Problem Regarding Vsftp And /var/log/message !!

Hi,

Please view this log below. Can you tell me the reason why I can not ping to server (server hang, or network services down, ...)

Thank you.

Code:

[root@mediaserver ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5.7 (Tikanga)
[root@mediaserver ~]# uname -a
Linux mediaserver 2.6.18-274.el5 #1 SMP Fri Jul 8 17:36:59 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
[root@mediaserver ~]#

log file: https://onedrive.live.com/redir?resi...int=file%2ctxt

At May 20 10:26:11, I reset server.

Hi,

Apologies if this is in the wrong forum, wasn't sure which was most appropriate...

I've built a Redhat 7 VM from an ISO and I've carried out various configuration on it and for some reason when I now run ip commands (for examnple 'ip addr show') I no longer get any output on screen.

Example...
[root@rhel-7-xx2 ~]# ip addr show
[root@rhel-7-xx2 ~]#

Version I'm using is:
Red Hat Enterprise Linux Server release 7.0 (Maipo)

I built another server and had the same problem and managed to fix it by yum updating all packages so it looks like a package needs to be updated but not sure which one.

If I pipe the output to a text file I can see the output okay in the file.

I have a ticket open with Redhat but it's taking a while to troubleshoot with them so thought I'd see if anyone else had seen this in the meantime...

Thanks
James

I have installed vsftp to the server , the status is running now , but when use the command "ftp localhost" , it pops the "421 Service not available." , would advise what is wrong ? thanks

bash-3.2# /etc/rc.d/init.d/vsftpd status
vsftpd (pid 580) is running...
bash-3.2# ps -ef |grep vsftpd
root 580 1 0 15:44 ? 00:00:00 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf
root 607 467 0 15:45 pts/0 00:00:00 grep vsftpd
bash-3.2# ftp localhost
Connected to localhost (127.0.0.1).
421 Service not available.

Hi all

This is bothering me too much, please tell me how to change IP address of remote machine while using ssh successfully.

I follow these steps:
1. connect to remote server using 'ssh root@server'
2. Edit '/etc/sysconfig/network-scripts/ifcfg-eth0' file
3. issue 'service network restart' command... (at this point ssh connection gets hanged)
4. Break from hanged ssh connection (<ENTER>~.)
5. Wait for some time to let service restart
6. Then finally, ssh with new ip address.

All is fine, but last time, i did something wrong while assigning new IP address, and after service restart, remote server didn't get new ip address - and now i cant connect to remote server.

Fortunately, i had a friend there, who helped me correct the problem so that i can connect again.

But what to do when there is no one to help? Is there other way i should approach this problem?

Thanks

Hi all

I am trying out this dhcp server setup on opensuse 12.1 but it does not seem to be working.

I have eth0 configured to be 192.168.10.1 in a /24 network.

I want to hand out the rest of the address in the same subnet as dhcp addresses. (So everything from 10.2 to 10.255). The default gw is defined as 192.168.10.1, and routing table looks correct. and I only have eth0.


When I start the dhcp, and connect it to the client machine, I see nothing on the wireshark trace. no DHCP discovery or ack messages. And the client machine just keeps trying boot from the network via the network interface. I know I got the right interface (there were blinky options in the bios that lets you identify the correct interface) and the cable is not a problem. (If the cable were a problem the client boot message would say "media fault ... please check media...") instead.

Here is my dhcpd.conf file. I went through man dhcpd already, and cleaned out everything that I apparently don't need. (The original file was copied from a more complicated setup that had multiple subnets and dhcp relays.)

Code:

###################simplfied 
linux-kzy1:/var/lib/dhcp/db # cat /etc/dhcpd.conf
authoritative;

ddns-update-style none;
ddns-updates off;

#Information about the host
subnet 192.168.10.0 netmask 255.255.255.0 {
  max-lease-time 600;
  default-lease-time 600;
  range 192.168.10.2 192.168.10.255;
}

group esx_gep{
  filename "pxelinux.0";
  next-server 192.168.10.1; 
  host testserver1 {hardware ethernet a0:d3:c1:f7:f2:64;}
}

this is what /var/log/message and /var/log/rc.dhcpd.log says:
Code:

