08 February, 2019

Installing Gluster, 3 brick distributed, Centos 7

yum install centos-release-gluster yum install glusterfs-server Verify [[email protected] ~]# glusterfs –version glusterfs 3.12.9 Repository revision: git://git.gluster.org/glusterfs.git Copyright (c) 2006-2016 Red Hat, Inc. <https://www.gluster.org/> GlusterFS comes with ABSOLUTELY NO WARRANTY. It is licensed to you under your choice of the GNU Lesser General Public License, version 3 or any later version (LGPLv3 or later), or the […]

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06 February, 2019

Understanding ZFS : Checksum

Ever wondered what kind of checksum ZFS uses to check for bit rot ? Probably not, but it turns out you can change the used algorithm. However like most settings, the defaults are chosen by smart people. So changing it might not be doing you any favors. As it turns out, the default checksum used […]

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19 December, 2018

Install PHP 7 Stats on Centos 7

I installed PHP 7.1 through webtatic, except with Apache instead of Nginx, so not the -fpm.  Installing PHP stats package is easy, if you know how, so follow along. First we need to provide our system with a compiler, and the pear package which contains pecl (yum whatprovides pecl) yum install gcc php71w-pear After that you […]

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05 December, 2018

Change default kernel boot Centos 7

I installed a new kernel (kernel-ml, from mainline 4.18) to make sure on next boot it got selected this is what I had to do : (Since its headless and I won’t see grub when it boots) Install kernel mainline : yum install kernel-ml Find the current installed kernels : cat /boot/grub2/grub.cfg | grep ^menuentry | […]

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08 November, 2018

Rename a volume group on LVM

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