Questions tagged [rhel7]

Red Hat Enterprise Linux version 7 is a Linux distribution sold by Red Hat, Inc. for the enterprise market. It is used for both servers and desktops. Although the binaries are not freely available, the sources are, and so there are numerous projects which provide compatible rebuilds of RHEL, such as CentOS and Scientific Linux.

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14 views

Logging to /var/log/messages stopped. How to turn it back on?

while frantically trying to resolve a time sync issue, I somehow must have turned off some (but not all journalling). /var/log/messages ends last eventing, and journalctl -eu chronyd doesn't show any ...
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7 views

Spacewalk client's status shows system is up to date but yum check-update on client shows multiple patches

I have added the RHEL7 client to spacewalk (version 2.10 nightly). My client’s status is showing as “System up to date” but yum check-update on the client shows multiple updates. Any idea how I can ...
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1answer
34 views

Sudden system time jumps on VM

for the second day in a row the system time on a VM I'm in charge of jumped forward by exactly 90026 seconds. In the afternoon or evening, not connectable to any cron maintenance job which typically ...
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18 views

Apache 2.4 mod_ldap “Require ldap-group” not working

I have a RHEL 7 server running Apache 2.4 with multiple vhosts. I am having an issue with basic auth using mod_ldap to authenticate against Active Directory. My vhost config looks like this <...
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1answer
34 views

Sendmail not relaying to 127.0.0.1:25 instead of smart host

I am trying to use a SMART_HOST on RHEL7 with sendmail. I have configured sendmail.mc as follows: define(`SMART_HOST', `my.relay.com')dnl After compiling I have this line in sendmail.cf: # "...
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Systemd and Disaster-Recovery Stand-By systems

We're using systemd to run various services in production. (Duh...) We're building out a matching "disaster-recovery" site, which will have the same application installed -- with the same ...
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27 views

Splunk causing a Kernel fault [closed]

The question is related to Splunk Enterprise 😊 We have recently installed Splunk enterprise with: 2 Indexers in Index Cluster (replication factor of 2 set for redundency). These are (for those who ...
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46 views

Systemd: Type=forking vs. PIDFile

After the Unix admins enabled the systemd --user for our application's account, I created the following service-template (itself generated from an Ansible-template first, as you may notice -- because ...
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28 views

Copying files from remote, limited to 1k Lines and with compression

I want to fetch files from several remote machines. I want only files that match a specific regex and I want to keep the directory structure. Considerations: The files I want to fetch are plain text ...
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32 views

apache Defining worker for balancer error

I am trying to run <VirtualHost *:443> LogLevel debug <IfModule mod_proxy.c> ProxyPreserveHost On <Proxy balancer://test0102> BalancerMember ...
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Puppet Module File Resource Copy From Network Mount

I'm using RHEL Satellite 6.6 with puppet 5.5.12. I have a module which, among other things, copies a file from a network mapped folder to the local drive, then executes it. When I run the module ...
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docker-proxy port 5000 not obeying firewall-cmd rules

I am running Red Hat Enterprise Linux 7.9, where I'm trying to block docker-proxy TCP port 5000 via firewall-cmd. I am using the default public zone as the only active zone and have tried the ...
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2answers
69 views

Apache : socache_shmcb:error AH00820: shared memory segment too small

For the context : Apache HTTPD 2.4.6-90.el7 on RHEL 7.4 I had a AH01873: Init: Session Cache is not configured [hint: SSLSessionCache] warning in the logs, so I added to the configuration : <...
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How do I update DNS entries on a Weblogic cluster?

Back story The network team in my environment is trying to retire an old DNS server. They actually did it assuming nobody was using it at the time. Two of my applications, both running on Weblogic/...
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23 views

Is there anything else like NFS on OEL8?

I want to share a volume from an OEL8 server to two other OEL8 servers and let them read/write to the volume simultaneously. I've been asked to check if there are anymore secure methods/technology in ...
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23 views

How to get UDEV to create device node after device authorization?

