Best Practices to run Nodejs

The safe user does not have permissions to use default http port 80. Do not run your applications as a root. To use http port for non root user, use the below sudo apt-get install libcap2-bin  sudo setcap cap_net_bind_service=+ep `readlink -f \`which node\`` Now you can able access default http port.   for nodejs node app.js production: pm2 start app.js forever start app.js     instead...

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sudo -u keycloak ./jboss-cli.sh 'embed-server,/subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=proxy-address-forwarding,value=true)'Cannot start embedded server: Failed to instantiate class "org.jboss.logmanager.handlers.PeriodicRotatingFileHandler" for handler "FILE": java.lang.reflect.InvocationTargetException: /opt/keycloak-3.4.3.Final/standalone/log/server.log...

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https required keycloak

Keycloak admin login page not showing without https . Disable https in the dashboard, but without logging in, we cannot disable. So use the below commands go to bin folder of keycloak. ./kcadm.sh config credentials --server http://localhost:8080/auth --realm master --user admin ./kcadm.sh update realms/realmname -s sslRequired=NON...

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https: Address already in use /0.0.0.0:8443

18:02:14,277 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service org.wildfly.undertow.listener.https: org.jboss.msc.service.StartException in service org.wildfly.undertow.listener.https: Address already in use /0.0.0.0:8443    at org.wildfly.extension.undertow//org.wildfly.extension.undertow.ListenerService.start(ListenerService.java:179)  ...

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PPK to Pem Conversion in Mac

PPK to PEM conversion in MACputtygen privatekey.ppk -O private-openssh -o privatekey.pe...

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No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

[INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 47.995 s [INFO] Finished at: 2018-04-11T12:51:26+00:00 [INFO] Final Memory: 210M/483M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project...

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php 5.5.9 Uncaught exception 'PusherException'

PHP Fatal error:  Uncaught exception 'PusherException' with message 'There is missing dependant extensions - please ensure both cURL and JSON modules are installe...

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Install Apache Tomcat latest stable version on Ubuntu

Step1: Update your apt-get package  apt-get update Step2: Install Java Developer kit sudo apt-get install default-jdk Step3: Install Java Developer kit apt-get install tomcat8 Step3: Install Java Developer kit apt-get install tomcat8 step4: Install Tomcat8 admin tools and documents apt-get install...

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Installing Apache Webserver on Ubuntu

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #000000; background-color: #ffffff} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; color: #34bc26; background-color: #ffffff} span.s1 {font-variant-ligatures: no-common-ligatures; color: #34bc26} span.s2 {font-variant-ligatures: no-common-ligatures} span.s3 {font-variant-ligatures: no-common-ligatures; color: #5230e1} span.s4...

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