Tagged Questions

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0
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1answer
339 views

Multiple python versions under apache+mod_wsgi

I have several virtual hosts configured under the same apache instance on redhat: apache-2.2.15 mod_wsgi-3.5 compiled with default system python-2.6 For every virtual host WSGIScriptAlias setting ...
0
votes
1answer
41 views

Is there a max length to java_opts arguments on a tomcat process

We have a tomcat startup script with a java_opts that contains a fairly lengthy (around 14 hosts) entry for -Dhttp.nonProxyHosts, I've noticed that although tomcat appears to start properly, entries ...
2
votes
1answer
59 views

pam_tally2 causing unwanted lockouts with SCOM or Nervecenter

We use pam_tally2 in our system-auth config file which works fine for users. With services such as SCOM or Nervecenter it causes lockouts. Same behavior on RHEL5 and RHEL6 This is ...
1
vote
1answer
135 views

Installing OpenSSL that supports SNI along with previous version of OpenSSL

So I learned that to host multiple HTTPS websites on the same IP address you need an OpenSSL version that supports SNI (0.9.8f and higher). My RHEL5 box currently has 0.9.8e and Apache version ...
0
votes
0answers
132 views

Red Hat 6.5 - Login Errors After Security Hardening

I followed the information below, however, it is strangely blocking me from entering a password upon entering the login prompt on the server: To configure the system to lock out accounts after a ...
1
vote
0answers
88 views

Red Hat 6.5- sysctl -w net.ipv6.conf.default.accept_redirects=0

I am in the process of writing a Red Hat 6.5 Kickstart disc with hardened security. I have run a program to determine where the weaknesses are in my system, and apparently there is a medium severity ...
0
votes
1answer
507 views

CentOS/Redhat: Systemwide aliases when logging in through LDAP/sssd

I've asked this question in the Centos Support forum, but we didn't found a solution for it (https://www.centos.org/forums/viewtopic.php?f=13&t=46101#p196728) When logging in through LDAP/sssd, ...
2
votes
1answer
1k views

RHEL 6.5 to 6.4 downgrade error

I was following a RHEL solution about the downgrade, which went as follows: Check version and releases search for the available packages yum list kernel-2.6.32-358* Install the rhel 6.4 kernel ...
1
vote
1answer
62 views

Difference between “crontab -e” & editing crontab file manually? [duplicate]

I noticed some people use "crontab -l" to view cronjobs and "crontab -e" to edit them. However there are also times where people manually modify "/etc/crontab" to view/add/remove cronjobs. Both ...
3
votes
1answer
139 views

Need 32 Bit Apache on Red Hat 6.5 64bit

I have a Red Hat 6.5 Enterprise Server which is 64 bit. I have a 3rd party package that I use for Web Services that is an add-on to Apache Web Server. This package is 32 bit so I need to have a 32 bit ...
0
votes
0answers
718 views

SSH hangs after authentication

When logging in to one of my servers over ssh, it just hangs after authentication. This is the output on the client with -v. OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 debug1: Reading ...
2
votes
1answer
101 views

Varnish SMS allocation request generate HTTP 503

Sometimes my application return a HTTP 503 error to a client. The only clue I have is that when it happen, Cacti reports a peak of Varnish SMS Allocation requests. After some research I may have ...
11
votes
2answers
3k views

Linux containers (LXC) on Red Hat/CentOS EL6 - lxc-create versus libvirt?

It's tricky trying to stay within the good graces of Red Hat and still plan for system longevity... I've been a proponent of Linux Containers (LXC) for over a year. My initial installations were ...
2
votes
1answer
107 views

Linux IP forwarding trouble

In my environment most of the servers have 2 network cards. A primary/user network card used by the application, and a secondary/backup adapter used for backups, bulk copies etc. I just set up a ...
1
vote
0answers
32 views

Redhat quitting process never works always have to kill it

I am working on a RedHat server creating a unicorn process. I have two sets of these processes being created. I am able to QUIT one of the process fine and do so over and over again create it and QUIT ...
0
votes
1answer
41 views

Why don't RedHat 5.x compiled Ruby-binaries work on Fedora 17?

I have compiled Ruby 2.0.0p247-binaries on a RedHat Enterprise Linux 5-system. When I require 'net/https' on this same system, everything is fine. The binaries have been installed on a common ...
0
votes
1answer
91 views

Untrusted SSL certificates on CentOS VPS

I'm currently in the process of becoming PCI compliant and I have 6 warnings remaining. The one I'm particularly struggling with is "SSL Certificate Cannot Be Trusted IMAP (143/TCP)". I'm using ...
0
votes
0answers
281 views

RHEL7 RC, why isnt /etc/sysconfig/static-routes active after reboot? But it is after 'service network restart'?

