[Users] Centos 6.5 host configuration script -- a tale begun

13 Dec 2013

      --_000_22f073c8f28e423a8959bb2687b19cb9DM2PR05MB320namprd05pro_
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

I have been working since Monday to get a Centos 6.5 host node added to ovi=
rt.  Since 6.5 is just out, I figured I might as well use the latest and gr=
eatest to build my host.  Today I succeeded (I think).  I have not actually=
 added a VM to the host, but at least ovirt is willing to accept that the h=
ost is part of the default cluster.  My next task will be bringing up glust=
er on that same node.

Since I will be doing at least three more hosts, I wrote a shell script to =
do a the setup that is needed to make the ovirt process succeed.

No, I do not have a similar script for the engine.  I got that running unde=
r Centos 6.4 in a VM, without too much problem.  That VM is temporarily run=
ning on a KVM host (but that host is not under ovirt).

Feel welcome to stare at or run my script and make any comments or observat=
ions.

  *   The script is run after a clean install of Centos 6.5 from the "minim=
al" ISO.
  *   I will try to remember what each element was there for, if anything i=
s not clear.
  *   There are probably a few (not many) things there that are not needed
     *   Mostly they result in doing something ahead of time that ovirt was=
 going to do later anyway.
  *   Feel free to point out a better way to do whatever needs to be done.
  *   Bits and pieces of the script were stolen from googleing here and the=
re.
  *   Parts of the script were cooked up by stewing logs over low heat unti=
l something useful bubbled to the top.
  *   The number of clean reinstalls to test the script is beyond count.
     *   I almost broke down and learned how to write a kickstart file (but=
 didn't).
  *   No guarantees or representations.
     *   So far this script has been tested on exactly one set of bare-meta=
l hardware
        *   That hardware is not server-grade. (ovirt keeps complaining bec=
ause I have not configured Power Management :)
  *   There are a few things that are personal preferences (things I instal=
l on all my Linux machines)
     *   I believe those preferences are clearly marked.
     *   I am leaving them in because they may (incidentally) be installing=
 some dependencies that influence the outcome of the process.

I hope to see a day when a similar script is either not needed, or is avail=
able and maintained as part of the Centos distro, or as part of ovirt.  Mea=
nwhile we try to muddle through.

I will copy my script into this webmail interface (OWA) (since I am writing=
 at home and this is all I have to work with) and see how bad it mangles it=
.  You'll probably need a wide window so that lines don't wrap, as Microsof=
t thinks this OWA interface doesn't ever need to let me specify text as "pr=
eformat".  I called my script ov_host-start.sh

# script to prepare Centos 6.5 for ovirt host install process

echo "=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D  Ted's personal p=
references--early =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D"

yum -y install nano deltarpm yum-plugin-priorities yum-presto mlocate

echo "=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D end of Ted'=
s personal preferences--early =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D"

yum -y upgrade

echo "....................install some repos (if not already done).........=
........."
cd /etc/yum.repos.d
if [ ! -f glusterfs-epel.repo ] ; then
  echo "..............installing gluster repo......................."
  yum -y install wget
  wget http://download.gluster.org/pub/gluster/glusterfs/LATEST/EPEL.repo/g=
lusterfs-epel.repo
  echo "..............done installing gluster repo.................."
fi

if [ ! -f el6-ovirt.repo ] ; then
  echo "..............installing ovirt repo......................."
  yum -y localinstall http://ovirt.org/releases/ovirt-release-el.noarch.rpm
  echo "..............done installing ovirt repo.................."
fi

if [ ! -f epel.repo ] ; then
  echo "..............installing epel repo......................."
  yum -y localinstall http://mirror.us.leaseweb.net/epel/6/i386/epel-releas=
e-6-8.noarch.rpm
  echo "..............done installing epel repo.................."
fi

echo "........install libvirt............................"
    yum -y install libvirt qemu-kvm tuned
echo "........install virt-manager" # with unlisted dependencies
yum -y install virt-manager xorg-x11-xauth dejavu-lgc-sans-mono-fonts

