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Questions tagged [centos7]

CentOS is a Linux distribution standing for "Community ENTerprise Operating System" and is a rebuild of "Red Hat Enterprise Linux" (RHEL), belonging to the same company that distributes RHEL (Red Hat, Inc.). The "CentOS7" tag refers to versions 7.x-xxxx of CentOS, working only on 64-bit hardware. ...

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15 views

Compile FFmpeg with libzvbi CentOS 7

I am trying to compile FFmpeg with Libzvbi enabled, even though I installed zvbi, I keep getting this error: ERROR: zvbi-0.2 not found using pkg-config This is how I installed zvbi : curl -O -L ...
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0answers
13 views

Should I be running docker bridge0 on the same subnet as my docker host?

I have decided to run some docker containers on my home net using a custom (user-defined) bridge interface. I gave the bridge a static IP on the same network as my docker host. The docker host's eth0 ...
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1answer
20 views

ipv6addr_secondaries not properly working centos7

Hello I tried to configure additional ipv6 addresses on my centos 7 server but it seems different from centos 6. this used to work on my centos6 server BUT NOT ON my CENTOS 7 IPV6ADDR_SECONDARIES="...
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1answer
21 views

CentOS 7 iptables output does match output of firewall-cmd

Output of iptables -L -v -n does not match firewall-cmd --list-all-zones. Specifically, I'm looking for the forwarding rules I have in place for two virtual machines. They can be clearly seen with ...
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0answers
34 views

In postfix can I add message-id to another header?

I'm trying to PREPEND the message-id on another header using variable for example. /^From:/ PREPEND VAR_Message-id is this possible. excuse my ignorance i'm new to postfix
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1answer
22 views

RewriteEngine rules ignored by Apache on SSL

I have a working Apache setup on CentOS 7.6 using the standard Apache 2.4.6-88 package, using HTTP. I am trying to enable HTTPS on the server, and everything works, except for my RewriteEngine rules. ...
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0answers
38 views

IP forwarding between two virtual machines on KVM

Suppose there are 3 machines. Two virtual machines and a physical host machine. A bridge (br0) is setup on the host machine and the two virtual machines each have a NAT to br0 setup. Virtual Machine ...
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0answers
29 views

How to use virtual IP for FTP server outbound connections

I'm running a VSFTPD server and I have a problem to receive data. Client requires ACTIVE MODE for transfers and is connecting to the virtual IP, but when VSFTPD connects back to client IP and PORT for ...
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0answers
8 views

CWP issue after update to 0.9.8.752 [on hold]

I was updated my CWP to latest version and there is a big change !!! The Apache Settings section replaced by WebServer Settings with new options and i can't find my Apache v-hosts any more What ...
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1answer
11 views

OfflineUncorrectableSector & CurrentPendingSector emails - what should I do?

Running Centos 7: I've just done a yum update followed by a reboot on one of my servers, and when it came back up I got two emails: First: OfflineUncorrectableSector Device: /dev/sdb [SAT], 28 ...
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2answers
86 views

Unable to install PHP 7.3 on Centos 7

I have a server currently running CentOS 7.6 and PHP 7.1.25. I want to update my PHP version to 7.3 (released on 6 Dec) but I'm having some troubles. I followed this guide but when I run yum update, ...
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20 views

Server failed to reboot after cpanel update it boots to grub>

I rebooted my server after a cpanel update but it didnt reboot ... my server is with OVH and they reported the following: Following your reboot, our monitoring system detected your server as offline....
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0answers
20 views

Centos 7.3x & 7.4x VM's fail to bringup login service and network manager after a yum update and restart

I'm running into an odd problem that I've never encountered before. On any of our Centos 7.3x or 7.4x after I do a yum update and restart the VM will eventually come back up, but hangs during the ...
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0answers
14 views

Distribute IRQs across multiple cores

I have a centos vm and I am trying to distribute the softirqs across multiple cores. I have modified the smp_affinity_list from 3 to 0-3 but instead of balancing the interrupts, it just moved the ...
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0answers
14 views

Glassfish.service failed on CentOs 7 after 3 seconds

We have been running Glassfish Server on CentOs 7 for a while now. All of a sudden it just stopped working. When I ran systemctl status glassfish.service -l I got the following; systemctl status ...
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0answers
20 views

Can't restore PV metadata

I have a corruption problem on a PV (within a multipath, don't know if it matters). The base system is a CentOS 7 and the volumes are hooked up via iSCSI to an external storage. I found the LVM UUID ...
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0answers
12 views

Email goes to spam using with exim software [closed]

I need your help with configure on exim software. I am currently using exim that come with cpanel, but I am not happy with using exim because the email goes to spam folder. I have got another server ...
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1answer
24 views

MongoDB won't run if dbPath is symlinked

I have installed MongoDB 4.0.4 from the official repo. I followed these instructions. My OS is CentOS 7 and SELinux is in enforcing mode. If I use a dbPath value which is a symlink to another ...
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1answer
56 views

ProFTPd returns “530: Login incorrect.”

