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This forum is about how to administer a Centreon Platform: installation, software upgrades, backups or anything else related to platform operations.

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  • 5,420 Replies
1719 Topics
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dtg-exploit-srvSteward *
asked in Platform
The server returned a "500 Internal Server Error" on Hosts page

Hello the Watch,We have just updated our centreon server and poller (OS alma linux 8.10) from 22.10 to version 24.10.7 and we have some issues now when we try to access the Hosts config pages: “Oops! An Error OccurredThe server returned a "500 Internal Server Error".Something is broken. Please let us know what you were doing when this error occurred. We will fix it as soon as possible. Sorry for any inconvenience caused.”It looks like a PHP error...Otherwise all the services are fine, restarting the collectors show no error.I think I may need to create a new server from scratch, install a fresh centreon and then migrate the configurations… but hopefully there is a better workaround ?Can you please help us with this issue ?Respectfully,

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Cm123Steward ***
asked in Platform
Centreon Central server update.

Hello Guy’sI want to know that is it ok to update my central server as my central server is at 23.10 and all pollers are in 24.10(Total 25 Pollers) active at production environment?Is it ok to update central server now? or keep it as it is? can you please suggest safest way to procced for updating cental server.Thank you

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JoxavySteward *
asked in Platform
Unsure why a poller is down

Hello everyone, i’ve followed the poller installation one by one, and checked the link for troubleshooting why a poller might be doing, which is:My poller is down | Communityand these are the results from following those steps:Check 1: Network connectionsfrom poller netstat -plant | egrep '5556|5669'tcp 0 0 0.0.0.0:5556 0.0.0.0:* LISTEN 6152/perltcp 0 0 10.99.8.214:5556 10.99.8.118:60702 ESTABLISHED 6152/perlfrom central: netstat -plant | egrep '5669|5556'tcp 0 0 0.0.0.0:5669 0.0.0.0:* LISTEN 18458/cbdtcp 0 0 127.0.0.1:46150 127.0.0.1:5669 ESTABLISHED 18446/centenginetcp 0 0 10.99.8.118:60702 10.99.8.214:5556 ESTABLISHED 18510/gorgone-proxytcp 0 0 127.0.0.1:5669 127.0.0.1:46150 ESTABLISHED 18458/cbdfor the firewall i got:systemctl status firewalld:on both poller and central.Check 2: centreon-engine process:the results:system

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Alexandre BelhommeSteward **
asked in Platform
CLAPI - Get Top Counter data

Hello, i wondered if there was a CLAPI query to get the top counter values from a centreon. I am not running the latest version so i’m unsure that it is available in the web API or the CLAPI.Do anyone know what could be used to get this data programatically ?

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speynaudSteward *
asked in Platform
Centreon 21.10 et Nagvis 1.9.x

Bonjour à tous,D’après mes recherches il est possible d’utiliser Nagvis 1.9.x en faisant un lien avec Centreon.J’ai trouvé plusieurs tuto sur le web mais aucun ne ma permis d’arriver au bout.Est ce que quelqu’un aurait un tuto qui fonctionne? Je précise ma configuration :RHEL 8.1Centreon IT 100 v21.10.1 (fonctionnel avec RPM) sans nagiosNagvis 1.9.29 installé simplement ./install.sh aprés téléchargement du paquet tar sur le site (le site nagvis s’ouvre) En fait je souhaite avoir Nagvis pour réutiliser les cartes que j’avais déjà faites avec Eyes Of NetworkMerci d’avance

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xoryaSteward **
asked in Platform
Poller down wont go up ( Tried many fixes)

 Hello everyone Ive tried connecting my poller to the centreon central server and tired debugging and I see nothing wrong on the poller side nor the central server side, ive retsrated cbd, centengine, gorgoned, ive exported and imported config files, ive restarted the services on both vms, etc. I cant seem to figure out what’s wrong now, however i do see this log in the debug of centreon central, something about a key that changed?and Ive tried checking the ip tables and netstat connections etc and the result below is what i got, appearenlty the central is trying to connect to the poller but the connection gets refused or soemthing, and no the firewall isnt issue nor is the SElinux. Update:Ive changed the fingerprint in the hsitory.dsb file from the old one to the new one, now when I run the netstat command the connection is established in the centreon central, but now the poller has the same “TIME_WAIT” thing that i had in the central earlierresult in the central , Im not sure what TI

