On 03 May 2016, at 13:08, Gianluca Cecchi <gianluca.cecchi@gmail.com> = wrote: =20 Hello, 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 =20 - CentOS 6.7 Basically what described in general here (but using ttyS0 instead = ttyS1): http://www.cyberciti.biz/faq/centos-rhel-6-install-serial-console/ = <http://www.cyberciti.biz/faq/centos-rhel-6-install-serial-console/> =20 So in /boot/grub/grub.conf=20 =20 a) right before the "hiddenmenu" line: =20 serial --unit=3D0 --speed=3D19200 --word=3D8 --parity=3Dno --stop=3D1 terminal --timeout=3D5 serial console =20 b) At the end of kernel line added: console=3Dtty0 console=3DttyS0,19200n8 =20 Added at the end of /etc/securetty the line ttyS0 =20 Only difference is that as I used ttyS0, the upstart configuration was = not needed: the system after reboot was already listening on ttyS0 Creating upstart config file generated 2 processes listening on ttyS0 =20 =20 - CentOS 7.2 created VM with virtio console enabled in options and basically = following what described here https://www.youtube.com/watch?v=3DSx2HRwFqG7o = <https://www.youtube.com/watch?v=3DSx2HRwFqG7o> =20 from default configuration I got after install: =20 Add in /etc/default/grub "console=3DttyS0" in GRUB_CMDLINE_LINUX so =
--Apple-Mail=_BD09F72D-91EC-46F7-A2A6-B1736D2F6445 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii that it is now:
GRUB_CMDLINE_LINUX=3D"rd.lvm.lv <http://rd.lvm.lv/>=3Dcentos/root = rd.lvm.lv <http://rd.lvm.lv/>=3Dcentos/swap rhgb quiet console=3DttyS0" =20 grub2-mkconfig -o /boot/grub2/grub.cfg =20 reboot the VM =20 =46rom a client: $ ssh -t -p 2222 ovirt-vmconsole@ovirt.lutwyn.org = <mailto:ovirt-vmconsole@ovirt.lutwyn.org> connect Available Serial Consoles: 00 c6desktop[68a82ada-a1d2-44d0-85b0-f3a08cc2f579] 01 c7desktop[787f46f6-de4a-4b42-ba39-9609908c2905] SELECT> 01 =20 CentOS Linux 7 (Core) Kernel 3.10.0-327.13.1.el7.x86_64 on an x86_64 =20 Host-006 login: root Password:=20 Last login: Tue May 3 01:34:57 on pts/0 [root@Host-006 ~]#=20 [root@Host-006 ~]#=20 [root@Host-006 ~]# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core)=20 [root@Host-006 ~]# exit
Hi Gianluca, would you care to extend = http://www.ovirt.org/documentation/admin-guide/serial-console-setup/ = with this useful info? I suppose there are quite a few people who would = find handy some tips how to set it up for various guest OSes Thanks, michal
=20 HIH, Gianluca _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_BD09F72D-91EC-46F7-A2A6-B1736D2F6445 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div = class=3D"">On 03 May 2016, at 13:08, Gianluca Cecchi <<a = href=3D"mailto:gianluca.cecchi@gmail.com" = class=3D"">gianluca.cecchi@gmail.com</a>> wrote:</div><br = class=3D"Apple-interchange-newline"><div class=3D""><div dir=3D"ltr" = class=3D""><div class=3D"gmail_extra"><div = class=3D"gmail_quote">Hello,</div><div class=3D"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=3D"gmail_quote"><br class=3D""></div><div class=3D"gmail_quote">- = CentOS 6.7</div><div class=3D"gmail_quote">Basically what described in = general here (but using ttyS0 instead ttyS1):</div><div = class=3D"gmail_quote"><a = href=3D"http://www.cyberciti.biz/faq/centos-rhel-6-install-serial-console/= " = class=3D"">http://www.cyberciti.biz/faq/centos-rhel-6-install-serial-conso= le/</a><br class=3D""></div><div class=3D"gmail_quote"><br = class=3D""></div><div class=3D"gmail_quote">So = in /boot/grub/grub.conf </div><div class=3D"gmail_quote"><br = class=3D""></div><div class=3D"gmail_quote">a) right before the = "hiddenmenu" line:</div><div class=3D"gmail_quote"><div = class=3D"gmail_quote"><br class=3D""></div><div = class=3D"gmail_quote">serial --unit=3D<b class=3D"">0 </b>--speed=3D19200 = --word=3D8 --parity=3Dno --stop=3D1</div><div = class=3D"gmail_quote">terminal --timeout=3D5 serial = console</div></div><div class=3D"gmail_quote"><br class=3D""></div><div = class=3D"gmail_quote">b) At the end of kernel line added:</div><div = class=3D"gmail_quote">console=3Dtty0 console=3DttyS<b = class=3D"">0</b>,19200n8<br