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Problem: When using those environments PROXY_XXX to change the tomcat setting. That won't have any issue when the container first startup. But it will cause the error after restarting that container. (ex: reboot the server or using docker restart)
antoniocheong@IS0105:~$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
174323bfef6a abesnier/guacamole "/init" 2 minutes ago Up 2 minutes (healthy) 8080/tcp guacamole
Then restart the container
antoniocheong@IS0105:~$ docker restart guacamole
guacamole
antoniocheong@IS0105:~$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
174323bfef6a abesnier/guacamole "/init" 5 minutes ago Up 47 seconds (health: starting) 8080/tcp guacamole
the container cannot start correctly. Below error found from container log
antoniocheong@IS0105:~$ docker logs -f --tail 100 guacamole
2024-07-11 02:19:38.602 UTC [2805] FATAL: role "root" does not exist
/var/run/postgresql:5432 - accepting connections
/usr/local/tomcat/conf/server.xml:151.231: Attribute internalProxies redefined
warded-proto" remoteIpProxiesHeader="x-forwarded-by" internalProxies="127.0.0.1"
^
/usr/local/tomcat/conf/server.xml:151.231: Attribute internalProxies redefined
warded-proto" remoteIpProxiesHeader="x-forwarded-by" internalProxies="127.0.0.1"
^
/usr/local/tomcat/conf/server.xml:151.231: Attribute internalProxies redefined
warded-proto" remoteIpProxiesHeader="x-forwarded-by" internalProxies="127.0.0.1"
^
/usr/local/tomcat/conf/server.xml:151.231: Attribute internalProxies redefined
warded-proto" remoteIpProxiesHeader="x-forwarded-by" internalProxies="127.0.0.1"
^
/usr/local/tomcat/conf/server.xml:151.231: Attribute internalProxies redefined
warded-proto" remoteIpProxiesHeader="x-forwarded-by" internalProxies="127.0.0.1"
^
Starting guacamole client...
NOTE: Picked up JDK_JAVA_OPTIONS: --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
11-Jul-2024 02:19:38.987 SEVERE [main] org.apache.tomcat.util.digester.Digester.fatalError Parse fatal error at line [151] column [231]
org.xml.sax.SAXParseException; systemId: file:/usr/local/tomcat/conf/server.xml; lineNumber: 151; columnNumber: 231; Attribute "internalProxies" was already specified for element "Valve".
at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanAttribute(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1535)
at org.apache.catalina.startup.Catalina.parseServerXml(Catalina.java:579)
at org.apache.catalina.startup.Catalina.load(Catalina.java:671)
at org.apache.catalina.startup.Catalina.load(Catalina.java:709)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:302)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:472)
11-Jul-2024 02:19:39.002 WARNING [main] org.apache.catalina.startup.Catalina.parseServerXml Unable to load server configuration from [/usr/local/tomcat/conf/server.xml]
org.xml.sax.SAXParseException; systemId: file:/usr/local/tomcat/conf/server.xml; lineNumber: 151; columnNumber: 231; Attribute "internalProxies" was already specified for element "Valve".
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1535)
at org.apache.catalina.startup.Catalina.parseServerXml(Catalina.java:579)
at org.apache.catalina.startup.Catalina.load(Catalina.java:671)
at org.apache.catalina.startup.Catalina.load(Catalina.java:709)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:302)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:472)
11-Jul-2024 02:19:39.007 SEVERE [main] org.apache.catalina.startup.Catalina.start Cannot start server, server instance is not configured
The /usr/local/tomcat/conf/server.xml was not modified correctly after the 2nd start.
antoniocheong@IS0105:~$ docker exec -it guacamole tail /usr/local/tomcat/conf/server.xml
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.RemoteIpValve" internalProxies="127.0.0.1"/>
<Valve className="org.apache.catalina.valves.RemoteIpValve" internalProxies="127.0.0.1" remoteIpHeader="x-forwarded-for" protocolHeader="x-forwarded-proto" remoteIpProxiesHeader="x-forwarded-by" internalProxies="127.0.0.1"/>
<Valve className="org.apache.catalina.valves.RemoteIpValve" internalProxies="127.0.0.1"/>
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b"/>
</Host>
</Engine>
</Service>
</Server>
the diff compare for the 1st and 2nd /usr/local/tomcat/conf/server.xml
Problem: When using those environments PROXY_XXX to change the tomcat setting. That won't have any issue when the container first startup. But it will cause the error after restarting that container. (ex:
reboot
the server or usingdocker restart
)Below show how to reproduce the problem:
The status is ok at the first start.
Then restart the container
the container cannot start correctly. Below error found from container log
The /usr/local/tomcat/conf/server.xml was not modified correctly after the 2nd start.
the diff compare for the 1st and 2nd /usr/local/tomcat/conf/server.xml
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