Jun 18, 2014

Loading of /usr/lib/erlang/lib/mnesia-4.11/ebin/mnesia.beam failed: badfile

I am working with rabbitmq , after the latest ubuntu 14.04 LTS update , i got this exception.


As result rabbit is not working.


I worked with 14 version of erlang .


Solution was to upgrade to the latest version of erlang.

Jun 5, 2014

log4j.properties

Sample log4j property file, logging only to file, if you want console add 'stdout' in the rootlogger and remove the comments in the section below.
I included hibernate and spring logging relevant

# Root logger option
log4j.rootLogger=INFO, file

log4j.category.com=WARN
log4j.category.org=WARN
log4j.category.com.softweave=DEBUG
log4j.category.org.springframework=INFO
#log4j.category.org.springframework.beans.factory=INFO
#log4j.category.org.springframework.beans.factory.support=INFO
log4j.category.org.apache.cxf.service.factory.ReflectionServiceFactoryBean=WARN
log4j.category.org.hibernate.hql.internal.ast.HqlSqlWalker=ERROR
log4j.category.org.hibernate.SQL=INFO

# To see hibernate parameters in the query and not just ? you must set this to TRACE
log4j.category.org.hibernate.type=INFO
log4j.category.org.hibernate.tool.hbm2ddl=INFO

# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=log_file_name_and_location.log
log4j.appender.file.MaxFileSize=10MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %5p %c{1}:%L - %m%n

# Direct log messages to stdout
#log4j.appender.stdout=org.apache.log4j.ConsoleAppender
#log4j.appender.stdout.Target=System.out
#log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
#log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - #%m%n

# spring transaction log
log4j.logger.org.springframework.orm.jpa=INFO
log4j.logger.org.springframework.transaction=INFO
#log4j.logger.org.springframework.orm.hibernate3.HibernateTransactionManager=DEBUG

# hibernate full details log
log4j.logger.org.hibernate=INFO
#log4j.logger.org.hibernate.type=trace

May 21, 2014

NoClassDefFoundError: jersey/repackaged/com/google/common/collect/Maps

Hi,

I am working with spring 4.0.4 and jersey 2.7 and Gradle 1.11 suddelny out of nowhere i build and deployed to my tomcat 7 (latest release) and got the above error.
Worked to figure out what went wrong about an hour.
Than i saw that they released a new 2.8 lately, decided to try it - it worked +


Problem solved for me after upgrading from jersey 2.7 to 2.8
and adding this to my gradle dependencies
"org.glassfish.jersey.bundles.repackaged:jersey-guava:2.8"



Hopefully it will help you too,

Dor

May 19, 2014

Create blocking connection with pika

Hi,

That what i did, watch that the port is not a string but integer parameter.

 pika.BlockingConnection(pika.ConnectionParameters(host='localhost',port=6672))



Dor

May 4, 2014

How to expose spring ehcache 2.8.2 to jmx

In this version ehcache statistics is enabled by default.

I am using ehcache as spring cache.

it's easy

find the place where you define your config
like 'net.sf.ehcache.config.Configuration config = new net.sf.ehcache.config.Configuration()'

in my case i use annotations therefore i got this line in the code, in your case, maybe defined as bean inside the xml .

add the following :
      'config.setMonitoring(net.sf.ehcache.config.Configuration.Monitoring.ON.name());'

Yeah i wondered too why it's not possible to give the enum only .. maybe in the next version... '

Worked for me .
Dor

Apr 10, 2014

RabbitMQ 3.3.0 SSL

If you want the rabbitmq manager to work with ssl only put this in the rabbitmq.config

{rabbitmq_management,
  [{listener, [{port,     15672},
                  {ssl,      true},
                 {ssl_opts, [{cacertfile, "/home/me/testca/cacert.pem"},
                            {certfile,   "/home/me/testca/server/cert.pem"},
                              {keyfile,    "/home/me/testca/server/key.pem"},
                              {verify, verify_peer},
                              {fail_if_no_peer_cert, false }]}]}]},


Before doing so, you need to use the openssl to create the necessary certificates.
Beware to use the latest patch to the openssl that includes the bug fix for heartbeat bug.
Where ? you can read here, it's one possible example.


Apr 2, 2014

Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_main_binary-amd64_Packages

I am using Ubuntu 12.04 LTS 64bit , Must say that i am having a lot of error issues.

Got this error above when i tried to update.

This solved that :

sudo rm -vf /var/lib/apt/lists/*