Exercise 3.2 - Add compute host

elsonico · August 2016

Hello,

I have problem with exercise 3.2. I log in to compute-node, run apt-get update and then install vim and git forllowing:

git clone https://git.openstack.org/openstack-dev/devstack

I then edit local.conf and copy the values from Lab Notes. I have:

[...]

HOST_IP=192.168.97.2 # <<-- compute-node IP address

FIRST_HOST=192.168.97.1 # <<-- devstack-cc IP address

[...]

I run ./devstack.sh on compute node and it completes successfully. When I log in to the devstack-cc node first as user developer1, add an instance, and then log out and log in as admin, I don't see seconnd hypervisor nor compute node anywhere.

What would be best way to find out if compute-node ever connects with first-node (devstack-cc)?

The IPs look correct but I don't see any connections.

Thank you!

neghtedari · August 2016

I'm in the learning process myself so I hope I'm not misleading you, forgive me if I am ;

Based on other topics in this blog, it seems that they are recommending that we use a more stable devstack version rather than the one mentioned in our lab documents :

for cloning, the suggestion is to use :

git clone https://git.openstack.org/openstack-dev/devstack -b stable/liberty

for local.conf file, I suggest you remove or comment out the following line :

FIXED_RANGE=10.10...

This is what I used and it worked fine for me :

[[local|localrc]]

HOST_IP=192.168.97.2

FIRST_HOST=192.168.97.1

FLAT_INTERFACE=eth0

FIXED_NETWORK_SIZE=4096

MULTI_HOST=1

LOGFILE=/opt/stack/logs/stack.sh.log

ADMIN_PASSWORD=openstack

MYSQL_PASSWORD=DB-secret

RABBIT_PASSWORD=MQ-secret

SERVICE_PASSWORD=SERVICE-secret

SERVICE_TOKEN=ALongStringUsuallyHere

DATABASE_TYPE=mysql

SERVICE_HOST=$FIRST_HOST

MYSQL_HOST=$FIRST_HOST

RABBIT_HOST=$FIRST_HOST

GLANCE_HOSTPORT=$FIRST_HOST:9292

ENABLED_SERVICES=n-cpu,n-net,c-vol

NOVA_VNC_ENABLED=True

NOVNCPROXY_URL="http://$FIRST_HOST:6080/vnc_auto.html"

VNCSERVER_LISTEN=$HOST_IP

VNCSERVER_PROXYCLIENT_ADDRESS=$VNCSERVER_LISTEN

elsonico · August 2016

Only difference to thre one on Lab Notes seem to be that yours is missing below two lines:


FIXED_RANGE=10.10.128.0/20
FLOATING_RANGE=192.168.100.128/25

Well, I will try anyway.

elsonico · August 2016

Unortunately no change. I removed FIXED_RAGE and FLOATING_RANGE from ~/devstack/local.conf ran ./unstack.sh && ./clean.sh && ./stack.sh

received:

[...]


=========================
DevStack Component Timing
=========================
Total runtime    137
 
run_process       13
apt-get-update    15
pip_install       55
wait_for_service   0
apt-get            7
=========================
 
 
 
This is your host IP address: 192.168.97.2
This is your host IPv6 address: ::1

For whatever reason, when connecting to devstack-cc, compute-node is neither available on compute nodes nor can I see more than one hypervisor.

Thanks.

neghtedari · September 2016

Did you use the stable version of devstack ?

git clone https://git.openstack.org/openstack-dev/devstack -b stable/liberty

I tried it again and it works for me,...

elsonico · September 2016

I missed that. I did think it actually before I tried even first time, but then I decided just to follow the docs. I will try this next,

elsonico · September 2016

Yes that was the thing, thank you!

If any of the admins are reading this, please update the docs, since the Labs don't work if you follow the docs exactly as they are at the moment.

hs8746 · September 2016

On page 2 of 3.2 lab excercise, for Task 1, item4 the command needs to be applied as below:

ubuntu@compute-node: ~$ cd devstack

ubuntu@compute-node: ~/devstack$ ./stack.sh

Hope this helps.

hs8746 · September 2016

My before and after ip output is as below:

ubuntu@compute-node:~$ cat ip.before.out

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group defau

lt

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo