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setting up bare minimal CentOS VM
by Rudi Ahlers 10 Aug '11

10 Aug '11

Hi all, I need to setup a real bare minimum CentOS Virtual Machine, but with normal internet / network access. i.e. I need SSH, Mutt, Links, lynx, ping, tracert, dig, iptables, etc. Does anyone know where (if?) I can get a list of applications which gets installed with CentOS 6 if every option is deselected in the installer so that I can see what I can remove which isn't really necessary once installed? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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Re: [CentOS] Two Samba Servers and Rsync
by Tom Diehl 10 Aug '11

10 Aug '11

On Tue, 9 Aug 2011, John R Pierce wrote: > On 08/09/11 12:50 PM, Railic Njegos wrote: >> I plan to use rsync to sync data from second to first server. It is OK ? >> Any suggestion ? > > rsync doesn't much tolerate network glitches in my experience. its > also a incremental file backup/copy, and won't be doing a 'snapshot' so > if any of these files you're copying are things that are randomly > updated like a database, its quite possible for the copy to be useless. > > as a backup strategy, having a single copy that you overwrite when you > make a new copy is weak. you have no history, you can't recover the file > that the user overwrote 2 days ago and forgot to tell you until today, > as you just overwrote your backup with his mistake last night. There is also rdiff-backup if you need history. Of course it is not a perfect solution either. Any solution is going to have trade offs. Regards, -- Tom Diehl tdiehl(a)rogueind.com Spamtrap address mtd123(a)rogueind.com

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keyboard problem
by bcb 10 Aug '11

10 Aug '11

OK, I know what I'm doing is "officially unsupported", but perhaps someone has some suggestions... I have a CentOS 5.6 system running as a virtual machine using VMware player. I cloned the system, booted the clone to make sure everything worked after cloning, it did. I then booted off a CentOS 6 ISO and did an upgrade (I know, unsupported!). I've got the system to the point where everything works except the keyboard. If I boot to a command line, it works, as soon as X gets involved, there is no response at all from the keyboard. The on-screen keyboard does work. The physical keyboard works in the host OS and all of the other guest OSes on the machine. It works in the original CentOS 5.6 VM. I'm at a loss and would love some advice on where to look next. Thanks! Bruce

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tweek startup and logon
by Johan Vermeulen 10 Aug '11

10 Aug '11

Dear All, CentOs 6 is great, but I would like to get back 2 things from 5.6 : how can I always see the text lines during startup? (so no graphical screen ) how can I *not *see all the users on the system when loging on? (so that users also have to remember their username) thanks for any advise. James -- Johan Vermeulen IT-medewerker Caw De Kempen johan.vermeulen(a)cawdekempen.be 0479.82.01.41 Opensource Software is the future.

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Centos6 Migration glitch - Samba
by david 10 Aug '11

10 Aug '11

Folks My experiments have shown that Samba behaves differently in Centos 5.6 and Centos 6 (updated). In Centos 5, service smb restart restarts both smb and nmb. In Centos 6, however, it restarts only smb. REMEDY: a) Make sure that both services running b) Issue chkconfig smb on chkconfig nmb on IS THIS THE DESIRED BEHAVIOR I have no idea if this difference is a "bug" or a "feature", and leave it to others to determine that. David Kurn

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Re: [CentOS] fail2ban help
by Nikos Gatsis - Qbit 10 Aug '11

