Avamar: Tomcat Issue: no se puede acceder a Client Manager. Los cambios realizados en server.xml no son persistentes

Summary: Se realizan cambios en server.xml, pero reiniciar el servicio tomcat revierte los cambios. En este artículo de la base de conocimientos, también se explica dónde no se puede acceder a tomcat porque el puerto 8509 no escucha en 127.0.0.1. ...

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Symptoms

Tomcat estaba activo, pero no se puede acceder a la página web de AAM (Client Manager): 
Error de servicio no disponible
/var/log/apache2/mod_jk.log muestra un error cuando se conecta en el puerto 8509.
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] jk_open_socket::jk_connect.c (758): connect to 127.0.0.1:8509 failed (errno=111)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] ajp_connect_to_endpoint::jk_ajp_common.c (1019): Failed opening socket to (127.0.0.1:8509) (errno=111)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [error] ajp_send_request::jk_ajp_common.c (1663): (cas) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] ajp_service::jk_ajp_common.c (2673): (cas) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] jk_open_socket::jk_connect.c (758): connect to 127.0.0.1:8509 failed (errno=111)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] ajp_connect_to_endpoint::jk_ajp_common.c (1019): Failed opening socket to (127.0.0.1:8509) (errno=111)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [error] ajp_send_request::jk_ajp_common.c (1663): (cas) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] ajp_service::jk_ajp_common.c (2673): (cas) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2)
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [error] ajp_service::jk_ajp_common.c (2693): (cas) connecting to tomcat failed.
[Tue Aug 16 17:57:01 2022] [26136:139641497630912] [info] jk_handler::mod_jk.c (2837): Service error=-3 for worker=cas


Curl to port 8509 to localhost mostraba que la conexión se rechazó.
root@testlab:/usr/local/avamar-tomcat/conf/#: curl -kv https://127.0.0.1:8509
* Rebuilt URL to: https://127.0.0.1:8509/
*   Trying 127.0.0.1...
* TCP_NODELAY set
* connect to 127.0.0.1 port 8509 failed: Connection refused
* Failed to connect to 127.0.0.1 port 8509: Connection refused
* Closing connection 0
curl: (7) Failed to connect to 127.0.0.1 port 8509: Connection refused
 


 
 

Cause

El puerto 8509 no está escuchando para el host local.

Resolution

1. Inicie sesión en el servidor Avamar como usuario administrador y eleve al usuario raíz: 

2. Respalde el archivo de configuración server.xml existente: 
cp -p /usr/local/avamar-tomcat/conf/server.xml /usr/local/avamar-tomcat/conf/server.xml-orig
cp -p  /usr/local/avamar/etc/server.xml /usr/local/avamar/etc/server.xml-orig

3. Edite /usr/local/avamar-tomcat/conf/server.xml  y /usr/local/avamar/etc/server.xml, agregue la línea resaltada a continuación: 
    
    
     
 
4. Guarde y cierre el archivo. 

5. Reinicie tomcat y Apache: 
emwebapp.sh --restart
service apache2 restart
 
 
Article Properties
Article Number: 000203109
Article Type: Solution
Last Modified: 14 Jul 2023
Version:  2
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