I installed the zabbix1.8.5 and when I login through web gui and check the host (zabbix server) status showing me the below mentioned error:
Quote: Got empty string from [127.0.0.1]. Assuming that agent dropped connection because of access permissions
i am getting the following error at maillog while i try to enable emailing on Zabbix server
tail /var/log/maillog
May 14 10:03:19 localhost sendmail[21522]: o4H63J8U021522: monitor-xxxxx.com [127.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
the above message is repeated continously!
I've setup vsftpd correctly and it's running fine with local users (in the same LAN). However, when remote users wanna login to the server, it takes more than 1 minute to get in. Users do can login from remote. It just took too long. (It prompted for the username and password very fast.) Since the server is behind a router, I did configure the port forwarding for TCP 20-21. The centos version is 5.3. The vsftpd is v2.0.5.
View 6 Replies View RelatedWhile am updating using yum some error showing ... (am new in the field of cent os , and am doing these all job by ssh )
Dependencies Resolved
Transaction Summary
I installed ntop on our server, after installing it, i ran ntop as a daemon. shortly after we lost the ability to ssh into the server.tried restarting ssh, but it didn't work, so had to restart the entire server.Where should we look to find why ssh suddenly stopped?
the error ssh gave when we try to connect was like: ssh: no route to host what log files should i look at and what should i look for to find the cause of the error?
Tearing my hair out on this one a little bit, having problems sending message from web based PHP form to user inbox.I keep getting: Undelivered Mail Returned to Sender<me@mydomain.co.uk>: Host or domain name not found. Name service error for name=mydomain.co.uk type=A: Host not found.Running these commands:
$ hostname = mydomain.co.uk
$ hostname -f = mydomain.co.uk
$ postconf -n =
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what is this, and more importantly, how do I fix it?
Quote:
Package Arch Version Repository Size
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I am trying to run yum update on my CentOS 5.3 server, 32-bit, but it responds with the following:
Quote:Running rpm_check_debug
ERROR with rpm_check_debug vs depsolve:
memcached is needed by (installed) memcached-selinux-1.2.8-1.el5.i386
Complete (1, [u'Please report this error in [URL]...
I'm trying to connect with my server via telnet, but when i sent the command (telnet xxx.xxx.xxx.xxx Port) doesn't works and shows then follow error: Unable to connect to remote host: Connection refused, It happens with any port. Is strange but my telnet services works (telnet xxx.xxx.xxx.xxx), In addition, i tried with firewall enabled and disabled and the problem still happens. My centOS run on virtualbox.
View 3 Replies View RelatedI installed VSFTPD but when logging ( at command line or browser ) at any user always :
[root@srv vsftpd]# ftp 172.16.0.3
Connected to 172.16.0.3.
220 (vsFTPd 2.0.5)
530 Please login with USER and PASS.
530 Please login with USER and PASS.
KERBEROS_V4 rejected as an authentication type
Name (172.16.0.3:root): system
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I have installed CentOS 5.4 machine named test.example.com (192.168.1.1)File /etc/hosts contains:127.0.0.1 test.example.com test localhost.localdomain localhostI have read that the loopback addres should not be assigned to host name,only to localhost and the host name should be assigned to 192.168.1.1, like this:127.0.0.1 localhost.localdomain localhost192.168.1.1 test.example.com testIs there any reason why it should be one or another way?
View 6 Replies View RelatedI set up a DNS server, and it works fine when being queried from other hosts.But if I query it from localhost (by using nslookup), it reports error:
======================================
** server can't find www.example.com: NXDOMAIN
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On two Centos5 servers, yum gives a segmentation fault error when trying 'yum update' or 'yum check-update' after running 'yum clean' :
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The error is the same for the other computer except while attempting to update the rpmforge repository. Nothing has really changed on the servers in some time and 'yum update' worked fine on each yesterday and I have no idea why they would both suddenly fail!
Many of mails sent from my mail server that are in Queue;The main reason is deffered by domains like yahoo,aol,etc.but there is one more error that i keep getting and that is Host Unknown,Below is an example from mail log,The catch is,test mail sent on the same email id sent from my personal mail from the same server i.e. url was deliveredHowever,another mail containing client information sent from customercare@mycompanysdomain ended up in queue.
There are more examples of the same,around 20 domain have the same problem.
Sep 7 14:33:46 server2 sendmail[24591]: n8793jiC024589: to=<abc@xyz.fi>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=163672, relay=xyz.fi., dsn=5.1.2, stat=Host unknown (Name server: xyz.fi.: host not found)
Sep 7 22:09:42 server2 sendmail[6407]: n87Gdffa006403: to=<abc@def-fgh.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=152474, relay=def-fgh.com., dsn=5.1.2, stat=Host unknown (Name server: def-fgh.com.: host not found)
am running centos5.3 on a virtual machine and was trying to do some basic hardening and part of it i had to modify the pam.d/system-auth file and from then i am getting a fatal error whenever i try to connect via ssh using putty i am not at all able to login the server with any of the accounts even root also.I am scared unknowingly did i lock the system???how to resolve this issue?
