SOLVED The installation process was unable to synchronize cPanel & WHM

X_T_A_N_G_E_N_T · Apr 20, 2017

Here are the troubleshooting steps:

It looks like cPanel has one way to install WHM, and it's to use this command
they have on their site:

Code:

cd /home && curl -o latest -L https://securedownloads.cpanel.net/latest
&& sh latest

[root@************ home]# md5sum ./latest
89335c4149daef89abbbf153b6609d04  ./latest

The command is executed:
After the main script downloads and runs, it checks to make sure it can get to
what it needs to get to its servers and states the connection is successful:

Code:

2017-04-20 10:03:10  948 ( INFO): Validating whether the system can look up
domains...
2017-04-20 10:03:10  960 (DEBUG):  Testing cpanel.net...
2017-04-20 10:03:10  960 (DEBUG):  Testing www.cpanel.net...
2017-04-20 10:03:10  960 (DEBUG):  Testing updates.cpanel.net...
2017-04-20 10:03:10  960 (DEBUG):  Testing httpupdate.cpanel.net...
2017-04-20 10:03:10  960 (DEBUG):  Testing layer2.cpanel.net...
2017-04-20 10:03:10  960 (DEBUG):  Testing layer1.cpanel.net...
2017-04-20 10:03:10  960 (DEBUG):  Testing www.google.com...
2017-04-20 10:03:10  994 ( INFO): The system successfully connected to the
httpupdate.cpanel.net server.

following that it looks like the script doesn't pass web traffic before it
prints out no packages are available:

Code:

[2017-04-20 10:19:15 -0600]  No package automake available.
[2017-04-20 10:19:15 -0600]  No package bind available.
[2017-04-20 10:19:15 -0600]  No package bind-devel available.
[2017-04-20 10:19:15 -0600]  No package bison available.
[2017-04-20 10:19:15 -0600]  No package boost-program-options available.

The following lines are printed:

Code:

^C2017-04-20 10:03:49  921 (DEBUG):  The installation process detected a failed
synchronization. The system will reattempt the synchronization with the
updatenow.static file...
2017-04-20 10:03:49  927 (FATAL): The installation process was unable to
synchronize cPanel & WHM. Verify that your network can connect to
httpupdate.cpanel.net and rerun the installer.
Removing /root/installer.lock.
Signal caught, cleaning up

Based on the packet capture, we can tell what server the installer is attempting
to connect to and curl to that server.

Code:

[root@************ ~]# curl httpupdate128.cpanel.net
<!DOCTYPE html>
<html dir="ltr" lang="en-US">
    <head>
. . . . . . .



10:03:47.200691 IP ************.60588 > httpupdate128.cpanel.net.http:
Flags [.], ack 1411, win 251, options [nop,nop,TS val 62717118 ecr 1463274798],
length 0
10:03:47.227148 IP httpupdate128.cpanel.net.http > ************.60588:
Flags [P.], seq 2261:2266, ack 459, win 243, options [nop,nop,TS val 1463274824
ecr 62717119], length 5

We're more than confirming bidirectional traffic using ping here...

This isn't a matter of our servers or connectivity, but a matter we need to
resolve with cPanel

So far it looks like the script has:

[2017-04-20 10:03:41 -0600] Using mirror '64.50.186.230' for host
'httpupdate.cpanel.net'. It seems to be really glued on this IP at the moment.

I think the script is ignoring the answer file...
[root@************ home]# ping httpupdate.cpanel.net
PING httpupdate.cpanel.net (94.75.231.77) 56(84) bytes of data.

