Questions tagged [centos6]

CentOS was an Linux distribution standing for "Community ENTerprise Operating System" based on "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS. CentOS 6 was released on November 27, 2011 and reached End Of Life on November 30, 2020.

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Low Entropy on Container

I am thinking my entropy level may be low? $ cat /proc/sys/kernel/random/entropy_avail I am around 132-178 on average. Pool size is default 4096 (this is a container on a virtualizer by the way). ...
Gordon Snappleweed's user avatar
5 votes
0 answers
457 views

udev attribute cannot be set on boot

I'm setting up SR-IOV for my Intel I350 igb on CentOS 6.6 (2.6.32-504.el6.x86_64, udev 147) using udev. I have modified a rule I used in CentOS 7 (3.10.0-123.el7.x86_64, udev 208). When I do "udevadm ...
Angelos's user avatar
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4 votes
3 answers
4k views

Redis: Error moving temp DB file on the final destination: Operation not permitted

I have a nodeBB install which relies on Redis as the data store. Its just a test install at the moment while I iron out any problems. The Redis instance stayed up for a few days but then fell over ...
codecowboy's user avatar
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3 votes
0 answers
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Chroot SFTP Group

I have a CentOS 6.9 file server set up. Everyone in the company is given access as a member of the staff group. They're dropped into /home/sharedfolder when they connect, however they're able to jump ...
Gray Loon's user avatar
3 votes
1 answer
14k views

packets transmitted, 0 received (no internet connection) on centos 6.6 vps

I have centos 6.6 vps server. When I use command: yum update get error: Error: Cannot find a valid baseurl for repo: base when I check for ping and use command: ping -c4 google.com get error: ping: ...
mohsenJsh's user avatar
  • 139
3 votes
1 answer
987 views

Install CentOS 6 on HP ML 150 gen9 server with b140i raid controller

I have HP ML 150 with Smart Array b140i controller. I want to install CentOS 6.6, but the driver isn't built-in the ISO. I have download the Driver and install in the USB(dd). I need the command for ...
Ashraf Farouk Hilal's user avatar
3 votes
0 answers
673 views

SMB3 on centos fluctuating read/write speeds

I recently got two 10GbE cards and have been testing a SMB share from centos 6.4 with it as the SMB server. The SMB client end is a Mac and I don't seem to be maximizing the network speed because it ...
Barry Liu's user avatar
3 votes
0 answers
11k views

curl: (1) Protocol "https" not supported or disabled in libcurl

I've a CentOS6 vps on which O trying to access https url through curl it gives not supported error # curl https://google.com curl: (1) Protocol "https" not supported or disabled in libcurl Anyone ...
Faizan's user avatar
  • 131
3 votes
0 answers
215 views

Centos 6.6 ignores inittab – always boots to runlevel 3

Well, like the title says, I have inittab set to id:5:initdefault but it always boots to runlevel 3 (as confirmed by "runlevel" and "who -r") Typing 'init 5' brings the GUI up. Also, appending '5' ...
Danny's user avatar
  • 245
3 votes
0 answers
4k views

Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory

My server on Centos 6.6 went down Phusion Passanger refuses to start of with following error: stdin: is not a tty /etc/init/delayed_job.conf: line 7: description: command not found start: Unable to ...
skatkov's user avatar
  • 33
3 votes
0 answers
821 views

High network softirq requests for kernel 3.10 under a lot of traffic

We have been experimenting rolling out 3.10 series kernel that's provided by centos via the centosplus repo for v6. We have been noticing something interesting where under the same load the load for ...
Mike's user avatar
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3 votes
0 answers
4k views

dhcping "no answer" on CentOS 6.4

I installed a DHCP server (yum install dhcp) and this is my conf: # create new # specify domain name option domain-name "mydomain.name"; # specify DNS's hostname or IP address option domain-name-...
Kev's user avatar
  • 984
2 votes
1 answer
2k views

changing /proc/sys/vm/overcommit_memory broke my server

After changing it to 2 it closed my sftp session, and I cannot connect via ssh or sftp although it kept my session open. Whenever I run a command that isnt cd, I get -bash: fork: Cannot allocate ...
Armani Rodriguez's user avatar
2 votes
0 answers
294 views

postgres 9.4 hangs when starting as service during centos 6.9 boot

postgres 9.4 hangs when starting as service during centos 6.9 boot. The server was running well for months, and then we perform a restart and it hangs on starting postgres 9.4 as a service. The disks ...
edbras's user avatar
  • 121
2 votes
0 answers
545 views