10 Aug '11

On 9/8/2011 7:00 μμ, centos-request(a)centos.org wrote: >> > Hello list. >> > I have a question for fail2ban for bad logins on sasl. >> > I use sasl, sendmail and cyrus-imapd. >> > In jail.conf I use the following syntax: >> > >> > [sasl-iptables] >> > >> > enabled = true >> > filter = sasl >> > backend = polling >> > action = iptables[name=sasl, port=smtp, protocol=tcp] >> > sendmail-whois[name=sasl, dest=my@email] >> > logpath = /var/log/maillog >> > maxretry = 6 >> > >> > and the following filter: >> > >> > failregex = (?i): warning: [-._\w]+\[<HOST>\]: SASL >> > (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: >> > [A-Za-z0-9+/]*={0,2})?$ >> > >> > in iptables: >> > >> > fail2ban-sasl tcp -- anywhere anywhere tcp >> > dpt:smtp >> > ... >> > >> > Chain fail2ban-sasl (2 references) >> > target prot opt source destination >> > RETURN all -- anywhere anywhere >> > >> > >> > The problem is that never ban bad logins. >> > >> > I tried to change action as port="imap,imaps,pop3,pop3s,smtp" but >> > nothing change. >> > >> > Can somebody help me? >> > >> > Thank you, >> > Nikos >> > >> > >> > >> > _______________________________________________ >> > CentOS mailing list >> > CentOS(a)centos.org >> > http://lists.centos.org/mailman/listinfo/centos > Hello Nikos, > I have nearly the same regex as you: > > failregex = : warning: [-._\w]+\[<HOST>\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed.* > and it works with > fail2ban-regex /var/log/maillog /etc/fail2ban/filter.d/sasl.conf > > > Gru? Hello list I change failregex and finally show results! failregex = : badlogin: [-._\w]+ \[<HOST>\] plaintext [A-Za-z0-9+/] SASL$-13$: authentication failure: checkpass failed fail2ban-regex find hits. However, although a line added in iptables and I recieve an email that show the ban ip address, badlogins still continuing from the same IP. iptables -L: Chain INPUT (policy ACCEPT) target prot opt source destination fail2ban-sasl tcp -- anywhere anywhere tcp dpt:smtp fail2ban-SSH tcp -- anywhere anywhere tcp dpt:ssh ... Chain fail2ban-sasl (1 references) target prot opt source destination DROP all -- [ip.ip.ip.ip] anywhere RETURN all -- anywhere anywhere What is wrong now? Thank you Nikos

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Re: [CentOS] fail2ban help
by Nikos Gatsis - Qbit 10 Aug '11

10 Aug '11

Nikos Gatsis - Qbit <ngatsis(a)qbit.gr> Gesendet von: centos-bounces(a)centos.org 09.08.2011 10:40 Bitte antworten an CentOS mailing list <centos(a)centos.org> An centos(a)centos.org Kopie Thema [CentOS] fail2ban help Hello list. I have a question for fail2ban for bad logins on sasl. I use sasl, sendmail and cyrus-imapd. In jail.conf I use the following syntax: [sasl-iptables] enabled = true filter = sasl backend = polling action = iptables[name=sasl, port=smtp, protocol=tcp] sendmail-whois[name=sasl, dest=my@email] logpath = /var/log/maillog maxretry = 6 and the following filter: failregex = (?i): warning: [-._\w]+\[<HOST>\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: [A-Za-z0-9+/]*={0,2})?$ in iptables: fail2ban-sasl tcp -- anywhere anywhere tcp dpt:smtp ... Chain fail2ban-sasl (2 references) target prot opt source destination RETURN all -- anywhere anywhere The problem is that never ban bad logins. I tried to change action as port="imap,imaps,pop3,pop3s,smtp" but nothing change. Can somebody help me? Thank you, Nikos _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos Hello Nikos, I have nearly the same regex as you: failregex = : warning: [-._\w]+\[<HOST>\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed.* and it works with fail2ban-regex /var/log/maillog /etc/fail2ban/filter.d/sasl.conf Gru? Andreas Reschke --------------------------------------------------------- I try yours and get no matches on maillog. Do you thing that the following is correct? ... port="imap,imaps,pop3,pop3s,smtp" ... Thank you

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mingetty on centos 6
by Jerry Geis 09 Aug '11

09 Aug '11

hi all, on centos 5 - I could trim the number of mingetty's running by editing /etc/inittab on centos 6 there are none in the /etc/inittab file but it reverences /etc/init/tty.conf. I dont see in there how to control how many mingetty's get started. Where is that? THanks, Jerry

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KVM , virt-manager , USB-devices
by Timothy Kesten 09 Aug '11

09 Aug '11

Hi Folks, Using CentOS 6 x86_64. I've installed a WIN-XP guest successful (conversion from a VMWare-Image) Everything works fine - expect USB-Devices. I've installed connected USB-Stick with virt-manager but in the WIN-XP guest no device accessible. What goes wrong? More information needed? Thx Timothy

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Can two machines in the same network have the same hostname with different IPs?
by Indunil Jayasooriya 09 Aug '11

09 Aug '11

Hi, Can two machines in the same network have the *same hostname* with different IPs? I have done it in test environment. I want to do it under production? is it possible ? is it recommended? let's say . one Server is *mail.example.com* with ip address* 192.168.0.1* the other Server is also *mail.example.com* but with another ip address *192.168.0.2 * -- Thank you Indunil Jayasooriya

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