How to clear message archive on ejabberd server? (I am the server admin) - ejabberd

How do I clear all message archives on a fresh ejabberd installation? I accidentally enabled mod_mam and set it to default: always, but now I'm willing to delete message archives (mod_mam is already set to "never")
Tried nothing

How do I clear all message archives on a fresh ejabberd installation?
See:
$ ejabberdctl help delete_old_mam_messages
Command Name: delete_old_mam_messages
Arguments: type::binary
days::integer
Returns: res::rescode
Tags: purge
Description: Delete MAM messages older than DAYS
Valid message TYPEs: "chat", "groupchat", "all".
$ ejabberdctl delete_old_mam_messages all 0
$

Related

Report generating test failed

I've been trying to make scheduled reports with zabbix 5.4 but i keen getting the following error when i try to test:
Cannot fetch data: chrome failed to start:
Sorry, home directories outside of /home are not currently supported.
See https://forum.snapcraft.io/t/11209 for details.
.
I don't know where my errors lay. i installed google chrome and i followed all the instruction and created /var/lib/zabbix/ also chown zabbix:zabbix /var/lib/zabbix/ chmod 755 /var/lib/zabbix
but nothing .please help me i you know my error
I forgot to create a Zabbix user with a directory, that's why I got this kind of error.
addgroup --system --quiet zabbix
adduser --quiet --system --disabled-login --ingroup zabbix --home /var/lib/zabbix --no-create-home zabbix

Zabbix Server crash. No connection to mysql, no log files and no system process

our Zabbix Server is running (service zabbix-server start: Job is already running: zabbix-server) and our MySQL Database is running, too.
But the dashboard of the Zabbix Server gives the following information:
"Zabbix Server is not running".
Furthermore there is no Zabbix-server process when I check the processes in the server machine with "ps aux | grep zabbix".
Moreover there a no log files.
Last day I edited the zabbix-server.conf and changed the "MaxHousekeeperDelete" from "500" to "200".
Note: This command isn´t working when in the init.d folder: "./zabbix-server -c /etc/zabbix/zabbix_server.conf"
Can someone help?
King regards :-)
Zabbix Version: 3.2
SYSTEM: Ubuntu 14.04.5 LTS (GNU/Linux 3.19.0-69-generic x86_64)
Check if there is a .pid file for zabbix on the system and delete it.
Then try to start the server again.
This should be a comment but don't have enough rep to do so.
EDIT:
Can you ensure the nscd is running with ps aux| grep nscd? If not install it with sudo apt-get install nscd
EDIT2:
Also can you please ensure that you have set START=yes in /ets/default/zabbix-server

How to clean up bad mysql and mariadb installation and install fresh mariadb on CentOS7?

I have a fresh install of CentOS7 on ovh.com VPS. It comes with MariaDB support by default, but I run these commands, as I wanted to use MySQL:
rpm -Uvh http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm
Retrieving httpd://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm
warning: /var/tmp/rpm-tmp.eke8Kn: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
yum install mysql-server
systemctl start mysqld
After that I tried entering:
/usr/bin/mysql_secure_installation
But this part did not work. I tried pressing Enter, entering root password, and entering new password (created for this), and none of these actions worked.
Error: Access denied for user 'root#localhost' *(using password: YES)
I run:
yum remove mysql
and it kind of went through, but I am not sure.
I then tried installing MariaDB with the following actions:
1) I added the following to /etc/yum.repos.d/MariaDB.repo:
# MariaDB 10.1 CentOS repository list - created 2015-10-29 18:46 UTC
# http://mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
2) I then run:
yum install MariaDB-server MariaDB-client
The last two are based on their website. MariaDB does not seem to be working or be installed.
I would like to reverse all these actions, come back to 0, and just install the newest version of MariaDB. Can somebody guide me through this, and tell me what to do. I am new to Linux. I read quite a lot of books, recently, but on this I am just stuck...
Thanks!
This is solved now. I was using "e17" instead of "el7".
Thanks.

