hi trying to install jboss on AWS ubunutu and access console from external/Internet

Followed so far
1. Installed Jboss on ubuntu followed these page (https://www.digitalocean.com/community/tutorials/how-to-install-jboss-on-ubuntu-12-10-64bit)
2. Followed this step to allow connections from external (http://technicles.com/how-to-make-your-jboss-or-wildfly-as-remotely-accessible/)
3. started with -b
./standalone.sh -b 0.0.0.0
./standalone.sh -b <AWS Elastic IP>

when I tried to connect I get below error on the browser
This site can’t be reached.<AWS Elastic IP> refused to connect.


after I enabled TRACE. I get more info but couldn't figure out what is wrong. Please help
Pls check the attached trace.log file

thanks in advance
trace.log

Good Morning!

What does the following two options actually do for DHCPd and does it work with failover?

allow booting;
allow bootp;


Im trying to configure DHCPd Failover and from what Im reading Im not quite sure if DHCP scopes that need PXE boot will work with DHCPd Failover. I believe the two options listed above would be needed but I dont know.  If so, should they be added in the primary and secondary dhcpd.conf files or the dhcpd.master?

Also the two options below -- are they also needed and should they be added in the primary and secondary dhcpd.conf files or the dhcpd.master too?

next-server x.x.x.x;
filename "xxx";

Thanks in advance!

Primary dhcpd.conf file

#authoritative;
ddns-update-style none;
ignore client-updates;
one-lease-per-client true;
omapi-port 7911;

#Failover peer section
failover peer "dhcp-partner" {
  primary;
  address server1.paychex.com;
  port 647;
  peer address server2.paychex.com;
  peer port 647;
  max-response-delay 60;
  max-unacked-updates 10;
  mclt 3600;
  split 153;
  load balance max seconds 3;
}
include "/etc/dhcp/dhcpd.master";

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Secondary dhcpd.conf file

#authoritative;
ddns-update-style none;
ignore client-updates;
one-lease-per-client true;
omapi-port 7911;

#Failover peer section
failover peer "dhcp-partner" {
  secondary;
  address server2.paychex.com;
  port 647;
  peer address server1.paychex.com;
  peer port 647;
  max-response-delay 60;
  max-unacked-updates 10;
  load balance max seconds 3;
}
include "/etc/dhcp/dhcpd.master";

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dhcpd.master file

option domain-name "example.com";
allow booting;
allow bootp;
next-server x.x.x.x;
filename "xxx";
option option-242 code 242 = string;

#dhcpd wants to listen on its own networks
subnet 17.8.4.0 netmask 255.255.252.0 {
  ignore unknown-clients;
}

#dhcpd wants to listen on its own network
subnet 19.4.8.0 netmask 255.255.252.0 {
  ignore unknown-clients;
}

#Scope [12.4.4.0] TEST PXE Boot
subnet 12.4.4.0 netmask 255.255.252.0 {
  option subnet-mask 255.255.252.0;
  option routers 12.4.4.1;
  option domain-name-servers 12.2.2.198;
  pool {
    failover peer "dhcp-partner";
    default-lease-time 300;
    max-lease-time 360;
    range 12.4.5.0 12.4.5.255;
  }
}

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I have one 12U1 SLES machine in which i want to open an port no 31015 for SAP HANA but unable to.

Netstat -tulpn also not showing LISTEN to this port .

I have also tried it with Yast2 firewall advance option but dont same problem

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      2475/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      2169/master
tcp        0      0 0.0.0.0:51013           0.0.0.0:*               LISTEN      2341/sapstartsrv
tcp        0      0 0.0.0.0:51014           0.0.0.0:*               LISTEN      2341/sapstartsrv
tcp        0      0 0.0.0.0:1128            0.0.0.0:*               LISTEN      2295/sapstartsrv
tcp        0      0 0.0.0.0:1129            0.0.0.0:*               LISTEN      2295/sapstartsrv
tcp        0      0 :::22                   :::*                    LISTEN      2475/sshd
tcp        0      0 ::1:25                  :::*                    LISTEN      2169/master
udp     5376      0 0.0.0.0:68              0.0.0.0:*                           1308/wickedd-dhcp4


telnet IP 31015
gives keep trying then unable to reach

telnet working for other ports like ssh and 1128 etc.

