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[OT] Bacula offsite replication
by Alessandro Baggi 01 Jul '20

01 Jul '20

Hi everyone, I have updated my backup server to CentOS 8.2. It runs bacula performing backup on disks. I would like to replicate backups on another offsite machine. I read about the ability to configure a new storage daemon in the offsite location and create a Migration/Copy Jobs. If I'm not wrong, it replicates only volumes but not replicate the catalog. I will try this. Another way to replicate the volumes on another server is using rsync. What is your suggestion about this topic? Thank you in advance. Alessandro.

2 3

virt-manager guest display resize not keep
by Jerry Geis 01 Jul '20

01 Jul '20

Hi All, I have CentOS 7 has host and CentOS 8 as guest. I ran the command: virsh edit CentOS8 and changed the vgamem to 65536. I Now get higher resolutions in the guest - I select the 4K resolution, all works. Then when I reboot I am back to 1024x768. Any thoughts on getting the C8 guest to keep its screen resolution ? Thanks, Jerry

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Force package install using yum?
by Jeffrey Walton 01 Jul '20

01 Jul '20

Hi Everyone, I have a CentOS 7 box that's refusing a rpm update. I suspect it has something to do with SCL enabled. The 'yum update' output is shown below. I need to force this package to install. I don't give a damn about the log files. I need that server patched since it is forward facing. Taking the server offline is not an option. How do I force the package installation? Thanks in advance. ==================== Running transaction Updating : httpd24-httpd-2.4.34-18.el7.x86_64 1/2 Error unpacking rpm package httpd24-httpd-2.4.34-18.el7.x86_64 error: unpacking of archive failed on file /opt/rh/httpd24/root/etc/httpd/logs: cpio: rename httpd24-httpd-2.4.34-15.el7.x86_64 was supposed to be removed but is not! Verifying : httpd24-httpd-2.4.34-15.el7.x86_64 1/2 Verifying : httpd24-httpd-2.4.34-18.el7.x86_64 2/2 Failed: httpd24-httpd.x86_64 0:2.4.34-15.el7 httpd24-httpd.x86_64 0:2.4.34-18.el7 ==================== My attempt to force it from https://www.redhat.com/archives/fedora-list/2007-October/msg02953.html: # yum clean ... # yum install --downloadonly httpd24-httpd.x86_64 0:2.4.34-15.el7.rpm ... # yum localinstall /var/cache/yum/x86_64/7/centos-sclo-rh/packages/httpd24-httpd-2.4.34-18.el7.x86_64.rpm Loaded plugins: fastestmirror Examining /var/cache/yum/x86_64/7/centos-sclo-rh/packages/httpd24-httpd-2.4.34-18.el7.x86_64.rpm: httpd24-httpd-2.4.34-18.el7.x86_64 Marking /var/cache/yum/x86_64/7/centos-sclo-rh/packages/httpd24-httpd-2.4.34-18.el7.x86_64.rpm as an update to httpd24-httpd-2.4.34-15.el7.x86_64 Resolving Dependencies --> Running transaction check ---> Package httpd24-httpd.x86_64 0:2.4.34-15.el7 will be updated ---> Package httpd24-httpd.x86_64 0:2.4.34-18.el7 will be an update --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Updating: httpd24-httpd x86_64 2.4.34-18.el7 /httpd24-httpd-2.4.34-18.el7.x86_64 4.3 M Transaction Summary ================================================================================ Upgrade 1 Package Total size: 4.3 M Is this ok [y/d/N]: Y Downloading packages: Running transaction check Running transaction test Transaction test succeeded Running transaction Updating : httpd24-httpd-2.4.34-18.el7.x86_64 1/2 Error unpacking rpm package httpd24-httpd-2.4.34-18.el7.x86_64 error: unpacking of archive failed on file /opt/rh/httpd24/root/etc/httpd/logs: cpio: rename httpd24-httpd-2.4.34-15.el7.x86_64 was supposed to be removed but is not! Verifying : httpd24-httpd-2.4.34-15.el7.x86_64 1/2 Verifying : httpd24-httpd-2.4.34-18.el7.x86_64 2/2 Failed: httpd24-httpd.x86_64 0:2.4.34-15.el7 httpd24-httpd.x86_64 0:2.4.34-18.el7 Complete!

2 1

RPMFusion and NVIDIA driver problem
by Alessandro Baggi 01 Jul '20

01 Jul '20

Hi list, I'm on C8.1 and I'm trying to install NVIDIA driver from rpmfusion-nonfree repository but it returns: package kmod-nvidia-3:440.82-2.el8.x86_64 requires kmod-nvidia-4.18.0-147.el8.x86_64 >= 3:440.82-2.el8, but none of the providers can be installed - conflicting requests - nothing provides kernel < 4.18.0-148.el8 needed by kmod-nvidia-4.18.0-147.el8.x86_64-3:440.82-2.el8.x86_64 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) and uname -r returns: 4.18.0-193.6.3.el8_2.x86_64 Seems that RPMFusion needs an update. Waiting for this there is a way to install this package without fall in problems? Thank you in advance.

