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Steps To Fixing Linux Crash Filesystem After Power Outage
Sometime if we didn’t properly shutdown a server that running linux, it will cause a crash for the filesystem. We need a tool that able to repair it immediately, the tool is FSCK or file system consistency check. Below is the fsck command : Usage: fsck [-sACVRTNP] [-t fs-optlist] [filesystem] [fs-specific-options] Example : I have…
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Install and Configure Collectd Monitoring on Linux
Introduction collectd collects the system and application performance metrics. It has hundreds of Plugins. The latest stable release of Collectd 5.9.2 released on 1st of October 2019 and licenced under MIT License & GNU General Public. We are going to install collected monitoring on Ubuntu 20.04 LTS. The below steps work well with Ubuntu 16.04…
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create-striped-logical-volume-on-linux
Striped Logical Volume in Logical volume management (LVM) In our Logical volume management series, In our first logical volume setup, we have gone through setting up a linear logical volume. Now we are about to start with how to set up Striped Logical Volumes. The linear logical volume will write the data to a single physical…
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live-resize-root-partition-on-linux-server
Step 1 Check your current partition size and drive by using df -h and fdisk -l /dev/sda command (assuming your drive is sda): As you can see, the root partition / and the drive total capacity are around 20GB. Step 2 Now you need to rescan your block device sda with the following command: $ echo 1 > /sys/block/sda/device/rescan And…
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Installing OpenStack with DevStack
OpenStack is open source software for building private and public clouds. There are several ways to install OpenStack. This guide will walk you through the installation of DevStack, which is a documented shell script to build complete OpenStack development environments. We will start with the installation of Ubuntu 12.04 (LTS). Make sure that you create…
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Disabling default security on CentOS
Everybody wants their stuff to be secure, until they actually try to use it. That’s the reason for this tidbit about disabling the default security on CentOS. SELinux is enabled by default on CentOS. To disable it, we need to edit /etc/selinux/config: SELINUX=disabled We need to reboot the machine for this to take effect. The…








