Nov 03

Docker install on OpenSuse Tumbleweed 

sudo zypper in docker
sudo systemctl start docker
sudo systemctl enable docker
sudo /usr/sbin/usermod -a -G docker dmalpass
sudo docker run --rm -i -t opensuse /bin/bash

 

 

 

Sep 18

Quick one liner to get a full OPatch inventory of your Oracle Middleware Server

After trying to use OEM to grab all the patches from every installed Oracle product, I gave up and decided to write my own one liner. Customize to match your weblogic install directory.

This script will first find all Middleware Homes specifically using Weblogic, then run the lsinventory or lspatches to display a full listing.

  • First, sign in as the “oracle” user
  • Second, run the following command on your linux system

ora-plane

 

for line in `locate oraInst.loc|grep weblogic |sed 's/.\{12\}$//'`;do /u01/app/oracle/weblogic1036R2/oracle_common/OPatch/opatch lsinv -detail -oh $line;done

 

Aug 26

How to extend your Wireless Network with DD-WRT

I am always frustrated with WiFi. It seems like a black art needing certain spirits and voodoo dolls in place. Anyway, after struggling for a bit, I thought I would document how I extended my Netgear  WNDR3700v2 network hundreds of feet using older Buffalo Routers.

I have a barn about 100 feet away from my house and obviously need Man Cave stuff in there including streaming video and audio. After looking a Cantennas and other Magical tools, I came up with a simple solutions using OpenSource software.

Goto https://www.dd-wrt.com and search for you Wireless Router in their database. In my case, Buffalo WHR-G300N v2.

First of all read the instructions and make sure you understand the flashing process before proceeding. I have and you may BRICK your router to a useless light flasher.

Download the two bin files to your computer. In my case the Buffalo routers already had a “DD-WRT Like” interface, so all I had to do was update using the Buffalo to DD-WRT firmware, followed by the whr-g300nv2-firmware-MULTI.bin

Once you have the firmware installed and router rebooted, follow the below screenshots as a guide.

Setup / Wireless / Security etc.

  • Disable WAN
  • Set you IP info to your local network

Screenshot from 2015-08-26 20:56:36

  • Choose “Client Bridge”
  • Match your Wireless SID and security from your First Main Router
  • Add a Virtual Interface and Broadcast you new SID

Screenshot from 2015-08-26 20:58:27

  • Set your wireless security to match your main router
  • Secure your Virtual Interface with same or different security.

Screenshot from 2015-08-26 20:59:07

  • IMPORTANT Choose Router from the Operating Mode. I futsed with this for an hour
  • Once that is set to Router, your routing will actually work as well as DNS.

Screenshot from 2015-08-26 20:59:55

  • Goto Status and Wireless to check your connection to Main Router. You should see MAC Address and Signal.

Screenshot from 2015-08-26 21:00:36

  • Sit back and grab a beer!

 

 

 

 

Jul 21

Weblogic Startup Scripts

The following scripts and procedure allows stopping and starting of Weblogic Instances using Jython (Python) scripts and the nodemanager. Services are then created and can be used at startup and shutown for your NodeManager, Admin Server, and Managed Servers.

Assumptions:

Version = Weblogic 10.3.6
MW_HOME = /u01/app/oracle/weblogic1036R2
JAVA_HOME = /u01/app/jdk
DOMAIN = IDMdomain
BOOTSCRIPTS LOCATION = /u01/app/oracle/$MW_HOME/bootscripts
Node Manager is installed and configured.

Configure the nodemanager as follows

#Wed Nov 12 14:39:50 EST 2014
DomainsFile=/u01/app/oracle/weblogic1036R2/wlserver_10.3/common/nodemanager/nodemanager.domains
LogLimit=0
PropertiesVersion=10.3
DomainsDirRemoteSharingEnabled=false
javaHome=/u01/app/oracle/jrockit-jdk
AuthenticationEnabled=false
NodeManagerHome=/u01/app/oracle/weblogic1036R2/wlserver_10.3/common/nodemanager
LogLevel=INFO
DomainsFileEnabled=true
StartScriptName=startWebLogic.sh
ListenAddress=oam1
NativeVersionEnabled=true
ListenPort=5556
LogToStderr=true
SecureListener=false
LogCount=1
DomainRegistrationEnabled=false
StopScriptEnabled=true
QuitEnabled=false
LogAppend=true
StateCheckInterval=500
CrashRecoveryEnabled=false
StartScriptEnabled=true
LogFile=/u01/app/oracle/weblogic1036R2/wlserver_10.3/common/nodemanager/nodemanager.log
LogFormatter=weblogic.nodemanager.server.LogFormatter
ListenBacklog=50

 

