Install WSO2 Identity Server 5.7.0 on Centos 7 x64

Pre-requisites:
OpenJDK8 or Oracle JDK 1.8.*

Steps:
1. Download WSO2 Identity Server from WSO2 Website:

https://wso2.com/identity-and-access-management/install/

2. Install WSO2 Identity Server

rpm -i wso2is-linux-installer-x64-5.7.0.rpm

3. Download and install Apache Tomcat version 8 or above
I installed Apache Tomcat 9 which I downloaded from Apache Tomcat 9 Core Download (tar.gz)

tar xvf apache-tomcat-9.0.14.tar.gz

4. Download and install curl
I installed it using yum

yum -y install curl

5. Create a Twitter application to try out multi-factor or federated authentication
a. Go to https://twitter.com/ and create an account
b. Register for Twitter Developer account

I applied for it on 31 Jan 2019 6.00pm GMT+8.  Will update here when it is approved).

Update: My Twitter Developer Account was approved 1 Feb 2019 11.43pm GMT+8.  Twitter first responded asking for more info on 31 Jan 2019 10.24pm GMT+8 but I didn't notice the email and only replied back on 1 Feb 2019 11.25pm GMT+8.  So, it's either I was very lucky to have gotten a very fast response or Twitter is super efficient in handling these developer accounts application because I think there would be like thousands of application per day from all over the world everyday!  Anyway, thanks to Twitter for approving my developer account.)

c. Register a new application on Twitter at https://apps.twitter.com You can use the following url as the Callback URL for your Twitter application: https://localhost:9443/commonauth

d. Note down API key and secret for later use.

6. Open the /etc/hosts file and add the following entry
127.0.0.1     localhost.com

7. Start WSO2 IS

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/
export WSO2IS_HOME=/usr/lib64/wso2/wso2is/5.7.0/

cd $WSO2IS_HOME/bin
sudo ./wso2server.sh

8. Open firewall port if firewalld is active in Centos 7

firewall-cmd --permanent --add-port=9443/tcp
firewall-cmd --list-ports

List the services that are accepted through the firewall:
firewall-cmd --list-services

Install TeamViewer on Centos7

1. Get the RPM Package

    wget https://download.teamviewer.com/download/linux/teamviewer-host.x86_64.rpm

2.  Install EPEL Repository

    sudo yum -y install epel-release

3. Install TeamViewer

    sudo yum -y install ./teamviewer-host*.rpm

That's all folks!  3 steps only.

Fyi, I referred to https://community.teamviewer.com/t5/Knowledge-Base/How-to-install-TeamViewer-on-Red-Hat-and-CentOS/ta-p/30708 for this.

Install FileZilla FTP Client on Centos7

1. Enable EPEL Repository

    sudo yum -y install epel-release

2. Install FileZilla

    sudo yum -y install filezilla


That's all folks.  2 steps only.

Fyi, i referred to http://sysadmindata.com/install-filezilla-centos-7/ for this.

Install Google Chrome on Centos7

1. Enable Yum Repository

    sudo vi /etc/yum.repos.d/google-chrome.repo

    Add the following:

    [google-chrome]
    name=google-chrome
    baseurl=http://dl.google.com/linux/chrome/rpm/stable/x86_64
    enabled=1
    gpgcheck=1
    gpgkey=https://dl.google.com/linux/linux_signing_key.pub

2. Install Google Chrome

    sudo yum install google-chrome-stable

That's all folks.  2 steps only.

Fyi, I referred to https://www.cyberciti.biz/faq/howto-install-google-chrome-on-redhat-rhel-fedora-centos-linux/ for this.

Installing Visual Studio Code on Centos7

1. Enable Yum Repository

     sudo vi /etc/yum.repos.d/vscode.repo

     Add the below:

     [vscode]
     name=Visual Studio Code
     baseurl=https://packages.microsoft.com/yumrepos/vscode
     enabled=1
     gpgcheck=1
     gpgkey=https://packages.microsoft.com/keys/microsoft.asc

2. Import the package signing GPG key

     sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc 

3. Install Visual Studio Code


     sudo yum check-update
     sudo yum install code


That's all folks! 3 steps only.


Fyi, I referred to https://tecadmin.net/install-visual-studio-code-editor-in-fedora/ for this.

My To Read List:

Java JWT Token Tutorial using JJWT Library

Over a quarter of employees don't know company protocol for sharing business info

Enterprise is dead, long live Agile!

Building Docker Intuition

SEI CERT releases open-source Source Code Analysis Laboratory for pinpointing vulnerabilities

Architecture with Docker for Two-tier Application

MVVM in Flutter using ScopedModel

SSO for your Single Page Application (part 1/2 — AngularJS)

https://stackoverflow.com/questions/8176001/trouble-creating-active-directory-users-with-java

https://www.youtube.com/watch?v=qs2n_poLarc

Drop database and then restore (Postgresql 10.4.0):

1. su as postgres

2. run psql at command prompt

3. First, find the activities that are taken place against the target database, you can query the pg_stat_activity view with the following query:

SELECT
 *
FROM
 pg_stat_activity
WHERE
 datname = 'target_database';

4. Second, terminate the active connections by issuing the following query:

SELECT
 pg_terminate_backend (pg_stat_activity.pid)
FROM
 pg_stat_activity
WHERE
 pg_stat_activity.datname = 'target_database';

5. Third, execute the DROP DATABASE statement:

DROP DATABASE target_database;

6. Create database:

CREATE DATABASE target_database;

7. Copy file from host to docker container:

docker cp src/. mycontainer:/target

8. Go into docker container and restore database:

docker container exec -it mycontainer bash
su postgres
psql target_database < infile

That's all folks!