# create the ovirtmgmt bridge
if [ ! -f /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt ]; then
   echo "........................creating ovirtmgmt bridge.................=
....."
   service libvirtd start
   service libvirtd status
   virsh net-destroy default
   virsh net-undefine default
   virsh iface-bridge eth0 ovirtmgmt
   service network restart
   service libvirtd stop
   service libvirtd status
fi

echo ".........copy tuned profile..............."
# copy virtual-host --> rhs-virtualization so ovirt is happy
cp -r /etc/tune-profiles/virtual-host /etc/tune-profiles/rhs-virtualization

yum -y install vdsm

echo "=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D  Ted's personal p=
references--late =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D"

#add lines to send messages to TTY12
cat /etc/rsyslog.conf | grep tty12
if [ ! $? -eq 0 ] ; then
   echo ".......................Adding for tty12...................."
   echo " " >> /etc/rsyslog.conf
   echo "# Log everything to tty12"  >> /etc/rsyslog.conf
   echo "*.*                             /dev/tty12" >> /etc/rsyslog.conf
   service rsyslog restart
fi

echo "...........install gkrellm.............."
yum -y install gkrellm

#add poll=3D0 to kill noveau messages
cat /boot/grub/grub.conf | grep poll=3D0
if [ ! $? -eq 0 ] ; then
   echo "............................Adding poll=3D0.......................=
..."
   sed -i '/^[ \t]kernel*/ s/$/ drm-kms-helper.poll=3D0/g' /boot/grub/grub.=
conf
fi

--_000_22f073c8f28e423a8959bb2687b19cb9DM2PR05MB320namprd05pro_
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
...
</head>
<body id=3D"" tabindex=3D"0" dir=3D"ltr">
<div name=3D"divtagdefaultwrapper" id=3D"divtagdefaultwrapper" style=3D"fon=
t-family: Calibri,Arial,Helvetica,sans-serif; font-size: 12pt; color: #0000=
00; margin: 0">
I have been working since Monday to get a Centos 6.5 host node added to ovi=
rt.  Since 6.5 is just out, I figured I might as well use the latest a=
nd greatest to build my host.  Today I succeeded (I think).  I ha=
ve not actually added a VM to the host, but at
 least ovirt is willing to accept that the host is part of the default clus=
ter.  My next task will be bringing up gluster on that same node. 
 
Since I will be doing at least three more hosts, I wrote a shell script to =
do a the setup that is needed to make the ovirt process succeed. 
 
No, I do not have a similar script for the engine.  I got that running=
 under Centos 6.4 in a VM, without too much problem.  That VM is tempo=
rarily running on a KVM host (but that host is not under ovirt). 
 
Feel welcome to stare at or run my script and make any comments or observat=
ions. 
<ul style=3D"font-family: serif; font-size: 12pt; margin-top: 0px; margin-b=
ottom: 0px;">
<li>The script is run after a clean install of Centos 6.5 from the "mi=
nimal" ISO. 
</li><li>I will try to remember what each element was there for, if anythin=
g is not clear.</li><li>There are probably a few (not many) things there th=
at are not needed
<ul>
<li>Mostly they result in doing something ahead of time that ovirt was goin=
g to do later anyway. 
</li></ul>
</li><li>Feel free to point out a better way to do whatever needs to be don=
e.</li><li>Bits and pieces of the script were stolen from googleing here an=
d there.</li><li>Parts of the script were cooked up by stewing logs over lo=
w heat until something useful bubbled to the top.</li><li>The number of cle=
an reinstalls to test the script is beyond count.
<ul>
<li>I almost broke down and learned how to write a kickstart file (but didn=
't). 
</li></ul>
</li><li>No guarantees or representations.
<ul>
<li>So far this script has been tested on exactly one set of bare-me=
tal hardware
<ul>
<li>That hardware is not server-grade. (ovirt keeps complaining because I h=
ave not configured Power Management :)</li></ul>
</li></ul>
</li><li>There are a few things that are personal preferences (things I ins=
tall on all my Linux machines)
<ul>
<li>I believe those preferences are clearly marked.</li><li>I am leaving th=
em in because they may (incidentally) be installing some dependencies that =
influence the outcome of the process. 
</li></ul>
</li></ul>
 
I hope to see a day when a similar script is either not needed, or is avail=
able and maintained as part of the Centos distro, or as part of ovirt. =
; Meanwhile we try to muddle through. 
 
