elasticsearch - 在Raspberry Pi上运行ElasticSearch:无法创建Java虚拟机

Question

我正在尝试在具有Raspbian(Buster)的Raspberry Pi 3B上运行ElasticSearch。我在https://www.elastic.co/guide/en/elasticsearch/reference/master/deb.html上遵循了指南。

我可以启动/停止该服务，但似乎无法连接到HTTP端点(例如rpi-ip-address:9200)或curl 127.0.0.1:9200。它只是说:

curl: (7) Failed to connect to 127.0.0.1 port 9200: Connection refused

这些是Raspberry Pi上的Java版本:

pi@raspberrypi:~ $ java -version
openjdk version "11.0.5" 2019-10-15
OpenJDK Runtime Environment (build 11.0.5+10-post-Raspbian-1deb10u1)
OpenJDK Server VM (build 11.0.5+10-post-Raspbian-1deb10u1, mixed mode)

Linux信息:

pi@raspberrypi:~ $ uname -r
4.19.88-v7+

您可以获取有关直接运行服务二进制文件时出现问题的更多信息:

pi@raspberrypi:~ $ sudo service elasticsearch stop
pi@raspberrypi:~ $ sudo service elasticsearch status
● elasticsearch.service - LSB: Starts elasticsearch
   Loaded: loaded (/etc/init.d/elasticsearch; generated)
   Active: inactive (dead) since Sun 2019-12-15 14:43:16 GMT; 2min 19s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 8654 ExecStart=/etc/init.d/elasticsearch start (code=exited, status=0/SUCCESS)
  Process: 18073 ExecStop=/etc/init.d/elasticsearch stop (code=exited, status=0/SUCCESS)

Dec 15 11:53:21 raspberrypi systemd[1]: Starting LSB: Starts elasticsearch...
Dec 15 11:53:21 raspberrypi elasticsearch[8654]: [warning] /etc/init.d/elasticsearch: JVM flavor 'sun6' not understood
Dec 15 11:53:21 raspberrypi elasticsearch[8654]: Starting Elasticsearch Server:.
Dec 15 11:53:21 raspberrypi systemd[1]: Started LSB: Starts elasticsearch.
Dec 15 14:43:16 raspberrypi systemd[1]: Stopping LSB: Starts elasticsearch...
Dec 15 14:43:16 raspberrypi elasticsearch[18073]: [warning] /etc/init.d/elasticsearch: JVM flavor 'sun6' not understood
Dec 15 14:43:16 raspberrypi elasticsearch[18073]: Stopping Elasticsearch Server: Elasticsearch Server is not running but pid file exists, cleaning up.
Dec 15 14:43:16 raspberrypi systemd[1]: elasticsearch.service: Succeeded.
Dec 15 14:43:16 raspberrypi systemd[1]: Stopped LSB: Starts elasticsearch.

然后:

pi@raspberrypi:~ $ sudo /usr/share/elasticsearch/bin/elasticsearch
Unrecognized VM option 'UseParNewGC'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

我已经检查了其他线程，但是找不到解决方案。

需要检查的更多内容:

/etc/elasticsearch/elasticsearch.yml:插入的network.bind_host: 0.0.0.0

/ etc / default / elasticsearch:

未注释的 START_DAEMON = true

添加了 JAVA_HOME = / usr / lib / jvm / java-11-openjdk-armhf (此文件夹实际上存在)

注释和修改: ES_HEAP_SIZE = 256m

没有日志写入 / var / log / elasticsearch /

之后，当我再次启动ES时:

pi@raspberrypi:~ $ sudo service elasticsearch start
pi@raspberrypi:~ $ sudo service elasticsearch status
● elasticsearch.service - LSB: Starts elasticsearch
   Loaded: loaded (/etc/init.d/elasticsearch; generated)
   Active: active (exited) since Sun 2019-12-15 14:57:29 GMT; 3s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 18846 ExecStart=/etc/init.d/elasticsearch start (code=exited, status=0/SUCCESS)

Dec 15 14:57:29 raspberrypi systemd[1]: Starting LSB: Starts elasticsearch...
Dec 15 14:57:29 raspberrypi elasticsearch[18846]: [warning] /etc/init.d/elasticsearch: JVM flavor 'sun6' not understood
Dec 15 14:57:29 raspberrypi elasticsearch[18846]: Starting Elasticsearch Server:.
Dec 15 14:57:29 raspberrypi systemd[1]: Started LSB: Starts elasticsearch.

这些是openjdk运行时( /usr/lib/java-wrappers/jvm-list.sh ):

...

# Now, free runtimes:
__jvm_openjdk6="/usr/lib/jvm/java-6-openjdk-$__arch /usr/lib/jvm/java-6-openjdk"
__jvm_openjdk7="/usr/lib/jvm/java-7-openjdk-$__arch /usr/lib/jvm/java-7-openjdk"
__jvm_openjdk8="/usr/lib/jvm/java-8-openjdk-$__arch /usr/lib/jvm/java-8-openjdk"
__jvm_openjdk9="/usr/lib/jvm/java-9-openjdk-$__arch /usr/lib/jvm/java-9-openjdk"
__jvm_openjdk10="/usr/lib/jvm/java-10-openjdk-$__arch /usr/lib/jvm/java-10-openjdk"
__jvm_openjdk11="/usr/lib/jvm/java-11-openjdk-$__arch /usr/lib/jvm/java-11-openjdk"

为什么不能启动Java虚拟机？

Answer 1

openjdk版本“11.0.5”可能是一个问题。安装JDK 8并设置路径。

堆大小也可能是一个问题。我相信RasberrypPI 3B只有1 GB的内存。尽可能分配。

如果要远程访问防火墙，请检查防火墙配置。