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a.chambellandSteward *
asked in Platform
Help for install remote connectors

Hello,I’m looking for someone to help me install remote connectors on a centreon centralI try to follow documentation but each time, unable to connect the remote to the central after the installation…Someone available to make it together on Discord or other please ? Very big thanks !

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houndpound21Steward *
asked in Platform
How to use SNMPv3 monitoring plugins in Centreon Open Source (without license)

Hi everyone,I'm using the open source version of Centreon (no license, no commercial subscription) and I would like to monitor equipment like Cisco switches, HP servers, UPS, PDUs, etc. using SNMPv3.I know that with a commercial license, I could simply use the Monitoring Connector Manager to install packs like network-cisco-standard-snmpv3, but in the open source version, only basic modules are available and the rest require a license.That said, I was able to install centreon-pack-operatingsystems-linux-snmpv3 via APT, and it works perfectly for Linux hosts using SNMPv3. So I assume it's technically possible to use SNMPv3 monitoring for other devices as well, but manually, without licensed packs.I’ve already cloned the official centreon-plugins GitHub repo and I can run checks via CLI successfully. How should I configure them properly in the Centreon web interface (host templates, service templates)?This is part of a large-scale migration from SNMPv2 to SNMPv3 across many existing devi

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xoryaSteward **
asked in Platform
Confused About Monitoring Connectors, Plugins, GitHub Repo & Licensing

Hey everyone,I’m setting up Centreon and I’ve hit a point where I’m confused about how Monitoring Connectors, plugins, and the GitHub plugin repo all relate — especially when it comes to licensing and offline environments.Here’s my current situation and questions: After a fresh install of Centreon, I could install some Monitoring Connectors (I think these are the default/free ones). But I also see many others greyed out — I assume those require a license? I understand that Monitoring Connectors (or Plugin Packs?) are templates that help configure services, but I’m not sure how they relate to the actual plugin scripts (like those in /usr/lib/centreon/plugins/). I also don’t really get the relationship with the GitHub repo (https://github.com/centreon/centreon-plugins). Can I just clone that repo and use it without a license? if I clone it will i be able to use all plugins and won’t need to install connectors/packs etc? If I do clone the GitHub repo, should I clone it on the Centra

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ltirand
Centreonian
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AnthonySteward *
asked in Platform
RESTAURATION BACKUP CENTREON

Bonjour, Nous avons fait un backup de notre serveur Centreon avec les paramètres suivant :Jusqu'à la, pas de souci.  Cependant lors de la tentative de restauration sur une autre machine avec configuration identique (même debian / même version de centreon / même paquet d’installation), nous avons une impossibilité de se connecter, pas de message d’erreur.Le pas à pas suivi est présent sous ce lien : https://docs.centreon.com/fr/docs/administration/backup/Nous sollicitons votre aide!Anthony

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Laurent
Centreonian
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AdrienLagunegrandSteward *
asked in Platform
Centreon MAP

Hello,Is so possible to use Centreon MAP with IT100 ? or purchase business edition ?Thanks

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crisantobSteward **
asked in Platform
Monitor a Mailbox

Hello,  Could you please recommend a plugin for Centreon that can monitor a mailbox and alert if emails do not come? Or is there a way for us to implement this? Thank you,Crisanto

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PerBaccoSteward *
asked in Platform
Install the Monitoring Connectors repository for Alma Linux 9

Hi,I have recently installed Centreon 24.10.7 on premise on Alma linux 9.5A temporary 60 days license was provided and installed. On the page: Configuration  >  Connectors  >  Monitoring Connectors the message “No monitoring connectors found” appears.  The online documentation says:install the Monitoring Connectors repository (go to the Centreon support portal for its address) Obviously, without the repository the installation isn’t possible:# dnf install centreon-pack-*Last metadata expiration check: 7:24:42 ago on Wed May 14 06:48:52 2025.No match for argument: centreon-pack-*Error: Unable to find a match: centreon-pack-*  Could you provide me the repository details? Regards,PerBacco 