please help

redhat linux 7.3 i did disable ipv6 but still its shows.

tcp6       0      0 :::80                   :::*                    LISTEN      638/httpd
tcp6       0      0 :::22                   :::*                    LISTEN      647/sshd
tcp6       0      0 :::443                  :::*                    LISTEN      638/httpd

when i start the tomcat service i get this error.

server[3387]: May 29, 2017 2:33:36 PM org.apache.coyote.ajp.AjpMessage processHeader
server[3387]: SEVERE: Invalid message received with signature 18245

[root@web02 ~]# cat /etc/*-release
CentOS release 6.8 (Final)
LSB_VERSION=base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch
CentOS release 6.8 (Final)
CentOS release 6.8 (Final)

[root@web02 ~]# yum info -v apache-tomcat-apis
Loading "fastestmirror" plugin
Config time: 0.076
Yum Version: 3.2.29
rpmdb time: 0.000
Setting up Package Sacks
Loading mirror speeds from cached hostfile
 * base: centos.mirror.rafal.ca
 * extras: centos.mirror.rafal.ca
 * updates: ca.mirror.babylon.network
pkgsack time: 0.126
Installed Packages
Name        : apache-tomcat-apis
Arch        : noarch
Version     : 0.1
Release     : 1.el6
Size        : 246 k
Repo        : installed
From repo   : base
Committer   : Andrew Overholt <overholt@redhat.com>
Committime  : Tue Feb  2 07:00:00 2010
Buildtime   : Wed Nov 10 19:18:17 2010
Install time: Sun May 28 11:58:23 2017
Installed by: root <root>
Changed by  : System <unset>
Summary     : Tomcat Servlet and JSP APIs
URL         : http://tomcat.apache.org/
License     : ASL 2.0
Description : Apache Tomcat's Servlet 2.4/JSP 2.0 and Servlet 2.5/JSP 2.1 APIs.

[root@web01 ~]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

[root@web01 ~]# yum info -v apache-tomcat-apis
Loading "fastestmirror" plugin
Config time: 0.009
Yum version: 3.4.3
rpmdb time: 0.000
Setting up Package Sacks
Loading mirror speeds from cached hostfile
 * base: centos.mirror.globo.tech
 * extras: centos.bhs.mirrors.ovh.net…

in Unix

what is the meaning of below command



zgrep 'RPT|O|GetProducts' xyz.gz meaning
why we need RPT|o|
in the beginning what is the meaining of pipe here?
please advise

i downloaded driver from tp-link site.but i don't know how to install it? tell me step by step. or another solution for driver installation.

i have the following connection. i did clone a server and i would like to see whats running so i can stop those daemon on the cloned VM.
what is the best way to tell which app or service running?


Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name
tcp        0      0 127.0.0.1:8005              0.0.0.0:*                   LISTEN      1890/java
tcp        0      0 0.0.0.0:8009                0.0.0.0:*                   LISTEN      1890/java
tcp        0      0 127.0.0.1:27017             0.0.0.0:*                   LISTEN      2013/mongod
tcp        0      0 0.0.0.0:60333               0.0.0.0:*                   LISTEN      1300/rpc.statd
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN      1278/rpcbind
tcp        0      0 0.0.0.0:8080                0.0.0.0:*                   LISTEN      1890/java
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      1942/httpd
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      1731/sshd
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      1499/cupsd
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      1813/master
tcp        0      0 0.0.0.0:443                 0.0.0.0:*                   LISTEN      1942/httpd
tcp        0      0 ip:60288   …

We have been attempting for days now to join a Linux client to the Microsoft Active Directory domain.

The process we are using is located at:
https://wiki.archlinux.org/index.php/Active_Directory_Integration#Active_Directory_Configuration

When we get to the Join the Domain - using the command

net ads join -U Administrator

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We receive an error:

Failed to join domain: failed to lookup DC info for domain 'DOMAIN NAME' over rpc: Undetermined error

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Any help and more information about our configuration is available upon request.

Thanks,
Jim

Hi,

what are the best practices and features, options while using grep.

i am using these days to search in log files, files, directories, content etc

When should i give single quote '  '
like
zgrep 'xyz' aaa.gz


When should i give double quote " "
like
zgrep "xyz" aaa.gz


how to use tail and head etc along with grep to effectively monitor last or first 100 lines etc
please advise