Installer makes wget to fail

Relevant information:
CentOS Version: Almalinux 9.4
Server AX102 from Hetzner

This is my first time using Centmin Mod. I did the following:

1. Installed Almalinux 9.4
2. Ran the commands: yum update and yum upgrade
3. Disabled SELINUX
4. Rebooted the server

At this point, the wget command to GitHub was working because I tested it before running the following command:

bash installer83.sh

During the installation, the following error occurred:

installer83.sh: line 1859: /sys/module/nf_conntrack/parameters/hashsize: No such file or directory
* Applying /usr/lib/sysctl.d/10-default-yama-scope.conf ...
* Applying /etc/sysctl.d/101-sysctl.conf ...
* Applying /usr/lib/sysctl.d/50-coredump.conf ...
* Applying /usr/lib/sysctl.d/50-default.conf ...
* Applying /usr/lib/sysctl.d/50-libkcapi-optmem_max.conf ...
* Applying /usr/lib/sysctl.d/50-pid-max.conf ...
* Applying /usr/lib/sysctl.d/50-redhat.conf ...
* Applying /etc/sysctl.d/99-hetzner.conf ...
* Applying /etc/sysctl.d/99-sysctl.conf ...
* Applying /etc/sysctl.conf ...

I pressed Control-C to stop the installer because once the installer tried to access GitHub, it failed, and I did not want to reformat the server again.

After this, the ping to GitHub was very slow, and the wget command to GitHub no longer worked.

Example error with wget:
--2025-01-18 20:02:33-- (try: 3) https://github.com/jedisct1/libsodium/releases/download/1.0.20-RELEASE/libsodium-1.0.20.tar.gz Connecting to github.com (github.com)|140.82.121.3|:443... failed: Connection timed out. Giving up.

---

It seems the changes this installer made to sysctl are causing my server to fail when trying to download anything from GitHub or other links.

Additional issues:

• Pinging google.com shows a slowdown.
• wget no longer works.

I searched the forum for similar situations, but I think I am the only one experiencing this issue.

 

Hi
I dont have the motherboard issue because i did buy this servers in 15 of january 2025 and hetzner shows an message on my hetzner account.


Also this problem is happening in 2 Servers that are very different.

Dedicated Server AX102
CPU: AMD Ryzen™ 9 7950X3D
RAM: 128 GB DDR5 ECC
NVMe: 2x 1.92 TB(Gen 4)
Internet: 1 GBit/s
Location: Germany, FSN1
OS: AlmaLinux 9.4

Dedicated Server AX42
CPU: AMD Ryzen™ 7 PRO 8700GE
RAM: 128 GB DDR5
NVMe: 2x 512 TB(Gen 4)
Internet: 1 GBit/s
Location: Finland, HEL1
OS: AlmaLinux 9.4
All prints, gif, and logs are coming from this server. AX42.

How to reproduce this problem.

1. Have an Hetzner dedicated server.
2. On installimage choose Alma-94-amd64-base (AlmaLinux 9.4)


3. Follow the same commands
yum -y update && yum -y upgrade
sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config

4. Reboot

5. Test Ping and Wget (It works good)



6. Install centminMod Beta or Stable. In my case is Beta

Code (Text):

curl -O https://centminmod.com/betainstaller83.sh && chmod 0700 betainstaller83.sh && bash betainstaller83.sh

It says to reboot the system to disable SELinux then install CentminMod but SELinux was already disabled...