Out of the following:

Code:

;; ANSWER SECTION:
httpupdate.cpanel.net. 17 IN A 70.87.220.252
httpupdate.cpanel.net. 17 IN A 72.29.88.74
httpupdate.cpanel.net. 17 IN A 74.50.120.123
httpupdate.cpanel.net. 17 IN A 83.170.94.2
httpupdate.cpanel.net. 17 IN A 85.13.201.2
httpupdate.cpanel.net. 17 IN A 94.75.231.77
httpupdate.cpanel.net. 17 IN A 204.10.37.146
httpupdate.cpanel.net. 17 IN A 208.43.108.66
httpupdate.cpanel.net. 17 IN A 208.43.129.162
httpupdate.cpanel.net. 17 IN A 208.74.121.39
httpupdate.cpanel.net. 17 IN A 208.78.42.4
httpupdate.cpanel.net. 17 IN A 208.109.109.239
httpupdate.cpanel.net. 17 IN A 209.85.80.214
httpupdate.cpanel.net. 17 IN A 216.38.56.98
httpupdate.cpanel.net. 17 IN A 63.247.66.98
httpupdate.cpanel.net. 17 IN A 64.50.186.230
httpupdate.cpanel.net. 17 IN A 66.23.237.210
httpupdate.cpanel.net. 17 IN A 67.159.2.2
httpupdate.cpanel.net. 17 IN A 67.205.110.4
httpupdate.cpanel.net. 17 IN A 67.222.0.10
httpupdate.cpanel.net. 17 IN A 67.227.128.74
httpupdate.cpanel.net. 17 IN A 69.50.192.73
httpupdate.cpanel.net. 17 IN A 69.72.212.10
httpupdate.cpanel.net. 17 IN A 69.72.212.11
httpupdate.cpanel.net. 17 IN A 69.73.140.17

Let me clarify for the line that states: "answer file... "

I think the script is ignoring the /etc/hosts file entry...
94.75.231.77 httpupdate.cpanel.net
[root@************ home]# ping httpupdate.cpanel.net
PING httpupdate.cpanel.net (94.75.231.77) 56(84) bytes of data.

What I'm trying to do is install WHM/cPanel, but it's failing. (Cloud Linux.)

Code:

Linux ************ 3.10.0-427.36.1.lve1.4.40.el7.x86_64 #1 SMP Thu Mar 9 05:49:24 EST 2017 x86_64 x86_64 x86_64 GNU/Linux

[2017-04-20 12:35:02 -0600]   Using mirror '94.75.231.77' for host 'httpupdate.cpanel.net'.
Result: 2017-04-20 12:35:39  927 (FATAL): The installation process was unable to synchronize cPanel & WHM. Verify that your network can connect to httpupdate.cpanel.net and rerun the installer.

Communication appears to work with this server as well.
[root@************ home]# curl 94.75.231.77
<!DOCTYPE html> etc...

cPanelMichael · Apr 20, 2017

Hello,

Do you notice any additional output in the /var/log/cpanel-install.log regarding the failed installation attempt? Also, since this is CloudLinux, check to see if this KB article on their website helps (I've seen it fix a similar problem in the past):

My trial expired, and I brought a new license. How do I install it on the server – CloudLinux KnowledgeBase

Thank you.

X_T_A_N_G_E_N_T · Apr 20, 2017

We can tell which command did something

The output from rhnreg_ks would indicate a failure to execute properly.

however the clnreg_ks command appears to work properly:
[root@************ home]# clnreg_ks --force
Profilename: ************
<this sat for a few minutes.>

Once it was done, I re-ran just the "sh latest" command and it appears to be working so far.

[2017-04-20 12:47:43 -0600] Using mirror '94.75.231.77' for host 'httpupdate.cpanel.net'.

The strange thing is, this is a new install with a licensed IP address... I can't say for sure that clnreg_ks would be there without the initial install?

Hopefully adding a md5 sum doesn't mess people up in the future if they are checking and their version is different.
md5sum /usr/sbin/clnreg_ks
517656b749bc426059b71ad8e03c6f93 /usr/sbin/clnreg_ks

cPanelMichael · Apr 20, 2017

X_T_A_N_G_E_N_T said:
however the clnreg_ks command appears to work properly:
[root@************ home]# clnreg_ks --force
Profilename: ************
<this sat for a few minutes.>

Once it was done, I re-ran just the "sh latest" command and it appears to be working so far.

