AWS Storage aka S3 Overview

AWS S3 S3 – Object based storage (Photos,videos e.g) 0- 5TB file size unlimited storage Files are stored in buckets – (equivalent to folder) S3 is universal namespace, i.e names are unique https://s3-us-west.amazonaws.com/anujtomar -Key – name of object -value – data -version id -metadata -subresources – ACL Torrent S3 – 99.99 availability, 99.99999999999 % durability, ...

AWS Glossary

A short explanation of common AWS Terms: Route53 – DNS service of AWS – PS : 53 is default Domain Name System/Standard port hence the name Route53 Cloud Front: Cahcing the files part of CDN Direct Connect: Connecting ur physcial datacenter to AWS. EC2 – Elastic Compute Cloud VMs which run the services EC2 Container ...

Take remote GUI of Solaris or Linux Machine with Free and Open Source xMing

Take remote GUI of Solaris or Linux Machine with Free and Open Source xMing
This is a frequent requirement when you want to run some program which has a GUI on remote Linux machine , you will get an error because it can’t display the GUI window on your ssh terminal

Redirection in Unix/Linux

Redirection is a very important concept in Unix, it is quite helpful when you setup cron or schedule the scripts, it helps you in redirection output from std device like screen to some file which can be beneficial if script is running in the background without user interference. Any person can later check the output ...

Weblogic Certificate Renewal for existing or new certs with commands

Below are commands to renew an existing or create a new certificate request. Weblogic Cert Commands: 1 - List the keys: keytool -list -v -keystore identity.jks -storepass password 2 - Generate a new Key Pair & Java Keystore: keytool -genkey -alias mydomain -keyalg RSA -keystore keystore.jks -keysize 2048 OR 2 - Generate CSR for existing ...

Finding High mount point greater than threshold in single command

You can use below command to find a mount point whose usage is greater than threshold value Example below we have 1st filed as mount point name, & 4th field is used percent, df -k Filesystem 1024-blocks Free %Used Iused %Iused Mounted on /dev/hd4 131072 6624 95% 6871 75% / /dev/hd2 2195456 135588 94% 47519 ...

Checking SSL/TLS connectivity via openssl to verify Poodle Fix

You can use below commands to check on which protocols a particular website responds: Recommended practice is to use only TLS1_1 & TLS1_2 as the enabled protocols on your web/app server. As SSL3 & TLS1 are not that secure now due to various uncovered vulnerabilities. openssl s_client -connect : -<ssl3|ssl2|tls1|tls1_1|tls1_2> openssl s_client -connect localhost:8080 -ssl2 ...

Apache installation & integration with Weblogic on Linux

I. Download from : http://httpd.apache.org/download.cgi II. Install the apache web server in Linux: Step 1: first unzip the file on zip file gunzip httpd-2.0.55.gzStep 2: tar file is open. Untar that filetar –xvf httpd-2.o.55.tarThe file will display httpd-2.o.55Step 3: cd httpd-2.0.55./configure —prefix= \home\Apache2.2\Apachemakemake installThe install is completed.III. Check Apache servers running processes:ps -ef | grephttpd ...

Running Middleware apps with non-root user on privileged ports < 1024 on Solaris

In Solaris 9 and above, non root users can open ports < 1024 with the below command: # su – # /usr/sbin/usermod -K defaultpriv=basic,net_privaddr <userId> Also this needs to be run once by root user, after this user will be able to bind to any available port & there will be no restriction

Heartbleed Bug affecting Weblogic websphere apache & other middleware application / web servers ?

So we all are hearing various news about Heartbleed Bug, so let’s see which of our middleware application servers are affected by this: Here is an brief review of the Bug -CVE-2014-0160: “OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error in the TLS/DTLS heartbeat functionality. An attacker could exploit ...