<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">Hello,</div><div class="gmail_quote">I attach to this thread to detail how I was able to have serial console working both on CentOS 6.7 and CentOS 7.2 VMs on 3.6.5</div><div class="gmail_quote"><br></div><div class="gmail_quote">- CentOS 6.7</div><div class="gmail_quote">Basically what described in general here (but using ttyS0 instead ttyS1):</div><div class="gmail_quote"><a href="http://www.cyberciti.biz/faq/centos-rhel-6-install-serial-console/">http://www.cyberciti.biz/faq/centos-rhel-6-install-serial-console/</a><br></div><div class="gmail_quote"><br></div><div class="gmail_quote">So in /boot/grub/grub.conf </div><div class="gmail_quote"><br></div><div class="gmail_quote">a) right before the &quot;hiddenmenu&quot; line:</div><div class="gmail_quote"><div class="gmail_quote"><br></div><div class="gmail_quote">serial --unit=<b>0 </b>--speed=19200 --word=8 --parity=no --stop=1</div><div class="gmail_quote">terminal --timeout=5 serial console</div></div><div class="gmail_quote"><br></div><div class="gmail_quote">b) At the end of kernel line added:</div><div class="gmail_quote">console=tty0 console=ttyS<b>0</b>,19200n8<br></div><div class="gmail_quote"><br></div><div class="gmail_quote">Added at the end of /etc/securetty the line</div><div class="gmail_quote">ttyS0<br></div><div class="gmail_quote"><br></div><div class="gmail_quote">Only difference is that as I used ttyS0, the upstart configuration was not needed: the system after reboot was already listening on ttyS0<br></div><div class="gmail_quote">Creating upstart config file generated 2 processes listening on ttyS0</div><div class="gmail_quote"><br></div><div class="gmail_quote"><br></div><div class="gmail_quote"><div class="gmail_quote">- CentOS 7.2</div><div class="gmail_quote">created VM with virtio console enabled in options and basically following what described here</div><div class="gmail_quote"><a href="https://www.youtube.com/watch?v=Sx2HRwFqG7o">https://www.youtube.com/watch?v=Sx2HRwFqG7o</a></div><div class="gmail_quote"><br></div><div class="gmail_quote">from default configuration I got after install:</div><div class="gmail_quote"><br></div><div class="gmail_quote">Add in /etc/default/grub &quot;console=ttyS0&quot; in GRUB_CMDLINE_LINUX so that it is now:</div><div class="gmail_quote">GRUB_CMDLINE_LINUX=&quot;<a href="http://rd.lvm.lv">rd.lvm.lv</a>=centos/root <a href="http://rd.lvm.lv">rd.lvm.lv</a>=centos/swap rhgb quiet console=ttyS0&quot;</div><div class="gmail_quote"><br></div><div class="gmail_quote">grub2-mkconfig -o /boot/grub2/grub.cfg</div><div class="gmail_quote"><br></div><div class="gmail_quote">reboot the VM</div><div class="gmail_quote"><br></div><div class="gmail_quote">From a client:</div><div class="gmail_quote">$ ssh -t -p 2222 <a href="mailto:ovirt-vmconsole@ovirt.lutwyn.org">ovirt-vmconsole@ovirt.lutwyn.org</a> connect</div><div class="gmail_quote">Available Serial Consoles:</div><div class="gmail_quote">00 c6desktop[68a82ada-a1d2-44d0-85b0-f3a08cc2f579]</div><div class="gmail_quote">01 c7desktop[787f46f6-de4a-4b42-ba39-9609908c2905]</div><div class="gmail_quote">SELECT&gt; 01</div><div class="gmail_quote"><br></div><div class="gmail_quote">CentOS Linux 7 (Core)</div><div class="gmail_quote">Kernel 3.10.0-327.13.1.el7.x86_64 on an x86_64</div><div class="gmail_quote"><br></div><div class="gmail_quote">Host-006 login: root</div><div class="gmail_quote">Password: </div><div class="gmail_quote">Last login: Tue May  3 01:34:57 on pts/0</div><div class="gmail_quote">[root@Host-006 ~]# </div><div class="gmail_quote">[root@Host-006 ~]# </div><div class="gmail_quote">[root@Host-006 ~]# cat /etc/redhat-release</div><div class="gmail_quote">CentOS Linux release 7.2.1511 (Core) </div><div class="gmail_quote">[root@Host-006 ~]# exit</div><div class="gmail_quote"><br></div><div class="gmail_quote">HIH,</div><div class="gmail_quote">Gianluca</div></div></div></div>