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Linux

Install Netdata on RHEL 7

In this tutorial, How to install Netdata on RHEL 7 / CENTOS 7. Netdata is performance and health monitoring for systems and applications. It is a monitoring agent you install on all your systems. Why use Netdata * High-resolution metrics * Monitors everything * Install and get results immediately * Requires zero dedicated resources * Open-source,

mtx -- a native linux media changer tool

media changer tool mtx is a native linux media changer tool, it controls SCSI media changer devices.The mtx command controls single or multi-drive SCSI media changers such as tape changers, autoloaders, tape libraries, or optical media jukeboxes. It can also be used with media changers that use the ’ATTACHED’

How to generate UUID for network interface on RHEL/CentOS

UUIDs (Universal Unique Identifier) for network interface card can be generated using the following command (CommandShell): uuidgen [device] Example ( CommandShell ): uuidgen eth0 Then you can add it to your NIC config file (assuming your interface is eth0) : /etc/sysconfig/network-scripts/ifcfg-eth0 Add/modify the following (NIC configuration file): UUID=[uuid]

Install RHEL8.X support Dell PERC6/6i and H700/H800 old megaraid_sas

參考網路上的分享文章 https://gainanov.pro/eng-blog/linux/rhel8-install-to-dell-raid/提到有網路位置分享RHEL8不支援的driver disk image ISO檔 https://elrepo.org/linux/dud/el8/x86_64/可以在光碟開機安裝選擇畫面下按下[Tab] key然後在最後輸入下列範例>vmlinuz installrd=initrd.img inst.dd=https://elrepo.org/linux/dud/el8/x86_64/dd-mpt3sas-28.100.00.00-2.el8_1.elrepo.is 在公司機房我把支援CentOS8.3/OEL8U3的 Boot ISO

CentOS8 網路校時 - chrony

在 CentOS 8 預設已經沒有 ntpdate 來做系統校時，建議改用 chrony 來完成系統校時的工作。chrony 是一個 NTP Client/Server 並存的套件，就看你怎麼設定 /etc/chrony.conf，來看看怎麼做 chrony is a versatile implementation of the Network Time Protocol (NTP). — 當個 NTP Client — -1. 安裝 chrony $ sudo dnf install chrony -2. 修改 /etc/chrony.conf $ sudo vi /etc/chrony.

Oracle Linux 7 Latest packages (x86_64)

https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/index.html

How to Clean RAID Signatures on Linux

By Eric Ma | In Hardware, Linux, Tutorial | Updated on Aug 16, 2015 RAID systems such as MegaRAID add signatures to disks to maintain the infomration on these didks. When we simply remove these disks and install them to another server, Linux on the new server may detect these RAID signature