devstack installation - Compute node

 0. sudo hostnamectl set-hostname compute-141


1. Remove any symlik of /etc/resolve.conf and add

nameserver 8.8.8.8

nameserver 8.8.4.4


2. check df -h [ /, should have good space]


3. checl internet connectivity,


ping www.google.com


4. if possible disable Ipv6, ip allocation #No mandatory


/etc/netplan/50-cloud-init.yaml 



5. And host name entry in /etc/host



give root as default user and sudo priviledge


sudo useradd -s /bin/bash -d /opt/stack -m stack


echo "stack ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/stack


su - stack


sudo apt install git -y



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


# git clone https://opendev.org/openstack-dev/devstack -b stable/ussuri


# All codes have been downloaded in /opt/stack/devstack directory


cd devstack


Edit local.conf and add your desired conf details


run --> ./stack.sh --use-feature=2020-resolver


Working compute node local.conf[change compute IP accordingly]


*****************************************************************************************


[[local|localrc]]


HOST_IP=192.168.181.12 # change this per compute node

SERVICE_HOST=192.168.181.10


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

ADMIN_PASSWORD=admin


DATABASE_PASSWORD=$ADMIN_PASSWORD

MYSQL_PASSWORD=$ADMIN_PASSWORD

RABBIT_PASSWORD=$ADMIN_PASSWORD

SERVICE_PASSWORD=$ADMIN_PASSWORD



MYSQL_HOST=$SERVICE_HOST

RABBIT_HOST=$SERVICE_HOST

GLANCE_HOSTPORT=$SERVICE_HOST:9292

ENABLED_SERVICES=n-cpu,q-agt,placement-client,rabbit


## Neutron options

FIXED_RANGE=10.4.128.0/20

FLOATING_RANGE=192.168.42.128/25

PUBLIC_NETWORK_GATEWAY="192.168.180.1"


# Open vSwitch provider networking configuration

Q_USE_PROVIDERNET_FOR_PUBLIC=True

OVS_PHYSICAL_BRIDGE=br-ex

PUBLIC_INTERFACE=eno2

PUBLIC_BRIDGE=br-ex

OVS_BRIDGE_MAPPINGS=public:br-ex


*****************************************************************************************

post installation



In controller node


run 


#/opt/stack/devstack/tools/discover_hosts.sh



Found 2 cell mappings.

Skipping cell0 since it does not contain hosts.

Getting computes from cell 'cell1': 88ca0441-32c9-487a-8961-a0caaa38fe16

Checking host mapping for compute host 'compute-142': 6c0c5a81-e68d-4294-b3cc-c2cc8a37d27e

Creating host mapping for compute host 'compute-142': 6c0c5a81-e68d-4294-b3cc-c2cc8a37d27e

Found 1 unmapped computes in cell: 88ca0441-32c9-487a-8961-a0caaa38fe16




#openstack hypervisor list


the new compute should be listed as hypervisor



#Add the new compute node in AZ via dashboard and launch instances


Below were alternatives if failed , not needed



======= Installation Output using compute.conf============


Note : No c-vol service in local.conf 



=========================

DevStack Component Timing

 (times are in seconds)

=========================

run_process            4

apt-get-update         6

osc                    0

wait_for_service       2

pip_install           29

apt-get                5

-------------------------

Unaccounted time      89

=========================

Total runtime        135




This is your host IP address: 192.168.181.142

This is your host IPv6 address: ::1


Services are running under systemd unit files.

For more information see:

https://docs.openstack.org/devstack/latest/systemd.html


DevStack Version: victoria

Change: 09430e43c4d13f06f0604e8f8ba35f77a038a980 Merge "Enable access rules tempest tests" 2020-09-27 10:00:45 +0000

OS Version: Ubuntu 18.04 bionic


==== POST Installation ===



# Bridge is not created properly, its created by br-ex to eno2 mapping is not there in "ovs-vs show"

# and ifconfig still doesn't show br-ext and to eno2 mapping


TODO --> local.conf 



use 


## Open vSwitch provider networking options

PHYSICAL_NETWORK=default

OVS_PHYSICAL_BRIDGE=br-ex

PUBLIC_INTERFACE=eno2

Q_USE_PROVIDER_NETWORKING=True


Instead 


#Q_USE_PROVIDERNET_FOR_PUBLIC=True

Q_USE_PROVIDER_NETWORKING=True

PHYSICAL_NETWORK=default

OVS_PHYSICAL_BRIDGE=br-ex

PUBLIC_INTERFACE=eno2

#PUBLIC_BRIDGE=br-ex

#OVS_BRIDGE_MAPPINGS=public:br-ex




DevStack Version: victoria

Change: 680298e7c67a4250f2edf603ffb90510d5cbf496 Merge "Add possibility to not compile ovs and ovn if that's disabled" 2020-09-29 00:33:58 +0000

OS Version: Ubuntu 18.04 bionic





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