CentOS, RHEL, and Alma: The Plot Thickens!

IBM recently announced that CentOS was no longer going to be CentOS.  As we discussed previously, CentOS used to be downstream of RedHat Enterprise Linux and was a nearly 1:1 clone.  Now it’s moving upstream and will be a place for development and experimentation, which is a radical departure from its previous usage.

In the past couple of days, there have been two new developments:

  • IBM announced that starting February 1, RedHat Enterprise Linux will be free for up to 16 production servers.  This is a huge departure from previous pricing.  Although the sudden CentOS change may have left a bad taste in some user’s mouths, the opportunity to run your systems on true RHEL will be attractive for many.
  • CloudLinux announced AlmaLinux.  LowEndBox recently interviewed Igor Seletskiy, CEO of CloudLinux.  They’d tentatively named their project Project Lenix but AlmaLinux is the go-forward name.

The Linux landscape is always dynamic and changing so stay tuned for further news on this front.

In the meantime, here is an interview with Igor Seletskiy on CloudLinux’s CentOS Replacement project from December 4, 2020:

The post CentOS, RHEL, and Alma: The Plot Thickens! appeared first on Low End Box.

firefox – goodluckdog.space removal from FF in RHEL

ALL,

Most of the instructions, if not all, on the Web (Google) is for Windows, but I need a way to do that in RHEL on FF.

I did search the FF “Add-On” menu, but it is empty – nothing is there.

I did check the “Options”/”Prefedrences” menu, but again – nothing is there.

And I still am redirecting to this stupid site (Adware).

Any suggestions?

TIA!!

linux – rhel + upgrade individual rpm’s from rhel 7.1 to rhel 7.7 or batch upgrade of rpms

We have rhel 7.1 version server , with local repositories of rhel 7.1 ( with rpms’ from rhel 7.1 )

We want to replace the local repository with rpm’s of rhel 7.7

so we intend to Remove the local repo of 7.1 as

rm -rf /var/RHEL7.1

and create new repo for 7.7 as

mkdir /var/RHEL7.7 

and push to /var/RHEL7.7/Packages all rpm’s that related to rhel 7.7

and replace the repo conf as

Example

/etc/yum.repo.d/rhel7.1.repo

To

/etc/yum.repo.d/rhel7.7.repo

So every yum installor yum update , will point to the repository of rpms from rhel 7.7 ( /etc/yum.repo.d/rhel7.7 )

We not sure if we can upgrade each rpm from rhel 7.1 to rhel 7.7 , so I want to ask the forum here , if this is possible and update of every rpm from rhel 7.1 to 7.7 can be done without problem

so dose upgrade of individual rpm’s from rhel 7.1 to rhel 7.6 or batch of rpm cam be risk or with conflict?

mount – Failed to commit changes to dconf error when homedir is remote (cifs) on RHEL 8

I am using pam_mount to remote mount home directories (CIFS).

The home directories are mounted successfully.

However, there’s something that isn’t working well: When I log in via GDM, I get no window opened when clicking on Files.

I see that when I run journalctl -fI get one error every second:

Sep 21 11:59:33 tb-rhel-8-workstation gnome-shell(14737): failed to commit changes to dconf: GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._g_2dfile_2derror_2dquark.Code24: Failed to rename file “/home/francis/.config/dconf/user.BLJ6Q0” to “/home/francis/.config/dconf/user”: g_rename() failed: Device or resource busy

I see that all the directories under .config are owned by the user francis, so I don’t know really what is the problem here.

Any tips?

linux – rhel + dmesg + Buffer I/O error on dev dm-0, logical block

we installed some new VM machines with rhel 7.6

but from dmesg we found the following errors

(14706.075255) sd 1:0:0:0: timing out command, waited 1080s
(14706.075370) sd 1:0:0:0: timing out command, waited 1080s
(14706.075881) sd 1:0:0:0: timing out command, waited 1080s


