[Keycloak] Keycloak Docker 실행 OR Install

• https://www.keycloak.org/docs/latest/server_installation/

System Requirements

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These are the requirements to run the Keycloak authentication server:

• Can run on any operating system that runs Java
• Java 8 JDK
• zip or gzip and tar
• At least 512M of RAM
• At least 1G of diskspace
• A shared external database like PostgreSQL, MySQL, Oracle, etc. Keycloak requires an external shared database if you want to run in a cluster. Please see the database configuration section of this guide for more information.
• Network multicast support on your machine if you want to run in a cluster. Keycloak can be clustered without multicast, but this requires a bunch of configuration changes. Please see the clustering section of this guide for more information.
• On Linux, it is recommended to use /dev/urandom as a source of random data to prevent Keycloak hanging due to lack of available entropy, unless /dev/random usage is mandated by your security policy. To achieve that on Oracle JDK 8 and OpenJDK 8, set the java.security.egd system property on startup to file:/dev/urandom.

1. centos7 pull

    docker pull centos:centos7

2. JDK Download

   #yum upgrade
   yum -y upgrade
   
   yum -y install wget
   
   #JDK 11 download
   wget http://cdn.azul.com/zulu/bin/zulu11.39.15-ca-jdk11.0.7-linux_x64.tar.gz
   
   tar -zxvf zulu11.39.15-ca-jdk11.0.7-linux_x64.tar.gz
   mkdir /usr/local/java
   mv /usr/local/src/zulu11.39.15-ca-jdk11.0.7-linux_x64.tar.gz /usr/local/java

3. JAVA_HOME 설정

   vi ~/.bash_profile
   
   #아래의 설정 추가
   JAVA_HOME=/usr/local/java/zulu11.39.15-ca-jdk11.0.7-linux_x64
   PATH=$PATH:$JAVA_HOME/bin
   export PATH JAVA_HOME
   
   source ~/.bash_profile
   java -version

4. keycloak download

   wget --no-check-certificate https://downloads.jboss.org/keycloak/9.0.3/keycloak-9.0.3.zip

• unzip 설치

  #확인
  rpm -qa | grep unzip
  yum list unzip
  
  #설치
  yum install unzip

• keycloak unzip

  unzip keycloak-9.0.3.zip

  #설치경로
  /opt/keycloak-10.0.0