RAID Solution 24.1, question about mdadm --detail

Hallo,
I have two questions:
First: In the course and in the training the method to put the ARRAY into mdadm.conf file is
sudo bash -c "mdadm --detail --scan >> /etc/mdadm.conf". Why calling bash with sudo here? Why not calling mdadm with sudo direct like:
sudo mdadm --detail --scan >>/etc/mdadm.conf
Can anyone tell?
Second: You place the conf file in /etc (/etc/mdadm.conf) but on my ubuntu system "man mdadm" tells in the section about the --config switch, that the default is to use /etc/mdadm/mdadm.conf and if this is not present, to use /etc/mdadm.conf.
So on my system the /etc/mdadm/mdadm.conf file is present. Do I not have to put the ARRAY section in here rather than creating a new file /dev/mdadm.conf ?
Regards
Frank
Comments
-
you can never do things like sudo echo hello > /hello, as sudo doesn't work with redirection; that is a separate process from the echo and is not givcen rights; try it, so you must become root or do the sudo bash -c trick
for your second question, distros differ exactly where they put files so follow the setup on your system, that should work.
2
Categories
- 9.7K All Categories
- 21 LFX Mentorship
- 74 LFX Mentorship: Linux Kernel
- 435 Linux Foundation Boot Camps
- 259 Cloud Engineer Boot Camp
- 86 Advanced Cloud Engineer Boot Camp
- 40 DevOps Engineer Boot Camp
- 17 Cloud Native Developer Boot Camp
- Express Training Courses
- Express Courses - Discussion Forum
- 1.5K Training Courses
- 17 LFC110 Class Forum
- 3 LFC131 Class Forum
- 18 LFD102 Class Forum
- 112 LFD103 Class Forum
- 8 LFD121 Class Forum
- 59 LFD201 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 23 LFD254 Class Forum
- 526 LFD259 Class Forum
- 99 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFS145 Class Forum
- 18 LFS200 Class Forum
- 736 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- LFS203 Class Forum
- 23 LFS207 Class Forum
- 292 LFS211 Class Forum
- 53 LFS216 Class Forum
- 41 LFS241 Class Forum
- 33 LFS242 Class Forum
- 31 LFS243 Class Forum
- 9 LFS244 Class Forum
- 27 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- 123 LFS253 Class Forum
- 916 LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 78 LFS260 Class Forum
- 122 LFS261 Class Forum
- 27 LFS262 Class Forum
- 77 LFS263 Class Forum
- 15 LFS264 Class Forum
- 10 LFS266 Class Forum
- 13 LFS267 Class Forum
- 16 LFS268 Class Forum
- 13 LFS269 Class Forum
- 190 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 201 LFW211 Class Forum
- 147 LFW212 Class Forum
- 887 Hardware
- 210 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 206 Networking
- 98 Printers & Scanners
- 85 Storage
- 744 Linux Distributions
- 88 Debian
- 64 Fedora
- 12 Linux Mint
- 13 Mageia
- 24 openSUSE
- 132 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 353 Ubuntu
- 465 Linux System Administration
- 37 Cloud Computing
- 65 Command Line/Scripting
- Github systems admin projects
- 94 Linux Security
- 77 Network Management
- 107 System Management
- 47 Web Management
- 59 Mobile Computing
- 21 Android
- 24 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 523 Off Topic
- 126 Introductions
- 210 Small Talk
- 19 Study Material
- 779 Programming and Development
- 254 Kernel Development
- 491 Software Development
- 918 Software
- 255 Applications
- 181 Command Line
- 2 Compiling/Installing
- 75 Games
- 316 Installation
- 43 All In Program
- 43 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)