Tomcat 9被沙箱化。
我想读取日志文件的数据。
文件位于“ / opt / zigbee2mqtt / data / 。”
我已经阅读了该线程并进行了尝试。 How to allow Tomcat war app to write in folder
我编辑了文件,并完成了systemctl daemon-reload
和systemctl restart tomcat9
。
然后,我编写了Java类,应该从日志文件中读取数据。但我例外。
java.io.FileNotFoundException: /opt/zigbee2mqtt/data/configuration.yaml (Permission denied)
at java.base/java.io.FileOutputStream.open0(Native Method)
at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298)
at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:237)
at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:187)
at com.fasterxml.jackson.dataformat.yaml.YAMLFactory.createGenerator(YAMLFactory.java:437)
at com.fasterxml.jackson.databind.ObjectMapper.createGenerator(ObjectMapper.java:1156)
at com.fasterxml.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:3570)
at zigbee.main.doupdateconfiguration(main.java:81)
at Servlet.configuration.doPost(configuration.java:72)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.ExpiresFilter.doFilter(ExpiresFilter.java:1226)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
我想如果我用chmod或chown进行了某些更改,但是Zigbee服务可能无法正常工作?我不是Linux专家。我不想做任何错误或不安全的事情。
root@raspberrypi:/opt/zigbee2mqtt/data# ls -halt
total 24K
drwxr-xr-x 6 pi pi 4.0K May 12 09:17 log
drwxr-xr-x 3 pi pi 4.0K May 10 18:31 .
-rw-r--r-- 1 pi pi 4.0K May 10 18:31 database.db
-rw-rw-r-- 1 pi pi 360 May 10 18:31 state.json
-rw-rw-r-- 1 pi pi 330 May 10 17:23 configuration.yaml
drwxr--r-- 12 pi pi 4.0K May 10 11:16 ..
Tomcat 9可以读取文件并且Zigbee可以更新文件的最佳解决方案是什么?
更新:
root@raspberrypi:/opt/zigbee2mqtt/data# ll
total 24K
-rw-rw-r-- 1 pi webservice 360 May 13 22:03 state.json
drwxrw-r-x 6 pi webservice 4.0K May 12 09:17 log
drwxr-xr-x 3 pi pi 4.0K May 10 18:31 .
-rw-rw-r-- 1 pi webservice 4.0K May 10 18:31 database.db
-rw-rw-r-- 1 pi webservice 330 May 10 17:23 configuration.yaml
drwxr--r-- 12 pi pi 4.0K May 10 11:16 ..
root@raspberrypi:/opt/zigbee2mqtt/data# id tomcat
uid=1001(tomcat) gid=1001(tomcat) groups=1001(tomcat),1002(webservice)
/etc/systemd/system/tomcat9.service.d/override.conf
的副词
[Service]
ReadWritePaths=/usr/local/jakarta-tomcat/webapps/smartzig/_x_logs/
ReadWritePaths=/opt/zigbee2mqtt/data/
ReadWritePaths=/opt/zigbee2mqtt/
ReadWritePaths=/opt/
答案 0 :(得分:3)
将tomcat添加到一个组,并向该组授予对该文件的所需访问权限,例如您可以创建一个名为webserver
的组。然后重新启动tomcat,然后重试。
步骤
$ sudo groupadd webserver
$ sudo usermod -a -G webserver tomcat9
$ sudo chgrp webserver configuration.yaml
$ sudo chmod g=rw configuration.yaml
$ sudo systemctl restart tomcat9
,通过向其添加权限来更新目录(包含文件)的组所有权
$ sudo chgrp webserver /opt/zigbee2mqtt/data/
$ sudo chgrp webserver /opt/zigbee2mqtt/
$ sudo chmod g=rwx /opt/zigbee2mqtt/data/
$ sudo chmod g=rwx /opt/zigbee2mqtt/
答案 1 :(得分:0)
yaml文件的权限为“ -rw-rw-r--”,它从左到右读取
因此,是否可以写入文件取决于哪个用户正在运行tomcat进程。但是每个人都应该能够读取该文件。如果无法读取文件,则可能以读/写模式而不是读取模式打开文件
您可以chmod 666
将该文件更改为“ -rw-rw-rw-”的权限