EN Ikoula wiki - User contributions [en]

Performance test via a netboot

2023-03-13T20:41:07Z

Acordemy6bd86:

[[:fr:Test de performance via un netboot]][[fr:Test de performance via un netboot]]
 This article has been created by an automatic translation software. You can view the article source [[:fr:Array|here]]. 
{{#seo:
|title=Performance test via a netboot
|title_mode=append
|keywords=these,are,your,keywords
|description=Discover in this article how to perform a performance test via a netboot
|image=Uploaded_file.png
|image_alt=Wiki Logo
}}

<center>[[File:Ico_Ded.png| 100px]] [[File:ROUAGEikl-12-2021.png| 100px]] </center>

When using your [https://www.ikoula.com/fr/serveur-dedie dedicated server]you may need to boot your server on a backup system called ''' Netboot '''.
Netboot, commonly known as SystemRescue, is an open source operating system, designed to be used without installation to allow administration, restoration or repair of an already installed system on a desktop, laptop or computer server.
Among other things, it allows operations to be performed on a system that no longer boots in normal mode. It completely isolates the equipment from the existing configuration.

In this article, you will find useful commands to test your hardware.

=== Launching the Netboot ===

To start your dedicated server in this mode, you need to log in to your [https://extranet.ikoula.com/ Extranet] 
Go to "Physical server" and choose the server you are interested in.

Then in the list of features go to Netboot.

[[File:Netboot_launch.png]]

 ''' /!\ As a reminder, the connection information to the server in Netboot are the identifiers received when your server was delivered /!\ ''' 

=== Check the temperature ===

The command '''sensors''' command allows you to display the processor's temperatures.

During the various performance tests, it may be useful to run the

 '''watch sensors''' 

This command will continuously monitor the machine's processor temperatures.

=== Check the integrity of the processor ===

The command '''stress''' command will stress the processor. Thus, the command

 '''stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 60m''' 

command will work the processor and memory and test your I/O for 60 minutes.

This is the '''--timeout''' option that will set the stress time.

If the test stops unexpectedly in full operation, the processor is no longer able to bear the load and/or is getting too hot.

----

=== Check the health of the hard disk ===

Before performing this test, the structure of the disks must be known.

The command '''fdisk -l''' command allows you to consult the partitions present, their types, their locations and their sizes.

[[File: Disk_lvm.PNG | 500px ]]

----

=== Check the health of SATA drives ===

The command '''smartctl''' command allows you to perform a complete test of your hard disk. The following command:
 '''smartctl -d ata -a -f old /dev/<disque>''' 

allows you to have all the useful information about your disk and its current state.

To test your hard disk, run the command:
 '''smartctl -t short /dev/<disque>''' 
Replace ''short'' with ''long'' for a longer and more complete test.

''''' /!\ Replace /dev/<disque> with the name of your disk (/dev/sda, /dev/sdb, etc...) /!\ '''''

----

=== Check the health of the NVME disk ===

Always with the command '''smartctl'''command, the following command:

 ''' smartctl -a /dev/nvme0n1''' 

will also give you all the information you need about your NVME and its current status.

At the end of the test, you will receive a detailed report of the test.

== Check RAM memory ==

This is the '''memtester''' command, which will test the integrity of your memory. It is preferable to test the entire memory capacity of your machine.

To do this, type the command:
 '''memtester 16g 2 '''
where you replace 16g with the amount of memory you have (g for giga) and the 2 indicates the number of times the test should be performed.

----

If you have encountered any difficulties in following this article, or if you would like to provide any information about it, our technical support team is at your disposal:

* 24h/24 et 7j/7 by ticket from your Customer Area
* Monday to Friday from 9am to 7pm on 01 84 01 02 50


[[Category:netboot]]
[[Category:Dedicated server]]

Performance test via a netboot

2023-03-13T20:39:41Z

Acordemy6bd86:

[[:fr:Test de performance via un netboot]][[fr:Test de performance via un netboot]]
 This article has been created by an automatic translation software. You can view the article source [[:fr:Array|here]]. 
{{#seo:
|title=Performance test via a netboot
|title_mode=append
|keywords=these,are,your,keywords
|description=Discover in this article how to perform a performance test via a netboot
|image=Uploaded_file.png
|image_alt=Wiki Logo
}}

<center>[[File:Ico_Ded.png| 100px]] [[File:ROUAGEikl-12-2021.png| 100px]] </center>

When using your [https://www.ikoula.com/fr/serveur-dedie dedicated server]you may need to boot your server on a backup system called ''' Netboot '''.
Netboot, commonly known as SystemRescue, is an open source operating system, designed to be used without installation to allow administration, restoration or repair of an already installed system on a desktop, laptop or computer server.
Among other things, it allows operations to be performed on a system that no longer boots in normal mode. It completely isolates the equipment from the existing configuration.

In this article, you will find useful commands to test your hardware.

=== Launching the Netboot ===

To start your dedicated server in this mode, you need to log in to your [https://extranet.ikoula.com/ Extranet] 
Go to "Physical server" and choose the server you are interested in.

