\n
Summary<\/h3>\n
<\/p>\n
- \n
- RAID configuration for a dell server<\/a><\/li>\n
- Prerequistes<\/a><\/li>\n
- Softwares choice<\/a><\/li>\n
- Disk partitionning<\/a><\/li>\n
- Set Date and time <\/a><\/li>\n
- Begin Installation <\/a><\/li>\n
- Root and user password<\/a><\/li>\n
- Set Date and time <\/a><\/li>\n
- storage configuration<\/a><\/li>\n
- Network configuration<\/a><\/li>\n
- Install packages with yum command<\/a><\/li>\n
- quotas management<\/a><\/li>\n
- Create a local package repository<\/a><\/li>\n
- Links<\/a><\/li>\n
- License<\/a><\/li>\n<\/ul>\n
\nCENTOS 7 INSTALLATION<\/h1>\n
<\/a><\/p>\n
RAID configuration for a dell server<\/h2>\n
modify the boot settings to boot in BIOS mode:<\/h3>\n
Boot the server and press
F2 system setup<\/code>.<\/p>\nChoose
system BIOS<\/code><\/p>\nChoose
Boot Settings<\/code><\/p>\nThen on
Boot Mode<\/code> chooseBIOS<\/code> then pressexit<\/code> and finish to go back to the normal boot<\/p>\nWhen you see that screen, just press
CTRL +R<\/code> to go inside thePERC H730P RAID configuration utility<\/code><\/p>\nChoose
Create new VD<\/code><\/p>\ncreate The RAID disks<\/h3>\n
RAID disk allows you to regroup physical disk into a virtual one.<\/p>\n
There are 7 disks available:<\/p>\n
* 2 with 300 GB\n* 5 with 4TB<\/code><\/pre>\nWe are going to create a RAID1 with the 2 disks of 300Go: they will be used to install the system.<\/p>\n
We are going to create a RAID6 with the 5 remaining disk of 4To: they will used to store data.<\/p>\n
create the Virtual disk:<\/h3>\n
Underline the
PERC H730P Adapter (Bus 0x19, Dev 0x00)<\/code> line and pressF2<\/code><\/p>\nChoose
create new VD<\/code><\/p>\nIn
RAID Level<\/code> , choose RAID-1 <\/p>\nUnderline the 2 first disks and press enter to select them.<\/p>\n
Press
OK<\/code> when your are done<\/p>\nPerform the same operation with the 5 remaings disks choosing
RAID-6<\/code> <\/p>\n
\n<\/a><\/p>\n
Prerequisites:<\/h2>\n
A USB key or a CD is needed<\/p>\n
Sources can be found here : https:\/\/www.centos.org\/<\/a><\/p>\n
Installation:<\/h2>\n
- \n
- Choose
\u00ccnstall Centos 7<\/code> on the following screen:<\/li>\n<\/ul>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos1.png\"\/)
<\/p>\n- \n
- This screen appears:<\/li>\n<\/ul>\n
![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos2.png\"\/)
<\/p>\nLanguage choice:<\/h2>\n
- \n
- Choose your language and click on
continue<\/code><\/li>\n<\/ul>\n
\n<\/a><\/p>\n
Softwares choice:<\/h2>\n
![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos3.png\"\/)
<\/p>\nIn
Software selection<\/code>, choosecompute node<\/code> with the following softwares:<\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos4.png\"\/)
<\/p>\nThen choose
Infrastructure Server<\/code> with the following softwares:<\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos5.png\"\/)
<\/p>\n
\n<\/a><\/p>\n
Disk partitioning:<\/h2>\n
We are going to create 4 partitions on the new system:<\/p>\n
\u2022 \/home : hosts users personal data\n \u2022 \/usr\/local\/bioinfo : hosts bioinformatics software\n \u2022 \/data : hosts project data\n \u2022 \/: hosts system configuration files<\/code><\/pre>\nTo implement the disk partitioning, choose
System<\/code> then\u00ccnstallation Destination<\/code> <\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos6.png\"\/)
<\/p>\nSelect the hard drive on which you want to install Centos7 anc chose
I will configure the partitioning<\/code>:<\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos7.png\"\/)
<\/p>\nThe partitions are going to be made in LVM.<\/p>\n
Click on
+<\/code> to add a new partition:<\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos8.png\"\/)
