ELK Stack – Upgrade from 2.x to 5.x

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Elasticsearch Snapshot and Restore https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-snapshots.html   Elasticsearch Migration Helper Plugin cd /usr/share/elasticsearch/ ./bin/plugin install https://github.com/elastic/elasticsearch-migration/releases/download/v2.0.4/elasticsearch-migration-2.0.4.zip you may get updated command from here -> Elasticsearch Migration Plugin Install You may download plugin from...

top command on multi core processor

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top command shows CPU usage as a percentage of a single CPU by default. That's why you can have percentages that are >100. On a...

How to run your own email server with your own domain

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E-mail is old and complex. It's the oldest still-recognizable component of the Internet, with its modern incarnation having coalesced out of several different decades-old...
mysql update

MySQL Update – MySQL Upgrade

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MySQL update process some times create issues like, MySQL server doesn't start. when you perform MySQL update using yum update or yum update mysql or yum update mysql-server before restarting or...

NFS Server and client configuration Centos

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NFS Server side configuration Create directory which you want to share mkdir -p /nfsshare yum install nfs-utils rpcbind nfs-utils-lib chkconfig rpcbind on chkconfig nfs on chkconfig nfslock on service rpcbind start service...
mysql update

Reasons to Stick with MySQL

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MySQL’s founder is encouraging people to steer away from his creation. Here’s why he’s wrong. Schism between the worlds of open source and proprietary software...

Web Server Performance Tuning

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First off, Apache, nginx, or LightSpeed aside - if you're running a server with 1000-2000 requests/second it's time to start thinking about dual servers...

KVM Installation on CentOS 6

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KVM and CentOS 6 CentOS 6 has native availability of KVM virtualization support and tools in the base distribution.  See the meta packages contained in: # yum...

Distributed Storage Systems

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http://basho.com/products/riak-s2/

How to setup network after RHEL/CentOS 7 minimal installation

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After installing RHEL/CentOS 7 minimal, You may not able to connect network in that machine. This will happen because Ethernet interfaces are not enabled...