Then in the list of features go to Netboot.

[[File:Netboot_launch.png]]

 ''' /!\ As a reminder, the connection information to the server in Netboot are the identifiers received when your server was delivered /!\ ''' 

=== Check the temperature ===

The command '''sensors''' command allows you to display the processor's temperatures.

During the various performance tests, it may be useful to run the

 '''watch sensors''' 

This command will continuously monitor the machine's processor temperatures.

=== Check the integrity of the processor ===

The command '''stress''' command will stress the processor. Thus, the command

 '''stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 60m''' 

command will work the processor and memory and test your I/O for 60 minutes.

This is the '''--timeout''' option that will set the stress time.

If the test stops unexpectedly in full operation, the processor is no longer able to bear the load and/or is getting too hot.

----

=== Check the health of the hard disk ===

Before performing this test, the structure of the disks must be known.

The command '''fdisk -l''' command allows you to consult the partitions present, their types, their locations and their sizes.

[[Fichier : Disk_lvm.PNG | 500px ]]

----

=== Check the health of SATA drives ===

The command '''smartctl''' command allows you to perform a complete test of your hard disk. The following command:
 '''smartctl -d ata -a -f old /dev/<disque>''' 

allows you to have all the useful information about your disk and its current state.

To test your hard disk, run the command:
 '''smartctl -t short /dev/<disque>''' 
Replace ''short'' with ''long'' for a longer and more complete test.

''''' /!\ Replace /dev/<disque> with the name of your disk (/dev/sda, /dev/sdb, etc...) /!\ '''''

----

=== Check the health of the NVME disk ===

Always with the command '''smartctl'''command, the following command:

 ''' smartctl -a /dev/nvme0n1''' 

will also give you all the information you need about your NVME and its current status.

At the end of the test, you will receive a detailed report of the test.

== Check RAM memory ==

This is the '''memtester''' command, which will test the integrity of your memory. It is preferable to test the entire memory capacity of your machine.

To do this, type the command:
 '''memtester 16g 2 '''
where you replace 16g with the amount of memory you have (g for giga) and the 2 indicates the number of times the test should be performed.

----

If you have encountered any difficulties in following this article, or if you would like to provide any information about it, our technical support team is at your disposal:

* 24h/24 et 7j/7 by ticket from your Customer Area
* Monday to Friday from 9am to 7pm on 01 84 01 02 50


[[Category:netboot]]
[[Category:Dedicated server]]

File:Disk lvm.PNG

2023-03-13T20:39:17Z

Acordemy6bd86:

File:Netboot launch.png

2023-03-13T20:34:28Z

Acordemy6bd86:

File:ROUAGEikl-12-2021.png

2023-03-13T20:33:14Z

Acordemy6bd86:

File:Ico Ded.png

2023-03-13T20:32:30Z

Acordemy6bd86:

File:Dns checker.png

2023-03-03T16:12:15Z

Acordemy6bd86:

File:Plesk SSL.png

2023-03-03T16:11:34Z

Acordemy6bd86:

File:Plesk Secure.png

2023-03-03T16:11:21Z

Acordemy6bd86:

File:Plesk LetsEncrypt.png

2023-03-03T16:11:11Z

Acordemy6bd86:

File:Plesk Wildcard.png

2023-03-03T16:10:58Z

Acordemy6bd86:

File:DNS Plesk SSL.png

2023-03-03T16:10:46Z

Acordemy6bd86:

File:LetsEncrypt.png

2023-03-03T16:09:49Z

Acordemy6bd86:

Reinstalling GRUB from a Netboot

2022-11-25T08:11:51Z

Acordemy6bd86:

[[:fr:Reinstallation de GRUB depuis un Netboot]][[fr:Reinstallation de GRUB depuis un Netboot]]


This documentation explains the procedure for reinstalling GRUB from a Netboot

<div style="background-color: #e78581;">
 /!\ Mounting partitions may result in data loss. Be aware of the danger of your manipulations. /!\ 
</div>

==Launching the netboot == 
The netboot is a network boot mode on a Linux light image that allows, among other things, to perform operations on a system that no longer boots in normal mode.

From your extranet interface, you have the possibility to launch it on your machine.

You can also use this documentation: [[What is that the netboot and how to launch?]]

== Orders to be carried out == 
Once your netboot is effective on your server, you will have to follow the following commands:

fdisk -l # to help you find the partition where your ubuntu is
mount /dev/sdaX /mnt # mount it by replacing the X with the correct partition number
mount --bind /dev /mnt/dev # symbolic link from the current /dev folder to the mounted disk
mount --bind /dev/pts /mnt/dev /pts # symbolic link from the current /dev/pts folder to the mounted disk
mount --bind /sys /mnt/sys # symbolic link from the current /sys folder to the mounted disk
mount -t proc /proc /mnt/proc # For Grub2 to find /proc/mounts
chroot /mnt /bin/bash # root the mounted disk
mount -a # mount partitions in chroot
apt-get install grub-pc # install Grub2 software (on the now-rooted disk)
update-grub # create a new configuration file: grub.cfg
grub-install --force /dev/sda # install grub on MBR

Now you just have to unmount the partitions mounted in the chroot:

umount -a

From here, you can exit the mounted disk by pressing ctrl+D. Then, unmount this disk:

sudo umount /mnt/{dev/pts,dev,sys,proc}
sudo umount /mnt

All you have to do is reboot your machine.