There are some weeks that I don't use the FTP server, and now I have tried to connect but it's returning this error. I did some "yum update", but I don't know what else has changed since then. When I ...
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2answers
163 views

Yum can't add rpm repository via yum install command

I have CentOS Linux release 7.4.1708 Linux distro. I need to install some package. The first command to execute is to add repoistory: yum install https://extras.getpagespeed.com/release-el7-latest....
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1answer
59 views

Why is Apache trying to kill a process on startup and why would that cause a failure for Apache to start?

I was installing a new cert like I've done dozens of times before. I copied the names crt, key, bundle files as backup and gave the new files the names of the old files. Then I restarted apache. It ...
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1answer
18 views

HP G8 trays keep on showing disk activity when there should be none

I have a DL380 G8 with a P420i raid controller. 2 RAID1 logical drives have been setup - one containing the OS (CentOS7) and one made of a single almost empty partition (contains a single tiny text ...
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1answer
89 views

Yum update unable to find package, that is in repo list

When trying to run sudo yum update I get --> Finished Dependency Resolution Error: Package: cinnamon-3.6.7-3.el7.x86_64 (@epel) Requires: caribou(x86-64) Removing: caribou-...
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0answers
93 views

Centos 7 realm join and sssd logins not working after update from 7.5.1804 to 7.6.1810

I was configuring a new server from a Centos 7 release 7.5.1804 template and ran a test join to our AD domain. Everything was fine. I ran a yum update and updated the O/S to release 7.6.1810, ...
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1answer
104 views

NVIDIA-SMI can't communicate with NVIDIA driver

Problem description I am trying to set up a centos-7 GPU (Nvidia Tesla K80) instance on Google Cloud, to execute CUDA work. Unfortunately, I can't seem to properly install/configure drivers. Indeed,...
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1answer
54 views

Intel Turbo not working in CentOS 7 with Intel Xeon Scalable (and other newer CPUs)

We have a small cluster where I work, that I look after. The nodes run CentOS 7.5. Our older nodes use Xeon E5 v4 CPUs, mostly the E5-2699 v4. With the older nodes, the Intel Turbo Boost works ...
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2answers
52 views

FTP: Jail user to Home folder

Using Centos7 and vsftpd I would like to chroot the user "testftp" to his home folder /home/testftp. The client uses WinSCP on Windows. The user testftp can reach the server and connects initially ...
4
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1answer
44 views

locked out of ssh and sftp and require new password

I have tried to log into my Google Instance running "CIS CentOS Linux 7 Benchmark Level 1" and get the following message. It's asking for the current password which we don't have. Is there a way to ...
1
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1answer
135 views

PHP 7.2 yum installation on Centos 7 misses libargon2.so

Command: yum install php php-cli php-gd php-curl php-mysql php-zip php-fileinfo php-mbstring Gives following error: Error: Package: php-cli-7.2.12-1.el7.remi.x86_64 (remi-php72) Requires:...
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0answers
11 views

keepalived HA: float VIP when a service failure doesn't work

As an HA implementation, I have configured keepalived in CentOS7. 1st CentOS BOX, Having httpd -80, Mysql - 3306 and Keepalived + LVS (ipvsadm) as the MASTER, Priority 101 2nd CentOS BOX, Having ...
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1answer
60 views

System Resource Usage High due to http Hack Attempts

I have WordPress website created in a Linux box with Apache as webservice and MySQL serving database. Recently hackers is trying to hack website using POST methods. Those requests are denied by the ...
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2answers
21 views

Using SQLite through PHP without completely disabling SELinux

I'm trying to access an SQLite file on a CentOS7 box using PHP and the PDO library. I was getting read-only errors just like this question - https://stackoverflow.com/questions/3319112/sqlite-read-...
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1answer
46 views