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benjamingntllSteward *
asked in Platform
Problem 24.10.7 - Web UI

Hello, I'm asking for your help because I recently installed a new Centreon server in version 24.10.7 on a Debian 12 and I'm constantly getting errors for various things that I encounter only in HTTP and never in SSH, in particular for creating a Host. When I want to create one via Web UI and I click on the “Save” button to register my new host, nothing happens and my centreon WEB interface crashes for a few dozen seconds.Another thing is that when I perform various other actions, I constantly get the following messages: “failed to fetch” “Oops, something went wrong” at the bottom of the page. Any idea where this might be coming from?I'm also attaching the source code inspection with Google CHROME to show you the type of error that keeps appearing.Thanks in advance.  

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ponchoh
Centreonian
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raikkonen7Steward **
asked in Platform
How to add my hosts to new host groups?

Hello,I have around 1000 VMs which I added initially into host groups like prod, preprod, uat etc. The VMs are a mix of windows and linux. Now since I will be using snmp templates and some will use linux_snmp and some will use windows_snmp templates, I want to create 2 new host groups - windows and linux. Now I want to add my hosts into these host groups. What would be the easiest way to do it please? via csv import for example. How to add my already added hosts to these new groups without impacting the existing hosts or host groups. For example, I cannot delete and readd all hosts with updated host groups. I dont have autodiscovery license.  

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jbossSteward **
asked in Platform
Can't attach remote poller to central with registerServerTopology.sh

Hello;i just fresh install a server central with the automatic processus “Unattended installation of a central server” version 24.04once installed , i set the https access to the central GUI and i can connect on it with a self certificate. Now i would like to register a remote server with same process install “Unattended installation of a central server” version 24.04”.once installed, when i run /usr/share/centreon/bin/registerServerTopology.sh -u admin -t remote -h ipcentral -n remoteserver1 --insecurei have this issue: 2024-09-04 18:25:46+02:00 - ERROR - ip remoteserver: {"code":500,"message":"Request to the Central's API failed : Recv failure: Connection reset by peer for \"http:\/\/ipcentral\/centreon\/api\/v24.04\/login\"."} could you help me?thank

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Julien RSteward **
asked in Platform
How to avoid to many oradiag files for check centreon_oracle.pl?

Hi, I have a poller with many Oracle databases monitored by Centreon’s plugin centreon_oracle.pl.But I have a lot of trace files in directory “/var/tmp/oradiag_centreon-engine/diag/clients/user_centreon-engine/host_<123456789>_<123>/trace”.This leads my poller to ran out of inodes:Filesystem                                Inodes   IUsed  IFree IUse% Mounted on[...]/dev/mapper/vg0-racine                   1237888 1237888      0  100% /[...] There is a way to avoid that?

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SnarkSteward *
asked in Platform
Centreon24.04 404 on api/latest/platform/installation/status

I made a manual offline installation on a redhat 9 server of centreon 24.04. After correcting some things, I thnik my installation is not the cleanest but should be working. Instead, everytime I go to the centreon login page I have a big centreon logo, a  You need to enable JavaScript to run this app message and if I check the inspect page and the access logs, I have a 404 error on /centreon/api/latest/platform/installation/status, and I cant find this file anywhere??

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Laurent
Centreonian
ensenada
ensenadaSteward ***
asked in Platform
Pdo object is not initialized, contructor was not called

Hello,Im following the migration guide:https://docs.centreon.com/docs/migrate/migrate-from-el-to-debian/#prerequisites After done the steps 4 adn 5 from Step 2 : Synchronize the data, i cant log in the web interface, i got this error Before done this steps i was be able to login with local admin.How can i fix it? Thanks,

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journeytothecenteroftheearthSteward *
asked in Platform
Centreon Update is stuck on "Congratulations, you have successfully upgraded to Centreon version 24."