Create the main wls.py script

import sys
def startAdmin():
    print 'Starting AdminServer'
    nmConnect(userConfigFile=nmUserFile, userKeyFile=nmKeyFile, host=nmHost, port=nmPort, domainName=domain, domainDir=domainPath, nmType=nmType)
    nmStart('AdminServer')
    nmDisconnect()
    return
def stopAdmin():
    print 'Stopping AdminServer'
    connect(userConfigFile=wlsUserFile, userKeyFile=wlsKeyFile, url=adminUrl)
    shutdown('AdminServer', force='true')
    return

def startManaged(managed):
    print 'Starting ', managed
    connect(userConfigFile=wlsUserFile, userKeyFile=wlsKeyFile, url=adminUrl)
    start(managed)
    disconnect()
    return
def stopManaged(managed):
    print 'Stopping ', managed
    connect(userConfigFile=wlsUserFile, userKeyFile=wlsKeyFile, url=adminUrl)
    shutdown(managed, force='true')
    disconnect()
    return
if ((len(sys.argv) < 2) | (len(sys.argv) > 3)):
    print ' Wrong number of arguments'
elif (sys.argv[1] == 'startadmin'):
    startAdmin()
elif (sys.argv[1] == 'stopadmin'):
    stopAdmin()
elif (sys.argv[1] == 'start'):
    startManaged(sys.argv[2])
elif (sys.argv[1] == 'stop'):
    stopManaged(sys.argv[2])

Next is the startall.sh script

/u01/app/oracle/weblogic1036R2/wlserver_10.3/common/bin/wlst.sh -loadProperties /u01/app/oracle/weblogic1036R2/bootscripts/config.properties -skipWLSModuleScanning /u01/app/oracle/weblogic1036R2/bootscripts/wls.py startadmin
/u01/app/oracle/weblogic1036R2/wlserver_10.3/common/bin/wlst.sh -loadProperties /u01/app/oracle/weblogic1036R2/bootscripts/config.properties -skipWLSModuleScanning /u01/app/oracle/weblogic1036R2/bootscripts/wls.py start oam_server1

stopall.sh

/u01/app/oracle/weblogic1036R2/Oracle_IDM1/common/bin/wlst.sh -loadProperties /u01/app/oracle/weblogic1036R2/bootscripts/config.properties -skipWLSModuleScanning /u01/app/oracle/weblogic1036R2/bootscripts/wls.py stop oam_server1
/u01/app/oracle/weblogic1036R2/Oracle_IDM1/common/bin/wlst.sh -loadProperties /u01/app/oracle/weblogic1036R2/bootscripts/config.properties -skipWLSModuleScanning /u01/app/oracle/weblogic1036R2/bootscripts/wls.py stopadmin

 

config.properties

adminUrl=t3://10.128.14.181:7001
nmHost=oam1
nmPort=5556
nmUserFile=/u01/app/oracle/config/nmUserFile
nmKeyFile=/u01/app/oracle/config/nmKeyFile
nmType=plain
wlsUserFile=/u01/app/oracle/config/wlsUserFile
wlsKeyFile=/u01/app/oracle/config/wlsKeyFile
domain=OAM_domain
domainPath=/u01/app/oracle/weblogic1036R2/user_projects/domains/OAM_domain

 

Before running this command (deprecated in 12c, but still works in 12.1.3), you must source setDomainEnv.sh for the domain you are using.

Encrypt username and password (11g)

source /u01/app/oracle/weblogic1036R2/user_projects/domains/OAM_domain/bin/setDomainEnv.sh

Then run this command to create your encrypted User and Key files

java weblogic.Admin -username weblogic -userconfigfile /u01/app/oracle/config/nmUserFile -userkeyfile /u01/app/oracle/config/nmKeyFile STOREUSERCONFIG

Encrypt credentials for Weblogic

 java weblogic.Admin -username weblogic -userconfigfile /u01/app/oracle/config/wlsUserFile -userkeyfile /u01/app/oracle/config/wlsKeyFile STOREUSERCONFIG

 

Now create your init.d startup scripts

 

