I will brutally off the machine from the power button.
Ctrl Alt Del did not work.
I think you’re experiencing hardware problem:
- your machine doesn’t have enough RAM + swap
- IMHO you should check your RAM status
@davidep how can I check if the update has been successful?
Versione sistema
NethServer release 7.3.1611 (rc3)
Versione kernel
4.4.22-1.el7.elrepo.x86_64
Modello CPU
2 x Intel® Xeon® CPU W3503 @ 2.40GHz
Utilizzo
1730 / 5960 MB
Memoria libera
4230 MB
Utilizzo
0 / 6016 MB
Swap libero
6016 MB
@giacomo believe that these resources are not enough?
I don’t believe it’s a ram shortage. I think you hit the nethserver-directory bug or similar during uninstall.
Follow rc3 release notes to fix the DPI module without Lt kernel
Not at all! 
But you surely have memory problems.
As first step, reboot the system with the new kernel and remove the kernel-lt.
Then try to list all memory hungry process (I’d check clamd as first).
less /etc/sysconfig/kernel
# ================= DO NOT MODIFY THIS FILE =================
#
# Manual changes will be lost when this file is regenerated.
#
# Please read the developer's guide, which is available
# at https://dev.nethesis.it/projects/nethserver/wiki/NethServer
# original work from http://www.contribs.org/development/
#
# Copyright (C) 2013 Nethesis S.r.l.
# http://www.nethesis.it - support@nethesis.it
#
# UPDATEDEFAULT specifies if new-kernel-pkg should make
# new kernels the default
UPDATEDEFAULT=yes
# DEFAULTKERNEL specifies the default kernel package type
DEFAULTKERNEL=kernel
EOF
I successfully changed the /etc/sysconfig/kernel?
if you give me an ok, I proceed with yum reinstall grubby -y
That line must be removed
2 Likes
I followed your directions, backed reinstall the grubby.
Now how can I check if the upgrade was successful, and the installed modules are working properly?
Although the process of installation is not completed in a linear way, I still have to perform signal-event nethserver-sssd-save?
Doing it one more time does not harm… Yes, do it.
Log in on server-manager: if dashboard, user and groups show correctly I’d say you’re ok.
Check the kernel version in dashboard is 3 (no more lt).
Test also login on roundcubemail.
I launched the command signal-event nethserver-sssd-save, but no signs of life.
Again finding of saturation problems of RAM and SWAP. In the dashboard screen is visible memory saturation and the kernel version
Open a shell and type
chmod -x /etc/e-smith/events/actions/nethserver-directory-sssd
Let’s see if it stabilizes before starting to kill processes…
BTW your kernel is still LT! You must boot with the upstream kernel.
1 Like
ok! RAM was almost completely free, idem for swap.
I also relaunched signal-event nethserver sssd-save and this time it was successful.
Now it’s hard for me to reboot remotely and select the right kernel.
I do not know ways to do it.
The grubby command you issued above should select it automatically but it seems it didn’t work!
which kernel is the right one?
# grep '^menuentry' /boot/grub2/grub.cfg
menuentry 'CentOS Linux (4.4.22-1.el7.elrepo.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-327.el7.x86_64-advanced-a260fbcd-cb7b-4a08-8c24-0c300d78e506' {
menuentry 'CentOS Linux (3.10.0-514.2.2.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-327.el7.x86_64-advanced-a260fbcd-cb7b-4a08-8c24-0c300d78e506' {
menuentry 'CentOS Linux (3.10.0-327.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-327.el7.x86_64-advanced-a260fbcd-cb7b-4a08-8c24-0c300d78e506' {
menuentry 'CentOS Linux (0-rescue-87dba42dfea045a9a4bcda15160cfb11) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-87dba42dfea045a9a4bcda15160cfb11-advanced-a260fbcd-cb7b-4a08-8c24-0c300d78e506' {Second one:
1 Like
Since you didn’t fix the grubby template before the update, you now need to set the default kernel by hand.
Execute:
grubby --set-default /boot/vmlinuz-3.10.0-514.2.2.el7.x86_64
Then reboot the machine. After the reboot, remove the lt kernel:
yum remove kernel-lt
3 Likes
We are testing a package that seems to fix your high load problem: do you want to help us?
Please install it by typing at the command line
yum --enablerepo=nethserver-testing update nethserver-directory
… and let’s see if the issue comes back!
Sure I’ll help you! I updated the package by following your instructions.
Before I had problems in the management of the account, but now it seems that everything is working again.
I proceed with reinstalling roundcube, let’s see if I memory problems again
2 Likes
roundcube works again! thank you so much for your time!
4 Likes