Failed to send Prolog <HTTP Status Code #503>

Question

Hi all, I am a newbie of Linux and OCS inventory. I have installed OCS server in my CentOS 8 and I can login to the admin portal but my PC information cannot send to my CentOS 8 OCS server.

can anyone help me? Thank you very much.
Here is my PC ocsinventory.ini;

[OCS Inventory Agent]

ComProvider=ComHTTP.dll

Debug=1

Local=

NoSoftware=0

HKCU=0

NoTAG=0

IpDisc=

[HTTP]

Server=http://10.106.64.63/ocsreports

SSL=0

CaBundle=cacert.pem

AuthRequired=0

User=

Pwd=

ProxyType=1

Proxy=mycompanyproxyserver

ProxyPort=8080

ProxyAuthRequired=0

ProxyUser=

ProxyPwd=

[OCS Inventory Service]

TTO_WAIT=22860

INVENTORY_ON_STARTUP=0

Here is my PC Agent log;

Starting OCS Inventory Agent on Monday, December 14, 2020 15:04:48.

AGENT => Running OCS Inventory Agent Version 2.8.0.0

AGENT => Using OCS Inventory FrameWork Version 2.8.0.0

AGENT => Loading plug-in(s)

DLL PLUGIN => Searching for Plug-in DLL(s) in folder <C:\Program Files\OCS Inventory Agent\plugins>

DLL PLUGIN => 0 DLL Plug-in(s) successfully loaded on 0 DLL(s) found

AGENT => Using network connection with Communication Server

COM PROVIDER => Loading Communication Provider <C:\Program Files\OCS Inventory Agent\ComHTTP.dll>

AGENT => Using Communication Provider <OCS Inventory cURL Communication Provider> Version <2.8.0.0>

AGENT => Sending Prolog

DID_CHECK => Read DeviceID <NHK-NB-N3159-05-2020-11-09-10-11-06> and MACs <00:05:9A:3C:7A:0000:50:56:C0:00:0144:85:00:3B:45:B050:7B:9D:CE:2D:1200:50:56:C0:00:08> in file <ocsinventory.dat>

COM SERVER => Initializing cURL library for sendRequest

COM SERVER => Using cURL without server authentication

COM SERVER => Using cURL HTTP type proxy <mycompanyproxyserver:8080>

COM SERVER => Using cURL proxy without authentication

COM SERVER => Disabling cURL SSL server validation support

COM SERVER => Sending HTTP Post request to URL <http://10.106.64.63/ocsreports>

COM SERVER => HTTP Post response received <HTTP Status Code #503>

COM SERVER => Cleaning cURL library

ERROR *** AGENT => Failed to send Prolog <HTTP Status Code #503>

AGENT => Unloading communication provider

AGENT => Unloading plug-in(s)

AGENT => Execution duration: 00:01:26.

Answer 1

HI,

This url "Server=http://10.106.64.63/ocsreports" is not correct. You must have Server=http://10.106.64.63/ocsinventory

Stop ocsservice, make the change, save and restart ocsservice.

Inventory is sent to the server.

Have fun with ocs.

Regards

Frank

Answer 2

Kenneth,

Hi Frank, I tried your suggestion, but fail to send the prolog also. Please find more information of my OCS setting.

Current admin portal address is : http://10.106.64.63/ocsreports/

Current ocs folder in CentOS 8 location;

\usr\share\ocsinventory-reports\ocsreports

======= ocsinventory.ini ========

updated to Server=http://10.106.64.63/ocsinventory

======== Agent log file =========

Starting OCS Inventory Agent on Thursday, December 17, 2020 10:22:43.

AGENT => Running OCS Inventory Agent Version 2.8.0.0

AGENT => Using OCS Inventory FrameWork Version 2.8.0.0

AGENT => Loading plug-in(s)

DLL PLUGIN => Searching for Plug-in DLL(s) in folder <C:\Program Files\OCS Inventory Agent\plugins>

DLL PLUGIN => 0 DLL Plug-in(s) successfully loaded on 0 DLL(s) found

AGENT => Using network connection with Communication Server

COM PROVIDER => Loading Communication Provider <C:\Program Files\OCS Inventory Agent\ComHTTP.dll>

AGENT => Using Communication Provider <OCS Inventory cURL Communication Provider> Version <2.8.0.0>

AGENT => Sending Prolog

DID_CHECK => Read DeviceID <NHK-NB-N3159-05-2020-11-09-10-11-06> and MACs <00:05:9A:3C:7A:0000:50:56:C0:00:0144:85:00:3B:45:B050:7B:9D:CE:2D:1200:50:56:C0:00:08> in file <ocsinventory.dat>

COM SERVER => Initializing cURL library for sendRequest

COM SERVER => Using cURL without server authentication

COM SERVER => Using cURL HTTP type proxy <jp.proxy.nikon.co.jp:8080>

COM SERVER => Using cURL proxy without authentication

COM SERVER => Disabling cURL SSL server validation support

COM SERVER => Sending HTTP Post request to URL <http://10.106.64.63/ocsinventory>

COM SERVER => HTTP Post response received <HTTP Status Code #503>

COM SERVER => Cleaning cURL library

ERROR *** AGENT => Failed to send Prolog <HTTP Status Code #503>

AGENT => Unloading communication provider

AGENT => Unloading plug-in(s)

AGENT => Execution duration: 00:01:25.

Answer 3

Hi,

Because this is the correct url the inventory is sent to the server.

error 503 is a server error. Look apache error file (/var/log/httpd/error_log) to find he error. If not set, set OCS_DBI_PRINT_ERROR to 1 in /etc/httpd/conf.d/z-ocsinventory-server.conf file. Save. Restart apache. Launch an inventory.

Answer 4

Hi Frank,

Due to my CentOS is a VM guest, I don't know how to copy those text to my window PC and post it in here. So, please reference the log via the URL image as below.

http://ask.ocsinventory-ng.org/?qa=blob&qa_blobid=921943569809256152

Answer 5

Have you set a firewall ? If yes, verify that http protocol and port 80 are available.

Regards

Frank

Answer 6

Hi Frank, Happy new year.

Please see below. when i type --list-ports, there is no port to show. But the service was already unblocked. Thanks.

[root@localhost ocsreports]# firewall-cmd --list-ports

[root@localhost ocsreports]# firewall-cmd --list-service
cockpit dhcpv6-client http https ssh

Answer 7

Hi Kenneth

Happy new year !

Can you access with your browser to http://10.106.64.63/ocsinventory? The return must be error 400.