tomcat webapp not showing up on browser due to connection timeout

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i deployed some webapps under /opt/tomcat/webapps, using the port 8090 (change made in server.xml), Linux/Ubuntu 16.04. It used to work fine.

At one pointed I decided to update my firewall, something must have gone wrong during the process and now my web apps stopped showing up.

Here is my diagnosis:

$ sudo ufw status verbose

Status: active

Logging: on (low)

Default: allow (incoming), allow (outgoing), disabled (routed)

New profiles: skip



To                         Action      From

--                         ------      ----

...

8090                       ALLOW IN    Anywhere                  

...     

8090 (v6)                  ALLOW IN    Anywhere (v6)        





$ ps -ef | grep tomcat

tomcat    1327     1  0 22:24 ?        00:00:09 /usr/lib/jvm/java-1.8.0-openjdk-amd64/jre/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Xms512M -Xmx1024M -server -XX:+UseParallelGC -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start



$ sudo netstat -plnt | grep 8090

tcp6       0      0 :::8090                 :::*                    LISTEN      1327/java



$ nmap localhost



Starting Nmap 7.01 ( https://nmap.org ) at 2018-11-08 23:23 EST

Nmap scan report for localhost (127.0.0.1)

Host is up (0.00013s latency).

PORT     STATE SERVICE

...

8090/tcp open  unknown

it appears to me that tomcat is up and the port is open, so why I can't see my web app pages? The error message on the browser is:

The connection has timed out

what step did I just miss?

asked Nov 9 at 4:30

J.E.Y

349315

add a comment |

up vote
-1
down vote

favorite

i deployed some webapps under /opt/tomcat/webapps, using the port 8090 (change made in server.xml), Linux/Ubuntu 16.04. It used to work fine.

At one pointed I decided to update my firewall, something must have gone wrong during the process and now my web apps stopped showing up.

Here is my diagnosis:

$ sudo ufw status verbose

Status: active

Logging: on (low)

Default: allow (incoming), allow (outgoing), disabled (routed)

New profiles: skip



To                         Action      From

--                         ------      ----

...

8090                       ALLOW IN    Anywhere                  

...     

8090 (v6)                  ALLOW IN    Anywhere (v6)        





$ ps -ef | grep tomcat

tomcat    1327     1  0 22:24 ?        00:00:09 /usr/lib/jvm/java-1.8.0-openjdk-amd64/jre/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Xms512M -Xmx1024M -server -XX:+UseParallelGC -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start



$ sudo netstat -plnt | grep 8090

tcp6       0      0 :::8090                 :::*                    LISTEN      1327/java



$ nmap localhost



Starting Nmap 7.01 ( https://nmap.org ) at 2018-11-08 23:23 EST

Nmap scan report for localhost (127.0.0.1)

Host is up (0.00013s latency).

PORT     STATE SERVICE

...

8090/tcp open  unknown

it appears to me that tomcat is up and the port is open, so why I can't see my web app pages? The error message on the browser is:

The connection has timed out

what step did I just miss?

asked Nov 9 at 4:30

J.E.Y

349315

add a comment |

up vote
-1
down vote

favorite

i deployed some webapps under /opt/tomcat/webapps, using the port 8090 (change made in server.xml), Linux/Ubuntu 16.04. It used to work fine.

At one pointed I decided to update my firewall, something must have gone wrong during the process and now my web apps stopped showing up.

Here is my diagnosis:

$ sudo ufw status verbose

Status: active

Logging: on (low)

Default: allow (incoming), allow (outgoing), disabled (routed)

New profiles: skip



To                         Action      From

--                         ------      ----

...

8090                       ALLOW IN    Anywhere                  

...     

8090 (v6)                  ALLOW IN    Anywhere (v6)        





$ ps -ef | grep tomcat

tomcat    1327     1  0 22:24 ?        00:00:09 /usr/lib/jvm/java-1.8.0-openjdk-amd64/jre/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Xms512M -Xmx1024M -server -XX:+UseParallelGC -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start



$ sudo netstat -plnt | grep 8090

tcp6       0      0 :::8090                 :::*                    LISTEN      1327/java



$ nmap localhost



Starting Nmap 7.01 ( https://nmap.org ) at 2018-11-08 23:23 EST

Nmap scan report for localhost (127.0.0.1)

Host is up (0.00013s latency).

PORT     STATE SERVICE

...

8090/tcp open  unknown

it appears to me that tomcat is up and the port is open, so why I can't see my web app pages? The error message on the browser is:

The connection has timed out

what step did I just miss?

asked Nov 9 at 4:30

J.E.Y

349315

i deployed some webapps under /opt/tomcat/webapps, using the port 8090 (change made in server.xml), Linux/Ubuntu 16.04. It used to work fine.

At one pointed I decided to update my firewall, something must have gone wrong during the process and now my web apps stopped showing up.

Here is my diagnosis:

$ sudo ufw status verbose

Status: active

Logging: on (low)

Default: allow (incoming), allow (outgoing), disabled (routed)

New profiles: skip



To                         Action      From

--                         ------      ----

...

8090                       ALLOW IN    Anywhere                  

...     

8090 (v6)                  ALLOW IN    Anywhere (v6)        





$ ps -ef | grep tomcat

tomcat    1327     1  0 22:24 ?        00:00:09 /usr/lib/jvm/java-1.8.0-openjdk-amd64/jre/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Xms512M -Xmx1024M -server -XX:+UseParallelGC -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start



$ sudo netstat -plnt | grep 8090

tcp6       0      0 :::8090                 :::*                    LISTEN      1327/java



$ nmap localhost



Starting Nmap 7.01 ( https://nmap.org ) at 2018-11-08 23:23 EST

Nmap scan report for localhost (127.0.0.1)

Host is up (0.00013s latency).

PORT     STATE SERVICE

...

8090/tcp open  unknown

it appears to me that tomcat is up and the port is open, so why I can't see my web app pages? The error message on the browser is:

The connection has timed out

what step did I just miss?

tomcat ubuntu-16.04 iptables ufw

asked Nov 9 at 4:30

J.E.Y

349315

asked Nov 9 at 4:30

J.E.Y

349315

asked Nov 9 at 4:30

J.E.Y

349315

asked Nov 9 at 4:30

J.E.Y

349315

asked Nov 9 at 4:30

J.E.Y

349315

add a comment |

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