Rsyslog doesn't process log queue from disk

We're running rsyslogd on CentOS 6. We have log forwarding to a central server but the connection was broken due to missing certificates. Now we have processing working again but we have almost 1G of ...
Kristofer's user avatar
  • 301
2 votes
0 answers
945 views

Postfix : Rate limit outgoing mail by mx of recipient and sender

Been learning Postfix and trying to setup my own mail queue server for newsletters (no mailchimp or sendgrid). I'm stuck on the last thing I wanted to implement, which is delays/queue. I found a ...
Darius's user avatar
  • 345
2 votes
0 answers
7k views

Apache/CentOS/RHEL: Connection refused: proxy: HTTP error

I'm in the process of migrating some applications to a new production server. The idea is to keep the same URLs for the applications by defining ProxyPass and ProxyPassReverse directives on the old ...
Didier Ghys's user avatar
2 votes
0 answers
8k views

How to resolve UDP packets being dropped given netstat reporting SndbufErrors

I have a server instance on an OpenStack that at a pretty high load starts loosing UDP packets. I captured all outgoing packets using tcpdump and some of them are missing, even though application logs ...
eddyP23's user avatar
  • 243
2 votes
0 answers
43 views

PostFix/Dovecot new installation on Centos6

I have installed Postfix and Dovecot on my server. It seems to be mostly working - I can send mail from my account to a remote account no problem. My problem is receiving it. When I send an email ...
markt's user avatar
  • 167
2 votes
0 answers
341 views

pureftpd conneting with ftp on terminal but not filezilla

I have a dedicated server with WHM which have installed pureftpd the problem is: $ ftp site.com works alright I can use dir command and see my file list however with filezilla or others like ...
Ebrahim Tahernejad's user avatar
2 votes
0 answers
236 views

Exim Email hacked or Backscatter attack

I have undertaken an Exim Server for a client, this morning I woke up to about 100 bounce backs from Hotmail with the following: Undelivered Mail Returned to Sender Googling I have come across ...
StackUser_py's user avatar
2 votes
1 answer
2k views

DDOS prevention/mitigation on Linux CentOs server using IP tables

One of our servers has generated a 19Gb access.log in the space of about 24 hours and the server went down in this time. We'd like to implement some measures to safeguard against DDOS attacks but ...
zigojacko's user avatar
  • 1,463
2 votes
0 answers
3k views

Circular directory structure

I'm having an issue with a circular directory structure warning produced by du and find on my CentOS servers. I have two FreeNAS servers exporting several datasets via NFS which are mounted on the ...
onlyanegg's user avatar
  • 163
2 votes
0 answers
392 views

How to emulate union mount behaviour with LVM in CentOS?

In short, I want to create a system restore image. My idea with AUFS is like the image below Now, as I require this mount setup at boot-time, I don't think I can do it with fuse and will require AUFS ...
Samik's user avatar
  • 73
2 votes
0 answers
2k views

CentOS won't reboot (shuts down but won't come back up)

I recently encountered a problem with rebooting on my CentOS 6.6 VPS (hosted with Media Temple on their DV Developer service). I discovered that I had some sort of memory leak a few months ago; since ...
missfickleness's user avatar
2 votes
1 answer
198 views

Puppet's issue: Configure WAN interface, reload network in the process result in broken agent's run