View 3 Replies View RelatedI'm trying to mount a Windows Server share from Centos 5.5 (kernel 2.6.18-194.26.1.el5). I've tried two approaches neither of which work.
1). Using Places->Connect To Server. This approach works fine on Ubuntu but not at all for Centos. Using the 'Windows Share' Service type, it allows me to see the remote directory - I can see all of the directories on the server. But as soon as I click one, I get an error 'Couldn't find "smb://blah/blah". Please check the spelling and try again. As I say, this worked fine on ubuntu. Tried loads of options but with no luck. I saw something on the web about leading slashes being a problem.
2). Using Mount . Tried to use mount to mount as a cifs filesystem, as documented on a number of web pages:
mount -t cifs //server/dir -o username=username,password=password /mnt/tmp
This completely hangs the machine.I means completely, no mouse, no nothing. I've seen some references to unstable cifs on the web but I believe that this kernel has the fix for this.
I have some Oracle (Unbreakable|Enterprise) Linux systems, mostly running v5.4. I'd like to migrate them to CentOS 5.4 (or 5.5... I'm not picky about that).Is it as simple as updating the repo files in /etc/yum.repos.d, and issuing 'yum upgrade', or is there further magic involved?
View 1 Replies View RelatedI have a host that is using NIS for user authentication. Both user A and B are valid user. But how to only allow user A login the host via ssh?
View 1 Replies View RelatedI have got an Notebook whose CPU is 64bit.The Notebook has an CentOS installation. Now I want to find out if this CentOS is 32bit or 64bit.How can I check this?
uname -a
gives something with ....i686 i686 i386...."
What does that mean?Does that refer to the hardware or the CentOS OS? An 32bit CentOS can be installed on a 64bit hardware!I am interested in the OS capability not of the hardware!
Does anyone have experience install,configure zabbix on Fedora. I already install using yum but i don't know how to configure. I already install zabbix agent, zabbix server but don't know how to configure.
View 1 Replies View Relatedi ,musing mysql5 at fedora12 i have just installed it but i ,m using mysqladmin -p root password mypassword it says ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'mysqladmin -uroot password 123456' at line 1
View 10 Replies View RelatedI'm trying to install zabbix-proxy with dpkg -i and not to use dbconfig-common, is a remote installation, I tried using expect to ansewer no to the first dbconfig dialog, the one that asks if you want to configure everything with dbconfig or not.
This is the bash code
export DEBIAN_FRONTEND=teletype (or export DEBIAN_FRONTEND=readline)
/usr/bin/expect - << ENDMARK
spawn dpkg -i zabbix-proxy-mysql_1.8.2-1~bpo50+1_i386.deb
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but is not working, same thing if I try with dpkg-reconfigure mysql-server-5.1 and send "new_password"
Is there a way in zabbix to monitor whether a process is running( up/ down)
i am using zabbix 1.8.4
I have install zabbix_agent on zabbix_server, I can connect to the zabbox server from the server itself, but can't connect from other machine.
what are the steps of adding new client, I did following:
1- configure /etc/zabbix/zabbix_agent..conf, add following code...
How can i add the host on to the ZABBIX web interface?
Under Configuration->Hosts I have added the host but I don't see any report, I am no sure if server is able to see agent?
i have installed zabbix successfully. but not able to open in browser
[URL]
got following error:-
Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.3 (CentOS) Server at localhost Port 80
I want to make sure that the user www-data cannot be used to login on my system (Ubuntu Lucid). How can I find out? - is there a command I can run against this user? (traditionally run by Apache daemon)
View 3 Replies View RelatedI just installed slackware on my pc. The installation went fine (I think). When I am trying to turn the computer on, I am asked to type the "host login". As I can remember I didn't write any username, or password. But as it seems, I have to type this in to login. I tried with "root", then this comes up "root@host:^#" if this is right, what should I type here to get further...
View 6 Replies View RelatedI installed the server and client from the repositories. I got version 1.8:
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Got everything running, apparently normally, but then I noticed the GUI Installation tab. This helped me optimize the php.ini file so the pretty front end could be used. I got the step 7 where it says
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I'm trying to create a program that will go through a list (one word at each line) from the file pwdlst.txt and try to log-in with the passwords entered in the file. When the program tries with a password that matches the current one, the program will stop and print out "The password is: %s" % password. This is what I created so far:
Code: Select allimport urllib
import urllib2
import cookielib
[code]...
get the error and print when the log-in attempt is deniedgo through the list (pwdlst.txt) and try each password one at a timestop the program when the password matches
I created some users on my Ubuntu 10.0.4 machine a long time ago (whilst experimenting). Some of these users can login to the system, and others were prevented from login in. I can't remeber which ones can login. I have the following questions:
How do I find out which users may login to the machine? How may I disable an existing user account from login in? How may I re-enable a previously (login) disabled user account so it an login again?