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stale file handle issue
by m.roth＠5-cent.us 03 Nov '15

03 Nov '15

I've run out of ideas on this.... A CentOS 6 box serving nfs: two directories separately: /this/partition/dir0 and /this/partition/dir1. Everything looks good on it. On the servers it's exporting to - two are CentOS 6, one's CentOS 7, they all automount /net/server/this/partition/dir0... but no matter what I've done, restarting autofs and nfslock, umounted things... but with autofs off, even when I manually mount it to /mnt, I get stale file handle. The two dirs are owned by root, but one's got a different group. Selinux settings are the same. Clues for the poor? mark

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SSH login between servers still asking for password, why?
by Reynier Perez Mira 03 Nov '15

03 Nov '15

I have two servers identified as `server-1 - 192.168.3.128` and `server-2 - 192.168.3.130`. I am setting up `capifony` for automatic deployment from server-1 to server-2 and this is what I have done so far: 1. In both servers I have created a user `deploy` without password since that's the user I will use for deployment. 2. In server-1 I setup a SSH keys by running the command: `ssh-keygen` and I leave without pass-phrase and default directories. 3. I have copied the content of `/home/deploy/.ssh/id_rsa.pub` at server-1 into server-2 at `/home/deploy/.ssh/authorized_keys`. 4. From server-1 I try to reach server-2 by running `ssh deploy(a)192.168.3.130` and it's asking for a password (below is the output) $ ssh deploy(a)192.168.3.130 The authenticity of host '192.168.3.130 (192.168.3.130)' can't be established. RSA key fingerprint is 3c:81:da:7a:78:0f:b0:2f:44:3b:62:fb:c9:6f:33:86. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.3.130' (RSA) to the list of known hosts. deploy(a)192.168.3.130's password: This is the `-v` output of the command above: OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to 192.168.3.130 [192.168.3.130] port 22. debug1: Connection established. debug1: identity file /home/deploy/.ssh/identity type -1 debug1: identity file /home/deploy/.ssh/identity-cert type -1 debug1: identity file /home/deploy/.ssh/id_rsa type 1 debug1: identity file /home/deploy/.ssh/id_rsa-cert type -1 debug1: identity file /home/deploy/.ssh/id_dsa type -1 debug1: identity file /home/deploy/.ssh/id_dsa-cert type -1 debug1: identity file /home/deploy/.ssh/id_ecdsa type -1 debug1: identity file /home/deploy/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.3 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '192.168.3.130' is known and matches the RSA host key. debug1: Found key in /home/deploy/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information Cannot determine realm for numeric host address debug1: Unspecified GSS failure. Minor code may provide more information Cannot determine realm for numeric host address debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information Cannot determine realm for numeric host address debug1: Next authentication method: publickey debug1: Trying private key: /home/deploy/.ssh/identity debug1: Offering public key: /home/deploy/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Trying private key: /home/deploy/.ssh/id_dsa debug1: Trying private key: /home/deploy/.ssh/id_ecdsa debug1: Next authentication method: password deploy(a)192.168.3.130's password: Why? What I am doing wrong?

3 3

Installing mSATA Solid State Drive in Dell Precision M3800
by ken 03 Nov '15

03 Nov '15

I'm considering getting a Dell Precision M3800 Mobile Workstation, would want to install my own mSATA SSD in it. Does anyone here have one of these machines? If so, is an SSD a user-installable component? And if so again, how much needs to be taken apart? Thanks much.

2 1

problem with openjdk version
by Arpita Mallick 02 Nov '15

02 Nov '15

I am using cent OS 6.7 andI have installed omnet++ 4.6 on it.When I am trying to create a new omnet++ project then suddenly omnet++ window is terminating and an error message is showing as "A problem in the Java-1.7.0-openjdk-1..7.0.85-2.6.1.3el6_7package has been detected".Then I uninstalled this version of java and tried with version "1.7.0_91" and "1.7.0_79" but can't solve this problem.please help me in solving this problem.

