OpenDataCube安装教程（⼆）——DataCube安装配置
⼆、OpenDataCube的安装
教程：
依赖环境：
PostgreSQL 9.5+
Python 3.6+
1.依赖环境安装
（不同系统，依赖名称可能不同）
提⽰：官⽹给的是针对Ubuntu的，⾃⼰是在Centos上，名称不太⼀样，故不确定安装的依赖是否正确，建议能安装的都安装上。
yum install -y \
autoconf automake build-essential make cmake \
graphviz \
python3-venv \
python3-dev \
libpq-dev \
libyaml-dev \
libnetcdf-dev \
libudunits2-dev
(datacube)[root@song agdc-v2]# yum install -y gcc
(datacube)[root@song agdc-v2]# yum install gcc-c++
#提⽰：Centos与Ubuntu安装的必要依赖的名称不同
#以下是在Centos下的安装
(datacube)[root@song agdc-v2]# yum install python-devel
(datacube)[root@song agdc-v2]# yum install libevent-devel
2.下载源码
git clone github/opendatacube/datacube-core.git
git命令的安装：sudo yum install -y git
3.创建虚拟Python环境
以下两种⽅式⼆选⼀即可，推荐minconda
⽅式⼀：使⽤conda
(base)[root@song ~]# conda config --add channels conda-forge  #添加conda-forge镜像源
(base)[root@song ~]# conda create --name odc python=3.6 datacube #创建python虚拟环境，过程中安装datacube包
⽅式⼆：使⽤Pyenv
pyenv="${HOME}/.envs/odc"# Change to suit your needs
mkdir -p "${pyenv}"
python3 -m venv "${pyenv}"
source"${pyenv}/bin/activate"
pip install -U pip wheel cython numpy
pip install -e '.[dev]'
pip install flake8 mypy pylint autoflake black
4.激活python环境，安装必要的包
(base)[root@song ~]# conda activate odc
(odc)[root@song ~]# conda install jupyter matplotlib scipy
(odc)[root@song software]# cd datacube-core
(odc)[root@song datacube-core]# pip install --upgrade -e .
提⽰：
1）⼀定是在激活的odc环境下进⾏安装测试！！
2）若安装过程中遇到某个库⽆法安装的问题，考虑使⽤conda install 单独安装，如下：
解决⽅法：
(base)[root@song datacube-core]# conda install psycopg2
5.安装Datacube
(odc)[root@song ~]# cd software/datacube-core/
(odc)[root@song datacube-core]# python setup.py install
6.创建⽤户与数据库
(base)[root@song ~]# sudo -i -u postgres
-bash-4.2$ createuser --superuser odctest
-bash-4.2$ psql -c "ALTER USER odctest WITH PASSWORD '123456';"#创建新⽤户
ALTER ROLE
-bash-4.2$ psql -c "CREATE DATABASE datacube OWNER odctest;"#创建⽤户数据库
CREATE DATABASE
(base)[root@song ~]# sudo adduser odctest      #Linux下创建与数据库⽤户同名的⽤户
java父类参数传递给子类(base)[root@song ~]# sudo passwd odctest      #设置⽤户密码
Changing password for user odctest.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
(base)[root@song ~]# su - odctest        #切换到数据库⽤户
[odctest@song ~]$ psql -d datacube        #以odctest的⾝份连接数据库datacube
psql (12.8)
Type "help"for help.
datacube=#
7.创建配置⽂件
(odc)[root@song datacube-core]# vim  ~/.f  #原来不存在该配置⽂件，则直接创建，复制下⾯内容
[datacube]
db_database: datacube
# A blank host will use a local socket. Specify a hostname (such as localhost) to use TCP.
db_hostname:localhost
# Credentials are optional: you might have other Postgres authentication configured.
无主之地2什么时候出的# The default username otherwise is the current user id.
db_username:odctest
db_password:123456
(odc)[root@song ~]# cd ~/
(odc)[root@song ~]# chmod 777 .f    #赋予执⾏权限
8.初始化数据库
(odc)[root@song ~]# cd software/datacube-core/
(odc)[root@song datacube-core]# datacube -v system init
/root/envs/miniconda3/envs/odc/lib/python3.6/site-packages/distributed/config.py:63: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecat ed, as the default Loader is unsafe. Please read /load for full details.
config.update(yaml.load(text))
2021-08-30 14:29:48,548 4550 datacube INFO Running datacube command: /root/envs/miniconda3/envs/odc/bin/datacube -v system init
2021-08-30 14:29:48,609 4550 datacube.drivers.postgres._core INFO Ensuring user roles.
