NethServer 7 RC2 crashes when I install / uninstall module or update system

Support
,
21

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

22

That line must be removed

2 Likes
23

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?

24

Doing it one more time does not harmā€¦ Yes, do it.

Log in on server-manager: if dashboard, user and groups show correctly Iā€™d say youā€™re ok.

Check the kernel version in dashboard is 3 (no more lt).

Test also login on roundcubemail.

25

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

Pasted image1920Ɨ1080 177 KB

26

Open a shell and type

chmod -x /etc/e-smith/events/actions/nethserver-directory-sssd

Letā€™s see if it stabilizes before starting to kill processesā€¦

BTW your kernel is still LT! You must boot with the upstream kernel.

1 Like
27

ok! RAM was almost completely free, idem for swap.

I also relaunched signal-event nethserver sssd-save and this time it was successful.

Now itā€™s hard for me to reboot remotely and select the right kernel.
I do not know ways to do it.

28

The grubby command you issued above should select it automatically but it seems it didnā€™t work!

29

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' {
30

Second one:

1 Like
31

Since you didnā€™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

More info: https://docs.fedoraproject.org/en-US/Fedora/23/html/System_Administrators_Guide/sec-Configuring_GRUB_2_Using_the_grubby_Tool.html

3 Likes
32

@giacomo thanks! I managed to remove the kernel-lt and set the right kernel

3 Likes
33

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

ā€¦ and letā€™s see if the issue comes back!

34

Sure Iā€™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, letā€™s see if I memory problems again

2 Likes
35

roundcube works again! thank you so much for your time!

4 Likes