<\/p>\nCreate the following partitions with the specified features:<\/p>\n
* \/boot: 200Mo, mount point: \/boot, type of partition: boot check theReformat<\/code>box\n\n * swap: 4000Mo, mount point: swap, type of partition: swap check theReformat<\/code>box\n\n * \/home: size to define, mount point: \/home, type of partition: xfs check theReformat<\/code>box\n\n * \/data: size to define, mount point: \/data, type of partition: xfs check theReformat<\/code>box\n\n * \/usr\/local: size to define, mount point: \/usr\/local, type of partition: xfs check theReformat<\/code>box<\/code><\/pre>\nOnce all the partitions are defined click on
done<\/code> to continue<\/p>\nA windows appears and click
Accept changes<\/code><\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos9.png\"\/)
<\/p>\n
\n<\/a><\/p>\n
Set Date and Time:<\/h2>\n
Click on the clock icon under the localization menu and select a time zone from the map of the world, then click
Done<\/code><\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos10.png\"\/)
<\/p>\n
\n<\/a><\/p>\n
Begin Installation:<\/h2>\n
click on the
Begin Installation button<\/code>.<\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos11.png\"\/)
<\/p>\n
\n<\/a><\/p>\n
Root and user password:<\/h2>\n
The installation begins and you can create a user and choose a root password.<\/p>\n
Choose a root password:<\/h3>\n
![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos12.png\"\/)
<\/p>\nThen click
Done<\/code><\/p>\nCreate a user:<\/h3>\n
If you want this user to have admin rights tick
Make this user administrator<\/code>:<\/p>\n![](\"https:\/\/southgreenplatform.github.io\/trainings\/\/images\/centos13.png\"\/)
<\/p>\n
\n<\/a><\/p>\n
Name configuration:<\/h2>\n
To modify the name, launch the following command:<\/p>\n
$ hostnamectl set-hostname name-server<\/code><\/pre>\n
\n<\/a><\/p>\n
storage configuration:<\/h2>\n
We have to configure the RAID-6 disk to be able to mount them in the \/data partition.<\/p>\n
check the name of your device:<\/h3>\n
$ fdisk -l<\/code><\/pre>\nShows you the list of the hardrives and their names<\/p>\n
On this server, it is
\/dev\/sdb<\/code><\/p>\nFormat the disk in GPT:<\/h3>\n
$ parted \/dev\/sdb mklabel gpt\n $ parted \/dev\/sdb\n $ mkpart primary xfs 1 -1\n $ quit<\/code><\/pre>\n\/dev\/sdb1 partition has been created.<\/p>\n
Format partition in xfs:<\/h3>\n
$ mkfs.xfs -L data \/dev\/sdb1<\/code><\/pre>\nMount the content of the device \/dev\/sdb1 into \/data and enable the quota<\/h3>\n
Create the folder
\/data<\/code>:<\/p>\n$ mkdir \/data<\/code><\/pre>\nModify the file
\/etc\/fstab<\/code> with:<\/p>\n\/dev\/sdb1 \/data xfs pquota 1 2<\/code><\/pre>\nlaunch the following command to take into account the modifications:<\/p>\n
$ mount -a<\/code><\/pre>\n
\n<\/a><\/p>\n
Network configuration:<\/h2>\n
Deactivate selinux:<\/h3>\n
The security system selinux has to be deactivated to prevent essentials port to be blocked.<\/p>\n
In a console, open the configuration file
\/etc\/selinux\/config<\/code> and setSELINUX<\/code>todisabled<\/code><\/p>\nReboot the server to make the change permanent.<\/p>\n
Disable firewalld:<\/h3>\n
$ systemctl stop firewalld\n $ systemctl disable firewalld<\/code><\/pre>\nSet the IP address:<\/h3>\n
Determine the name of the network interfaces with the command:<\/p>\n
$ ifconfig -a<\/code><\/pre>\nIn the following example, the interface to configure is
enp0s3<\/code><\/p>\n![\"image\"](\"\/uploads\/1e908d297ede2f72eea59d5b6fb06644\/image.png\")
<\/p>\nThe configuration files for the network interfaces are located in :
\/etc\/sysconfig\/network-scripts\/<\/code><\/p>\nUsually a network file is named :