After Jenkins successfully shutdown, my Gitlab CE is now using port 8080 so I need to shut it down also to make way for my WildFly Application Server.  Command issued to shutdown Gitlab CE are as follows:

1.  su as root

2. At command prompt: gitlab-ctl stop

Referred from here: https://docs.gitlab.com/omnibus/maintenance/

That's all folks!

My Jenkins Server automatically starts upon Centos 7 server starts, so I need to stop it to make way for my WildFly Application Server.  What I did to stop it are as follows:

1. On my Firefox browser, go to this url : http://localhost:8080/exit

2. It will ask me to login then i have to click some button to initiate the shutdown process

I saw someone also asking about the same thing at stackoverflow: https://stackoverflow.com/questions/10238604/how-to-shutdown-my-jenkins-safely/35922474

It's that easy folks!

Install PgAdmin4 on Centos 7

Install PgAdmin4 on Centos7

PgAdmin4 is GUI Tool to manage PostgreSQL database.  I have a problem installing the latest PgAdmin4 which is v3.2 in Windows 10 on my HP EliteBook x360 so I made the decision to install it on my VMware Virtualised Centos 7 server.
This is what I did to install PgAdmin4 on Centos 7:

1. Get the yum repository installed on my server

• Get the yum repo rpm
  
  wget -v https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-7-x86_64/pgdg-centos96-9.6-3.noarch.rpm
  
  Get the rpm location from https://yum.postgresql.org/repopackages.php

• Install the yum repo
  
  sudo rpm -ivh pgdg-centos96-9.6-3.noarch.rpm

• Install PgAdmin4
  
  sudo yum -y install pgadmin4

• Configure PgAdmin4
  
  cd /usr/pgadmin4/bin/
  
  su
  
  
  ./pgadmin4-web-setup.sh
  
  
  NOTE: Configuring authentication for SERVER mode.
  Enter the email address and password to use for the initial pgAdmin user account: Email address: edyzairani@gmail.com
  Password:
  Retype password:
  pgAdmin 4 - Application Initialisation
  ====================================== We can now configure the Apache Web server for you. This will create the pgAdmin4 conf file under /etc/httpd/conf.d/. Do you wish to continue?
  1) Yes
  2) No
  #? 1 pgAdmin4 Apache config file is created as /etc/httpd/conf.d/pgadmin4.conf
  Apache web server is not running. We can start the web server for you to finish pgAdmin4 installation. Would you like to continue?
  1) Yes
  2) No
  #? 1
  Apache successfully started. You can now start using pgAdmin4 in web mode

2. Install PgAdmin4 Desktop Gnome

    sudo yum -y install pgadmin4-desktop-gnome

That's all folks.
Fyi, I referred to https://people.planetpostgresql.org/devrim/index.php?/archives/96-Installing-pgAdmin4-3.X-on-RHEL-CentOS-7-and-Fedora-27.html for this.

Folate Recommended Daily Intake

Folate is a B vitamin that is naturally present in many foods. Folic acid is a synthetic form of folate and can be found in many supplements and fortified foods. Folate is important for the formation of new blood cells and the production of DNA and RNA, genetic materials in your body. Because of its role in red blood cell formation, folate helps prevent fatigue and anemia in your body. According to the Linus Pauling Institute, the recommended daily intake of folate for adults is 400 mcg.

Read more: http://www.livestrong.com/article/342051-a-list-of-foods-containing-folate/#ixzz2Gxk2Ax8Z


Folate needs increase with age, and pregnant and breastfeeding women need more folate than other adults. Pregnant women should get 600 mcg of folate per day, and breastfeeding women 500 mcg per day, according to the National Institutes of Health Office of Dietary Supplements. Adolescents and adults ages 14 and over need 400 mcg of folate per day, while children ages 9 to 13 need only 300 mcg per day and children ages 4 to 8 need 200 mcg per day. Children ages 1 to 3 should get 150 mcg of folate per day.

Read more: http://www.livestrong.com/article/484257-peanut-butter-folic-acid/#ixzz2GxjSRYYW


If you take more than 1,000 mcg of folic acid in the form of vitamins and supplements, you could be at risk for vitamin B-12 deficiency, which can trigger anemia and eventually damage your nerves. Older adults are at higher risk of vitamin B-12 deficiency due to age and should check with their physicians before beginning a folic acid supplement or a daily vitamin with excess folic acid. If you take anti-seizure medications, you could be at risk of having seizures if you take too much folic acid.

Read more: http://www.livestrong.com/article/402494-what-are-the-results-of-too-much-folic-acid/#ixzz2GxkmBVnC