7. Run the command again: bash betainstaller83.sh

During the install it will take a lot of time because it will try to retry most URLs Example:

Code:

[MIRROR] apr-1.7.0-12.el9_3.x86_64.rpm: Curl error (28): Timeout was reached for https://mirror.se.altushost.com/almalinux/9.5/AppStre                                            am/x86_64/os/Packages/apr-1.7.0-12.el9_3.x86_64.rpm [Failed to connect to mirror.se.altushost.com port 443: Connection timed out]
[MIRROR] apr-1.7.0-12.el9_3.x86_64.rpm: Curl error (28): Timeout was reached for http://almalinux.web.trex.fi/almalinux/9.5/AppStream/x86_64/os/Packages/apr-1.7.0-12.el9_3.x86_64.rpm [Failed to connect to almalinux.web.trex.fi port 80: Connection timed out]
[MIRROR] gcc-toolset-13-binutils-2.40-21.el9.x86_64.rpm: Curl error (28): Timeout was reached for http://mirror.veesp.com/almalinux/9.5/AppStream/x86_64/os/Packages/gcc-toolset-13-binutils-2.40-21.el9.x86_64.rpm [Failed to connect to mirror.veesp.com port 80: Connection timed out]
[MIRROR] gcc-toolset-13-binutils-gold-2.40-21.el9.x86_64.rpm: Curl error (28): Timeout was reached for http://mirror.veesp.com/almalinux/9.5/AppStream/x86_64/os/Packages/gcc-toolset-13-binutils-gold-2.40-21.el9.x86_64.rpm [Failed to connect to mirror.veesp.com port 80: Connection timed out]
[MIRROR] gcc-toolset-13-gcc-13.3.1-2.1.el9_4.x86_64.rpm: Curl error (28): Timeout was reached for http://mirror.veesp.com/almalinux/9.5/AppStream/x86_64/os/Packages/gcc-toolset-13-gcc-13.3.1-2.1.el9_4.x86_64.rpm [Failed to connect to mirror.veesp.com port 80: Connection timed out]

Lets try again the same WGET test.

Sometimes it will fail, sometimes it will work its an gamble.
The same with the ping command it will get slowed or just timeout too.

This is just a bit of the errors that appear during the install.
Here is the Installer_200125-000641_minimal.log (Dedicated Server AX42) > https://gist.github.com/THEPRO69/2cc949e9f3c7c39ca06801f11758c121

Here is the config /etc/sysctl.d/101-sysctl.conf
Centmin Hetzner 101-sysctl - Pastebin.com

How to fix.

1) Format the server, Install Almalinux 9, Disable SELINUX, Restart
2) During the very early of the install if you see the message "installing yum packages..." Press control C to stop the install and at that point the script already edited and created "/etc/sysctl.d/101-sysctl.conf"
3 ) Edit /etc/sysctl.d/101-sysctl.conf and remove everyting except the first line "# centminmod added"
4) Run this command: sysctl --system
5) reboot

6) And then execute the install again and now all packages will install without any problem or timeouts.

Or just create "/etc/sysctl.d/101-sysctl.conf" and on the first line put "# centminmod added" and run the centminmod Script.

I tested this in the 2 dedicated servers I have, and the problem is on both of them.
I tried on a VPS on Hetzner, and I did not have any problems.
This issue seems to be related to the file and its config "/etc/sysctl.d/101-sysctl.conf" I don't know what line it is that is causing this weird issue.
I did not try AlmaLinux 8 or Rocky Linux. I just wanted the AL 9 that I use for all my servers.
I did also try the stable version, and the problem is there too.

I'm pretty sure other people will run into this.

 

Hi, as for my "old" method of disabling SELinux it seems to work but i will follow Centmin Mod method of SELINUX disabling.

Code (Text):

~]# sestatus
SELinux status:                 disabled

~]# getenforce
Disabled

As for the logs i did share the installer minimal log file. (Its full of "Connection timed out")
I will try to run again in an few hours to see if it was SELinux not being disabled correctly but I'm pretty sure that's not the problem because sestatus and getenforce says its disabled using my old method.