2 5

fdisk boot partition
by Jerry Geis 01 Jul '20

01 Jul '20

I am trying to use CentOS 8 host to boot an image (OS X) that I created using dd. First I tried fdisk -l image_file.img - all looks good so I did fdisk image_file.img - this works - but seems in CentOS 8 fdisk there is no longer a toggle bootable flag option. How do I do that ? Thanks, Jerry

4 3

what's the advantage of NetworkManager for server?
by d tbsky 01 Jul '20

01 Jul '20

Hi: I always use network-scripts to start network at EL7. NetworkManager is not as good as network scripts under that OS. but now EL8 said that network-scripts is depreciated. I wonder if I should still use network-scripts to start network? I am afraid there will be new bugs for the network-scripts, like systemd service unit dependency. although it is solid at EL7.

4 4

krb5 update => Database module does not match KDC version
by lejeczek 30 Jun '20

30 Jun '20

Hi everybody As a word of caution - make sure you are prepared for some trouble when upgrading krb5 packages to version 1.18.2-2.el8. FreeIPA brakes with: ...krb5kdc[554972](Error): Database module does not match KDC version - while initializing database for realm XX.YY

1 0

Unable to find the used space
by Sachchidanand Upadhyay 30 Jun '20

30 Jun '20

Hi, While checking with df -h, it's showing the used space is 94% on root (/). If checked with du -sh, it's not showing the used space. # df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 7.8G 0 7.8G 0% /dev tmpfs 7.8G 0 7.8G 0% /dev/shm tmpfs 7.8G 857M 7.0G 11% /run tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup /dev/mapper/centos-root 50G 47G 3.4G 94% / /dev/mapper/centos-home 241G 47G 195G 20% /var/log /dev/sda1 1014M 189M 826M 19% /boot tmpfs 1.6G 0 1.6G 0% /run/user/0 tmpfs 1.6G 0 1.6G 0% /run/user/1002 # du -sh /* 0 /bin 156M /boot 0 /dev 33M /etc 388K /home 0 /lib 0 /lib64 0 /media 0 /mnt 0 /opt du: cannot access ‘/proc/21489/task/21489/fd/4’: No such file or directory du: cannot access ‘/proc/21489/task/21489/fdinfo/4’: No such file or directory du: cannot access ‘/proc/21489/fd/4’: No such file or directory du: cannot access ‘/proc/21489/fdinfo/4’: No such file or directory 0 /proc 6.1M /root 857M /run 0 /sbin 0 /srv 0 /sys 0 /tmp 2.8G /usr 62G /var # du -sh /var/* 0 /var/adm 89M /var/cache 0 /var/crash 8.0K /var/db 0 /var/empty 0 /var/games 0 /var/gopher 0 /var/kerberos 16G /var/lib 0 /var/local 0 /var/lock 47G /var/log 0 /var/mail 0 /var/nis 0 /var/opt 0 /var/preserve 0 /var/run 98M /var/spool 0 /var/tmp 499M /var/www 0 /var/yp How can i find this hidden space? -- BR, Sachchidanand

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CentOS 7 system running out of available memory, then unusable, network interfaces probably involved
by wwp 30 Jun '20

30 Jun '20

Hello, my CentOS 7 system goes unstable after few days of use, memory consumption growing and never getting freed, until the system slows down to hell (swapping), kills apps, and eventually freezes or reboots itself. This only happens when I have two network interfaces turned on, one wired and one wireless, each to different routers. The hardware: a Dell Precision 7530, SSD, 16GB RAM. HW memory and disk both tested OK by software. According to lspci: 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-LM (rev 10) 6e:00.0 Network controller: Intel Corporation Wireless-AC 9260 (rev 29) The software: I keep this CentOS 7 system up-to-date with the CR repo, excepted the microcode_ctl package, stuck to few versions back (updating it kills the system and potentially causes fs damages). Kernels reproducing the issue (IOW, all): kernel-3.10.0-1062.18.1.el7.x86_64 kernel-3.10.0-1127.el7.x86_64 kernel-3.10.0-1127.8.2.el7.x86_64 kernel-3.10.0-1127.13.1.el7.x86_64 Nothing jumps to my eyes looking at /var/log/messages but this, many occurrences: kernel: nf_conntrack: falling back to vmalloc. I searched the Internet for it, and the few results I found were not bringing any solution and were quite pessimistic WRT to memory freeing, am I wrong? Regards, -- wwp https://useplaintext.email/

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Adding root CA certificates for use by NSS applications?
by James Pearson 29 Jun '20

29 Jun '20

I'm trying to get a third party application to use the root CA certificate of an SSL proxy - but can't work out how to install the cert for use by all users on CentOS 7 I have the proxy vendor's supplied CA cert in PEM format I can install the cert in a user's home directory using 'certutil' - and the application works OK - but I would like to do 'something' to install this cert somewhere central that will be picked up by all users After a bit of Googling, I've found that by default, EL7 uses 'p11-kit-trust.so' (from the p11-kit-trust package) as a drop-in replacement for the nss supplied 'libnssckbi.so' (via 'alternatives') - which, I believe, should be able to pick up CA certs installed under /etc/pki/ca-trust/source/anchors/ Strace'ing the app, I can see it reading the files under /etc/pki/ca-trust/source/... including the required CA cert - but the app fails to connect - but I have no idea what might be wrong ... Am I missing something obvious here? Is there an easier way to achieve what I want? Thanks James Pearson

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