similar to: how to activate the network after an installation

I tried to boot a Centos 8.2 install CD, one burned with Centos-8-2-2004-x86_64-boot . In the setup, it persisted in telling me that ethernet thing enp0s25 was disconnected. Nyet. 'Twas working several seconds previous and is working now. This is a showstopper. How do I debug it? Also, whatever else it did, I now have environment variable

Greetings, One of my biggest frustrations with CentOS 7 has been firewalld. Essentially all of the documentation just flat doesn't work. One common thing that needs to be done is to change the zone of an interface, however I've tried: firewall-cmd --permanent --zone=internal --change-interface=ens192 firewall-cmd --permanent --zone=internal --add-interface=ens192 I've also tried

I have a couple of CentOS 7 machines running in a vmware environment. On all the older ones I've deployed, the NIC is named ens160, but on all of the new ones, it is named ens192. I can't find any difference in the hardware that would account for this. Any suggestions on what I can do to figure out why some are named ens160 and some ens192? Thanks.

On Fri, Jan 13, 2017 at 12:33 PM, Gary Stainburn <gary at ringways.co.uk> wrote: > > > Also, it was suggested that I use nmcli in a cronjob to re-activate it if > it > drops. I can check to see if it's still active by 'grep'ing the IP > address, > but I don't know the nmcli to re-activate an existing WIFI connection. > > Can anyone help here too,

Hi All, I see an unexpected beahviour from NetworkManager on CentOS 7.1. Using nmcli tool, I create a bond with two slaves as explained in the Red Hat 7.1 Networking guide. I enable slaves and master; bond works as expected. When I restart NetworkManager, it creates a new bond with the same name but not connected to any device. Two bonds with the same name is confusing for my other monitoring

I'm still learning firewalld obviously, and I am having trouble groking the documentation to understand how to do this. I know I could do an iptables direct, but that doesn't seem like the "right" way to do it. What I'm trying to do is allow a specific service, only for a specific ip. Effectively, SNMP should be allowed form a specific IP address (the systems monitor).

You could say the same thing about computers in general: I hate them, they automated many tasks in life and took many jobs out of the market!. Eliezer ---- Eliezer Croitoru Linux System Administrator Mobile: +972-5-28704261 Email: eliezer at ngtech.co.il -----Original Message----- From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Gary Stainburn Sent: Monday, January 16, 2017

On 07/07/16 05:36 PM, Digimer wrote: > On 07/07/16 05:21 PM, Joe Smithian wrote: >> Hi All, >> >> I see an unexpected beahviour from NetworkManager on CentOS 7.1. >> Using nmcli tool, I create a bond with two slaves as explained in the Red >> Hat 7.1 Networking guide. I enable slaves and master; bond works as >> expected. >> When I restart

Once again I am building a headless Centos 7 box that needs to reliably be on both the LAN and WIFI network at all times. Amongst other things it's going to be an AirPrint bridge enabling IPads to print to printers on a different VLAN. I have asked about this before and got a solution working using nmtui to set up both the LAN and WIFI interface, and activate them. However, the WIFI

Hello Rowland, selinux has been disabled, I also ran th follow # systemctl stop sernet-samba-ad # samba_upgradedns --dns-backend=BIND9_DLZ # named -d3 -f -g -u named Which then still fails, see below smb.conf [global] workgroup = DOMAIN realm = DOMAIN.CORP netbios name = PDC server role = active directory domain controller idmap_ldb:use rfc2307 = yes

I wasn't sure what to call this in the subject line, but here's my issue. I have an occasional need to switch a few computers from one Internet provider to a different one. Both Internet providers feed into the same network, one at 192.168.0.1 and the other at 192.168.0.254. So to change from one provider to the other I run nmtui to change the gateway and dns server addresses, then

Dear Simon, every second IP-address is unwanted. We restarted? eno4: nmcli con down eno4; nmcli con up eno4 and the second address vanishes. Then after a few ours, the second ip address reappears. This is the config-file of eno2: # cat ifcfg-eno2 TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=none DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes

Dear Simon, > And can you diff the config of eno1 and eno4. # pwd /etc/sysconfig/network-scripts # diff -u ifcfg-eno1 ifcfg-eno4 --- ifcfg-eno1??? 2020-09-21 17:23:25.576672703 +0200 +++ ifcfg-eno4??? 2020-09-22 07:18:43.160532532 +0200 @@ -3,15 +3,20 @@ ?BROWSER_ONLY=no ?BOOTPROTO=none ?DEFROUTE=no -IPV4_FAILURE_FATAL=yes -IPV6INIT=no -IPV6_AUTOCONF=no +IPV4_FAILURE_FATAL=no

I'd like to consolidate the services from several old servers onto 2 CentOS7 VMs that are currently running dhcpd in a balanced/failover configuration. It will simplify things to add the IPs from the old servers as aliases, at least temporarily so everything will continue to connect without changes. However, after adding the first one, I see in the logs that DHCPD is sending its DHCPACKs

Once upon a time, Lists <lists at benjamindsmith.com> said: > I understand that it's possible to allow the 4 VM guest systems to each have a > "direct" fixed IP address and access the addresses \via the host network > adapter, while the host retains its fixed IP. If you are running NetworkManager (the default), it's not too hard. Here's an example

Dear CentOS-Community, we are facing the following issue: A secondary ip address seems to be automatically added to a nic which causes several issues in our setup. This server is equipped with four nics which are currently in use: # nmcli con show NAME????? UUID????????????????????????????????? TYPE????? DEVICE eno2????? cb6fcb54-be52-4ab6-8324-88091a0ea1a0? ethernet? eno2 eno4?????

Hi Rowland, Sorry I missed out on the OS. CentOS Linux release 7.6.1810 (Core) smb.conf # Global parameters [global] bind interfaces only = Yes interfaces = lo ens192 netbios name = SERVER1 realm = EXAMPLE.COM server role = active directory domain controller workgroup = WORKGROUP idmap_ldb:use rfc2307 = yes ldap server require

On 6 November 2015 at 21:49, Pete Travis <lists at petetravis.com> wrote: > On Nov 6, 2015 3:31 PM, "Nick Bright" <nick.bright at valnet.net> wrote: >> >> Greetings, >> >> One of my biggest frustrations with CentOS 7 has been firewalld. >> >> Essentially all of the documentation just flat doesn't work. >> >> One common

I have a physical host with a single physical network adapter. I want to host several VMs on host. (guest1 - guest4) The guest systems are accessible via 192.168.122.* as is the default with qemu/virsh. There are 4 IP addresses being routed to the primary interface on host. I can set up an alias for the NIC and "see" these ip addresses. I understand that it's possible to allow

Hello all, I updated two of my servers to CentOS 7.2 (1511) two days ago, and since, on one of them, the network services are started (and fail to start) before the network interfaces are online. Parts of "journalctl" after the last reboot : d?c. 17 10:21:44 myserver kernel: NET: Registered protocol family 40 d?c. 17 10:21:45 myserver sshd[700]: error: Bind to port 22 on