[2017-04-20 12:47:43 -0600] Using mirror '94.75.231.77' for host 'httpupdate.cpanel.net'.

Hello,

I'm happy to see that helped. Let us know if you encounter any additional issues with the installation.

Thank you.

X_T_A_N_G_E_N_T · Apr 20, 2017

on the other hosts: I'm using is Install processes:
1) Run the install command. "cd /home && curl -o latest -L https://securedownloads.cpanel.net/latest && sh latest"
2) Wait for the failure, and run the command "clnreg_ks --force", this takes less than two minutes.
3) Then run the command: "sh latest"

I'll post if it's successful when "I'm done drinking my coffee."

X_T_A_N_G_E_N_T · Apr 20, 2017

The installation was successful.

cPanelMichael · Apr 20, 2017

I'm happy to see it worked well. Thank you for updating us with the outcome.

amin alnasra · Nov 14, 2019

X_T_A_N_G_E_N_T said:
on the other hosts: I'm using is Install processes:
1) Run the install command. "cd /home && curl -o latest -L https://securedownloads.cpanel.net/latest && sh latest"
2) Wait for the failure, and run the command "clnreg_ks --force", this takes less than two minutes.
3) Then run the command: "sh latest"

I'll post if it's successful when "I'm done drinking my coffee."

thank you this work for me .
cloudlinux 7

andersenchong · Oct 26, 2021

Good day, I have the same issue, then when I key in " clnreg_ks --force"

SSH give me the result as below,

[root@my1 home]# clnreg_ks --force
-bash: clnreg_ks: command not found

quietFinn · Oct 26, 2021

andersenchong said:
Good day, I have the same issue, then when I key in " clnreg_ks --force"

SSH give me the result as below,

[root@my1 home]# clnreg_ks --force
-bash: clnreg_ks: command not found

Are you using CloudLinux?
If not that command does not exist.

cPanelAnthony · Oct 26, 2021

andersenchong said:
Good day, I have the same issue, then when I key in " clnreg_ks --force"

SSH give me the result as below,

[root@my1 home]# clnreg_ks --force
-bash: clnreg_ks: command not found

Do you see any errors in the cPanel install log?

The cPanel & WHM Log Files | cPanel & WHM Documentation

This document describes the location of all of the log files in cPanel & WHM, Webmail, and MySQL®. This document also provides examples of each log file.

docs.cpanel.net

andersenchong · Oct 27, 2021

I had solve it yesterday.

I have these error I mention with install WHM at Centos 8, it failed for 3 times installation. but 4th times, I tried on Centos 7, it done perfectly. it look like at this moment not compatible to Centos 8

Thread starter	Similar threads	Forum	Replies	Date
M	CentOS 8 installation failed	Operating Systems	6	Feb 8, 2021
B	perl-DBI package is required for installation but is not found	Operating Systems	3	May 23, 2019
G	Perl module installation error (FFMPEG)	Operating Systems	2	Apr 5, 2017
G	Softaculous Installation impossible when software requires a PHP extension	Operating Systems	2	Mar 30, 2017
M	ClamAV installation is OUTDATED! (but not?)	Operating Systems	1	Oct 6, 2016

Search

Search

SOLVED The installation process was unable to synchronize cPanel & WHM

X_T_A_N_G_E_N_T

Member

cPanelMichael

Administrator

X_T_A_N_G_E_N_T

Member

cPanelMichael

Administrator

X_T_A_N_G_E_N_T

Member

X_T_A_N_G_E_N_T

Member

cPanelMichael

Administrator

amin alnasra

Member

andersenchong

Registered

quietFinn

Well-Known Member

cPanelAnthony

Administrator

The cPanel & WHM Log Files | cPanel & WHM Documentation

andersenchong

Registered