''Source : [https://doc.ubuntu-fr.org/tutoriel/comment_restaurer_grub#comment_reinstaller_grub How do I reinstall GRUB?]''


[[Category:Dedicated server]]

Reinstalling GRUB from a Netboot

2022-11-25T08:11:10Z

Acordemy6bd86:

[[:fr:Reinstallation de GRUB depuis un Netboot]][[fr:Reinstallation de GRUB depuis un Netboot]]
 This article has been created by an automatic translation software. You can view the article source [[:fr:Reinstallation de GRUB depuis un Netboot|here]]. 


This documentation explains the procedure for reinstalling GRUB from a Netboot

<div style="background-color: #e78581;">
 /!\ Mounting partitions may result in data loss. Be aware of the danger of your manipulations. /!\ 
</div>

==Launching the netboot == 
The netboot is a network boot mode on a Linux light image that allows, among other things, to perform operations on a system that no longer boots in normal mode.

From your extranet interface, you have the possibility to launch it on your machine.

You can also use this documentation: [[What is that the netboot and how to launch?]]

== Orders to be carried out == 
Once your netboot is effective on your server, you will have to follow the following commands:

fdisk -l # to help you find the partition where your ubuntu is
mount /dev/sdaX /mnt # mount it by replacing the X with the correct partition number
mount --bind /dev /mnt/dev # symbolic link from the current /dev folder to the mounted disk
mount --bind /dev/pts /mnt/dev /pts # symbolic link from the current /dev/pts folder to the mounted disk
mount --bind /sys /mnt/sys # symbolic link from the current /sys folder to the mounted disk
mount -t proc /proc /mnt/proc # For Grub2 to find /proc/mounts
chroot /mnt /bin/bash # root the mounted disk
mount -a # mount partitions in chroot
apt-get install grub-pc # install Grub2 software (on the now-rooted disk)
update-grub # create a new configuration file: grub.cfg
grub-install --force /dev/sda # install grub on MBR

Now you just have to unmount the partitions mounted in the chroot:

umount -a

From here, you can exit the mounted disk by pressing ctrl+D. Then, unmount this disk:

sudo umount /mnt/{dev/pts,dev,sys,proc}
sudo umount /mnt

All you have to do is reboot your machine.

''Source : [https://doc.ubuntu-fr.org/tutoriel/comment_restaurer_grub#comment_reinstaller_grub How do I reinstall GRUB?]''


[[Category:Dedicated server]]

Reinstalling GRUB from a Netboot

2022-11-25T08:08:42Z

Acordemy6bd86:

[[:fr:Reinstallation de GRUB depuis un Netboot]][[fr:Reinstallation de GRUB depuis un Netboot]]
 This article has been created by an automatic translation software. You can view the article source [[:fr:Reinstallation de GRUB depuis un Netboot|here]]. 


This documentation explains the procedure for reinstalling GRUB from a Netboot

< style="background-color: #e78581;">
 /!\ Le montage des partitions peut entraîner une perte de données. Faites attention à la dangerosité de vos manipulations. /!\ 
</div>

==Launching the netboot == 
The netboot is a network boot mode on a Linux light image that allows, among other things, to perform operations on a system that no longer boots in normal mode.

From your extranet interface, you have the possibility to launch it on your machine.

You can also use this documentation: [[Qu’est ce que le netboot et comment le lancer]]

== Orders to be carried out == 
Once your netboot is effective on your server, you will have to follow the following commands:

fdisk -l # to help you find the partition where your ubuntu is
mount /dev/sdaX /mnt # mount it by replacing the X with the correct partition number
mount --bind /dev /mnt/dev # symbolic link from the current /dev folder to the mounted disk
mount --bind /dev/pts /mnt/dev /pts # symbolic link from the current /dev/pts folder to the mounted disk
mount --bind /sys /mnt/sys # symbolic link from the current /sys folder to the mounted disk
mount -t proc /proc /mnt/proc # For Grub2 to find /proc/mounts
chroot /mnt /bin/bash # root the mounted disk
mount -a # mount partitions in chroot
apt-get install grub-pc # install Grub2 software (on the now-rooted disk)
update-grub # create a new configuration file: grub.cfg
grub-install --force /dev/sda # install grub on MBR

Now you just have to unmount the partitions mounted in the chroot:

umount -a

From here, you can exit the mounted disk by pressing ctrl+D. Then, unmount this disk:

sudo umount /mnt/{dev/pts,dev,sys,proc}
sudo umount /mnt

All you have to do is reboot your machine.

''Source : [https://doc.ubuntu-fr.org/tutoriel/comment_restaurer_grub#comment_reinstaller_grub How do I reinstall GRUB?]''


[[Category:Dedicated server]]