Kill -9 -1 combination Post: 303040982

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Top Forums UNIX for Beginners Questions & Answers Kill -9 -1 combination Post 303040982 by alexcol on Monday 11th of November 2019 03:12:59 PM

11-11-2019

Registered User

Good afternnon:

Thank you very much all of you for your help

This is 1 of 4th web application node using apache as a webserver, and as a Production env it receives all the htpp traffic from internet throuh a load balancer called (F5 -A10) and by a java process called germ.jar open sockets to port 89xx (load balancer), so below is the information:

Code:

$ /bin/bash --version
GNU bash, version 4.2.46(2)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later

Code:

$ uname -a
Linux serverbam04.nh 4.1.12-124.15.2.el7uek.x86_64 #2 SMP Tue May 22 11:52:31 PDT 2018 x86_64 x86_64 x86_64 GNU/Linux

Code:

openjdk version "1.8.0_171"
OpenJDK Runtime Environment (build 1.8.0_171-b10)
OpenJDK 64-Bit Server VM (build 25.171-b10, mixed mode)

webserver apache

Code:

EE-plus-7.0.2/lib/openejb-javaagent.jar -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -classpath /usr/share/tomEE-plus-7.0.2/bin/bootstrap.jar:/usr/share/tomEE-plus-7.0.2/bin/tomcat-juli.jar -Dcatalina.base=/usr/share/tomEE-plus-7.0.2 -Dcatalina.home=/usr/share/tomEE-plus-7.0.2 -Djava.io.tmpdir=/usr/share/tomEE-plus-7.0.2/temp org.apache.catalina.startup.Bootstrap start

The reason why i asked whad does kill -9 -1 does is because our web application provider suggested every time we shut down the app, i will have to run this command to make sure all session are cleaned, but i didnt know how powerful or dangerous this command will be

some time ago the user med has 1615 processes because a shell that runs every 5 minutes got stuck and blocked the node, and we contact aour System Administrator but these processes could never get killed and this node had to be started

Code:

med+ 32737     1  0 14:49 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh
 32742     1  0 13:15 ?        00:00:00 /bin/bash /app/perm/backend/check_port_process/CHECK_PORT_PROCESS_MAIN.sh
$ ps -fu med|wc -l
1615

kill command

Code:

ps -fu med | grep -v grep | awk '{print $2}' | xargs kill -9

Thanks again for your help

alexcol

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LEARN ABOUT DEBIAN

irsend

IRSEND(1)							   User Commands							 IRSEND(1)

NAME

       irsend - basic LIRC program to send infra-red commands

SYNOPSIS

       irsend [options] DIRECTIVE REMOTE CODE [CODE...]

DESCRIPTION

       Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such
       as TV boxes, HiFi sets, etc.

       DIRECTIVE can be:
	  SEND_ONCE	    - send CODE [CODE ...] once
	  SEND_START	    - start repeating CODE
	  SEND_STOP	    - stop repeating CODE
	  LIST		    - list configured remote items
	  SET_TRANSMITTERS  - set transmitters NUM [NUM ...]
	  SIMULATE	    - simulate IR event

       REMOTE is the name of a remote, as described in the lircd configuration file.

       CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file.

       NUM is the transmitter number of the hardware device.

       For the LIST DIRECTIVE, REMOTE and/or CODE can be empty:

	  LIST	 ""    ""   - list all configured remote names
	  LIST REMOTE  ""   - list all codes of REMOTE
	  LIST REMOTE CODE  - list only CODE of REMOTE

       The SIMULATE command only works if it has been explicitly enabled in lircd.

       -h --help
	      display usage summary

       -v --version
	      display version

       -d --device
	      use given lircd socket [/var/run/lirc/lircd]

       -a --address=host[:port]
	      connect to lircd at this address

       -# --count=n
	      send command n times

EXAMPLES

	  irsend LIST DenonTuner ""
	  irsend SEND_ONCE  DenonTuner PROG-SCAN
	  irsend SEND_ONCE  OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP
	  irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3
	  irsend SEND_STOP  OnkyoAmpli VOL-DOWN
	  irsend SET_TRANSMITTERS 1
	  irsend SET_TRANSMITTERS 1 3 4
	  irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S"

FILES

       /etc/lirc/lircd.conf
	      Default lircd configuration file.  It should contain all the remotes, their infra-red codes and the corresponding timing	and  wave-
	      form details.

DIAGNOSTICS

       If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics:
       "irsend: could not connect to socket"
       "irsend: Connection refused" (or "Permission denied").

SEE ALSO

       The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.

       lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org.

irsend 0.9.0-pre1						   October 2010 							 IRSEND(1)

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LEARN ABOUT DEBIAN

irsend