New answers tagged centos
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Should I remove ICMP Protocol from firewall rules base on security concern?
There's been many discussions around ICMP allowing leaking type of messages. However, it was strengthen in ICMPv6 which would mean that all the CVE about those messages are probably obsolete (see CVE ...
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0
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katello-agent for CentOS Stream 9?
I just received this message from the Foreman site:
Dirk
Packager
10h
Yes, it will be supported on CentOS Stream 9, but the software must be ready for the newer version of Ruby, NPM, NodeJS, … before ...
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0
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How do I send a window to the back (lower it) in GNOME Shell?
It is disabled by default but a hotkey can be assigned here:
Settings -> Keyboard -> Keyboard Shortcuts -> View and Customize Shortcuts -> Windows -> Lower window below other windows
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docker: Error response from daemon: failed to create shim: OCI runtime create failed
CentOS 7 default kernel (3.10) has some problems with the latest Docker releases.
It needs to be updated to kernel version 5+.
https://forums.docker.com/t/centos7-docker-hello-world-fails/68941/4
I ...
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Accepted
why the result of `yum deplist` and `yum install --downloadonly` is different?
yum install selects all the missing dependencies, taking into account packages installed in the system, and processing all the given packages’ dependencies including transitive dependencies. yum ...
- 370k
2
votes
Accepted
rsync does not exclude specified directory starting with a hash character (#)
I'm going to answer this to say that with rsync version 3.1.3 protocol 31 I cannot reproduce the issue as ORIGINALLY described. (Raspbian GNU/Linux 10 "buster".)
The modified question shows ...
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Connection timed out no servers could be reached, port is open but connection refused
If you are ok with iptables and selinux; you must check all network services status once on your machine.
The issue I found is network.service ; was failing on the vm.
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How do I install an older version of Apache httpd in CentOS 6 using YUM
By mistake i have deleted mod_ssl package from server. Can i reinstall without removing all httpd conf files. I tried to install but getting below error. You can skip repo name
[root@gabsvrameyo yum....
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What's the difference between /usr/lib/systemd/system and /etc/systemd/system?
The runtime files in /run/systemd/system stem from the ability to make modifications to a process (unit) during the current boot without that change/modification persisting across a reboot.
From ...
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CentOS 6: Group descriptors corrupted
It depend on how you are using corrupted file system, you may need to run fsck to fix these error and for that you need to unmount the related mount point.
So you don't have to take complete system ...
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0
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lsof - age of file
I tried to get this for myself. What I came up with is this:
#!/bin/sh
BASE=`basename "${0}" ".sh" `
TMP="/tmp/tmp.$$.${BASE}"
#COMMAND PID USER FD ...
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1
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CentOS buffer/clipboard usage in console-only environment
Plain Linux text terminal is quite limited in terms of its abilities.
Not true at all!
Linux Bash Terminal Keyboard Shortcuts
Shortcut Action
Bash Navigation
Ctrl + A Move to ...
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0
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Decrease /home and increase /root without losing data
It's fairly easy to use e.g. a SystemRescueCD, and use gparted to do the resizing while the filesystems aren't mounted.
Regarding the shrinking: you may be out of luck if you went with the DeadRat ...
- 5,809
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missing disk space on server
It's 1 server out of several 100 with the same configuration and partition
Can you estmate what real fs usage should be? Is it 6GB is to small?
df get info with statvfs() wich reports number of free ...
- 441
0
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Failed to start The Apache HTTP Server - httpd.service failed
This command:
yum --enablerepo=epel install perl-DateTime-TimeZone*
returned the following error for me:
Error: Unknown repo: 'epel'
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CentOS 7 - yum install not working
First install EPEL(Extra Packages for Enterprise Linux), then install your need packagename
$ yum -y install epel-release
$ yum -y install autossh
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0
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How to automatically run a command when directory updates?
You can monitor directory with inotifywait and run a command when file is added:
inotifywait -m -e create -e moved_to --no-newline --format "%f%0" /opt/data | \
while IFS= read -r -d '' ...
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0
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missing disk space on server
The best tool to figure out what's taking space on a fs (but NOT deleted-but-sill-open-files) is ncdu. Try ncdu -qx / to diagnose your rootfs.
Since your problem persists after a reboot, it seems that ...
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mdadm RAID1: can you grow to 3 disks, then revert back to 2?
I had a 'dying' drive, as suggested by SMART, in a RAID10 config.
I was looking for a similar solution, so as not to degrade the array before adding the new drive. I used mdadm --replace and did what ...
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0
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missing disk space on server
On running system you should check disk usage as root user to have access to all files and dirs.
Maybe your root fs has quota enabled.
Check xfs_quota -x -c 'free -hi' /
Boot from live cd (gparted, ...
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3
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missing disk space on server
It seems likely there are a significant number of files hidden under one of the boot, dev, run, sys mountpoint directories that are usually inaccessible due to other filesystems being mounted there. ...
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0
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No longer able to enable my network interface in Centos 8
Did you clone your VM? I had also the same issue and the same solution worked. In my case I had cloned a VM from the existing Linux VM. Its better to do basic configuration of the Primary VM from ...