A little background: I want to use puppet to fully configure RHEL6 servers freshly after they have been installed with kickstart, the kickstart itself is fully automatic and provide dhcp-enabled ...
its_not_fun_to_be_devops's user avatar
2 votes
0 answers
499 views

Nagios 3.5 can't send notification email despite nagios logs ok / centos6

I spent hours trying to make nagios send email notification. my contact configuration is quite simple : I juste have one : nagiosadmin, and he is the default contact. In /var/log/nagios.log, nagios ...
Enialis's user avatar
  • 43
2 votes
0 answers
554 views

ntpd -gq do not working on CentOS 6.4

when I'm running 'ntpd -gq' from CentOS 5.10 (i686) the time is synced, but in CentOS 6.4 (x86_64) the command gets stuck (I need to stop it using ctl+c). Any idea hoe to fix it? EDIT: iptables -...
User's user avatar
  • 21
2 votes
1 answer
600 views

Can't make Koji Work on A Centos6 server

I setup the koji build environment in a Centos6 Machine server as suggested by the documentation (http://fedoraproject.org/wiki/Koji/ServerHowTo). I could properly access the Koji Web using HTTP, yet ...
Hanynowsky's user avatar
2 votes
1 answer
1k views

libcrypt.a undefined reference to NSSLOW_

We have centos6 6.5 64bit server. It had been setup for 32bit development. Our project is statically linked. A team member installed the most recent openssl, openssl-devel, and openssl-static 64bit ...
PhilC's user avatar
  • 21
2 votes
0 answers
1k views

How to troubleshoot occasional Apache 500 errors?

I have GET and POST requests, both HTTP 1.0 and 1.1, to diverse URLs, mostly running Wordpress(1), which occasionally fail with a 500(2). No user has ever encountered a 500 themselves, nor have ...
Gaia's user avatar
  • 1,895
2 votes
1 answer
3k views

Cloud Server Error - File Does Not Exist: /var/www/html/public

I recently moved a webapp, built using Laravel, to a rackspace cloud server. The homepage resolves just fine as I have the root set in the apache config. However, when a request is made to any of ...
spm's user avatar
  • 21
2 votes
0 answers
644 views

CentOS 6 won't load default (new) kernel, loads (another) older one instead

I am having a weird issue with a CentOS 6 system. I have upgraded the kernel twice now and when I reboot the system it still loads the older kernel. I also had a dc tech watch the screen as it ...
Mike Geise's user avatar
2 votes
0 answers
2k views

How do I configure mod_mono to use ASP.NET 4?

I am running a VPS with Centos 6.3, with WHM 11.34.1 (build 11). I wish to use mod_mono to host an ASP.NET 4 application. (Background: I am rewriting a hobby PHP website in ASP.NET MVC 4, and want to ...
Mike Caron's user avatar
2 votes
1 answer
2k views

Mapping User and Group Ownership through LDAP

I am installing smb 3.5 on a CentOS 6.2 host using smbldap-tools. I've previously installed a similar configuration on RHEL4 using smb 3.0 but CentOS now uses nss-pam-ldapd and nslcd instead of ...
Wes Modes's user avatar
  • 151
2 votes
0 answers
1k views

lvs with NAT routing - horrible performance to one real server

I have an LVS setup with NAT routing and two real servers (as an FYI, we're only routing http on tcp port 80). Currently requests to real server A respond just fine, with page load times of 3-4 ...
Alex's user avatar
  • 31
2 votes
0 answers
1k views

Configure PolicyKit to allow non-local user to perform administration tasks that require authentication

On linux with policykit, if you try to use most GUI-based administration tools over a remote connection, they refuse to authenticate. I believe this is an issue with policykit (for example, system-...
Fake Name's user avatar
  • 587
2 votes
0 answers
1k views

Adaptec 5805 on Centos 6 IRQ 16 error

I'm having a problem with Adaptec 5805 raid card http://www.adaptec.com/en-us/support/raid/sas_raid/sas-5805/ (with two SAS discs in raid) and Gigabyte motherboard GA-H67A-D3H-B3 http://www....
Radek's user avatar
  • 153
2 votes
1 answer
1k views

