Category Archives: Virtualization

docker inside openvz

veid=1000
vzctl create $veid –ostemplate centos-7-x86_64 –diskspace 20G
vzctl set $veid –features bridge:on –save
vzctl set $veid –netif_add eth0 –save
vzctl set $veid –netfilter full –save
vzctl set $veid –devnodes net/tun:rw –save
vzctl mount $veid
echo “JoinControllers=cpu,cpuacct,cpuset freezer,devices” >> /vz/root/$veid/etc/systemd/system.conf
vzctl start $veid

mount -t tmpfs tmpfs /sys/fs/cgroup
mkdir /sys/fs/cgroup/freezer,devices
mount -t cgroup cgroup /sys/fs/cgroup/freezer,devices -o freezer,devices
mkdir /sys/fs/cgroup/cpu,cpuacct,cpuset
mount -t cgroup cgroup /sys/fs/cgroup/cpu,cpuacct,cpuset/ -o cpu,cpuacct,cpuset

Install docker:
yum -y install docker-io
docker -d -s vfs

openvz arping: Device venet0 not available, /etc/sysconfig/network-scripts/ifup-aliases[308]: Error, some other host already uses address


diff --git a/sysconfig/network-scripts/ifup-aliases b/sysconfig/network-scripts/ifup-aliases
index e66cb81..2989b8d 100755
--- a/sysconfig/network-scripts/ifup-aliases
+++ b/sysconfig/network-scripts/ifup-aliases
@@ -267,7 +267,8 @@ function new_interface ()
is_available ${parent_device} && \
( grep -qswi "up" /sys/class/net/${parent_device}/operstate || grep -qswi "1" /sys/class/net/${parent_device}/carrier ) ; then
echo $"Determining if ip address ${IPADDR} is already in use for device ${parent_device}..."
- if ! /sbin/arping -q -c 2 -w ${ARPING_WAIT:-3} -D -I ${parent_device} ${IPADDR} ; then
+ /sbin/arping -q -c 2 -w ${ARPING_WAIT:-3} -D -I ${parent_device} ${IPADDR}
+ if [ $? = 1 ]; then
net_log $"Error, some other host already uses address ${IPADDR}."
return 1
fi

wget https://git.fedorahosted.org/cgit/initscripts.git/snapshot/initscripts-55a50ebc591ebd0f4cfbb8ecc204fa20ee6a7368.tar.gz

vzlist | grep VZ_name # Get container ID
cp -v initscripts-55a50ebc591ebd0f4cfbb8ecc204fa20ee6a7368.tar.gz /vz/root/C_ID/root/ # where C_ID is container ID

vzctl enter C_ID
tar xvf initscripts-55a50ebc591ebd0f4cfbb8ecc204fa20ee6a7368.tar.gz sysconfig/network-scripts/ifup-aliases
mv -v /etc/sysconfig/network-scripts/ifup-aliases /etc/sysconfig/network-scripts/ifup-aliases.orig
cp sysconfig/network-scripts/ifup-aliases /etc/sysconfig/network-scripts/ifup-aliases
service network restart

Restarting network (via systemctl): [ OK ]

The box you’re attempting to add doesn’t support the provider you requested

vagrant init serveit/centos-7; vagrant up –provider virtualbox

Error:

=> default: Loading metadata for box ‘serveit/centos-7’
default: URL: https://atlas.hashicorp.com/serveit/centos-7
The box you’re attempting to add doesn’t support the provider
you requested. Please find an alternate box or use an alternate
provider. Double-check your requested provider to verify you didn’t
simply misspell it.

If you’re adding a box from HashiCorp’s Atlas, make sure the box is
released.

Name: serveit/centos-7
Address: https://atlas.hashicorp.com/serveit/centos-7
Requested provider: [:virtualbox]

Fix:

vagrant init jayunit100/centos7; vagrant up –provider virtualbox

esxi get partition list using esxcli

esxcli –server xx.xx.xx.xx –username root –password ‘xxxxxxxxxx’ system coredump partition list
Name Path Active Configured
————————————– ———————————————————- —— ———-
naa.600508e0000000007578aa98b9874c03:7 /vmfs/devices/disks/naa.600508e0000000007578aa98b9874c03:7 false false
naa.600508e0000000007578aa98b9874c03:9 /vmfs/devices/disks/naa.600508e0000000007578aa98b9874c03:9 true true

virtualbox repo

sudo wget http://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo -P /etc/yum.repos.d/

[virtualbox]
name=Fedora $releasever – $basearch – VirtualBox
baseurl=http://download.virtualbox.org/virtualbox/rpm/fedora/$releasever/$basearch
enabled=1
gpgcheck=1
gpgkey=https://www.virtualbox.org/download/oracle_vbox.asc