Ejabberd sbin/ejabberdctl start(No such file or directory)

When i was installing Ejabberd, it gave an error saying it wasnt installed successfully. But then i have the folder my-ejabberd with all the folders in it.
I am not sure if thats 100% installed, but when i try to start up the server, with the command line sbin/ejabberdctl start, it says No such file or directory. I am running on Mac OS 10.8.5.
Not sure what the problem is. Any Ideas?
Edit
This is the error from Terminal
bin/ejabberdctl: line 24: getent: command not found
/Users/clark/my-ejabberd/bin/erl: line 35: /Applications/my-ejabberd/bin/erlexec: No such file or directory
Edit:
If you have installed the ejabberd with source code then ejabberdctl will be sbin folder. If installed from source code, follow this:
$ cd /path/to/my-ejabberd
$ sbin/ejabberdctl start
$ sbin/ejabberdctl status
The node ejabberd#localhost is started with status: started
ejabberd 15.06.21 is running in that node
If you have installed with binary installer, then you will see the ejabberdctl in bin folder. And also you see start, stop and some other commands. If you did this, then follow
$ cd /path/to/my-ejabberd
$ cd bin
$ ./ejabberdctl start
$ ./ejabberdctl status
The node ejabberd#localhost is started with status: started
ejabberd 15.06.21 is running in that node
If you see the node is starting, then the ejabberd is running successfully. If you want you can check http://localhost:5280/admin for the ejabberd admin panel interface. To access this admin panel you need to register a user and give admin access in the ejabberd configuration file as:
// If installed from source code
$ sbin/ejabberdctl register username localhost password
// If installed from binary installer
$ ./ejabberdctl register username localhost password
Then open the ejabberd configuration file (ejabberd.yml) and add username under the admin as:
acl:
admin:
- "username": "localhost"
Now restart the server or stop and start the server and open the admin panel. Give username and password then you can access the admin panel.
In my particular case installing with .dmg i found using find / -name ejabberdctl in terminal and result /Applications/ejabberd.xx.x/bin/ejabberdctl