So I'm in an environment where management wants to block use of all USB devices except for those authorized. I have two possible solutions: In a UDEV rules file, put rules for the devices we want to ...
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1answer
26 views

ip route keep changing after network restart

Every time I restart the server or "systemctl restart network" I have to add the static routes Rhel 7.8 ip route add 192.168.1.1 dev ens192 proto static scope link metric 100 ip route add ...
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1answer
31 views

Quickly install multiple puppet modules from directory

Is there a way to install multiple puppet modules from a directory in one command? I have a directory containing multiple puppet modules in tar.gz form downloaded from the forge, and I need to install ...
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40 views

DHCP conf syntax

can someone help me figure out what the syntax issue is here. This block works in RHEL6 dhcpd.conf (dhcp-4.1.1-63.P1.el6_10.x86_64) file but is throwing an error when I am upgrading to RHEL7 (dhcp-4.2....
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Cannot Reproduce “NETDEV WATCHDOG: (enic): transmit queue 0 timed out”

We are running RHEL 7.9 on Cisco UCS B-Series blade servers, and are currently experiencing the issue outlined in the following KB: https://access.redhat.com/solutions/4126461 . To summarize the issue,...
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Account locked after postgresql 10.15 Installation in RHEL 7.5

I have installed the postgresql 10.15 in RHEL 7.5 and have also created the account with postgres as user name and password. The installation is completed but I am unable to access the database as the ...
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1answer
184 views

needs-restarting hangs on RHEL7

On RHEL7, running the command (as sudo) needs-restarting hangs, as does needs-restarting -s while needs-restarting -r comes back within 2 seconds. By "hangs" I mean that it takes a really ...
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HTTPD with SSL startup fails with missing PAM library error

I am configuring SSL to run with Apache 2.4 on RHEL7. As expected, httpd starts successfully before SSL configuration is added. After adding certificates and configuration files, startup fails with ...
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0answers
9 views

is it possible to append the filename to the job-id of all jobs submitted to a CUPS printer?

as the title suggests, I want to append the filenames of files I print to the actual job-ID in CUPS. so if for instance i ran: lp some-file.pdf the job-ID would be: d00001-001somefile.pdf The reason I ...
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2answers
64 views

OpenFire restart runs setup process again and again

I am new to OpenFire and I am using the version 3.9.3 The problem is that every time I restart OpenFire, I must go through the same setup process. In my case, I would like not to go through it every ...
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1answer
64 views

How do i create Symlink to /var/log/myapp to another mount?

I am not very familiar with unix terminologies but I have a requirement where I have installed Gitlab on one of my RHEL server. By default the installation and log goes to /var/opt/gitlaband /var/log/...
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1answer
27 views

Red Hat 7 reset password asks for for Root password

I am trying to reset the root password on a rhel 7 machine Following one of the many articles online I first hit 'e' to get into edit mode However after I do that is asks for a username and password? ...
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1answer
60 views

Is it possible to control the system only from remote connection using VNC Server?

I have a Linux computer with VNC server running in it. When I connect to that computer remotely from another computer using a Remote Desktop Viewing application, the main computer display is still ...
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0answers
73 views

RHEL 7.8 (STIG'd (Locked-Down Image)) targetd faux-iSCSI front-end for Initiators — Can't log in with CHAP from RHEL 7.8 Initiator

Here's my scenario: Target: RHEL 7.8 (security lockdowns) using targetd/targetcli to configure /dev/sdb (100GB) presented as a block device and created as LUN0 Target(new): RHEL 7.8 (NO SECURITY ...
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1answer
899 views

NTP enabled is no but sync is yes on RHEL7

How can it be synchronized but not enabled? Redhat 7.4 Date and time are right. ntpq -p shows it's connected to a remote ntp server. Systemctl status ntp shows its enabled. Nothing in /var/log/...
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1answer
670 views

Cannot get past “realm: Couldn't join realm: Not Authoerized to perfrom this action”

- name: Add targeted machine to domain become_user: <local user> expect: command: /bin/bash -c "/usr/sbin/realm join --user={{ prompted_user }}@domain.com domain.com responses: ...
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1answer
497 views

Red Hat - Berkeley DB library - Corrupted DB

I am getting the below errors while executing the yum or rpm command. error: rpmdb: BDB0113 Thread/process 22448/139817567954752 failed: BDB1507 Thread died in Berkeley DB library error: db5 error(-...
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2answers
80 views

Problems applying subscription to RHEL 7.8

I have an account on access.redhat.com and hence downloaded RHEL 7.8 under Developer Edition. But after installing it on laptop, when I try to register the product it throws the following error: HTTP ...
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1answer
266 views

AWS RHEL subscription Vs normal AWS subscription

On the new RHEL server on AWS, there is no need to subscribe our own red-hat subscrition to install the package as it's already subscribed by AWS side. I need to know the difference between the AWS ...
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2k views

