OpenStack: Difference between revisions
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== Instance not creating == |
== Instance not creating == |
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Check Nova |
Check Nova logs: |
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/var/log/nova/nova-api.log ==> API Call logs |
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/var/log/nova/nova-conductor.log |
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/var/log/nova/nova-compute.log |
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Check Nova Services |
Check Nova Services |
Revision as of 19:44, 20 September 2018
Basics
- Services:
Nova => Compute => EC2 Neutron => Network => VPC Swift => Storage => S3 Glance => Image Services => RabbitMQ => Message Queue Keystone Horizon
Installation
Source: tecmint.com
Topology
Mgmt PG-747 []--------------[OS]-----------------[] ens160 ens192 10.10.30.8/23 No IP address, Promiscuous mode
Initial Steps
Requirement:
CentOS VM 16 GB RAM 100 GB HDD 2 Virtual NICs
Interface Config(ens192):
- Do not change the HWADDR and UUID keys
- Do not assign IP address
- If the OS VM is deployed on top of a vCenter cloud, change the value of Promiscous Mode, MAC address Changes and Forged Transmists to Accept on the PG used for the Provider Network Mapping interface of the VM
nano /etc/sysconfig/network-scripts/ifcfg-ens192
DEVICE=INTERFACE_NAME TYPE=Ethernet ONBOOT="yes" BOOTPROTO="none"
Remove unneeded services:
systemctl stop postfix firewalld NetworkManager systemctl disable postfix firewalld NetworkManager systemctl mask NetworkManager yum remove postfix NetworkManager NetworkManager-libnm
Completely disable Selinux policy
setenforce 0 getenforce vi /etc/selinux/config SELINUX=disabled
Set hostname
hostnamectl set-hostname cloud.centos.lan
Install NTP
yum install ntpdate
Install MariaDB:
yum install mariadb-server systemctl start mariadb.service
Do not set the password for root user, else set it to blank again:
mysqladmin -u root -p<present-password> password
Preparing OpenStack Queens Installation
OpenStack will be deployed with the help of PackStack package provided by rdo repository (RPM Distribution of OpenStack):
yum install https://www.rdoproject.org/repos/rdo-release.rpm
Setup the OpenStack repository:
yum install -y centos-release-openstack-queens yum update -y
Packstack facilitates the deployment on multiple nodes for different components of OpenStack via SSH connections and Puppet modules:
yum install openstack-packstack
Generate an answer file to deploy a standalone installation of Openstack (single node):
packstack --gen-answer-file='date +"%d.%m.%y"'.conf
Edit the generated answer configuration file with a text editor:
vi 03.09.18.conf
CONFIG_NTP_SERVERS=0.ro.pool.ntp.org CONFIG_PROVISION_DEMO=n CONFIG_KEYSTONE_ADMIN_PW=your_password # For Admin user CONFIG_HEAT_INSTALL=y # Install OpenStack Orchestration (HEAT) CONFIG_HORIZON_SSL=y # Access OpenStack dashboard via HTTP with SSL enabled CONFIG_MARIADB_PW=mypassword1234 # The root password for MySQL server CONFIG_NAGIOS_INSTALL=n # Disable Nagios
Enable Root SSH login by uncomment below line:
vi /etc/ssh/sshd_config PermitRootLogin yes
systemctl restart sshd
Start Installation using Packstack Answer File
Using above Answer file:
packstack --answer-file 13.04.16.conf
Default setup without Answer file:
packstack --allinone
Credentials can be found (if you haven’t set it in the answers.txt file) in below file:
cat keystonerc_admin
Verification
source keystonerc_admin openstack user list openstack project list openstack service list openstack catalog list
neutron router-port-list adminrouter neutron router-port-list --column id --column status --column fixed_ips adminrouter neutron port-show 43c9ff00-07ce-4069-a734-4e6d5e795e6a
Troubleshooting
RabbitMQ Troubleshooting
Check if RabbitMQ is running or not:
rabbitmqctl status rabbitmqctl environment
Check if any crash file exists here:
cd /var/lib/rabbitmq/
Restart the RabbitMQ service on the first controller node:
service rabbitmq-server stop service rabbitmq-server start
If the service refuses to stop, then run the pkill command to stop the service, then restart the service:
pkill -KILL -u rabbitmq service rabbitmq-server start
Verify RabbitMQ processes are running:
ps -ef | grep rabbitmq rabbitmqctl list_queues rabbitmqctl list_queues 2>&1 | grep -i error
If there are errors, run the cluster_status command to make sure there are no partitions:
rabbitmqctl cluster_status
Instance not creating
Check Nova logs:
/var/log/nova/nova-api.log ==> API Call logs /var/log/nova/nova-conductor.log /var/log/nova/nova-compute.log
Check Nova Services
> nova service-list
+--------------------------------------+------------------+------------------+----------+---------+-------+----------------------------+-----------------+-------------+ | Id | Binary | Host | Zone | Status | State | Updated_at | Disabled Reason | Forced down | +--------------------------------------+------------------+------------------+----------+---------+-------+----------------------------+-----------------+-------------+ | 4cd953d4-3f77-4c63-9c91-ec61023cd8de | nova-conductor | cloud.centos.lan | internal | enabled | up | 2018-09-20T13:57:43.000000 | - | False | | dd640ca4-cc3e-4aac-af2f-47f9a79aa7fc | nova-scheduler | cloud.centos.lan | internal | enabled | up | 2018-09-20T13:57:42.000000 | - | False | | ec1b8ae1-ac8d-42c4-b78d-b08337e7c190 | nova-consoleauth | cloud.centos.lan | internal | enabled | up | 2018-09-20T13:57:44.000000 | - | False | | cecd523e-eaa0-44cc-a43a-c8986be62d5c | nova-compute | cloud.centos.lan | nova | enabled | up | 2018-09-20T13:57:37.000000 | - | False | +--------------------------------------+------------------+------------------+----------+---------+-------+----------------------------+-----------------+-------------+
Check Service
nova list
Nova Show Instance
nova show 20193e58-2c5b-44c6-a98f-a44e2001934f
Compute Service List
> openstack compute service list +----+------------------+------------------+----------+---------+-------+----------------------------+ | ID | Binary | Host | Zone | Status | State | Updated At | +----+------------------+------------------+----------+---------+-------+----------------------------+ | 3 | nova-conductor | cloud.centos.lan | internal | enabled | up | 2018-09-20T13:55:03.000000 | | 4 | nova-scheduler | cloud.centos.lan | internal | enabled | up | 2018-09-20T13:55:02.000000 | | 5 | nova-consoleauth | cloud.centos.lan | internal | enabled | up | 2018-09-20T13:55:04.000000 | | 6 | nova-compute | cloud.centos.lan | nova | enabled | up | 2018-09-20T13:55:07.000000 | +----+------------------+------------------+----------+---------+-------+----------------------------+
Check System Services:
systemctl list-unit-files
Aodh Exception
Check Aodh Logs:
cat /var/log/aodh/evaluator.log
If you see "Table 'aodh.alarm' doesn't exist" error try to initialize aodh database:
aodh-dbsync
- References
{{#widget:DISQUS
|id=networkm
|uniqid=OpenStack
|url=https://aman.awiki.org/wiki/OpenStack
}}