Discuss April 2016

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150 participants
130 discussions

I want to connect to a l2tp server from centos.
by Eliezer Croitoru 22 Mar '17

22 Mar '17

I have a server currently connecting to a pptp remote server. This server(lns\lac) has the option for pptp connections and l2tp connections. The l2tp connections are not using ipsec encryption at all. I have seen couple guides\tutorials on the internet: - https://raymii.org/s/tutorials/IPSEC_L2TP_vpn_on_CentOS_-_Red_Hat_Enterpris… - https://wiki.archlinux.org/index.php/L2TP/IPsec_VPN_client_setup But all the guides that I have found are using ipsec with "secret". On ubuntu there is a gui applet that helps setting these kind of connections up but I am working with a CentOS server and not Ubuntu desktop. If someone used l2tp the same way I want to use on CentOS 7 please give me some advice. If you have a guide which might help me I will be more then happy to see this one. Thanks, Eliezer

4 8

CentOS-7-x86_64-GenericCloud.raw very unusual format
by Aliaksei Sheshka 15 Oct '16

15 Oct '16

Hello! Is anyone aware why CentOS-7-x86_64-GenericCloud.raw has such unusual format ? root@test-srv:~# wget http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw --2016-03-21 13:16:31-- http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138 Connecting to cloud.centos.org (cloud.centos.org)|162.252.80.138|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 374668382 (357M) [application/x-gzip] Saving to: 'CentOS-7-x86_64-GenericCloud.raw' CentOS-7-x86_64-GenericCloud.raw 100%[=========================================================================>] 357.31M 12.9MB/s in 30s 2016-03-21 13:17:03 (11.9 MB/s) - 'CentOS-7-x86_64-GenericCloud.raw' saved [374668382/374668382] Download reports [application/x-gzip] for raw file And indeed root@test-srv:~# file CentOS-7-x86_64-GenericCloud.raw CentOS-7-x86_64-GenericCloud.raw: gzip compressed data, last modified: Sat Feb 27 02:14:37 2016, from Unix Ok, lets uncompress: root@test-srv:~# zcat -d CentOS-7-x86_64-GenericCloud.raw > CentOS-7-x86_64-GenericCloud.a And check again root@test-srv:~# file CentOS-7-x86_64-GenericCloud.a CentOS-7-x86_64-GenericCloud.a: POSIX tar archive (GNU) Ok. it's a tar archive. root@test-srv:~# tar -xf CentOS-7-x86_64-GenericCloud.a -v CentOS-7-x86_64-GenericCloud-1602.raw Now it's CentOS-7-x86_64-GenericCloud-1602.raw file which is indeed raw What is the point to pack single raw file into the tar.gz and to name it raw ? Or it's just a mistake ? Thanks!

8 16

[OT] disk utility showing message "the partition is misaligned by"
by g 26 Aug '16

26 Aug '16

greetings. centos 6.7 [current] 'disk utility' has started showing message; WARNING: The partition is misaligned by 2560 bytes. This may result in very poor performance. Repartitioning is suggested. for sdc5 - /home partition. /dev/sdc5 302243312 156348604 130534968 55% /home /dev/sdc7 80854912 57088 76683952 1% /hdd/c/07 other than time involved to backup sdc5, repartition is not a problem. to my thinking, but not recalling, with fsck; fsck -rN -t ext4 /dev/sdc5 * to check repairs fsck -r -t ext4 /dev/sdc5 * to repair gparted was used to partition drive. is pmagic live a better choice, or should i return fdisk because; =+=+= $ sudo fdisk -l /dev/sdc [sudo] password for geo: Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x0009ede7 Device Boot Start End Blocks Id System /dev/sdc1 * 1 103 819200 83 Linux Partition 1 does not end on cylinder boundary. /dev/sdc2 103 230 1024000 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sdc3 230 2107 15073280 83 Linux /dev/sdc4 2107 121602 959844352 5 Extended /dev/sdc5 2108 42019 320587970+ 83 Linux Partition 5 does not start on physical sector boundary. =+=+= suggestions for correcting above boundaries also appreciated. help needed and greatly appreciated. -- peace out. If Bill Gates got a dime for every time Windows crashes... ...oh, wait. He does. THAT explains it! -+- in a world with out fences, who needs gates. CentOS GNU/Linux 6.7 tc,hago. g .