(14706.076007) Buffer I/O error on dev dm-2, logical block 19736964, lost async page write
(14706.076081) Buffer I/O error on dev dm-2, logical block 1268620, lost async page write
(14706.076128) Buffer I/O error on dev dm-2, logical block 19736968, lost async page write
(14706.076172) Buffer I/O error on dev dm-2, logical block 19736966, lost async page write
(14706.076909) Buffer I/O error on dev dm-2, logical block 19736967, lost async page write
(14706.077721) Buffer I/O error on dev dm-2, logical block 19736969, lost async page write
(14706.077760) Buffer I/O error on dev dm-2, logical block 1268621, lost async page write
(14706.077775) Buffer I/O error on dev dm-2, logical block 19736972, lost async page write
(14706.077936) Buffer I/O error on dev dm-2, logical block 1268624, lost async page write
(14706.079369) XFS (dm-2): metadata I/O error: block 0x9694c78 ("xfs_buf_iodone_callback_error") error 5 numblks 8
(14858.217013) buffer_io_error: 3198 callbacks suppressed
(14858.217051) Buffer I/O error on dev dm-0, logical block 978837, lost async page write
(14858.217058) Buffer I/O error on dev dm-0, logical block 978838, lost async page write
(14858.217061) Buffer I/O error on dev dm-0, logical block 978839, lost async page write
(14858.217064) Buffer I/O error on dev dm-0, logical block 978840, lost async page write
(14858.217066) Buffer I/O error on dev dm-0, logical block 978841, lost async page write
(14858.217069) Buffer I/O error on dev dm-0, logical block 978842, lost async page write
(14858.217072) Buffer I/O error on dev dm-0, logical block 978843, lost async page write
(14858.217075) Buffer I/O error on dev dm-0, logical block 978844, lost async page write
(14858.217080) Buffer I/O error on dev dm-0, logical block 978845, lost async page write
(14858.217083) Buffer I/O error on dev dm-0, logical block 978846, lost async page write

is that errors are related to disks ? or file-system or memory cards ?

any advice how to continue from this situation to solution ?

migrating mysql rhel6 to mariadb rhel 8

I have 3 servers running MySQL on RHEL6. I need to replace the servers with one’s running MariaDB on RHEL8. I know 2 of them are in master/slave configuration. I have been studying this but I still have some questions.

  1. Is it possible for: Server A to be master to server B while at the same time, B is master to server C? In other words: A(Master) -> B(Slave/Master) -> C(Slave)

  2. How do I determine how a MySQL server gets it’s data?

  3. Can a mysqldump get configuration details concerning Master/Slave setup?

  4. Does anyone have recommendations on how to and in what order to upgrade SQL servers?

Thank you for your time.

domain name system – DNS lookup error when using docker-compose inside RHEL behind organization proxy

Facing the DNS lookup error while running docker-compose -f docker-compose.prod.yml up

fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz: DNS lookup error

Post this the docker build fails.

Also nslookup also fails with server can't find .... NXDOMAIN

Sidenote – This is an organization’s on-premises server behind proxy. I believe I have set http_proxy correctly.

My IT support guy gave cryptic answer with no help “you will either need own DNS or internal resolution for containers” and “you may want to request DNS and SRV records to be made pointing to your cluster hosts”

redhat – RHEL + OS with XFS file system while adding additional partition with diff definition

We have the following disk – sda ( in server production – very important server )

sda is the disk of the OS ( rhel 7.2 ) , and file system is xfs

sda is physical disk

Xfs created with – mkfs.xfs -f -n ftype=0 /dev/sda

lsblk
NAME             MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                8:0    0 558.4G  0 disk
├─sda1             8:1    0   500M  0 part /boot
└─sda2             8:2    0 557.9G  0 part
  ├─rhel0-lv_root 253:0    0    50G  0 lvm  /
  ├─rhel0-lv_swap 253:1    0    16G  0 lvm  (SWAP)
  └─rhel0-lv_var  253:2    0   100G  0 lvm  /var
sdb                8:16   0   5.5T  0 disk /var/DB
(root@server_prod01 ~)# pvs
  PV         VG   Fmt  Attr PSize   PFree
  /dev/sda2  rhel0 lvm2 a--  557.88g 391.88g

Since we have from Pfree 391G

We want to add additional partition – sda3 and builds xfs filesystem on sda3 but little different as mkfs.xfs -f -n ftype=1

Is it possible ?