132 lines
3.2 KiB
ReStructuredText
132 lines
3.2 KiB
ReStructuredText
Getting Started with Nova
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=========================
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GOTTA HAVE A nova.pth file added or it WONT WORK (will write setup.py file soon)
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Create a file named nova.pth in your python libraries directory
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(usually /usr/local/lib/python2.6/dist-packages) with a single line that points
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to the directory where you checked out the source (that contains the nova/
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directory).
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DEPENDENCIES
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------------
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Related servers we rely on
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* RabbitMQ: messaging queue, used for all communication between components
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* OpenLDAP: users, groups (maybe cut)
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* ReDIS: Remote Dictionary Store (for fast, shared state data)
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* nginx: HTTP server to handle serving large files (because Tornado can't)
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Python libraries we don't vendor
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* M2Crypto: python library interface for openssl
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* curl
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Vendored python libaries (don't require any installation)
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* Tornado: scalable non blocking web server for api requests
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* Twisted: just for the twisted.internet.defer package
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* boto: python api for aws api
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* IPy: library for managing ip addresses
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Recommended
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-----------------
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* euca2ools: python implementation of aws ec2-tools and ami tools
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* build tornado to use C module for evented section
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Installation
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--------------
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::
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# system libraries and tools
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apt-get install -y aoetools vlan curl
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modprobe aoe
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# python libraries
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apt-get install -y python-setuptools python-dev python-pycurl python-m2crypto
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# ON THE CLOUD CONTROLLER
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apt-get install -y rabbitmq-server dnsmasq nginx
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# build redis from 2.0.0-rc1 source
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# setup ldap (slap.sh as root will remove ldap and reinstall it)
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NOVA_PATH/nova/auth/slap.sh
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/etc/init.d/rabbitmq-server start
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# ON VOLUME NODE:
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apt-get install -y vblade-persist
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# ON THE COMPUTE NODE:
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apt-get install -y python-libvirt
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apt-get install -y kpartx kvm libvirt-bin
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modprobe kvm
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# optional packages
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apt-get install -y euca2ools
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Configuration
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---------------
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ON CLOUD CONTROLLER
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* Add yourself to the libvirtd group, log out, and log back in
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* fix hardcoded ec2 metadata/userdata uri ($IP is the IP of the cloud), and masqurade all traffic from launched instances
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::
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iptables -t nat -A PREROUTING -s 0.0.0.0/0 -d 169.254.169.254/32 -p tcp -m tcp --dport 80 -j DNAT --to-destination $IP:8773
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iptables --table nat --append POSTROUTING --out-interface $PUBLICIFACE -j MASQUERADE
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* Configure NginX proxy (/etc/nginx/sites-enabled/default)
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::
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server {
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listen 3333 default;
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server-name localhost;
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client_max_body_size 10m;
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access_log /var/log/nginx/localhost.access.log;
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location ~ /_images/.+ {
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root NOVA_PATH/images;
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rewrite ^/_images/(.*)$ /$1 break;
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}
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location / {
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proxy_pass http://localhost:3334/;
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}
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}
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ON VOLUME NODE
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* create a filesystem (you can use an actual disk if you have one spare, default is /dev/sdb)
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::
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# This creates a 1GB file to create volumes out of
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dd if=/dev/zero of=MY_FILE_PATH bs=100M count=10
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losetup --show -f MY_FILE_PATH
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# replace loop0 below with whatever losetup returns
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echo "--storage_dev=/dev/loop0" >> NOVA_PATH/bin/nova.conf
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Running
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---------
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Launch servers
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* rabbitmq
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* redis
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* slapd
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* nginx
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Launch nova components
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* nova-api
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* nova-compute
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* nova-objectstore
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* nova-volume
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