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use pssh to restart a service
by Tim Dunphy 02 Nov '15

02 Nov '15

Hi all, I need to restart a service on a few elasticsearch nodes. I'm trying to do it with pssh. I'm getting this error when I try to do that: pssh -h es_list "/bin/sudo -S /bin/systemctl restart elasticsearch" [1] 17:01:50 [FAILURE] bluethundr(a)es2.example.com Exited with error code 1 [2] 17:01:51 [FAILURE] bluethundr(a)es3.example.com Exited with error code 1 [3] 17:01:51 [FAILURE] bluethundr(a)es1.example.com Exited with error code 1 I have to sudo up from my user account as root logins are disallowed. However a simple 'echo hello' command that doesn't require sudo works fine: #pssh -h es_list "/bin/echo hello" [1] 17:00:40 [SUCCESS] bluethundr(a)es1.example.com [2] 17:00:41 [SUCCESS] bluethundr(a)es3.example.com [3] 17:00:41 [SUCCESS] bluethundr(a)es2.example.com What am I doing wrong? Thanks, Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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OT Strange IP address on home network
by Timothy Murphy 02 Nov '15

02 Nov '15

Why does "arp -a" show IP address 169.254.192.123 on my 192.168.2.0 home network? I recall seeing this IP address somewhere, but don't remember where. -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

8 14

About ecryptfs-utils
by Sergio Belkin 01 Nov '15

01 Nov '15

Hi folks, I've found ecryptfs module into kernel-plus, but ecryptfs-utils is missing: [root@centos7 ecryptfs-utils-108]# uname -r 3.10.0-229.14.1.el7.centos.plus.x86_64 [root@centos7 ecryptfs-utils-108]# lsmod | grep ecryptfs ecryptfs 85424 0 [root@centos7 ecryptfs-utils-108]# yum -q repolist id del repositorio nombre del repositorio estado Webmin Webmin Distribution Neutral 229 base/7/x86_64 CentOS-7 - Base 8.652 centosplus/7/x86_64 CentOS-7 - Plus 63 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 8.654 extras/7/x86_64 CentOS-7 - Extras 236 updates/7/x86_64 CentOS-7 - Updates 1.540 zfs/x86_64 ZFS on Linux for EL7 145 [root@centos7 ecryptfs-utils-108]# LANG=C yum -q search ecryptfs-utils Warning: No matches found for: ecryptfs-utils Just I wonder why these package is not included in any CentOS repo (I guess because is not included in upstream), do you know why? Thanks in advance! -- -- Sergio Belkin LPIC-2 Certified - http://www.lpi.org

3 3

C7: screensaver locks screen
by Fred Smith 31 Oct '15

31 Oct '15

Strange thing just began happening this past weekend with my Centos-7 netbook (using the MATE desktop, which may mean it's an EPEL problem...). the lock screen checkbox in the screensaver's UI is NOT checked. I've even used the dconf editor to uncheck ALL the boxes in the screensaver section that relate to locking the screen. nada. no such luck. even after rebooting, it still locks the screen. I'm open to further suggestions, thanks in advance! Fred -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ---------------------------- Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary, and his understanding no one can fathom. ----------------------------- Isaiah 40:28 (niv) -----------------------------

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Disaster recovery recommendations
by Max Pyziur 31 Oct '15

31 Oct '15

Greetings, I have three drives; they are all SATA Seagate Barracudas; two are 500GB; the third is a 2TB. I don't have a clear reason why they have failed (possibly due to a deep, off-brand, flakey mobo; but it's still inconclusive, but I would like to find a disaster recovery service that can hopefully recover the data. Much thanks for any and all suggestions, Max Pyziur pyz(a)brama.com

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BCP 47 support in CentOS 7 PHP
by Alice Wonder 31 Oct '15

31 Oct '15

This is something I would like to share, and if possible, get feedback. I am working on a calendar webapp - something to replace Google Calendar for webmasters that do not like the idea of their users being tracked. Part of that project involves time zone selection, and time zone selection I want internationalized, and I found the existing functions in PHP to be extremely poor. As in the php function for getting the preferred language from the browser was often flat out incorrect. That led me to creating my own class for BCP 47 support : https://calendar.librelamp.com/BCP47 Not perfect yet (er, probably never will be perfect) but at least the bugs I find are my bugs so I can figure out how to fix them. Just found one - with perfectly valid language tag es-419 when the class attempts to create a glibc language tag, it uses es_ES.utf8 which is obviously wrong. I didn't take into account UN region codes when it tries to find a glibc match. But anyway, I know it is asking a lot, but I want to get this right and would love feedback from anyone who deals with internationalizing php web applications. Thanks, Alice

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