I just started to port our auto provision system (chef scripts etc) on RHEL 7RC. But something isnt working as expected, I suspect systemd is the culprit. So we have some default static routes in ...
0
votes
2answers
62 views

process works under strace but not normally

I have a process - a perl script - that does: while true check a POP account on a server on the lan process any email found write logs - messages found, actions taken, errors sleep ...
1
vote
1answer
511 views

Account Lockout with pam_faillock in RHEL6

Previously, I asked about using pam_tally2 under RHEL6. I would like to pose this question and answer to document the recommended use of pam_faillock over pam_tally2 for the same function; What is ...
1
vote
0answers
82 views

Implementing and testing a Subversion hook

Background I'm trying to implement a number of commit hooks for Subversion. I have done a lot of research to try and get a simple test hook to work, however I have had no luck. For reference I have ...
0
votes
1answer
34 views

PTR entry is setting my hostname. How do I stop it?

I'm running RHEL 6.5. My machine is getting it's IP address from our DHCP server. I'm getting this strange behavior where the machine will apparently query the DNS server for a PTR entry for the IP ...
0
votes
5answers
89 views

Signal Root to Execute a Program

I have a program that must be run as root, and needs to be triggered by an outside process to start (it is triggered by a build process completion). It is not on a schedule, so cron is not an option. ...
0
votes
0answers
321 views

GlusterFS issues - volume heal static info split-brain : FAILED

I have been having these GlusteFS problems ever since I started monitoring this. Any idea how this can be fixed? [2014-05-07 09:50:02.511879] : volume heal static info split-brain : FAILED : ...
0
votes
1answer
243 views

mysql 5.6 doesn't start automatically on redhat 6.4 server start-up but do start when manually run “service mysql start”

I'm trying without success to set mysql to start automatically (mysql 5.6 on RHEL6.4) When I run "service --status-all" after server (redhat) restart it always shows "MySQL is not running, but lock ...
0
votes
1answer
3k views

Linux Red Hat Resize VM resize2fs - Couldn't find valid filesystem superblock

I'm trying to increase the size of a Linux Red Hat Virtual Machine by 10Gig. This is just on a Test Server I created that I'm trying to figure out. I increased the VM by 10 gig with this command ...
1
vote
0answers
94 views

How can I run a CentOS (Red Hat) cluster in degraded mode?

I've installed Red Hat's cluster software on an install of CentOS 6.5, and use it to provide redundant routing from one network to another. This works fine, and I have a pair of boxes providing the ...
0
votes
2answers
181 views

Sendmail Keeps Listening Local IP

I'm running RHEL 6 and already done the following modifications : [root@ark mail]# grep 0.0.0.0 sendmail.mc DAEMON_OPTIONS(`Port=smtp,Addr=0.0.0.0, Name=MTA')dnl [root@ark mail]# make sendmail.cf ...
2
votes
2answers
622 views

LVM: Duplicate VG name VolGroup00

I'm on a server that shows a duplicate VG name. How can I rename one of these VolGroups to get rid of this conflict? [root@dev-server dev]# lvs WARNING: Duplicate VG name VolGroup00: ...
2
votes
2answers
323 views

httpd service is not starting automatically

I compiled Apache and PHP from source on a RedHat server, but in doing that, I forget to install the httpd as service. Files used to compile Apache 2.4.7 Command used to compile Apache 2.4.7 ...
1
vote
0answers
152 views

VPNC cisco + quick mode response rejected error

I installed a vpnc on my Linux red-hat machine version 6.3 Most of the cases vpnc work well ( connecting to gateway customers by vpnc ) But against some particular customers ( Cisco gateways ) , ...
-1
votes
2answers
71 views

my master dns is running on Debian, can i configure rhel as slave DNS

I need to configure a slave dns on RHEL 3 , but my master DNS is Debian 7, is it possible to configure dns on such manner if possible kindly help me on this
0
votes
2answers
108 views

RHEL5: htop shows empty command-column

When issue the command htop on my RHEL5 box I get a normal view, however when I scroll down I have several "blank" command ranges as can be seen here: Can someone explain me how this ...
-1
votes
1answer
81 views

vsftpd anonymous directory shows nothing

I'm using vsftpd on Red Hat Linux. I want to enable anonymous user login. After all the configurations, I can login without username and password. However I see nothing in the user's home directory. ...
3
votes
1answer
507 views

Can we set ulimit in /etc/sysconfig/init file to apply the value at boot time

I need to have the ulimit value set at the boot time to all my services. I have values set in /etc/sysconfig/limits.conf but these values are not applicable during the boot time and it takes 1024 as ...
7
votes
2answers
744 views

How can I mirror a yum repository but download only the newest versions of each package?