ifcfg-interface-name<\/code> for example here it will be:\u00ecfcfg-em1<\/code><\/p>\nOpen the configuration file corresponding to the interface you want to configure and modify it like this:<\/p>\n
TYPE=Ethernet\n BOOTPROTO=static\n DEFROUTE=yes\n NAME=enp0s3\n ONBOOT=yes\n IPADDR0= * IP_Adress *\n PREFIX0= * netmask *\n GATEWAY0= * gateway_ip *\n DNS1=* DNS_Ip_server * <\/code><\/pre>\nLaunch the following command to implement the new configuration:<\/p>\n
$ service network restart <\/code><\/pre>\nAdd default route:<\/h3>\n
$ route add default gw GATEWAY_IP_ADDRESS INTERFACE_NAME<\/code><\/pre>\n
\n<\/a><\/p>\n
Install packages with yum command<\/h2>\n
yum allows you to install packages on Centos from multiple repositories available on the Internet or locally.<\/p>\n
To search for a particular package:<\/p>\n
$ yum search package <\/code><\/pre>\nTo install a particular package:<\/p>\n
$ yum install package<\/code><\/pre>\nTo list the version of a package:<\/p>\n
$ yum list package<\/code><\/pre>\n
\n<\/a><\/p>\n
quotas management<\/h2>\n
Set up quotas on a XFS partition <\/strong><\/h3>\n
1.in the
\/etc\/fstab<\/code> file for each xfs partition add uquota and pquota option:<\/p>\n- \n
- uquota: quota per user on the xfs partition <\/li>\n
- pquota: quota per project on the xfs partition <\/li>\n<\/ul>\n
\/dev\/sdb1 \/data xfs uquota,pquota 1 2\n<\/code><\/pre>\n2.Save the file, then type this command to validate modifications:<\/p>\n
$ mount -a<\/code><\/pre>\nProject creation<\/strong><\/h3>\n
1.Complete the files:<\/p>\n
- \n
- \/etc\/projects with id_project:\/path\/project_name<\/li>\n
- \/etc\/projid with project_name:id<\/li>\n<\/ul>\n
_with id: the project number to increment each time
\navec project_name: the projectname<\/em><\/p>\n2.Set up the quota with the following commands:<\/p>\n
$ xfs_quota -x -c \"project -s project_name\" \n$ xfs_quota -x -c \"limit -p bsoft=199g bhard=200g project_name\" \/partition<\/code><\/pre>\n- \n
- with bsoft being the limit when the user is going to receive a warning. User has 7 days to remove data<\/li>\n
- bhard: effective limit<\/li>\n<\/ul>\n
Monitor quotas project<\/strong><\/h3>\n
$ xfs_quota -xc \"report -hp\" \/partition\n $ xfs_quota -xc \"report -hp\" \/data<\/code><\/pre>\nUser quota creation<\/strong><\/h3>\n
$ xfs_quota -x -c \"limit -u bsoft=99g bhard=100g user\" \/home <\/code><\/pre>\nMonitor quota user<\/strong><\/h3>\n
{% highlight bash %}$ xfs_quota -xc 'report -hu' \/partition
\n$ xfs_quota -xc 'report -hu' \/home {% endhighlight %}<\/p>\nDelete a quota<\/strong><\/h3>\n
Set the limits to 0<\/p>\n
{% highlight bash %}$ xfs_quota -x -c "limit -p bsoft=0g bhard=0g projet"
\n$ xfs_quota -x -c "limit -u bsoft=0g bhard=0g user" \/home {% endhighlight %}<\/p>\n
\n<\/a><\/p>\n
Create a local package repository<\/h2>\n
When a server is not connected to the Internet, it is sometimes convenient to be able to install packages from a local repository. <\/p>\n
### copy the USB key or DVD:<\/code><\/pre>\nlaunch the following command:<\/p>\n
{% highlight bash %}$ mkdir \/opt\/Centos7
\n$ mount \/dev\/sdc \/mnt # \/dev\/sdc being the DVDROM or USB key device path
\n$ cp -r \/mnt\/* \/opt\/Centos7{% endhighlight %}<\/p>\nModify the file
\/etc\/yum\/repos.d\/Centos-Base.repo<\/code><\/h3>\nIn the
[base]<\/code>section, comment the lignemirrolist<\/code>and replacebaseurl<\/code> line with:<\/p>\nbaseurl=file:\/opt\/Centos7<\/code><\/pre>\nIn the sections
[updates]<\/code>,[extras]<\/code> and[centosplus]<\/code> add the follwing line:<\/p>\nenabled=0<\/code><\/pre>\n
\nLinks<\/h3>\n
- Choose your language and click on
- This screen appears:<\/li>\n<\/ul>\n
- Prerequistes<\/a><\/li>\n
![](\"http:\/\/creativecommons.org.nz\/wp-content\/uploads\/2012\/05\/by-nc-sa1.png\"\/)