/etc/init.d/nodemanager

#!/bin/sh
#
# nodemanager Oracle Weblogic NodeManager service
#
# chkconfig:   345 85 15
# description: Oracle Weblogic NodeManager service
### BEGIN INIT INFO
# Provides: nodemanager
# Required-Start: $network $local_fs
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
# Short-Description: Oracle Weblogic NodeManager service.
# Description: Starts and stops Oracle Weblogic NodeManager.
### END INIT INFO
. /etc/rc.d/init.d/functions
# Your WLS home directory (where wlserver is)
export MW_HOME="/u01/app/oracle/weblogic1036R2"
export JAVA_HOME="/u01/app/oracle/jrockit-jdk"
DAEMON_USER="oracle"
PROCESS_STRING="^.*weblogic.NodeManager.*"
source $MW_HOME/wlserver_10.3/server/bin/setWLSEnv.sh > /dev/null
export NodeManagerHome="$WL_HOME/common/nodemanager"
NodeManagerLockFile="$NodeManagerHome/nodemanager.log.lck"
PROGRAM="/u01/app/oracle/weblogic1036R2/user_projects/domains/OAM_domain/bin/startNodeManager.sh"
SERVICE_NAME=`/bin/basename $0`
LOCKFILE="/var/lock/subsys/$SERVICE_NAME"
RETVAL=0
start() {
        OLDPID=`/usr/bin/pgrep -f $PROCESS_STRING`
        if [ ! -z "$OLDPID" ]; then
            echo "$SERVICE_NAME is already running (pid $OLDPID) !"
            exit
        fi
        echo -n $"Starting $SERVICE_NAME: "
        /bin/su $DAEMON_USER -c "$PROGRAM &"
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && touch $LOCKFILE
}
stop() {
        echo -n $"Stopping $SERVICE_NAME: "
        OLDPID=`/usr/bin/pgrep -f $PROCESS_STRING`
        if [ "$OLDPID" != "" ]; then
            /bin/kill -TERM $OLDPID
        else
            /bin/echo "$SERVICE_NAME is stopped"
        fi
        echo
        /bin/rm -f $NodeManagerLockFile
        [ $RETVAL -eq 0 ] && rm -f $LOCKFILE
}
restart() {
        stop
        sleep 10
        start
}
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart|force-reload|reload)
        restart
        ;;
  *)
        echo $"Usage: $0 {start|stop|restart}"
        exit 1
esac
exit $RETVAL

The weblogic scripts call the startall.sh when the server starts, and stopall.sh when the server stops.

/etc/init.d/weblogic

#!/bin/sh
#
# weblogic Oracle Weblogic start
#
# chkconfig: 345 85 15
# description: Oracle Weblogic service
### BEGIN INIT INFO
# Provides:
# Required-Start: $nodemanager
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
# Short-Description: Oracle Weblogic service.
# Description: Starts and stops Oracle Weblogic.
### END INIT INFO
 . /etc/rc.d/init.d/functions
# Your WLS home directory (where wlserver is)
export MW_HOME="/u01/app/oracle/weblogic1036R2"
export BOOT_HOME="$MW_HOME/bootscripts"
export JAVA_HOME="/u01/app/oracle/jrockit-jdk"
DAEMON_USER="oracle"
source $MW_HOME/wlserver_10.3/server/bin/setWLSEnv.sh > /dev/null
PROGRAM_START="$BOOT_HOME/startall.sh"
PROGRAM_STOP="$BOOT_HOME/stopall.sh"
SERVICE_NAME=`/bin/basename $0`
LOCKFILE="/var/lock/subsys/$SERVICE_NAME"
RETVAL=0
start() {
 echo -n $"Starting $SERVICE_NAME: "
 /bin/su $DAEMON_USER -c "$PROGRAM_START &" RETVAL=$?
 echo [ $RETVAL -eq 0 ] && touch $LOCKFILE
}
 stop() {
 echo -n $"Stopping $SERVICE_NAME: "
 /bin/su $DAEMON_USER -c "$PROGRAM_STOP &" RETVAL=$?
 [ $RETVAL -eq 0 ] && rm -f $LOCKFILE
 }
 restart() {
 stop
 sleep 10
 start
}
case "$1" in
 start)
        start
        ;;
 stop)
        stop
        ;;
 restart|force-reload|reload)
        restart
        ;;
 *)
        echo $"Usage: $0 {start|stop|restart}"
esac
exit 1

 

Both the nodemanager and weblogic startup scripts need to made runable (chmod 755) and then added to chkconfig

chkconfig --add weblogic
chkconfig --add nodemanager

Update your Nodemanager type to be “Plain”

image2015-6-24 7-54-27

This can be done for each domain on your server

Well Done! Grab a beer

 

Jun 09

dnsmasq split dns trick!

check the content of the file /etc/sysconfig/network

Make sure you have in here what the external dns name is.

HOSTNAME=mail.johnson.com

This line SHOULD be in accordance of the /etc/hosts file. If your server has an ip address like 192.168.4.1 then your /etc/hosts file should look like

127.0.0.1 localhost.localdomain localhost
192.168.0.19 mail.johnson.com mail

Install DNSMASQ

yum -y install dnsmasq

modify the following line in /etc/dnsmasq.conf

mx-host=johnson.com,mail.johnson.com,50

modify the /etc/resolv.conf as follows:

nameserver 127.0.0.1
nameserver 8.8.8.8

 

restart dnsmasq

/etc/init.d/dnsmasq restart

check your work

dig johnson.com mx