CentOS

is it possible that we can allow a non-root user to install a specific package. for example I only want to allow a sudo permission to a non-root user to install redis-7.2.4-1.el8.remi.x86_64.rpm

How to check maximum disk read & write operations of SSD in mb & gb We have a Linux machine and see RAM/CPU SWAP is not using more than 50%. However the disk %iowait is 8 to 11. The disk claim its 500 plus read & write operations(picture is attached). The disk is SSD. Below snapshot of iowait is fo...

I got a bit success. the 3rd node I was trying to add after creating the cluster. Now I am able to add the new node but unable to see the cluster as healthy [root@PostgreSQL-HA2 ~]# ETCDCTL_API=3 etcdctl --endpoints http://192.168.2.174:2379,http://192.168.2.177:2379,http://192.168.2.181 member list...

ISSUE FACING [root@PostgreSQL-HA1 etcd]# [root@PostgreSQL-HA1 etcd]# ETCDCTL_API=3 etcdctl --endpoints http://192.168.2.174:2379,http://192.168.2.177:2379,http://192.168.2.181 member list 3466554c14b862ba, started, PostgreSQL-HA1, http://192.168.2.174:2380, http://192.168.2.174:2379 c3309c4b9c698f4...

If official devices are registered thru MAC & IP to access the LAN. How can we deal with MAC & IP spoofing. Anyone can bring its home laptop or mobile and put the allowed MAC or IP on his home device to access the secure network. How can we deal with challenge

NODE-1 status [root@node1-ha ~]# corosync-cfgtool -s Printing ring status. Local node ID 1 RING ID 0 id = 192.168.2.99 status = Marking seqid 56957 ringid 0 interface 192.168.2.99 FAULTY RING ID 1 id = 192.168.2.101 status = ring 1 active with no faults NODE-2 status [root@node2-ha ~]# corosync-cfg...

I am able to telnet on a port at remote machine. However, I am unable to send packets on a connected socket. I run the command (ethtool -k rx off tx off) and then I am able to send packets on same connected socket and then application working accurately.

My Query is, why I need to off rx and tx ?

ENVIRONMENT rpm -qa|grep rsyslog rsyslog-8.37.0-9.el8.x86_64 rsyslog-mysql-8.37.0-9.el8.x86_64 Red Hat OS = 8.0 Rsyslog client = SolarWinds-LogForwarder-FreeTool-v1.2.0 systemctl status rsyslog ● rsyslog.service - System Logging Service Loaded: loaded (/usr/lib/systemd/system/rsyslog.service; enabl...

A centralized Rsyslog server is configured and working fine. Under /var/log path, every machine has its own separate folder for log keeping. For example /var/log/node1, /var/log/node2 and so on. I want every node under /var/log path keep last 6 months logs only.

QUERY
Rsyslog is working fine. I want email alert in case a machine could not push logs (failed to push logs) on rsyslog server