class=3D""></div><div = class=3D"gmail_quote"><br class=3D""></div><div = class=3D"gmail_quote">Added at the end of /etc/securetty the = line</div><div class=3D"gmail_quote">ttyS0<br class=3D""></div><div = class=3D"gmail_quote"><br class=3D""></div><div class=3D"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 = class=3D""></div><div class=3D"gmail_quote">Creating upstart config file = generated 2 processes listening on ttyS0</div><div = class=3D"gmail_quote"><br class=3D""></div><div class=3D"gmail_quote"><br = class=3D""></div><div class=3D"gmail_quote"><div class=3D"gmail_quote">- = CentOS 7.2</div><div class=3D"gmail_quote">created VM with virtio = console enabled in options and basically following what described = here</div><div class=3D"gmail_quote"><a = href=3D"https://www.youtube.com/watch?v=3DSx2HRwFqG7o" = class=3D"">https://www.youtube.com/watch?v=3DSx2HRwFqG7o</a></div><div = class=3D"gmail_quote"><br class=3D""></div><div class=3D"gmail_quote">from= default configuration I got after install:</div><div = class=3D"gmail_quote"><br class=3D""></div><div class=3D"gmail_quote">Add = in /etc/default/grub "console=3DttyS0" in GRUB_CMDLINE_LINUX so that it = is now:</div><div class=3D"gmail_quote">GRUB_CMDLINE_LINUX=3D"<a = href=3D"http://rd.lvm.lv/" class=3D"">rd.lvm.lv</a>=3Dcentos/root <a = href=3D"http://rd.lvm.lv/" class=3D"">rd.lvm.lv</a>=3Dcentos/swap rhgb = quiet console=3DttyS0"</div><div class=3D"gmail_quote"><br = class=3D""></div><div class=3D"gmail_quote">grub2-mkconfig -o = /boot/grub2/grub.cfg</div><div class=3D"gmail_quote"><br = class=3D""></div><div class=3D"gmail_quote">reboot the VM</div><div = class=3D"gmail_quote"><br class=3D""></div><div class=3D"gmail_quote">=46r= om a client:</div><div class=3D"gmail_quote">$ ssh -t -p 2222 <a = href=3D"mailto:ovirt-vmconsole@ovirt.lutwyn.org" = class=3D"">ovirt-vmconsole@ovirt.lutwyn.org</a> connect</div><div = class=3D"gmail_quote">Available Serial Consoles:</div><div = class=3D"gmail_quote">00 = c6desktop[68a82ada-a1d2-44d0-85b0-f3a08cc2f579]</div><div = class=3D"gmail_quote">01 = c7desktop[787f46f6-de4a-4b42-ba39-9609908c2905]</div><div = class=3D"gmail_quote">SELECT> 01</div><div class=3D"gmail_quote"><br = class=3D""></div><div class=3D"gmail_quote">CentOS Linux 7 = (Core)</div><div class=3D"gmail_quote">Kernel 3.10.0-327.13.1.el7.x86_64 = on an x86_64</div><div class=3D"gmail_quote"><br class=3D""></div><div = class=3D"gmail_quote">Host-006 login: root</div><div = class=3D"gmail_quote">Password: </div><div class=3D"gmail_quote">Last= login: Tue May 3 01:34:57 on pts/0</div><div = class=3D"gmail_quote">[root@Host-006 ~]# </div><div = class=3D"gmail_quote">[root@Host-006 ~]# </div><div = class=3D"gmail_quote">[root@Host-006 ~]# cat = /etc/redhat-release</div><div class=3D"gmail_quote">CentOS Linux release = 7.2.1511 (Core) </div><div class=3D"gmail_quote">[root@Host-006 ~]# = exit</div></div></div></div></div></blockquote><div><br = class=3D""></div>Hi Gianluca,</div><div>would you care to extend <a = href=3D"http://www.ovirt.org/documentation/admin-guide/serial-console-setu= p/" = class=3D"">http://www.ovirt.org/documentation/admin-guide/serial-console-s= etup/</a> with this useful info? I suppose there are quite a few people = who would find handy some tips how to set it up for various guest = OSes</div><div><br = class=3D""></div><div>Thanks,</div><div>michal</div><div><br = class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div = dir=3D"ltr" class=3D""><div class=3D"gmail_extra"><div = class=3D"gmail_quote"><div class=3D"gmail_quote"><br class=3D""></div><div= class=3D"gmail_quote">HIH,</div><div = class=3D"gmail_quote">Gianluca</div></div></div></div> _______________________________________________<br class=3D"">Users = mailing list<br class=3D""><a href=3D"mailto:Users@ovirt.org" = class=3D"">Users@ovirt.org</a><br = class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br = class=3D""></div></blockquote></div><br class=3D""></body></html>= --Apple-Mail=_BD09F72D-91EC-46F7-A2A6-B1736D2F6445--