elasticsearch,Logging,Logstash,Logstash Grok" />
elasticsearch,logging,logstash,logstash-grok,Java,安装日志存储错误JAVA（OpenJDK 64位服务器VM警告）
我遵循官方文件，并编写了以下文件：安装日志存储错误JAVA（OpenJDK 64位服务器VM警告）,java,
elasticsearch,logging,logstash,logstash-grok,Java,
# Update repository
sudo apt-get update
# Install necessary things. Like SSL support and JDK
sudo apt-get install apt-transport-https default-jdk -y
# Download and install the GPG KEY. Add the repository for elasticsearch version 7. Update and install logstash
wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list
sudo apt-get update && sudo apt-get install logstash -y
# configure ES daemon
sudo /bin/systemctl daemon-reload
sudo /bin/systemctl enable logstash.service
sudo systemctl start logstash.service
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.headius.backport9.modules.Modules to method sun.nio.ch.NativeThread.signal(long)
WARNING: Please consider reporting this to the maintainers of com.headius.backport9.modules.Modules
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/pleaserun-0.0.31/lib/pleaserun/platform/base.rb:112: warning: constant ::Fixnum is deprecated
Successfully created system startup script for Logstash
Created symlink /etc/systemd/system/multi-user.target.wants/logstash.service → /etc/systemd/system/logstash.service.
/usr/share/logstash/bin/logstash -e "input { stdin { } } output { stdout {} }"
luis@ubuntu18:~$ /usr/share/logstash/bin/logstash -e "input { stdin { } } output { stdout {} }"
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.headius.backport9.modules.Modules (file:/usr/share/logstash/logstash-core/lib/jars/jruby-complete-9.2.11.1.jar) to method sun.nio.ch.NativeThread.signal(long)
WARNING: Please consider reporting this to the maintainers of com.headius.backport9.modules.Modules
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
WARNING: Could not find logstash.yml which is typically located in $LS_HOME/config or /etc/logstash. You can specify the path using --path.settings. Continuing using the defaults
Could not find log4j2 configuration at path /usr/share/logstash/config/log4j2.properties. Using default config which logs errors to the console
[FATAL] 2020-07-18 21:49:19.544 [main] runner - An unexpected error occurred! {:error=>#<ArgumentError: Path "/usr/share/logstash/data" must be a writable directory. It is not writable.>, :backtrace=>["/usr/share/logstash/logstash-core/lib/logstash/settings.rb:528:in `validate'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:288:in `validate_value'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:199:in `block in validate_all'", "org/jruby/RubyHash.java:1415:in `each'", "/usr/share/logstash/logstash-core/lib/logstash/settings.rb:198:in `validate_all'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:310:in `execute'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:268:in `run'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:132:in `run'", "/usr/share/logstash/lib/bootstrap/environment.rb:88:in `<main>'"]}
[ERROR] 2020-07-18 21:49:19.633 [main] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit
luis@ubuntu18：~$/usr/share/logstash/bin/logstash-e“输入{stdin{}}输出{stdout{}”
OpenJDK 64位服务器VM警告：选项UseConcMarkSweepGC在9.0版中已被弃用，并可能在将来的版本中被删除。
警告：发生了非法的反射访问操作
警告：com.headius.backport9.modules.modules（文件：/usr/share/logstash/logstash core/lib/jars/jruby-complete-9.2.11.1.jar）对方法sun.nio.ch.NativeThread.signal（长）的非法反射访问
警告：请考虑将此报告给COM.HeADUS.BACKPORT9模块。
警告：使用--invalize access=warn以启用对进一步非法访问操作的警告
警告：所有非法访问操作将在未来版本中被拒绝
警告：找不到logstash.yml，它通常位于$LS_HOME/config或/etc/logstash中。您可以使用--path.settings指定路径。继续使用默认值
在路径/usr/share/logstash/config/log4j2.properties中找不到log4j2配置。使用默认配置将错误记录到控制台
[致命]2020-07-18 21:49:19.544[主要]跑步者-发生意外错误！{：error=>#，：backtrace=>[“/usr/share/logstash/logstash core/lib/logstash/settings.rb:528:in‘validate’”、/usr/share/logstash/logstash core/lib/logstash/settings.rb:288:in‘validate_value’、/usr/share/logstash/lib/logstash/settings.rb:199:in‘block in‘validate_all’、‘org/jruby/RubyHash.java:1415:in‘each’，“/usr/share/logstash/logstash core/lib/logstash/settings.rb:198:in‘validate_all’”、/usr/share/logstash/logstash-core/lib/logstash/runner.rb:310:in‘execute’、/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in‘run’、/usr/share/logstash/logstash-core/lib/lib/clamp/runner.268:in‘run’。”/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:132:in‘run’，“/usr/share/logstash/lib/bootstrap/environment.rb:88:in‘in’”
[错误]2020-07-18 21:49:19.633[main]Logstash-java.lang.IllegalStateException:Logstash因错误而停止处理：（SystemExit）退出
我不知道这是否是因为java版本（openjdk 11.0.7 2020-04-14）或者另一个错误。我从未使用过java，所以这些错误让我有点困惑。谢谢大家。查看第行下方特定的错误堆栈跟踪，这意味着运行logstash进程的用户不能写入
/usr/share/logstash/data