gbraccialli

hadoop fs -rm -r -f /tmp/test_snapshot

hadoop fs -mkdir /tmp/test_snapshot

hadoop fs -put x.txt /tmp/test_snapshot

hadoop fsck /tmp/test_snapshot/ -files -blocks -locations -includeSnapshots

(execute as hdfs user)
hdfs dfsadmin -allowSnapshot /tmp/test_snapshot/

gbraccialli

export KAFKA_OPTS="-Djava.net.preferIPv4Stack=true -Dsun.security.krb5.debug=true"

gbraccialli

host1 - server:
netcat -v -l -n 2000 >/dev/null

host2 - client:
dd if=/dev/zero bs=100M count=10 | netcat -v suse-ambari.cloud.hortonworks.com 2000

gbraccialli

#validate keytabs
for keytab in `ls /etc/security/keytabs/*.keytab`; do principal=`klist -k $keytab | tail -1 | awk '{print $2}'`;kinit -kt $keytab $principal;rt=$?;listprincipal=`klist | grep Default`;kdestroy;echo "status = $rt - keytab = $keytab - principal = $principal"; done 2>/dev/nul

gbraccialli

/usr/jdk64/jdk1.8.0_60/bin/java -cp /usr/share/java/mysql-connector-java.jar:/usr/hdp/current/ranger-admin/jisql/lib/* org.apache.util.sql.Jisql -driver mysqlconj -cstring jdbc:mysql://sles11-full-security-m1.cloud.hortonworks.com/DBNAME -u 'USERNAME' -p 'PASSWORD' -noheader -trim -c \; -query "SELECT version();"

gbraccialli

for fieldA in A B C D E F G H
do
   for fieldB in O P Q R S T U V W X Y Z
   do
       for i in {1..100000}
       do
          echo $fieldA,$fieldB,$i,$RANDOM
       done
   done
done

gbraccialli

import sys, os, stat

zones_hosts = {}
open_zones = {}
incomings = {}

zones_hosts_file = sys.argv[1]
open_zones_file =  sys.argv[2]
rules_file = sys.argv[3]
dir_output = "deploy/"

gbraccialli

import sys, os, stat

zones_hosts = {}
open_zones = {}
servers = {}
clients = {}

zones_hosts_file = sys.argv[1]
rules_file = sys.argv[2]
dir_output = "deploy/"

gbraccialli

sample search filters:
(&(objectClass=group)(cn=*HADOOP*))
(|(memberof=CN=GROUP1,OU=XXXX,OU=YYY,DC=domain,DC=com)(memberof=CN=GROUP2,OU=XXXX,OU=YYY,DC=domain,DC=com)(sAMAccountName=username1))
((CN=GROUP1,OU=XXXX,OU=YYY,DC=domain,DC=com)(CN=GROUP2,OU=XXXX,OU=YYY,DC=domain,DC=com))


ldapsearch -x -h yourldapserver.com -b cn=accounts,dc=domain,dc=com -s sub "YOUR-SEARCH-FILTER"	

gbraccialli

mkdir aux
#cp your jar to aux 
cd aux
jar xf file_original.jar
rm file_original.jar
#do your stuff
#...
jar cvf file_new.jar .

#check new file content