How to install Savanna
解壓軟件包中的savanna-all.tar.gz安裝tar -C / -xzf savanna-all.tar.gz安裝了下列軟件
1、/openstack-horizon
2、/etc/savanna/savanna.conf
3、/usr/local/bin/savanna-api和savanna-db-manage
4、/usr/local/lib/python2.7/dist-packages
5、上傳鏡像到glance服務器：glance image-create --name=vanilla-hadoop.image --disk-format=qcow2 --container-format=bare < ./savanna-0.1.2-hadoop.qcow2
一、horizon的安裝和配置。
1、將軟件包中openstack-horizon拷貝到目標機器的根目錄下 /
2、cp openstack_dashboard/local/local_settings.py.example openstack_dashboard/local/local_settings.py
3、修改local_settings.py的配置
[skipped]
OPENSTACK_HOST = "172.18.79.139" <------ KeyStone address
OPENSTACK_KEYSTONE_URL = "http://%s:5000/v2.0" % OPENSTACK_HOST
OPENSTACK_KEYSTONE_DEFAULT_ROLE = "Member"
[skipped]
4、在keystone服務器上面注冊horizon的服務（如果openstack已經安裝成功，這個已經注冊過了，可以省略）。
5、啟動horizon服務 python manage.py runserver 0.0.0.0:6666(端口號可以任意)
6、在客戶端浏覽器上輸入horizon所在的目標主機ip加端口進行訪問。
可能存在的問題
1、缺少lessc的CSS樣式
回答：
解決方案按照如下的次序安裝軟件包中savanna依賴的包.
libc-ares2 amd64
libv8-3.8.9.20 amd64
libev4 amd64
nodejs amd64
node-less
設置樣式鏈接，使用系統/usr/bin/lessc樣式來展示horizon的頁面
ln -s /usr/bin/lessc <path_to_horizon>/bin/less/lessc
二、savanna的安裝和配置
1、修改/etc/savanna/savanna.conf配置文件，可以修改端口prot和進行keystone認證的參數
os_auth_host=10.0.0.100
os_auth_port=35357
os_admin_username=nova
os_admin_password=service_pass
os_admin_tenant_name=service
2、在keystone上面注冊savanna服務
keystone service-create --name savanna --type mapreduce --description "Savanna"
keystone endpoint-create --service-id ed08fa240cbd40898eab09eb9d5c3d0c --internalurl "http://25.8.67.32:9000/v0.2/%(tenant_id)s" --publicurl "http://25.8.67.32:9000/v0.2/%(tenant_id)s" --adminurl "none"
上面service-id為第一步成說那話是的id地址，ip地址為horizon的ip地址，端口為savanna配置文件中指定的端口。
這個過程中可能需要修改keystone所在主機的/root/.bashrc
export OS_TENANT_NAME=admin
export OS_USERNAME=admin
export OS_PASSWORD=keystone_admin
export OS_AUTH_URL="http://25.8.67.32:5000/v2.0/"
source /root/.bashrc
3、產生savanna使用的數據庫
savanna‐db-manage ‐‐config‐file /etc/savanna/savanna.conf 後面參數自己嘗試，可以參見軟件包中savanna-db-manage
4、啟動savanna服務
savanna‐api ‐‐config‐file /etc/savanna/savanna.conf
按照上述的步驟完成後可能存在著一下的問題，就是savanna的提供的服務由於版本號關系不能正確解析，由於savanna-all中的版本是1.0的版本的，由於1.0版本中有些服務還沒有開發完，因此在創建node-temple的時候有問題（cluster-templete可以成功創建），因此我們將將savanna的版本降到穩定版上面，主要替換savanna的api文件以及savanna原始文件中被1.0版本所覆蓋的文件。
a、將軟件包中savanna文件拷貝到目標機器
b、使用setup.py來安裝
c、主要的工作主要包括：替換/usr/local/bin下面關於savanna的運行文件；替換savanna.conf文件這個可能需要注意進行重新進行配置；主要替換/usr/local/lib/python2.7/dist-packages文件中的內容，主要看api文件中的都換成0.2的版本。
sudo savanna--manage --config-file /etc/savanna/savanna.conf reset-db --with-gen-templates
sudo savanna-api --config-file /etc/savanna/savanna.conf
5. Questions and Answers.
Q1: can not create DataNode Template through the website
Answer: go to /openstack-horizon/openstack_dashboard/api/savanna.py and modify line 139 and change "task_tracker_opts" to " job_tracker_opts"
if "tt" in str(node_type).lower():
#template_data["task_tracker"] = task_tracker_opts
template_data["task_tracker"] = job_tracker_opts
if "dn" in str(node_type).lower():
#template_data["data_node"] = data_node_opts
template_data["data_node"] = name_node_opts
Q2: when I start the hadoop cluster and find that the namenode can no get the correct ip addresses of slavers
Answer:go to /usr/local/lib/python2.7/dist-packages/savanna-0.1.2.a3.gda0f4b7-py2.7.egg/savanna/service/cluster_ops.py and modify the function _check_if_up(nova, node):
if len(nets) == 0:
print "VM's networking is not configured yet"
eventlet.sleep(10)
return
This could be improved by another methods.
Q3: when starting hadoop, through the logging file we can see hadoop can not find the host "ubuntu"
Answer: go to cluster_ops.py and modify the following function. adding the mapping between hostname and ip address.
def _generate_hosts(clmap):
hosts = "127.0.0.1 localhost\n"
hosts += "127.0.0.1 ubuntu\n"
Q4: through the log, we found the the hadoop can not create the following files.
Answer: go to cluster_ops.py and add the following code in fucntion _setup_node(node,clmap) before ret=_open_channel_and_execute()
sftp.mkdir('/var/run/hadoop')
sftp.chmod('/var/run/hadoop',0777)
Q5: how to configure the ip to address http://%s:50030 to see the details of jobtracker
Answers: go to node1 and configure the ip routers
ipvsadm -A -t node1:port -s rr
ipvsadm -a -t node1:port -r privateIP:50030 -m -w 1
Q6: hadoop has no privilige to create /tmp/savanna-hadoop-start-all.log
Answers: go to cluster.py and modify the function _start_cluster()
change the direction of the log file.
Q7: Maybe there is somethings wrong in function _setup_ssh_connection(host,ssh) in cluster_opts.py, you should specify the prot 22 in ssh.connection(host,port,username,passowrd)