Openshift installation playbook failing

I'm trying to install 2-node cluster with origin version 3.10 (one master, one node). Playbook fails on task openshift_control_plane : Wait for control plane pods to appear Initialization ...
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0answers
13 views

mariadb-libs is needed by turnserver

I am trying to install TURN server on centOS7 for one of my webrtc application. This TURN server would be used in a video calling application. I had followed below steps: yum install -y make gcc cc ...
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0answers
11 views

Firewalld configuration on a box with 4 nics one fw zone each

I'm facing a configuration (I think) problem on some boxes that have 4 nics in order to transmit/receive on 4 different lans. Specifically those boxes are rhel 7.5 and each one hosts an Apache Kafka ...
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0answers
64 views

Postfix modify headers

I need some help with modify on postfix headers. I would like to remove the strings localhost and (Postfix) on the header as I want to replace it with mydomain.com and for Postfix string I want to ...
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0answers
624 views

SSL issues “Peer's certificate issuer has been marked as not trusted by the user.”

We have a public facing development server that requires SSL for a particular function. Yet EVERYTHING that uses SSL in any form returns curl: (60) Peer's certificate issuer has been marked as not ...
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2answers
106 views

Configure SELinux to allow all outbound tcp and udp ports

I have an application that potentially connects to any outbound, remote tcp/udp port. As a result, I want a way to allow all outbound tcp and udp connections. I understand that you can use a ...
0
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1answer
62 views

Is Committed_AS in /proc/meminfo really the correct number for allocated virtual memory in Linux? It is less than MemTotal-MemAvailable here

I am collecting numbers for monitoring HPC servers and am debating the policy for handing out memory (overcommit or not). I wanted to show users a number on how much virtual memory their processes (...
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0answers
25 views

allow ftp to access .htaccess files

First I am a linux newbie. This maybe a very simple thing, but for the life of me I can't seem to figure it out. I inherited a server (ubuntu GUI) running a single website + forum. It is currently ...
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1answer
62 views

Received empty response from Zabbix Agent at [X.X.X.X]. Assuming that agent dropped connection because of access permissions

I have a Zabbix configuration problem here in the company a few days ago. I'm having this error on the hosts page in the Settings portion. I have already done several tests, being: Agent and Server ...
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0answers
31 views

Delete RAID 1 partition and grow another

I want to remove a software RAID 1 partition (md0) and grow the (md2) partition with the empty space without loosing md2 data. I was searching around but I'm not sure which is the better way to ...
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votes
1answer
42 views

How to upgrade to Centos 7.3 to CentOS 7.5.x?

I need to update my VM to CentOS 7.3 to 7.5. What is the standard procedure to upgrade the server?.
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votes
0answers
20 views

Change the headers in postfix

I need some help with configuring on my vps. I am using postfix software to send the email and when I send the email from my server using PHP, I can see the localhost in the header which it show like ...
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0answers
38 views

dkim not reading conf file?

i'm bit of a newbie. I am getting dkim=fail. The reason i say conf file not being read is that if i change to simple:simple, email source is showing c=relaxed/relaxed. So not sure whether that shows ...
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0answers
14 views

Create “Default keyring” from command line on CentOS 7

I have a CentOS 7.4 machine that I need to start in kiosk mode. There is a touch screen attached to that machine and on boot, google chrome must start in full screen and load a certain web page. What ...
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0answers
13 views

ldapsearch hangs on ldap_int_select in some of my servers

I'm running open ldap on cent os 7. When I run ldapsearch in some of my servers it hangs on ldap_int_select: ldap_create ldap_url_parse_ext(ldap://{LDAP_SERVER_ADDRESS}:389) ldap_sasl_bind ...
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votes
1answer
21 views

crond service running after removing the entry in crontab

I removed the entries in crontab for root and still, I can see the scripts running tail -f /var/log/cron. How can I remove those entries. Output of cron log: CROND[2736]: (root) CMD (/home/centos/...
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2answers
61 views

chain two commands once the first one is finished [closed]

I want that once the decompression is finished the .tgz is erased I am trying with this: tar -zxvf glftpd-LNX-2.08_1.1.0g_x64.tgz $$ rm -rf glftpdLNX-2.08_1.1.0g_x64.tgz
1
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1answer
41 views

Why isn't NFS over SSH transparent to NFS?

NFS over LAN seems to work as expected - one downloads nfs-utils rpm, makes a share, modifies ownership and SEL, allows nfs in firewalld, launches nfs-server daemon, and everything is good to go. ...