I will copy my script into this webmail interface (OWA) (since I am writing=
 at home and this is all I have to work with) and see how bad it mangles it=
.  You'll probably need a wide window so that lines don't wrap, as Mic=
rosoft thinks this OWA interface doesn't
 ever need to let me specify text as "preformat".  I called =
my script ov_host-start.sh 
 
 
# script to prepare Centos 6.5 for o=
virt host install process 
 
echo "=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D  Ted's =
personal preferences--early =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D" 
 
yum -y install nano deltarpm yum-plugin-priorities yum-presto mlocate 
 
echo "=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D end of=
 Ted's personal preferences--early =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D" 
 
yum -y upgrade 
 
echo "....................install some repos (if not already done)....=
.............." 
cd /etc/yum.repos.d 
if [ ! -f glusterfs-epel.repo ] ; then 
  echo "..............installing gluster repo....................=
..." 
  yum -y install wget 
  wget http://download.gluster.org/pub/gluster/glusterfs/LATEST/EPEL.r=
epo/glusterfs-epel.repo 
  echo "..............done installing gluster repo...............=
..." 
fi 
 
if [ ! -f el6-ovirt.repo ] ; then 
  echo "..............installing ovirt repo......................=
." 
  yum -y localinstall http://ovirt.org/releases/ovirt-release-el.noarc=
h.rpm 
  echo "..............done installing ovirt repo.................=
." 
fi 
 
if [ ! -f epel.repo ] ; then 
  echo "..............installing epel repo.......................=
" 
  yum -y localinstall http://mirror.us.leaseweb.net/epel/6/i386/epel-r=
elease-6-8.noarch.rpm 
  echo "..............done installing epel repo..................=
" 
fi 
 
 
echo "........install libvirt............................" 
    yum -y install libvirt qemu-kvm tuned 
echo "........install virt-manager" # with unlisted dependencies<=
br>
yum -y install virt-manager xorg-x11-xauth dejavu-lgc-sans-mono-fonts 
 
# create the ovirtmgmt bridge 
if [ ! -f /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt ]; then 
   echo "........................creating ovirtmgmt bridge..=
...................." 
   service libvirtd start 
   service libvirtd status 
   virsh net-destroy default 
   virsh net-undefine default 
   virsh iface-bridge eth0 ovirtmgmt 
   service network restart 
   service libvirtd stop 
   service libvirtd status 
fi 
 
echo ".........copy tuned profile..............." 
# copy virtual-host --> rhs-virtualization so ovirt is happy 
cp -r /etc/tune-profiles/virtual-host /etc/tune-profiles/rhs-virtualization=
 
 
yum -y install vdsm 
 
echo "=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D  Ted's =
personal preferences--late =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D" 
 
#add lines to send messages to TTY12 
cat /etc/rsyslog.conf | grep tty12 
if [ ! $? -eq 0 ] ; then 
   echo ".......................Adding for tty12............=
........" 
   echo " " >> /etc/rsyslog.conf 
   echo "# Log everything to tty12"  >> /etc=
/rsyslog.conf 
   echo "*.*          &nb=
sp;               &n=
bsp;  /dev/tty12" >> /etc/rsyslog.conf 
   service rsyslog restart 
fi 
 
echo "...........install gkrellm.............." 
yum -y install gkrellm 
 
#add poll=3D0 to kill noveau messages 
cat /boot/grub/grub.conf | grep poll=3D0 
if [ ! $? -eq 0 ] ; then 
   echo "............................Adding poll=3D0........=
.................." 
   sed -i '/^[ \t]kernel*/ s/$/ drm-kms-helper.poll=3D0/g' /boot/=
grub/grub.conf 
fi 
 
</div>
</body>
</html>

--_000_22f073c8f28e423a8959bb2687b19cb9DM2PR05MB320namprd05pro_--

[Users] Centos 6.5 host configuration script -- a tale begun

Ted Miller