7 9

Broadcom BCM4313 support broken with kernel 2.6.32-573.7.1.el6.centos.plus.x86_64?
by wwp 24 Aug '16

24 Aug '16

Hello, I noticed that with latest kernel (2.6.32-573.7.1.el6.centos.plus.x86_64), my laptop's Wifi doesn't work, whereas with previous kernel (2.6.32-504.30.3.el6.centos.plus.x86_64), it works fine. Is this a known issue or did I miss something new? BTW, `lspci` says: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01) Regards, -- wwp

2 2

Any further developments on CentOS7 for i386?
by Kay Schenk 22 Jun '16

22 Jun '16

Well I haven't tested out the CentOS 7 for i386 yet as sent in the message of 06/02-- https://lists.centos.org/pipermail/centos-devel/2015-June/013426.html Nor have I seen any additional information. So how is this going? I'm almost ready to jump in as I would really prefer to be on Gnome 3. -- -------------------------------------------- MzK “The journey of a thousand miles begins with a single step.” --Lao Tzu

3 7

Badlock bad luck
by Bob Smith 23 May '16

23 May '16

I had exactly the same problem. Your workaround fixed me too. With the new samba packages my samba\logs are full of errors. If I temporarily disconnected the PC client NIC cable, and logged into the domain using cached credentials, then I could get past the problem. But, you helped me greatly with this posting. I wasted hours checking Windows updates - useless. We still need the new configuration settings for our conf file to workaround this problem. Bob Smith bobsmith at dbata dot com >* Am 13.04.2016 um 07:51 schrieb Mogens Kjaer <mk at lemo.dk <https://lists.centos.org/mailman/listinfo/centos>>: *> >* Hello, *> >* I run a CentOS 6 machine with samba, serving approx. 150 Windows users with samba running as an NT-like PDC. *> >* After today's samba update (samba-3.6.23-30.el6_7.x86_64 etc.), nobody can log in. *> >* They all get the "Trust relationship failed" error message. *> >* If I downgrade: *> >* yum downgrade samba-common samba-winbind samba-winbind-clients samba-client samba samba-doc samba-domainjoin-gui libsmbclient *> >* - the problem goes away. *> >* What am I missing? *> >* Mogens *> >* -- *>* Mogens Kjaer, mk at lemo.dk <https://lists.centos.org/mailman/listinfo/centos> *>* http://www.lemo.dk <http://www.lemo.dk> *>* _______________________________________________ *>* CentOS mailing list *>* CentOS at centos.org <https://lists.centos.org/mailman/listinfo/centos> *>* https://lists.centos.org/mailman/listinfo/centos <https://lists.centos.org/mailman/listinfo/centos> *

3 2

Re: [CentOS] Badlock bad luck
by Bill Baird 11 May '16

11 May '16

I'm seeing the exact same behavior in my environment (NT4 PDC, not AD). I had to downgrade samba get systems working again. The full error message is: "The trust relationship between this workstation and the primary domain failed". Did you have any luck finding a solution?

4 5

centos samba sssd active directory
by Stefan Fuhrmann 07 May '16

07 May '16

Hello all, Im having the latest centos that should be integrated into win 2012 active directory domain. Im having Authentication running, an AD user can login via ssh, getent and id working But Im not able to get the samba shares running with AD [sfu-erp] comment = Mandant path = /share # ; valid users = @"RZ-DOMAIN\linuxtest" @"RZ-DOMAIN\linuxtest" valid users = DOMAIN # valid users = @"RZ-DOMAIN+domänen-benutzer" # valid users = @"RZ-DOMAIN" #valid users = %S, RDOMAIN\%S #valid users = @DOMAIN #valid users = linuxtest # force user = fuhste # guest ok = yes # force group = @"RZ-DOMAIN+domänen-benutzer" # force group = @"RZ-ODOMAIN" # ; force group = domänen-benutzer force create mode = 0660 force directory mode = 0770 readonly = no writeable = yes As you can see Itried a lot with valid users with no success. Im trying some days now but Im not able to get it running. Need more information? Can someone help? Tia Stefan

2 3

systemd-journald corruption
by Chris Adams 03 May '16

03 May '16

I have several recently-installed CentOS 7 servers that keep having systemd-journald corruption (which stops ALL logging, including syslog). Interestingly, they are all spam-scanning servers running amavisd-new (so could be some particular pattern is triggering it). Is there a "supported" way to just cut systemd-journald out of the picture and have log entries go straight to rsyslogd? Has anyone else seen this? -- Chris Adams <linux(a)cmadams.net>

2 8

E-mail advice sought
by Alice Wonder 01 May '16

01 May '16

I'm working on setting up an e-mail service. I've got the e-mail servers working beautifully and am presently working on re-writing the parts of Roundcube I don't like (e.g. it uses inline JavaScript in a few places so CSP breaks it) but - Is there any advice on characters to allow in usernames? I know there are some wacky characters that are legal in e-mail addresses but are generally frowned upon - like "very.(),:;<>[]\".VERY.\"very@\ \"very\".unusual"@example.com is apparently a legal address - but I know I don't want to allow ampersands and brackets etc. in an address. I don't think a whitelist alphabet is best approach because of people with names that are not spelled with Latin characters. Is there an existing blacklist of characters that technically legal but are generally avoided in e-mail addresses? Thanks

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Discuss April 2016