How to Update the glibc (GNU libc) in CentOS / Red Hat

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Updating glibc on Red Hat Linux or CentOS Linux is a very simple process. Most commonly you will use the following command in the case of a security vulnerability, or perhaps just to verify that you’re running the most up-to-date library:

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How to Check the glibc Version on CentOS

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  • These instructions are intended specifically for checking the installed version of glibc.
  • I’ll be working from a Liquid Web Core Managed CentOS 6 and CentOS 7 server, and I’ll be logged in as root.

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How to Install OQGRAPH for MariaDB 10.0 on CentOS 6

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MariaDB is a drop-in replacement for MySQL. It is easy to install, offers many speed and performance improvements, and is easy to integrate into most MySQL deployments. Answers for compatibility questions can be found at MariaDB versus MySQL – Compatibility. MariaDB offers more storage engines than MySQL, including Cassandra (NoSQL), XtraDB (drop-in replacement for InnoDB), and OQGRAPH.

PreFlight Check
  • These instructions are intended for installing the Open Query Graph engine (OQGRAPH) for MariaDB 10.0 on CentOS 6.
  • I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
  • Your server should already have MariaDB 10.0 installed. If you’re working from MySQL 5.1 or MariaDB 5.5, visit our tutorial on How to Upgrade MySQL 5.1 to MariaDB 10.0 on CentOS 6

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How to Install the Cassandra Storage Engine on CentOS 6

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MariaDB is a drop-in replacement for MySQL. It is easy to install, offers many speed and performance improvements, and is easy to integrate into most MySQL deployments. Answers for compatibility questions can be found at: MariaDB versus MySQL – Compatibility. MariaDB offers more storage engines than MySQL, including Cassandra (NoSQL), XtraDB (drop-in replacement for InnoDB), and OQGRAPH.

Preflight Check
  • These instructions are intended for installing the Cassandra Storage Engine for MariaDB 10.0 on CentOS 6.
  • I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
  • Your server should already have MariaDB 10.0 installed. If you’re working from MySQL 5.1 or MariaDB 5.5, visit our tutorial on: How to Upgrade MySQL 5.1 to MariaDB 10.0 on CentOS 6

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How to Upgrade MySQL 5.1 to MariaDB 10.0 on CentOS 6

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MariaDB is a drop-in replacement for MySQL. It is easy to install, offers many speed and performance improvements, and is easy to integrate into most MySQL deployments. Answers for compatibility questions can be found at: MariaDB versus MySQL – Compatibility. MariaDB offers more storage engines than MySQL, including Cassandra (NoSQL), XtraDB (drop-in replacement for InnoDB), and OQGRAPH.

Preflight Check
  • These instructions are intended for upgrading from MySQL 5.1 to MariaDB 10.0 on CentOS 6.
  • I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.

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How To Install MariaDB 5.5 on CentOS 6

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MariaDB is a drop-in replacement for MySQL. It is easy to install, offers many speed and performance improvements, easy to integrate into most MySQL deployments. Answers for compatibility questions can be found at: MariaDB versus MySQL – Compatibility. MariaDB offers more storage than MySQL, including Cassandra (NoSQL), XtraDB (drop-in replacement for InnoDB), and OQGRAPH.

Pre-Flight Check
  • These instructions are intended for installing MariaDB on a single CentOS 6 node.
  • I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.

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Cassandra Failed to connect Error: [SOLVED]

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  • These instructions are intended specifically for solving the error: Failed to connect to ‘127.0.0.1:7199’: Connection refused.
  • I’ll be working from both Liquid Web Core Managed CentOS 6 and CentOS 7 servers, and I’ll be logged in as root.

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chkconfig Command Examples for Red Hat and CentOS

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chkconfig is a command for checking and updating runlevel information for system services. For a primer on runlevels, check out our tutorial: Linux Runlevels Explained.

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  • These instructions are intended specifically for checking and updating chkconfig.
  • I’ll be working from both a Liquid Web Core Managed CentOS 7 server, and I’ll be logged in as root.

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How to Install lsyncd on CentOS 6

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lsyncd is an rsync-based tool that monitors specified directories (including subdirectories) for updates and modifications, then syncs those changes to a specified destination.

Pre-Flight Check
  • These instructions are intended specifically for installing the lsyncd on CentOS 6.
  • I’ll be working from a Liquid Web Core Managed CentOS 6 server, and I’ll be logged in as root.

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