1
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Accepted
Why does journaltcl logs start only today when the last reboot was done 5 days before?
A glance at the logrotate status output does seem to confirm that the scality app's logs were rotated. However, there is a bit of confusion here because there are two sets of logs to consider, and ...
- 83.5k
1
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Read and convert date from file
$ let diff=($(date +%s -d 'today')-$(date +%s -f VM1_EOMAP_TIME.log))/60
$ echo "$diff"
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1
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Why mce panic @4.18 kernel pass @5.15 kernel
As I has suspected when commenting & answering your very first related question you are typically facing a double fault. I add here : and possibly a triple. (under the 4.18)
Regarding the 4.18 ...
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Accepted
Why mce panic @4.18 kernel pass @5.15 kernel
Based on a couple facts listed below, my working theory is a uncorrected hardware memory error (UHME) occurred resulting in a NMI. During processing the NMI, a page fault happens. There may an order ...
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1
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Read and convert date from file
Your problem is quoting.
And that you should use date -u to compensate for timezone.
$ echo "07 Sep 2022 16:30" > infile
$ var="$(<infile)"
$ cat infile; echo "$var"...
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1
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Read and convert date from file
If your bash is recent, the current time in epoch seconds is builtin: $EPOCHSECONDS
Otherwise, bash's printf can get it with the %(fmt)T directive and magic value "-1":
printf -v ...
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0
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LV Write Access read/write (activated read only) problem
It's a virtual disk. Check that your underlying host hasn't run out of disk space
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2
votes
Accepted
if condition always false despite the condition being true upon manual execution
The problem is that you're testing the output of your command sequence rather than the status.
Try this instead
#!/bin/sh
if grep -v '^#' "$HOME/2_need_softwares.txt" | grep -iq mongo
then
...
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0
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Unable to boot to Windows 10 after installing Centos 7 x_86-64 minimal
I don't know if it's the case on CentOS, but in Fedora (the "incubator" for RedHat/CentOS), the minimal selection doesn't install the program which, needed by os-prober. Try to do sudo yum ...
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Why mce panic @4.18 kernel pass @5.15 kernel
It seems BUG_ON(true) will trigger a kernel BUG which is invalid opcode 0000
If yes in this case, then
BUG_ON(!in_nmi());
trigger this dump.
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0
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Telnet: Connection refused for specific port only. [CentOS 8]
Can you elaborate on what you did ? "opened redis config to bind 0.0.0.0" is pretty vague as i have no clue what redis is supposed to be.
I have the same problem but mine was already on 0.0....
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Is there a way to retrieve UUID information of an unmounted hard drive?
blkid should work with unmounted disks, but you must make sure that the disk is formatted.
List disks:
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1,7T 0 disk
sdb 8:16 ...
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Why mce panic @4.18 kernel pass @5.15 kernel
Think it is not related to the kernel, but simply a HW memory error whereby you hit that memory address with the newer kernel and not (yet) with the old one. Have you performed a mem test?
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Accepted
Running a few commands (that then ask questions) on startup
It wants to authenticate because you're not root. So starting from rc.local will work as that runs as root. But this is not the way to go - uwsgi is a service so can just be set to start at bootup ...
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3
votes
"route add/del" in bash script does not work when invoked from within systemd service
Ok, found what the problem is, if the service type is oneshot one needs to add to it: RemainAfterExit=yes otherwise what seems to happen when you run systemctl start <service> is that ExecStart ...
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fpsync syntax error
Remove -lptgoD -v from the options list as this is already included in the default rsync -av command generated by fpsync.
You haven't quoted the parameters for the -e ssh -p 222 so these will be ...
- 93.6k
1
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Run program with specified library
If you preload a library, the dynamic linker will use that to bind symbols before looking for other libraries:
LD_PRELOAD=/path/to/library.so program
You can check this beforehand with ldd:
...
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1
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Run program with specified library
You have a couple of options here. The most common would be
LD_LIBRARY_PATH=/custom/path:$LD_LIBRARY_PATH ./yourprogram
Second, slightly more powerful is
LD_PRELOAD=/custom/path/lib.so ./yourprogram
...
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Where do I get "Development Tools" for CentOS 7 when trying to install via yum?
I was also trying the same to isntall Development Tools for CentOS 7 but couldn't make a way. Finally I did something alternative.
You can install the following, this also includes basic development ...
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Restrict User Functions to only "su" to other users
Both parts of the question should be possible to solve by adding proper entries in /etc/sudoers file by command visudo issued from the root account.
There you can allow or disallow users to have ...
- 291
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Can't open syntax.vim error when using vimrc
I had this error after using "export VIM=vim" in my shell startup script. I had copied someone else's from the internet, so my VIM variable wasn't set properly. Removed the line from .kshrc (...
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CentOS7 Log User Activity from SFTP
Please check this first: https://linux.die.net/man/8/sftp-server
From here you can choose what is available and what is the perfect option according to your demand; logging "user activities"....
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