SELinux - Allow system_u and new SELinux user to log in via SSH

I am new to SELinux and I am still trying to figure out how everything works but my goal is to create a Linux account associated with either system_u or a new SELinux user and try to ssh to my machine ...
Jose's user avatar
  • 21
2 votes
3 answers
6k views

Enabling SOAP for PHP on CentOS 6.6 Server

I am trying to enable SOAP on my server. Soap is installed, but doesn't show up in php_info. PHP Version 5.4.39 System Info: Linux ip-xxx-xxx-xxx-xxx.secureserver.net 2.6.32-042stab106.4 #1 SMP Fri ...
Judson Cooper's user avatar
1 vote
0 answers
75 views

Unable to set up dual monitor in CentOS 6

I need use two different X11 DISPLAYs for two different UI application on two different phisical monitors. Each application on each monitor. Configuration: VDI output: Acer K192HQL HDMI via VDI ...
Olga Pshenichnikova's user avatar
1 vote
0 answers
1k views

Unable to Downgrade OpenSSL from openssl-1.0.2k to openssl-1.0.1e-58 due to openssl-libs-1:1.0.2k-25.el6 dependencies

Due to issues with old CentOS6 machines and the Let's Encrypt root certificate that recently expired I found a solution online which involves installing a Patched version of openssl-1.0.2k from ...
ItsJustMe's user avatar
  • 1,011
1 vote
1 answer
455 views

How to delete an inactive RAID array - Centos 6

I have recently resized a logical volume group and a logical volume to fit into a RAID-0 configuration on Centos 6.10 system. Everything seems to be working fine. However, the disk utility shows two ...
Jack BeNimble's user avatar
1 vote
1 answer
5k views

Connection to Windows SMB share works through smbclient, fails to mount via mount.cifs

I'm trying to access a Windows Server 2019 share (inside a domain) from a CentOS6 host. I can browse the share via smbclient, but mounting fails: Status code returned 0xc000006d ...
dkd6's user avatar
  • 165
1 vote
0 answers
860 views

Changed hostname, openssl s_client not working

I changed a CentOS 6 GNU/Linux hostname, and now everything is perfect regarding the new hostname. But when executing openssl commands, such as: # openssl s_client -CApath /etc/ssl/certs -showcerts -...
HeCSa's user avatar
  • 36
1 vote
1 answer
572 views

How to disable Meltdown and Spectre patches in Centos 6?

I wondering how you can disable the Meltdown/Spectre patches in Centos 6? Various tutorials refers to Grub2 and recompiling, but in Centos 6, I do not have this. I can edit the grub.conf file in /...
TheMightY's user avatar
1 vote
1 answer
1k views

OpenLDAP being very slow

I've inherited an OpenLDAP installation which suddenly seems to be extremely slow to respond to queries, breaking many client applications. I've checked the basics; server has plenty of memory free, ...
anksil's user avatar
  • 11
1 vote
0 answers
128 views

autofs ssh fuse and permissions issue

I have a mounted remote backup space on a Centos 6 to perform remote backups..which are doing fine.. without issues My /etc/auto.master file: /- /etc/auto.mymount uid=0,gid=0,--ghost My /etc/auto....
Grashopper's user avatar
1 vote
1 answer
8k views

"Cannot set device ring parameters: Operation not supported"

I'm trying to change the RX and TX for an HP BL460C server by using ethtool and get the following: ethtool -G eth0 rx 4078 tx 4078 Cannot set device ring parameters: Operation not supported My ...
rahrahruby's user avatar
1 vote
0 answers
296 views

Install Zend Debugger or Xdebug for PHP 7.0 on RedHat 6.10 (64bit)

I'm trying to install Zend Debugger or Xdebug on RedHat 6.10 for PHP 7.0. I have tried the Zend Debugger extension for PHP 7.0 provided by Zend.com at http://www.zend.com/en/products/studio/downloads-...
bigtunacan's user avatar

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