 

Code (Text):

Using username "root".
[root@almaLinux9 ~]# yum clean all
26 files removed
[root@almaLinux9 ~]# yum repolist all
repo id                                                                                         repo name                                                                                                     status
appstream                                                                                       AlmaLinux 9 - AppStream                                                                                       enabled
appstream-debuginfo                                                                             AlmaLinux 9 - AppStream - Debug                                                                               disabled
appstream-source                                                                                AlmaLinux 9 - AppStream - Source                                                                              disabled
baseos                                                                                          AlmaLinux 9 - BaseOS                                                                                          enabled
baseos-debuginfo                                                                                AlmaLinux 9 - BaseOS - Debug                                                                                  disabled
baseos-source                                                                                   AlmaLinux 9 - BaseOS - Source                                                                                 disabled
crb                                                                                             AlmaLinux 9 - CRB                                                                                             disabled
crb-debuginfo                                                                                   AlmaLinux 9 - CRB - Debug                                                                                     disabled
crb-source                                                                                      AlmaLinux 9 - CRB - Source                                                                                    disabled
extras                                                                                          AlmaLinux 9 - Extras                                                                                          enabled
extras-debuginfo                                                                                AlmaLinux 9 - Extras - Debug                                                                                  disabled
extras-source                                                                                   AlmaLinux 9 - Extras - Source                                                                                 disabled
highavailability                                                                                AlmaLinux 9 - HighAvailability                                                                                disabled
highavailability-debuginfo                                                                      AlmaLinux 9 - HighAvailability - Debug                                                                        disabled
highavailability-source                                                                         AlmaLinux 9 - HighAvailability - Source                                                                       disabled
nfv                                                                                             AlmaLinux 9 - NFV                                                                                             disabled
nfv-debuginfo                                                                                   AlmaLinux 9 - NFV - Debug                                                                                     disabled
nfv-source                                                                                      AlmaLinux 9 - NFV - Source                                                                                    disabled
plus                                                                                            AlmaLinux 9 - Plus                                                                                            disabled
plus-debuginfo                                                                                  AlmaLinux 9 - Plus - Debug                                                                                    disabled
plus-source                                                                                     AlmaLinux 9 - Plus - Source                                                                                   disabled
resilientstorage                                                                                AlmaLinux 9 - ResilientStorage                                                                                disabled
resilientstorage-debuginfo                                                                      AlmaLinux 9 - ResilientStorage - Debug                                                                        disabled
resilientstorage-source                                                                         AlmaLinux 9 - ResilientStorage - Source                                                                       disabled
rt                                                                                              AlmaLinux 9 - RT                                                                                              disabled
rt-debuginfo                                                                                    AlmaLinux 9 - RT - Debug                                                                                      disabled
rt-source                                                                                       AlmaLinux 9 - RT - Source                                                                                     disabled
sap                                                                                             AlmaLinux 9 - SAP                                                                                             disabled
sap-debuginfo                                                                                   AlmaLinux 9 - SAP - Debug                                                                                     disabled
sap-source                                                                                      AlmaLinux 9 - SAP - Source                                                                                    disabled
saphana                                                                                         AlmaLinux 9 - SAPHANA                                                                                         disabled
saphana-debuginfo                                                                               AlmaLinux 9 - SAPHANA - Debug                                                                                 disabled
saphana-source                                                                                  AlmaLinux 9 - SAPHANA - Source                                                                                disabled

It seems that only this 3 are enabled

Code (Text):

AlmaLinux 9 - AppStream
AlmaLinux 9 - BaseOS
AlmaLinux 9 - Extras

 

This issue only occurs on Dedicated Servers, whereas the Hetzner Cloud VPS works fine, even with the firewall enabled.

However, I haven't tested it with Hetzner's Robot Firewall turned off—I keep it enabled on production servers since it's a reliable feature that has never caused problems.

Regarding the empty 101-sysctl.conf, I use it that way on production servers without noticing any differences or issues.

The solution might be to disable the CSF Firewall entirely or turn off Hetzner's Robot Firewall.

For reference, my production servers run both CSF Firewall and Hetzner's Robot Firewall turned ON with equal/similar rules.

But the real question is why the fix is empty the 101-sysctl.conf at the install.
What does the 101-sysctl.conf has inside to cause some much trouble?

 

I did share this already on this thread.