I would like to mirror the following Yum/RPM repositories at http://yum.puppetlabs.com/ : http://yum.puppetlabs.com/el/6/products/ http://yum.puppetlabs.com/el/6/dependencies/ ...
3
votes
2answers
285 views

Installing multiple mongoDB versions on the same server

I have installed a 2.4 mongoDB version and I'd like to compare against the recently released 2.6 version. I want to know if possible to do a clean new install rather en an update to see if those two ...
0
votes
1answer
643 views

JBoss EAP 6.2 on RHEL 6: ./bin/init.d/jboss-as-standalone.sh hangs while calling via SSH

I'm using jboss-as-standalone.sh to manage JBoss EAP standalone as a service. I can start/stop the service with "service jboss-as-standalone.sh start/stop" while I'm on a terminal. But I would like ...
1
vote
1answer
85 views

How to compile sources into rpmbuild BUILDROOT?

All the information I can find about building RPMs seems to pre-date CentOS 6, and as a complete package-building novice running CentOS 6.5, I'm rather stuck. All the tutorials I've read mention one ...
0
votes
1answer
25 views

redhat-idm-console removing or adding accounts takes a longtime to take effect

Using the redhat-idm-console tool often takes a long time to allow the changes to be reflected in directory services. Closing Firefox and clearing the cache does not seem to have any noticeable ...
16
votes
4answers
3k views

Common wisdom about Active Directory authentication for Linux Servers?

What is the common wisdom in 2014 about Active Directory authentication/integration for Linux servers and modern Windows Server operating systems (CentOS/RHEL-focused)? Over the years since my first ...
-2
votes
1answer
316 views

How to access device on switch from another computer? [closed]

I have several computers all connected to the same switch. Some computers are running RHEL, one is running CentOS. The CentOS machine is connected with NIC 2 to switch 2, and NIC 1 to switch 1. The ...
1
vote
1answer
138 views

After upgrading openssl, unable to bind to server: Can't contact LDAP server

It was working like this, in /etc/openldap/ldap.conf URI ldap://127.0.0.1/ BASE dc=example,dc=com TLS_REQUEST never TLS_CACERTDIR /etc/pki/tls/certs I was able to connect our secured ldap server. ...
0
votes
0answers
2k views

Stuck at grub prompt after a default CentOS 6 installation

I am having a very strange problem installing CentOS 6 that I've never encountered before. I've followed these same steps thousands of times before, but within the past couple weeks I've had two ...
0
votes
1answer
56 views

Change VNC password without losing the session

I have a VNC session to my server(linux), but now i need to change their password, however, i cannot lose that session. If I use this command: vncpasswd [passwd-file] Does anyone know if I will ...
2
votes
0answers
25 views

PIV authentication on redhat

I'm looking for a solution, or set of technologies, (etc) - for setting up a mixed (win 7, rhel 6.5) network with centralized login using smart cards (PIV). I know that this is possible using a ...
6
votes
1answer
128 views

RHEL6 Keeping 1 old kernel and security

I have my RHEL 5&6 servers set to keep 1 old kernel after updates, I do this in case I need to recover the system for any number of reasons. My question is related to security of the system when ...
0
votes
3answers
311 views

Yum update problems on AWS with missing requirements and duplicate sendmail

I am running an AWS VM and tried: sudo yum update Result: Error: Protected multilib versions: sendmail-8.14.4-8.12.amzn1.x86_64 != sendmail-8.14.4-7.9.amzn1.i386 You could try using ...
0
votes
1answer
123 views

Adding Reply-To header using Postfix if it does not exist in the mail headers

I would like to add a Postfix re-write rule to insert a Reply-To: header if there is not one already defined. This server is a web server with PHP and Perl scripts, we do not want the mail sent from ...
0
votes
1answer
500 views

How to troubleshoot an unexpected Linux shutdown

I have two RHEL6.3 servers that just shutdown at the same exact time (25 seconds apart) for no apparent reason. They're on conditioned power, along with a number of other servers that didn't shut ...