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Questions tagged [centos]

CentOS is a discontinued free (as in beer and speech) GNU/Linux distribution that was community driven and based on source code released from RedHat.

CentOS is a discontinued free (as in beer and speech) GNU/Linux distribution that was community driven and based on source code released from RedHat. CentOS aimed to be 100% binary compatible with RedHat Enterprise Linux. CentOS mainly changed packages to remove upstream vendor branding and artwork.

Support & Lifecycle

The final release of CentOS was November 16, 2021 and final EOL date was June 30, 2024.

External Resources:

10680 questions
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When does `cron.daily` run?

When do entries in cron.daily (and .weekly and .hourly) run, and is it configurable? I haven't found a definitive answer to this, and am hoping there is one. I'm running RHEL5 and CentOS 4, but for other distros/platforms would be great, too.
warren
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How can I verify if TLS 1.2 is supported on a remote web server from the RHEL/CentOS shell?

I'm on CentOS 5.9. I'd like to determine from the linux shell if a remote web server specifically supports TLS 1.2 (as opposed to TLS 1.0). Is there an easy way to check for that? I'm not seeing a related option on openssl but perhaps I'm…
Mike B
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How to extend an ext4 partition and filesystem?

I have a 400GB disk with a 320GB ext4 partition. I would like to grow the ext4 partition to use the left space (80GB of free space). +--------------------------------+--------+ | ext4 | Free …
mimipc
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how do you create an ssh key for another user?

I'm trying to create an ssh key for another user. I'm logged in as root. Can I just edit the files generated by ssh-keygen and change root to the user I want?
user962449
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How do you install Node.JS on CentOS?

I've found numerous installation instructions for Node.js but they all seem so complicated -- I'm not a super sys admin but I can get around. I have yum on the system, but I didn't find any node.js packages, and I'm not sure how to compile code on…
qodeninja
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15 answers

Mount CIFS Host is down

I have an issue with a mount point that was previously configured. It shows the folder, but the mount is missing and holds "?" values for size, permissions, etc. So I tried to remount using cifs and the same command from before: mount -t cifs…
Kevin
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9 answers

Allow SFTP but disallow SSH?

I'm starting a very little hosting company for a few friends and little clients, nothing big. I want to give my "clients" the right to manage their files on the server. I hate FTP as it is not secure and it's in my opinion obsolete. So I'd like to…
Tommy B.
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110
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10 answers

How do I update a CentOS server's time from an authoritative time server?

I have CentOS machine and each time I've noticed that the server loses correct time after a while. It is usually behind by several minutes after time passes from having manually set the correct time. Is there a mechanism whereby I can update the…
user111196
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108
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6 answers

"POSSIBLE BREAK-IN ATTEMPT!" in /var/log/secure — what does this mean?

I've got a CentOS 5.x box running on a VPS platform. My VPS host misinterpreted a support inquiry I had about connectivity and effectively flushed some iptables rules. This resulted in ssh listening on the standard port and acknowledging port…
Mike B
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5 answers

Best way to gracefully restart CentOS?

I always used the command: shutdown -r now However, sometimes that causes MySQL issues. What's the most graceful way to restart CentOS? I've seen: reboot and halt How can I gently reboot the machine?
User
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8 answers

Show all users and their groups/vice versa

I know I have existing groups and users but I'm not sure about their association. Is there an shell command I can use to list all users or all groups and a command to list all groups/users for a specified user/group? So something like showusers…
Steve Robbins
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104
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17 answers

CentOS vs. Ubuntu

I had a web server that ran Ubuntu, but the hard drive failed recently and everything was erased. I decided to try CentOS on the machine instead of Ubuntu, since it's based on Red Hat. That association meant a lot to me because Red Hat is a…
DLH
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104
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6 answers

Adding a directory to $PATH in CentOS?

We just got our new server(s) up and we're running CentOS on them all. After successfully installing Ruby Enterprise Edition, I would now like to add the REE /bin (located at /usr/lib/ruby-enterprise/bin) directory to make it the default Ruby…
vonconrad
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7 answers

My /var/log/btmp file is huge! What should I do?

My /var/log/btmp file is 1.3 GB in size. I've read that the file is "Used to store information about failed login". What does this mean for my server? And can I delete this file?
Juddling
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How bad is it really to install Linux on one big partition?

We will be running CentOS 7 on our new server. We have 6 x 300GB drives in raid6 internal to the server. (Storage is largely external in the form of a 40TB raid box.) The internal volume comes to about 1.3TB if formatted as a single volume. Our…
bdemarest
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