][INFO ][gateway                  ] [Ariel] 
recovered [0] indices into cluster_state
我缺少什么重要的步骤?我在这里关注了所有内容:https
//www.elastic.co/guide/zh-
CN/elasticsearch/reference/current/deb.html

编辑:我尝试设置START_DAEMON=true/etc/default/elasticsearch,这确实
重要,但是也没有成功。深入研究内部设置的值/etc/default/elasticsearch,我发现了这个问题。有关完整解决方案的完整细分,请参阅我的最终答案。


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2020-06-22

共1个答案

小编典典

正如@Suaro指出的那样:我们的问题与该问题中所讨论的[问题具有几乎相同的症状,并且该线程在第一个链接中重申了START_DAEMON解决方案。这是一个好的开始,但是对我而言,它没有提供全面的解决方案。我仔细研究了权限,堆大小和所有权,以找到最终解决方案。

这些是按照截至2018年1月的Elasticsearch
debian安装说明
在Ubuntu
16.04上安装Elasticsearch 6的步骤:

  1. 设置START_DAEMON=true/etc/default/elasticsearch并重新启动服务。
  2. 如果系统有2GB RAM(在我的情况下为true),请设置 ES_HEAP_SIZE=1g
  3. 在中检查elasticsearch目录的权限/usr/share/elasticsearchroot拥有这些的机会 不大理想如果您还不了解,那么以root用户身份运行任何服务都会使您的基础架构受到攻击者的利用。
  4. 在#3的诱惑是设置ES_USER=rootES_GROUP=root这将解决您的问题。Elasticsearch将作为一项服务启动(即使他们的产品文档声称ES不会以形式运行root)。 不要那样做。
  5. 相反,请检查该elasticsearch用户是否在本地,以及是否存在相同名称的组。

    $ cut -d: -f1 /etc/passwd
    

    $ cut -d: -f1 /etc/group

  6. 然后,将所有elasticsearch文件夹和资源的所有权更改为elasticsearch用户和组。

    $ ~ $ > ll /usr/share/elasticsearch/
    

    total 8.0K
    drwxr-xr-x 2 elasticsearch 4.0K Jan 22 10:02 bin/
    lrwxrwxrwx 1 elasticsearch 18 Dec 24 2015 config -> /etc/elasticsearch/
    lrwxrwxrwx 1 elasticsearch 22 Dec 24 2015 data -> /var/lib/elasticsearch/
    lrwxrwxrwx 1 elasticsearch 22 Dec 24 2015 logs -> /var/log/elasticsearch/
    drwxr-xr-x 2 elasticsearch 4.0K Dec 24 2015 plugins/

    ^– Take note that the symlinked directories need to be adjusted too

    $ sudo chown -R elasticsearch:elasticsearch /usr/share/elasticsearch
    $ sudo chown -R elasticsearch:elasticsearch /etc/elasticsearch/
    $ sudo chown -R elasticsearch:elasticsearch /var/lib/elasticsearch/
    $ sudo chown -R elasticsearch:elasticsearch /var/log/elasticsearch/

  7. 然后,设置的值ES_USER=elasticsearch,并ES_GROUP=elasticsearch/etc/default/elasticsearch如果他们没有设置已经这样(如果你的诱惑,得出每#4)。

  8. 再试一次…

    ~ $ > sudo service elasticsearch status
    

    ● elasticsearch.service - LSB: Starts elasticsearch
    Loaded: loaded (/etc/init.d/elasticsearch; bad; vendor preset: enabled)
    Active: active (exited) since Mon 2018-01-22 20:51:29 UTC; 2min 25s ago
    Docs: man:systemd-sysv-generator(8)
    Process: 3133 ExecStop=/etc/init.d/elasticsearch stop (code=exited, status=0/SUCCESS)
    Process: 3209 ExecStart=/etc/init.d/elasticsearch start (code=exited, status=0/SUCCESS)

    ~ $ > sudo systemctl restart elasticsearch.service

    ~ $ > sudo service elasticsearch status
    ● elasticsearch.service - LSB: Starts elasticsearch
    Loaded: loaded (/etc/init.d/elasticsearch; bad; vendor preset: enabled)
    Active: active (running) since Mon 2018-01-22 20:54:05 UTC; 2s ago
    Docs: man:systemd-sysv-generator(8)
    Process: 3306 ExecStop=/etc/init.d/elasticsearch stop (code=exited, status=0/SUCCESS)
    Process: 3340 ExecStart=/etc/init.d/elasticsearch start (code=exited, status=0/SUCCESS)
    CGroup: /system.slice/elasticsearch.service
    └─3391 /usr/lib/jvm/java-8-openjdk-armhf/bin/java -Xms1g -Xmx1g -Djava.awt.headless=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -XX:+DisableExplicitGC -Dfile.encoding=UTF-8 -Delasticsearch -Des.pidfil

    Jan 22 20:54:04 lego systemd[1]: Starting LSB: Starts elasticsearch…
    Jan 22 20:54:05 lego elasticsearch[3340]: * Starting Elasticsearch Server
    Jan 22 20:54:05 lego elasticsearch[3340]: …done.
    Jan 22 20:54:05 lego systemd[1]: Started LSB: Starts elasticsearch.
    Jan 22 20:51:29 lego systemd[1]: Starting LSB: Starts elasticsearch…

维奥拉!

~ $ > curl -XGET 'localhost:9200/?pretty'
{
  "status" : 200,
  "name" : "Svarog",
  "cluster_name" : "elasticsearch",
  "version" : {
    "number" : "1.7.3",
    "build_hash" : "NA",
    "build_timestamp" : "NA",
    "build_snapshot" : false,
    "lucene_version" : "4.10.4"
  },
  "tagline" : "You Know, for Search"
}
2020-06-22