Search found 2005 matches

by jlehtone
2018/10/17 06:18:25
Forum: CentOS 7 - Security Support
Topic: Configuring linux as a forwarder to forward another ip
Replies: 4
Views: 104

Re: Configuring linux as a forwarder to forward another ip

VM(192.168.56.101)-> HTTP Server(192.168.56.102) These addresses are on the same subnet? Where is the client? For DNAT the IP address of the VM is not important. Typical "forwarding" has: clientX--lanA--YrouterZ--lanB--Wserver where * routerZ is the default gateway of lanB * router does DNAT to-dst...
by jlehtone
2018/10/12 09:54:56
Forum: CentOS 7 - Security Support
Topic: Firewall-cmd tricky rule
Replies: 3
Views: 106

Re: Firewall-cmd tricky rule

Whose firewalls? Are we talking about a router, or the servers? CentOS default is to: * allow everything that is going out from this machine * allow all incoming replies * reject all new incoming connections (except ssh) Therefore, (after closing the ssh service's port), "all traffic initiated from ...
by jlehtone
2018/10/11 19:11:16
Forum: CentOS 6 - Networking Support
Topic: How to view mapped drives
Replies: 4
Views: 178

Re: How to view mapped drives

Code: Select all

findmnt
Shows both current mounts and mount-points that the automounter does manage.

There might be useful error messages in

Code: Select all

/var/log/messages
by jlehtone
2018/10/11 06:54:28
Forum: CentOS 7 - Security Support
Topic: Firewall-cmd tricky rule
Replies: 3
Views: 106

Re: Firewall-cmd tricky rule

I do assume that the two servers have firewalld. Start by asking, What is in the default? The default is to use the zone 'public'. What is in it? Effectively these: -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A INPUT -j INPUT_ZONES -A INPUT_ZONES -g IN_public -A IN_public -p icmp ...
by jlehtone
2018/10/10 10:20:53
Forum: CentOS 7 - Hardware Support
Topic: Centos 7.4 not booting after putting new Gigabyte Z370P motherboard
Replies: 1
Views: 56

Re: Centos 7.4 not booting after putting new Gigabyte Z370P motherboard

When you install a kernel, a initramfs-file is created too. When you boot, boot loader loads kernel, kernel loads initramfs as filesystem, kernel loads drivers from that filesystem, and then kernel mounts the normal filesystems with the help of those drivers. The install/rescue-kernels initramfs con...
by jlehtone
2018/10/09 14:38:49
Forum: CentOS 7 - Networking Support
Topic: My /etc/resolv.conf is getting reset every time i restart the network
Replies: 2
Views: 76

Re: My /etc/resolv.conf is getting reset every time i restart the network

# Generated by NetworkManager Do you think that comment originates from network.service ? There are NetworkManager.service and network.service. They are not mutually exclusive, but the coexistence is somewhat strained. The NetworkManager is the default. It is usable. Can we assume that you have exp...
by jlehtone
2018/10/08 09:24:18
Forum: CentOS 7 - Software Support
Topic: About smartctl
Replies: 1
Views: 55

Re: About smartctl

There is no risk in that. It simply reads the smart data.

The smartctl can be used to start a self-test on the drive. Not sure whether that is invasive.
by jlehtone
2018/10/08 09:21:23
Forum: CentOS 7 - General Support
Topic: Setting up Nvidia and Cuda driver
Replies: 4
Views: 218

Re: Setting up Nvidia and Cuda driver

why do I have two different boot options for cent with slightly different kernel versions (besides the rescue one)? The kernels do not follow the "new package replaces the old" update style that most packages do. One can have multiple kernel packages installed. The install image has one kernel, whi...
by jlehtone
2018/10/05 14:19:47
Forum: CentOS 7 - General Support
Topic: Update Glibc library
Replies: 7
Views: 320

Re: Update Glibc library

Blender site says:
* 2.68a release: 24 July, 2013
* 2.79b release: 26 March, 2018

There seems to be a slight chance that the features of the EPEL version are felt lackluster.
The obvious action would be to contact the maintainer of EPEL version.
by jlehtone
2018/10/05 11:09:20
Forum: CentOS 7 - General Support
Topic: Update Glibc library
Replies: 7
Views: 320

Re: Update Glibc library

Is there a reason Centos is still stuck to 2.17? Yes, there is. CentOS 7 uses code published by Red Hat for RHEL 7. Does RHEL 7 have a reason? Yes, it does. RHEL 7 attempts to be ABI compatible for its entire lifespan, 10 years. Red Hat will not break the systems of paying customers on a whim of <f...