Linux check list

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Install tools for operation.

yum install nano wget epel-release

Update

If you update some packages, your config files override with new ones. You can find old files with rpm extension in same directory.

Latest Packages

Some linux distributions update their package with delay. IUS is good option for using latest package. You can get IUS package list here and install them with below command.

Install ius rpm package first:

yum install https://centos7.iuscommunity.org/ius-release.rpm

Use u suffix for Installing package from ius repo. For example use below for installing git 2.x:

yum install git2u

Postgres

Download rpm package, check this list for other versions.
wget https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-7-x86_64/pgdg-centos96-9.6-3.noarch.rpm
Install package.
rpm -i pgdg-centos96-9.6-3.noarch.rpm
yum install postgresql96-server postgresql96-contrib
/usr/pgsql-9.6/bin/postgresql96-setup initdb

Create db and user.

su postgres
createuser --interactive
createdb -O myuser mydb

Run psql for setting password to new user.

psql
ALTER USER mydbuser WITH PASSWORD 'mynewpass';
\q

Proxy

If you need proxy you can use nginx. You need give permission to nginx for accessing http resources.

setsebool httpd_can_network_connect true -P

Check nginx.log with

tail -10f /var/log/nginx/error.log

php & php-fpm

Use IUS for latest release, php72u.

Permissions overwritten after update, check /var/lib/php/fpm permissions.

Java

JRE

wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/jre-8u181-linux-x64.rpm"
yum localinstall jre-8u181-linux-x64.rpm

JDK

wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/jdk-8u181-linux-x64.rpm"

Firewall

firewalld

My React Native notes

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Start emulator from CLI:

cd $ANDROID_HOME/tools
emulator -list-avds
emulator -avd KitKat

Start project for android:

react-native run-android

 

LC_CTYPE: cannot change locale (UTF-8)

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When connect to centos machine with ssh, you can get below warning.

-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory

You need to set environment variable for encoding. Add below lines to /etc/environment file.

 

LANG=en_US.utf-8
LC_ALL=en_US.utf-8

Source: https://gist.github.com/ibrahimlawal/bfec7092cb64d46d8f9d1fd2c0c3d9c8

My hybris development environment test

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I am using my company mac pro 2015 for a lot of thing. So I need different environment look like C#, hybris, ABAP, etc. These environment needs service look like db. These service using my ram always. So I am using VM for environment which are not used often. I created VM for new hybris versions for testing (docker cannot pause / resume systems yet). I try some scenarios for my best hybris development environment.

VM: OS version Centos 7, Java 8 u162, MySQL 5.7.21 and hybris version 6.6.

Enviroment Compile time (ant clean all)
Hybris files in host shared with guest vm 21 minutes 9 seconds
Hybris files in guest vm 3 minutes 8 seconds
2 minutes 29 seconds
Hybris files in guest vm and shared with host (without nfs optimization)  5 minutes 44 seconds

 

Creating history for item

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If you want create history for item look like backoffice, you can use below example.

public void updateConsignmentStatus(String userUid, ConsignmentModel consignment, ConsignmentStatus status) {
  Map<string, object=""> originals = new HashMap();
  originals.put(ConsignmentModel.STATUS, consignment.getStatus());

  consignment.setStatus(status);

  Map<string, object> news = new HashMap();
  news.put(ConsignmentModel.STATUS, consignment.getStatus());

  final SavedValues savedValues = JaloConnection.getInstance().logItemModification(consignment.getPk(), news, originals, false);
  savedValues.setUser(UserManager.getInstance().getUserByLogin(userUid));
  modelService.saveAll();
}

Creating,updating or deleting other items in interceptor

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public class MyCustomerPrepareInterceptor implements PrepareInterceptor {
private static final Logger LOG = Logger.getLogger(MyCustomerPrepareInterceptor.class);

@Override
public void onPrepare(CustomerModel customerModel, InterceptorContext interceptorContext) throws InterceptorException {
  . . .
  final MyItemModel myItem = 
  interceptorContext.getModelService().create(MyItemModel.class);
  interceptorContext.registerElement(myItem);
  //interceptorContext.registerElementFor(myItem, PersistenceOperation.DELETE);
  . . .
}

DB connection for DDL in groovy

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DANGER!!!

In hybris hac, you cannot run DDL (data definition language) commands. You need unprotected connection to db. You can use below groovy example. Attention: DDL commands are dangerous!!!

import java.util.List;
import javax.sql.DataSource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

def config = spring.getBean("configurationService").getConfiguration();

DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(config.getString("db.driver"));
dataSource.setUrl(config.getString("db.url"));
dataSource.setUsername(config.getString("db.username"));
dataSource.setPassword(config.getString("db.password"));
JdbcTemplate jdbc = new JdbcTemplate(dataSource)
jdbc.execute("ALTER TABLE MYTABLE ALTER (P_MYFIELD BIGINT)");

Using separate file for different class logging

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Below example logging flexiblesearch class to separate file with time based trigger policy. Also we can add rollover strategy for removing old files.

log4j2.appender.FlexlogAppender.type=RollingFile log4j2.appender.FlexlogAppender.name=FlexlogAppender
log4j2.appender.FlexlogAppender.fileName=${HYBRIS_LOG_DIR}/Flexlog.log
log4j2.appender.FlexlogAppender.filePattern=${HYBRIS_LOG_DIR}/Flexlog.log-%d{yyyy-MM-dd}.log
log4j2.appender.FlexlogAppender.ImmediateFlush=true log4j2.appender.FlexlogAppender.layout.type=PatternLayout
log4j2.appender.FlexlogAppender.layout.pattern=%m%n log4j2.appender.FlexlogAppender.policies.type = Policies
log4j2.appender.FlexlogAppender.policies.time.type = TimeBasedTriggeringPolicy log4j2.appender.FlexlogAppender.policies.time.interval = 1000000
log4j2.appender.FlexlogAppender.policies.time.modulate = true log4j2.logger.flexible.name = de.hybris.platform.jalo.flexiblesearch
log4j2.logger.flexible.level = DEBUG log4j2.logger.flexible.appenderRef.stdout.ref = FlexlogAppender log4j2.logger.flexible.additivity = false

Installing SAP Netware ABAP 7.51 SP02 on CentOS 7 Minimal

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You can find great documentation for installing SAP Netware ABAP 7.51 SP02 at Julie blog post. I didn’t use shared OS because of huge disk/ram usage.

Prerequest

Install your favorite text editor

Install nano, vim, etc with yum.

yum install nano
Enable ssh for root

You can open multiple terminal and make copy paste with ssh to your server.

nano /etc/ssh/sshd_config

Remove # for uncomment line “PermitRootLogin yes” or add it if missing.

service sshd restart
Disable firewall

You need to open a lot of port for SAP Netware in firewall. You can disable firewall instead of configuring it.

service firewalld stop
systemctl disable firewalld
Install uuidd package

SAP Netware using uuidd library for generating GUID, install it.

yum install uuidd

Install sch package

SAP Netware using sch command in installation step, install it.

yum install tcsh
Install vmware tools and shared folder

Install open-vm-tools.

yum install open-vm-tools

You can find vmware tools in VMWare Virtual Machine menu as Install VMware Tools. Then you can check /mnt folder for CD which including tools. Copy it to your temp.

cp VMwareTools-10.x.tar.gz /tmp
tar -zxvf VMwareTools-10.x.tar.gz

Install python for tools installer.

yum install python

Change directory to extracted folder then run tools installer.

phyton install vmware-install.pl

Installation

Start installation script with below arguments.

./install.sh -g -s