How to Disable TLS 1.0 and 1.1 to enable only TLS 1.2 in Apache 2.4.10 & openssl 1.0.2k fips & RHEL 7

Tried to enable TLS 1.2 in /conf/extra/httpd-ssl.conf in Apache 2.4.10 as below combinations. SSLProtocol -all +TLSv1.2 After restarting httpd service, getting error 'illegal Protocol TLSv1.2' as ...
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1answer
66 views

What is the recommended fs.file-max value on redhat7

How to calculate fs.file-max? what is the recommended value for rhel-7 and how to calculate the correct value?
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1answer
120 views

yum-cron enabled by default on GCP

Any one has any idea why Google or Redhat has enable yum-cron on RHEL7 VMs on GCP. yum-cron-3.4.3-167.el7.noarch is preinstalled and is enabled on the VM. Client never wants their systems to be ...
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0answers
31 views

Install Linux on a second disk from an already running Linux (RHEL 7.8) instance

I am trying to mount a second disk on a running Linux (RHEL 7.8) AWS instance, install a customized bootable Linux environment to it, and then change that disk to an AMI so we can boot new Linux ...
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2answers
81 views

RHEL 7 security patch installation from tar

Novice Linux guy here I have a huge (5G) linux-security-patches tar. Upon extracting, I see its got loads of rpms. What is the most efficient way to install them all ? Also, is it same as installing ...
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1answer
289 views

HAProxy 503 Service Unavailable No servers avalible to handle this request

Hey I seem to have issues with HAProxy but can't seem to find the root of the problem. Setup: 1 Load Balancer 3 Servers (Splunk Search Heads) Both Load Balancer and the 3 servers are only accessible ...
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2answers
232 views

yum update doesn't update the package [duplicate]

I'm on RHEL 7. Security team suggested me to update curl and dbus packages. When I try yum update , it says Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager This ...
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38 views

How can I add a library search path to an executable running with a capability?

I have an application that needs to run with the CAP_NET_BIND_SERVICE capability so that it can open a low port (502 for a TCP/Modbus server). It comes bundled with a set of .so files that it needs to ...
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24 views

Stretched ESXi cluster with HA enabled has two different gateways at each site

The hypothetical situation is as follows: There are two adjacent sites where a spanned Vlan is created, lets call the sites "Albuquerque" and "Mesa". The sites each have their own ...
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1answer
707 views

Are mod_wsgi, python3-mod_wsgi and libapache2-mod-wsgi-py3 the same thing? Do i need just one for Django on RHEL 7.6?

I see a couple of tutorials mentioning the Gate Interface specific to python3.6 for Ubuntu -- libapache2-mod-wsgi-py3 as opposed to just mod_wsgi in RHEL's case. Should i be worrying about looking for ...
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1answer
1k views

BAD PASSWORD: The password is too similar to the old one using Completely different Password

I am running RHEL 7 and not matter what password I enter I get BAD PASSWORD: The password is too similar to the old one using My current password is something similar to PasswordAABCCD1! It has ...
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5answers
4k views

Not able to install docker on redhat

I searched for many links, they are showing only for centos even though the title is for RHEL also. My OS details: cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.4 (Maipo) uname -...
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1answer
255 views

the same ssh rsa key does not work in Ubuntu(WSL) while from RHEL7 it works

I'm trying connect from Ubuntu(WLS) to RHEL7 server using ssh RSA key. And it does not work, while the same key when used from another RHEL7 host works. I checked all file permissions There is no &...
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1answer
116 views

How can I read explicit https proxy CA certificate on RHEL7?

I have server behind explicit https proxy with SSL decryption but I don't know its certificate and I have no way to obtain it from human being. Is it possible to retrieve https proxy certificate from ...
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23 views

Getting OOPS when trying to install Rhel 7.8 on dell laptop

I've upgraded a Dell Inspiron 15 to 32GB RAM, so I could use Red Hat on it. However, when I try to boot from a USB that contains rhel 7.8 DVD ISO, I get the following OOPS: Can rhel 7 be installed on ...
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134 views

fence_gce is not working as expected on GCP?

I have configured vanilla cluster with fence_gce. stonith_rhnfs01 is on node1 and stonith_rhnfs02 is on node2. Now I bring down node2. The stonith_rhnfs01 was already on node1 & stonith_rhnfs02 ...

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