Zabbix server is not running: the information displayed may not be current

So all of a sudden, after a week of using it, I get an error message on my zabbix server gui (http://localhost/zabbix/.)
The error says: Zabbix server is not running: the information displayed may not be current.
Any idea why is this happening ll of a sudden and out of the blue? I restarted the machine - which should automatically restore the zabbix server upon startup - but it's still not running.
I also researched for a startup or restart command but true to form with zabbix helpful, clear documentation is non-existent.
EDIT:
Some more info:
MySQL is running normally. I'm able to select, insert into, whatever I want.
Doing /etc/init.d/zabbix-server status results in * zabbix_server is not running
The last entry in zabbix_server.log is Zabbix Server stopped. Zabbix 2.2.9 (revision 52686).
Doing sudo /etc/init.d/zabbix-server start results in * Starting Zabbix server zabbix_server but the status is still not running and the log file doesn't have any new entries.
just get into the zabbix.conf.php
>$sudo vim /etc/zabbix/web/zabbix.conf.php
>$ZBX_SERVER = '**your zabbix ip address or DNS name**';
>$ZBX_SERVER_PORT = '10051';
>$ZBX_SERVER_NAME = '**your zabbix hostname**';
just change the ip address you can resolve the error
Zabbix server is not running: the information displayed may not be current
After that restart the zabbix server
>$sudo service zabbix-server restart
To verify go to Dashboard Administration -> queue there you see data
i resolved my error like this works fine for me.
To solve the problem zabbix server is not running you have to :
First - Check that all of the database parameters in zabbix.conf.php ( /etc/zabbix/web/zabbix.conf.php) and zabbix_server.conf ( /etc/zabbix/zabbix_server.conf) to be the same. Including:
• DBHost
• DBName
• DBUser
• DBPassword
Second- Change SElinux parameters:
#setsebool -P httpd_can_network_connect on
#setsebool -P httpd_can_connect_zabbix 1
#setsebool -P zabbix_can_network 1
After all, restart all services:
#service zabbix-server restart
#service httpd restart
worth a try.
Edit this file: sudo nano /etc/default/zabbix-server
Adjust the START property to yes:
START=yes
Then try to run Zabbix again: sudo service zabbix-server start
This may happen because of the old and new IP address
I have faced same issue which was solve by below method:
vim /etc/zabbix/web/zabbix.conf.php
$ZBX_SERVER = new ip address
then restart zabbix server
I was using a special character in my DB password - wrapping the DBPassword option in /etc/zabbix/zabbix_server.conf and doing sudo service zabbix-server restart got me back up and running.
Not Working
DBPassword=MyString?
Working
DBPassword='MyString?'
Solution might be this simple:
sudo su
nano /etc/zabbix/zabbix-server.conf
Remove "#" in front of DBPassword=YourPassword (will change from blue to grey)
Ctrl x (Y to save and press enter to exit)
service zabbix-server restart
Now you can refresh your browser running ZABBIX. If not, you will have to do the same steps for CacheSize=32M
You do not have to change anything in /etc/zabbix/web/zabbix.conf.php (localhost is fine)
When editing anything, remember "#" in front of line means invisible to linux.
As Zabbix Senior Instructor and Consultant Hernandes Martins says in his "Zabbix server is not running what to do?" blog post:
This is the first step that should be checked regardless of the situation, always view the logs, from the moment the error message appeared in the zabbix web interface always view the log.
By following his advice I could be able to identify the cause of the issue with my Zabbix server, and then apply the solution related to the specific problem.
In my case, as I've commented in the page:
The problem in my server was of "4. Resource Allocation Issues". Just like you wrote above, Zabbix was showing out of memory errors on the log when trying to start the server.
After increasing the value of parameter CacheSize I tried to restart the service, but it didn't respond. So, I ended up restarting the whole machine. Fortunately, in the end it resolved the problem for good.
So, take a look at the log with command tail -f /var/log/zabbix/zabbix_server.log on the terminal/prompt, watch for any errors, and tackle the problem according to what it makes sense for your particular case.
Looks like the problem was that I created a Database monitoring Item programmatically and it triggered a bug that caused the server to shutdown.
Once I deleted the item the server came back up, and creating subsequent Items didn't kill it.
The deadly Item had a value_type of Numeric unsigned, -1 programmatically, while the newly created Items have a value_type of float, which is 0 programmatically.
The whole thing has a voodoo element to it but it did solve my problem.
Maybe is configuration issue
nano /etc/zabbix/zabbix_server.conf
DBHost=localhost
DBName=zabbix_db
DBUser=zabbix_user
DBPassword=XXXXXXX
works for me on Zabbix 3.0 Centos 7
The zabbix-server daemon doesn't seem to like passwords with special characters in them. Unsure whether quotes would work in the configuration I just removed special characters from the database password, updated the configuration files and restarted the daemon.