**************var log message
Mar 19 18:42:17 linux-kzy1 dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Mar 19 18:42:17 linux-kzy1 dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 group decls to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 deleted host decls to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 new dynamic host decls to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 leases to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Listening on LPF/eth0/84:8f:69:cf:7c:41/192.168.10.0/24
Mar 19 18:42:17 linux-kzy1 dhcpd: Sending on   LPF/eth0/84:8f:69:cf:7c:41/192.168.10.0/24
Mar 19 18:42:17 linux-kzy1 dhcpd: Sending on   Socket/fallback/fallback-net
Mar 19 18:42:17 linux-kzy1 dhcpd[12233]: Starting ISC DHCPv4 4.x Server [chroot]..done
linux-kzy1:/home/test/Documents #


*****************var log rc.dhcpd.log
Mar 19 18:42:17 linux-kzy1 dhcpd: Internet Systems Consortium DHCP Server 4.2.2
Mar 19 18:42:17 linux-kzy1 dhcpd: Copyright 2004-2011 Internet Systems Consortium.
Mar 19 18:42:17 linux-kzy1 dhcpd: All rights reserved.
Mar 19 18:42:17 linux-kzy1 dhcpd: For info, please visit https://www.isc.org/software/dhcp/
Mar 19 18:42:17 linux-kzy1 dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 group decls to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 deleted host decls to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 new dynamic host decls to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Wrote 0 leases to leases file.
Mar 19 18:42:17 linux-kzy1 dhcpd: Listening on LPF/eth0/84:8f:69:cf:7c:41/192.168.10.0/24
Mar 19 18:42:17 linux-kzy1 dhcpd: Sending on   LPF/eth0/84:8f:69:cf:7c:41/192.168.10.0/24
Mar 19 18:42:17 linux-kzy1 dhcpd: Sending on   Socket/fallback/fallback-net
Mar 19 18:42:17 linux-kzy1 dhcpd[12233]: Starting ISC DHCPv4 4.x Server [chroot]..done
linux-kzy1:/home/test/Documents #

not very interesting stuff or useful, but I found some other messages that is very interesting:

Code:

**********
#no free lease

linux-kzy1:/home/test/Documents # cat /var/log/messages | grep "free lease"
Mar 19 15:53:59 linux-kzy1 dhcpd: DHCPDISCOVER from a0:d3:c1:f7:f2:64 via eth0: network 192.168.10.0/24: no free leases
Mar 19 15:54:03 linux-kzy1 dhcpd: DHCPDISCOVER from a0:d3:c1:f7:f2:64 via eth0: network 192.168.10.0/24: no free leases
Mar 19 15:54:11 linux-kzy1 dhcpd: DHCPDISCOVER from a0:d3:c1:f7:f2:64 via eth0: network 192.168.10.0/24: no free leases
......
Mar 19 17:01:06 linux-kzy1 dhcpd: DHCPDISCOVER from a0:d3:c1:f7:f2:64 via eth0: network 192.168.10.0/24: no free leases
Mar 19 17:01:38 linux-kzy1 dhcpd: DHCPDISCOVER from a0:d3:c1:f7:f2:64 via eth0: network 192.168.10.0/24: no free leases
linux-kzy1:/home/test/Documents #

Which ties into my first question: dhcp no free lease: I googled a bit, I found a post from a guy on ubuntu who has the same error message and the suggested course of action is to change ownership of the lease file to dhcpd and give it 777 for permission. Which I thought is weird, because the lease file is automatically created by the dhcpd itself, so it really shouldn't be a permission issue shouldn't it? (Anyway, tried that didn't do a thing.) right now it is owned by root/root and has this permission: -rw-r--r--.

2nd question: once the client gets a reply from my dhcp server saying no free lease, does it remember this dhcp server as no free lease and does it persist throughout reboots? Because I tried rebooting the client a number of times and I don't see anything on the wireshark at all. You will notice the time stamp on the last "no free lease" message is not as late as the other messages from the var/log/messages or rc.dhcpd.log and I rebooted the client and the dhcp plenty of times since 17:01:38.



Thanks for all your help in advance everyone.