2021-08-30 14:29:48,626 4550 datacube.drivers.postgres._core INFO Creating schema.测试1个接口要花多少时间
2021-08-30 14:29:48,628 4550 datacube.drivers.postgres._core INFO Creating tables.
2021-08-30 14:29:48,695 4550 datacube.drivers.postgres._core INFO Creating triggers.
2021-08-30 14:29:48,725 4550 datacube.drivers.postgres._core INFO Creating added column.
2021-08-30 14:29:48,750 4550 datacube.drivers.postgres._core INFO Adding role grants.
2021-08-30 14:29:48,767 4550 datacube.index.index INFO Adding default metadata types.
Created.
Checking indexes/views.
2021-08-30 14:29:49,135 4550 datacube.drivers.postgres._api INFO Checking dynamic views/indexes. (rebuild views=True, indexes=False)
Done.
9.进⾏测试
单元测试
def函数python的用法
(odc)[root@song datacube-core]# pip install --upgrade -e '.[test]'
...
Installing collected packages: datacube
Attempting uninstall: datacube
Found existing installation: datacube 0.0.0按钮样式
Uninstalling datacube-0.0.0:
Successfully uninstalled datacube-0.0.0
Running setup.py develop for datacube
Successfully installed datacube-1.8.6.dev0+g3a49f78.d2*******
集成测试？
./check-code.sh integration_tests
!过程中遇到的问题：
1.运⾏setup.py时失败，由于使⽤miniconda创建的虚拟环境，⽽setup.py脚本中指定的python路径是默认的，需要删除或者修改。
2.运⾏setup.py时Setup script exited with error: command ‘gcc’ failed with exit status 1
(datacube) [root@song agdc-v2]# yum install -y gcc
(datacube) [root@song agdc-v2]# yum install gcc-c++
3.进⾏数据库初始化时，缺少配置⽂件Error: No datacube config found
解决⽅法：创建配置⽂件
参考官⽅教程：
(odc)[root@song datacube-core]# vim  ~/.f  #原来不存在该配置⽂件，则直接创建，复制下⾯内容
[datacube]
db_database: datacube
# A blank host will use a local socket. Specify a hostname (such as localhost) to use TCP.
db_hostname:localhost
# Credentials are optional: you might have other Postgres authentication configured.
# The default username otherwise is the current user id.
db_username:odctest
db_password:123456
centos和ubuntu(odc)[root@song ~]# cd ~/
(odc)[root@song ~]# chmod 777 .f    #赋予执⾏权限
4.数据库初始化时，认证失败 OperationalError: (psycopg2.OperationalError) FATAL: Ident authentication failed for user “postgres”
解决⽅式：
(odc)[root@song ~]# cp /var/lib/pgsql/12/data/f /var/lib/pgsql/12/data/f.bak  #先做备份
(odc)[root@song ~]# vim /var/lib/pgsql/12/data/f  #把method全部改为trust
# TYPE  DATABASE        USER            ADDRESS                METHOD
# "local" is for Unix domain socket connections only
local  all            all                                    trust
# IPv4 local connections:
host    all            all            127.0.0.1/32            trust
# IPv6 local connections:
host    all            all            ::1/128                trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
local  replication    all                                    trust
host    replication    all            127.0.0.1/32            trust
host    replication    all            ::1/128                trust
host    all            all            0.0.0.0/0              trust
(odc)[root@song ~]# systemctl restart postgresql-12  #重启服务

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