Configuration parsing errors don't show up in logs for some reason.
Install nmap (( # yum/apt-get install nmap ))tool and check to find out which port the zabbix is listenning to?(( # nmap -sT -p1-65535 localhost )) 10050 or 10051?
The result should be somthing like this:
Starting Nmap 6.40 ( http://nmap.org ) at 2016-11-01 22:54 IRST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00032s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 65530 closed ports
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
80/tcp open http
3306/tcp open mysql
10050/tcp open unknown <--- In my case this is it
Then open /etc/zabbix/web/zabbix.conf.php and check the line starting with: $ZBX_SERVER_PORT , it's value should be the same number you saw in the nmap scan result. Change it and restart zabbix-server and httpd and you are good to go!
There maybe IP address conflict, try host 'Zabbix server'
On RHEL/CentOS/OEL 6
Check that the firewall is allowing connection to Zabbix Server port which is 10051, as a user with root priv:
vi /etc/sysconfig/iptables
and add the following lines
-A INPUT -m state --state NEW -m tcp -p tcp --dport 10051 -j ACCEPT
restart iptables
# service iptables restart
If you have disabled IPV6, you need to also edit the hosts file and remove IPV6 line for "localhost"
# vi /etc/hosts
remove or comment out "#" the ipv6 line for localhost
::1 localhost6.localdomain6 localhost6
restart the zabbix-server and check if the error message is gone.
I was in the same trouble.
For my case, that was a conflict between /etc/zabbix/zabbix_agentd.conf and zabbix_server.conf parameters.
I adjusted
"DBHost=localhost",
"DBName=zabbix",
"DBUser=zabbix",
"DBPassword=******",
"DebugLevel=3"
"ListenPort".
If you run the default installation, you should keep ListenPort=10051 for the server and 10050 for the agent.
Cheers!
In my case it happens when introducing host with templates, graphs,trigger etc, the server falls.
The problem was that by default the cache is at 128k and you have to change it.
sudo nano /etc/zabbix/zabbix-server.conf
Uncheck # Sizecache and add 32M for example.
Cachesize=32M
restart service and voila!! server working
service zabbix-server start
My problem was caused by having external ip in $ZBX_SERVER setting.
I changed it to localhost instead so that ip was resolved internally,
$sudo nano /etc/zabbix/web/zabbix.conf.php
Changed
$ZBX_SERVER = 'external ip was written here';
to
$ZBX_SERVER = 'localhost';
then
$sudo service zabbix-server restart
Zabbix 3.4 on Ubuntu 14.04.3 LTS
I had the same issue.
I forgotten selinux conf, not all is ok:
setsebool -P httpd_can_connect_zabbix on
In my case, this occurred because the password in the server config file was commented out.
Open the server config file: # sudo vim /etc/zabbix/zabbix-server.conf
Scroll down to db user and below there will be the password with a # commenting out. Remove the hash and insert your DB password.
In my case i had to disable Linux SE
[root#webserverlocaldomain /]# setenforce 0
Disable Firewall
[root#webserverlocaldomain /]# systemctl stop firewalld
Edit config file uncommenting#
[root#webserverlocaldomain /]# vi /etc/zabbix/zabbix_server.conf
ListenPort=10051
DBHost=localhost
DBPassword=password
Then restart the services
[root#webserverlocaldomain /]# systemctl restart zabbix-server zabbix-agent httpd
#getsebool -a
//httpd_can_network_connect off
#setsebool httpd_can_network_connect on
#getsebool httpd_can_network_connect
#service zabbix-server restart
in my case after installing zabbix from sources (removed zabbix 4.0 because upgrading to 4.2 wasn't possible via apt on a Raspbian GNU/Linux 9.4 stretch) it loaded the config from /usr/local/etc/zabbix_server.conf instead from /etc/zabbix/zabbix_server.conf
After deleting /usr/local/etc/zabbix_server.conf and creating a symlink pointing to the correct config file in /etc/zabbix/zabbix_server.conf it started to work
I solved this problem on Ubuntu 18.04 by uninstalling Zabbix and reinstalling it again from scratch.
The initial installation didn't work because I had followed old posts/guides/tutorials, even from Zabbix documentation itself, so these might probably be outdated. So, the trick was to find and follow the most updated guide to Zabbix installation from its docs.
Here are the two links I followed for uninstalling and reinstalling Zabbix:
How to uninstall Zabbix: https://www.quora.com/How-do-I-uninstall-Zabbix-server-agent-in-Ubuntu
How to (properly) install Zabbix: https://www.zabbix.com/download?zabbix=4.0&os_distribution=ubuntu&os_version=18.04_bionic&db=postgresql
When installing Zabbix from the link above, your choosen Zabbix Version, OS Distribution, OS Version or Database may be different from the ones I've selected, but following the instructions on this page will probably be also the right way for you to install your chosen Zabbix configuration without getting errors post installation.
Never had the problem until it suddenly appeared once, for me, the solution was to add (uncomment) the following line in /etc/zabbix/zabbix_server.conf
ListenIP=0.0.0.0
i had similar problem and my gui reported problem with cache, i change it zabbix-server.conf to 32M and now is ok, zabbix is an intelligent tool, please if it possible check problems in gui first. I had to much hosts ... for default cache.