Hello
I am working on Red Hat 6.4 Enterprise Server.Here commands systemctl and systemd are not working.Error comes command not found.I am using service command in place of systemctl to start,stop,enable and disable service etc.
example service httpd start
Also I am not able to install any software or package by using yum command.Whenever I try to install a package through yum the below error comes
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Repository 'repository_url': Error parsing config: Error parsing "baseurl = 'repository_url'": URL must be http, ftp, file or https not ""
Setting up Install Process
Nothing to do
Please advice some other commands or what to do.Regards Najam

Hi,
I am very new to linux, and frankly I do not know a whole lot about computers in general, as I'm entirely self taught, and that was all on windows. I really like the idea and concept of linux and ubuntu, and am in the process of learning. I have recently installed Ubuntu 8.04 LTS on an ex Vista computer at work (upon the urging by the boss). I can give more information on the system if needed. However, I think the problem may not be with the system. This is what I got. I installed the o/s and started downloading the updates from the list. As I tried to install Samba and Wine, all of a sudden things started to become complicated. As I'm doing this at work, and everyone is excited to 'play' with this new o/s, someone tried to download limewire as well, when I was away. I didn't see the error messages at that point, but they apparently had some message about java, and tried to shut everything down. Now when I came back, I get this message:

E: dpkg was interrupted you must manually run 'dpkg -- configure - a' to correct.
Problem E: _cache->open()failed

So, not knowing much about linux and even less about using the terminal, I did open the terminal, and typed in: dpkg--configure-a and hit enter. Then it tells me that that command is not found.

I have followed some other posts that deal with this problem, however, all the remedies that worked for them did not work for me. I could use some help, please. My other option is to just reinstall the o/s all over and start new. Thank you.

I use Centos 7 and have just installed vsftpd to the server , I want to start vsftp service after install , when I tried the command "systemctl |grep vsftp" , it show nothing .

I use previous , all services keep at /etc/rc.d/init.d , what I need to do is /etc/rc.d/init.d/vsftpd start .

Please advise what I need to do for Centos 7 to start vsftpd ?

thanks

So, I'm new here. Was thrown into the deepend (read: shallow pool) of linux administration of a few centos 6.5 servers in October, and I've been pretty slow on the uptake. Years of Windows administration and desktop support will do that I guess.

So we have qmail on our prod servers that send out messages for our webapps. Postfix failed last night on a prod server, and it occurred to me that it's happened a few times since I've started, and instead of waiting for clients to tell us, I should be more proactive. I came up with/begged/borrowed/stole a quick script to check to see if postscript was running, and if it was, restart it, and contact us. This was to be run from jenkins.

Quote:
if (( $(ps -ef | grep -v grep | grep postfix | wc -l) > 0 ))
then echo 'Mail is up.'
else echo 'Mail is down! Attempting to restart service...'
service postfix restart
fi
The question was then raised about an unresponsive process (zombies!), and I figured it might be a better idea to use postqueue -q, or mailq to either see a Mailbox is empty, or look for fatal if postfix is off or unresponsive. This is where I ran out of coffee and went over the deep end.

To get this to work, I thought it would be a good idea to run two scripts. One to check if the mail queue is empty, and if not, send up a flag. The next was to run a few minutes later to check and see if the mail queue was throwing up a fatal error, and if it was, throw up a second flag, which sent out an email from jenkins. Incidentally, if the mailqueue were clogged, this would also trigger an alert. Our mailqueue doesn't get a lot of traffic.

First command. Returns then and else statement without issue.
Quote:
if ((mailq | grep 'empty') < 0 ); then echo 'Mail is up.'; else echo 'Mail queue is not empty. Please check mail server'; fi
Second one... Not so much.
Quote:
if (mailq | grep 'fatal') < 1; then echo 'Mail is up.'; else echo 'Mail queue is not empty. Please check mail server'; fi
You can probably suss out what I'm trying to do here, even though I'm not doing it right. Any ideas? I know this is newbie stuff, and I appreciate your taking the time to read this people.

I use Redhat 6.3 , when I install run "yum install vsftpd" , it pops the following error, does it mean the library is not support , I have to update the kernel ? thanks

Code:

Loaded plugins: product-id, security
file:///media/localrepos/Server/repodata/repomd.xml: [Errno 14] Could not open/read file:///media/localrepos/Server/repodata/repomd.xml
Trying other mirror.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package vsftpd.x86_64 0:2.2.2-11.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================
 Package                    Arch                       Version                            Repository                    Size
=============================================================================================================================
Installing:
 vsftpd                     x86_64                     2.2.2-11.el6                       RHEL-6.3                     151 k

Transaction Summary
=============================================================================================================================
Install       1 Package(s)

Total download size: 151 k
Installed size: 331 k
Is this ok [y/N]: 

Error Downloading Packages:
  vsftpd-2.2.2-11.el6.x86_64: failu  ../Packages/vsftpd-2.2.2-11.el6.x86_64.rpm from RHEL-6.3: [Errno 256] No more mirrors to try.
Loaded plugins