All Questions
Tagged with rhel networking
151
questions
0
votes
0
answers
30
views
Server not responding to ICMP requests
I have 4 servers running on rocky linux at a datacenter in Chicago but one is not answering to ping requests. I have been checking for solutions for day but so far things look good, what I am missing?
...
1
vote
0
answers
22
views
Hadoop + warnings as slow block-receive from data-node machines
We have Hadoop cluster with 487 data-nodes machines ( each data-node machine include also the Service node-manager ) , all machines are physical machines ( DELL ) , and OS is RHEL 7.9 version.
Each ...
- 13.4k
0
votes
0
answers
27
views
Firewalld is running, I can acccess unallowed kubernetes exposed port?
I have a Kubeadm based Kubernetes cluster. Firewalld is running on all nodes on the cluster.
I expose a nginx service via NodePort service, that on theory should be accessible via all nodes on the ...
- 101
1
vote
0
answers
23
views
USBGuard issue with Realtek NIC on Dell Tablet and Docking Station
I am facing an issue with a Dell Tablet running RHEL 8.9 and utilizing a non-Dell docking station. The docking station is equipped with a Realtek NIC, and I've configured usbguard to manage USB device ...
- 163
0
votes
1
answer
130
views
CentOS Stream 9 image has predictable interface naming disabled
I'm using a qcow2 image from here.
Note the net.ifnames=0
cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/boot/vmlinuz-5.14.0-366.el9.x86_64 root=UUID=<uuid> ro console=ttyS0,115200n8 no_timer_check ...
mockitodorito
0
votes
2
answers
352
views
How to stop automatic network provisioning
I recently installed RHEL 9 and attempted to delete all network interfaces. I removed all files in /etc/sysconfig/network-scripts folder and deleted the interface ens192 with nmutl. However, after a ...
- 31
0
votes
0
answers
777
views
How do I setup source based routing on Almalinux 8?
I have a server with 2 interfaces where each interface is connected to a different VLAN with an associated gateway address to route in/out the VLAN. I need traffic that arrives at a particular ...
0
votes
1
answer
2k
views
What is the file location for ip routes in RHEL9?
My route table on RHEL9 looks as below:
root@localhost network-scripts]# netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 ...
- 181
0
votes
0
answers
178
views
Centos 7 NetworkManager removes conection profile when device disappears and does not recreate when it reappears
I have a software application running on CentOS 7 that creates an IP TUN network interface. I want to configure it with a static IP such that whenever the TUN interface appears it is configured. I ...
- 151
0
votes
1
answer
1k
views
In RHEL, can you associate the GID of an AD group with the GID of a local group?
I have a Windows Active Directory system and the GID of group X is 1745005454. The RHEL machines are AD joined using realm and SSSD authenticated, and when you do an id username it will show that that ...
1
vote
0
answers
1k
views
how does RHEL/CentOS 7 create the ifcfg-eth0 file?
I replaced a bad NIC in a server with a new one. After boot the ifcfg files under /etc/sysconfig/network-scripts are no longer there. I did not delete them. Therefore I conclude that during boot ...
- 7,264
0
votes
0
answers
1k
views
How to permanently disable delayed Ack?
I have run in to the Nagle / Delayed ACK problem that causes 40ms overhead on small TCP packets.
According to Redhat documentation I can add the quickack 1 option to the route and it will disable the ...
- 141
2
votes
1
answer
3k
views
Change the default firewalld zone for podman networks
Whenever podman creates a new network (interface) - by default - it adds it to the trusted zone of firewalld as described here:
Podman adds each container to firewalld's trusted zone.
You can add ...
- 540
1
vote
1
answer
971
views
Stop Application from listening to a particular port
Background
We would like to configure a Linux machine so that it doesn't automatically listen to a port; whether a default port or not. We are using Oracle Linux and RHEL.
Issue
How can we prevent our ...
- 27
0
votes
1
answer
38
views
Port redirect program with non configurable port
I am trying to run vscode-server which currently has no functionality to change which port the server is run on.
The port its set to use by default is currently in use by another program.
Is it ...
- 11