Hello guys,Everytime I try to update to a newer version of Centreon starting from Centreon 24.04.4 to a newer version, the update gets stuck on "Congratulations, you have successfully upgraded to Centreon version 24.04.11”. The page that it’s stuck onWhat I have tried so far:I try to update to version 24.10 after to see if it resolved the problem (which it didn’t )I checked the storage, there is still plenty.I checked that all the services required were at the right version and started. (but I could have missed one)In the installation process I get prompted those lines :chmod: cannot access '/var/cache/centreon/config/engine/*': No such file or directorychmod: cannot access '/var/cache/centreon/config/broker/*': No such file or directorySo i’m wondering if it could be a rights attribution problem.Also when I click the finish button I get prompted for a quarter of a second the following:The error that gets displayedBut it could be unrelated. Do you guys have any ideas about what could b

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Laurent
Centreonian
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Cm123Steward ***
asked in Platform
Does 24.10 require GLIBC_2.34 ?

Hello , I am upgrading my platform from 23.10 to 24.10. But while upgrading centreon 24.10 need GLIBC_2.34 and upward. So how can we upgrade GLIBC? How can i Proceed further?  Thank You

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Laurent
Centreonian
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mathiasSteward **
asked in Platform
Monitoring UDP port

Hi,Checking TCP is ok, but how do i check an openvpn UDP port?  /usr/lib/centreon/plugins//centreon_protocol_udp.pl  --plugin=apps::protocols::udp::plugin --mode=connection  --hostname=192.168.0.1 --port=1111CRITICAL: Connection failed on port 1111 thanks,Mathias🤔

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Laurent
Centreonian
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Alexis63Steward *
asked in Platform
Remote server running on Central but not displayed running on the Remote Side

Hi,(Sorry in advance for my English) I’m trying to link a Remote Server on a Central both behind a firewall. Everything is Working (i can supervise some equipement on the remote network) but the Poller on the Remote is still displayed as “Central” and not running. On the Central side, everything is working and the Remote is displayed as working and updating. Is this an issue on the Remote ? Thank you in advance for your help.

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sheineckSteward *
asked in Platform
Problem with unattended.sh install 24.10 on AlmaLinux 9.2 ESU (Tuxcare)

The issue is specifically with PHP v8.2 install.  It appears that for Alma v8 it would use the remi repository, but when the OS is v9 it does not use the remi repository.My operating system is AlmaLinux v9.2 ESU (with Tuxcare).   It appears that the unattended.sh script tries to install php 8.2 (required for 24.10) using the command “dnf module install php:8.2”.I have installed PHP 8.2 from the remi repository outside the unattended.sh script, is there an option to the script to skip the php install during the installation process?I have also posted this on the CloudLinux support site to get their take on it and still waiting on their response. ThanksSteve H.

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midwintergatesSteward *
asked in Platform
Centreon can't connect to db removing token

Hi,I have a centreon 24.10.4 environment at work and we currently ran into one issue after migrating an old environment.Everything works fine except we noticed the postfix sends a mail every minute which seems to be a result of centreon-tokens not being able to remove outdated tokens.This is what /var/log/centreon/centreon-tokens.log is saying.#1 {main}  thrown in /usr/share/centreon/www/class/centreonDB.class.php on line 165PHP Fatal error:  Uncaught Exception: SQLSTATE[HY000] [1045] Access denied for user 'centreon'@'localhost' (using password: YES) in /usr/share/centreon/www/class/centreonDB.class.php:165Stack trace:#0 /usr/share/centreon/cron/outdated-token-removal.php(35): CentreonDB->__construct()#1 {main}  thrown in /usr/share/centreon/www/class/centreonDB.class.php on line 165 This is from the postfix logMar 12 09:21:01 centreon postfix/smtp[2613111]: 369C81C0AA0: to=<www-data@centreon.xxx.se>, orig_to=<www-data>, relay=smtp.xxx.se[192.168.x.xxx]:25, delay=0.15,

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