Linux • 無限: 在 CentOS / RHEL 7 上，安裝 oVirt 4.2 服務

學習目標：

在 CentOS / RHEL 7 Linux 作業系統上，安裝 oVirt 服務！
使用三部主機進行安裝，一部安裝 ovirt-engine ，一部安裝 postgresql 資料庫，另一部為 Enterprise Linux Hosts！
防火牆的部份，可以先關閉！利用硬體防火牆進行安全的防護即可！

oVirt Engine 安裝設定流程：

安裝相關必要軟體安裝工作！
```
# yum -y upgrade
# reboot
```

安裝 oVirt Engine 相關必要軟體:

# yum install http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm
# yum -y upgrade
# reboot
# yum -y install ovirt-engine

PS：請先將資料庫安裝好！可參考本文 Database 安裝設定流程！

啟動 oVirt Engine 設定流程:

# engine-setup
（出現下列項目問題，請依實際狀況回答即可！）
--== PRODUCT OPTIONS ==--
Configure Engine on this host (Yes, No) [Yes]: 
Configure ovirt-provider-ovn (Yes, No) [Yes]:
Configure Image I/O Proxy on this host (Yes, No) [Yes]:
Configure Data Warehouse on this host (Yes, No) [Yes]: 
Configure VM Console Proxy on this host (Yes, No) [Yes]: 

--== NETWORK CONFIGURATION ==--
Host fully qualified DNS name of this server [ovirt42.hello.tw]:
Do you want Setup to configure the firewall? (Yes, No) [Yes]:

--== DATABASE CONFIGURATION ==--
Where is the DWH database located? (Local, Remote) [Local]: Remote (因為需要使用外部資料庫，所以就選 Remote)
Where is the Engine database located? (Local, Remote) [Local]: Remote
DWH database host [localhost]: database.hello.tw
DWH database port [5432]:
DWH database secured connection (Yes, No) [No]:
DWH database name [ovirt_engine_history]: ovirt
DWH database user [ovirt_engine_history]: ovirt
DWH database password:

ATTENTION

Manual action required.
Please create database for ovirt-engine use.

Engine database host [localhost]: database.hello.tw
Engine database port [5432]: 
Engine database secured connection (Yes, No) [No]:   
Engine database name [engine]:

--== OVIRT ENGINE CONFIGURATION ==--
         
Engine admin password:
Confirm engine admin password:
Use default credentials (admin@internal) for ovirt-provider-ovn (Yes, No) [Yes]:

--== STORAGE CONFIGURATION ==--
Default SAN wipe after delete (Yes, No) [No]: 

--== PKI CONFIGURATION ==--
Organization name for certificate [tdhome.tw]:

--== APACHE CONFIGURATION ==--
Do you wish to set the application as the default page of the web server? (Yes, No) [Yes]:
Do you wish Setup to configure that, or prefer to perform that manually? (Automatic, Manual) [Automatic]:

--== MISC CONFIGURATION ==--
Please choose Data Warehouse sampling scale:
          (1) Basic
          (2) Full
          (1, 2)[1]: 2

--== CONFIGURATION PREVIEW ==--
Please confirm installation settings (OK, Cancel) [OK]:

注意最後的訊息！

Please use the user 'admin@internal' and password specified in order to login
Web access is enabled at:
    http://ovirt42.hello.tw:80/ovirt-engine
    https://ovirt42.hello.tw:443/ovirt-engine
Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20181010114454-hs87tz.log
Generating answer file '/var/lib/ovirt-engine/setup/answers/20181010115332-setup.conf'

由網頁登入後，即可加入主機節點，新增VM ！！

Database 安裝設定流程：

資料庫的部份，只能使用指定的 PostgreSQL 9.5.14 的版本！ovirt－release42 有提供！

安裝相關必要軟體安裝工作！

# yum install http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm
# yum -y upgrade
# reboot

安裝與設定 PostgreSQL 9.5.14 資料庫相關軟體！

# yum install rh-postgresql95-*
# scl enable rh-postgresql95 -- postgresql-setup --initdb
* Initializing database in '/var/opt/rh/rh-postgresql95/lib/pgsql/data'
* Initialized, logs are in /var/lib/pgsql/initdb_rh-postgresql95-postgresql.log

啟動 PostgreSQL 資料庫！

# systemctl enable rh-postgresql95-postgresql
# systemctl start rh-postgresql95-postgresql

設定 PostgreSQL 資料庫 postgres 帳號與密碼！

# su - postgres -c 'scl enable rh-postgresql95 -- psql'
postgres=# ALTER USER postgres WITH PASSWORD 'abc123';
postgres=# \q

設定 PostgreSQL 組態檔！

# cd /var/opt/rh/rh-postgresql95/lib/pgsql/data/
# vim postgresql.conf
（只修改需要修改的部份）
listen_addresses = '*'
autovacuum_vacuum_scale_factor = 0.01
autovacuum_analyze_scale_factor = 0.075
autovacuum_max_workers = 6 
work_mem = 8MB
maintenance_work_mem = 64MB
max_connections = 150

# vim pg_hba.conf
（追加在最後一行）
host    all             all             192.168.100.0/24        md5

# systemctl restart rh-postgresql95-postgresql

修改防火牆設定：

# firewall-cmd --zone=public --add-service=postgresql
# firewall-cmd --permanent --zone=public --add-service=postgresql

登入資料庫內，建立給 oVirt 專用的資料庫與帳號密碼

# su - postgres -c 'scl enable rh-postgresql95 -- psql'
postgres=# CREATE ROLE ovirt WITH LOGIN ENCRYPTED PASSWORD 'abc123';
postgres=# CREATE DATABASE ovirt OWNER ovirt TEMPLATE template0 ENCODING 'UTF8' LC_COLLATE 'en_US.UTF-8' LC_CTYPE 'en_US.UTF-8';
postgres=# \c ovirt;
ovirt=# CREATE EXTENSION "uuid-ossp";
ovirt=# CREATE LANGUAGE plpgsql;
ovirt=# \q

重新啟動 PostgreSQL 資料庫與測試：

# systemctl restart rh-postgresql95-postgresql

登入資料庫內，建立給 Engine 專用的資料庫與帳號密碼

# su - postgres -c 'scl enable rh-postgresql95 -- psql'
postgres=# CREATE ROLE engine WITH LOGIN ENCRYPTED PASSWORD 'abc123';
postgres=# CREATE DATABASE engine OWNER engine TEMPLATE template0 ENCODING 'UTF8' LC_COLLATE 'en_US.UTF-8' LC_CTYPE 'en_US.UTF-8';
postgres=# \c engine;
engine=# CREATE EXTENSION "uuid-ossp";
engine=# CREATE LANGUAGE plpgsql;
engine=# \q

Enterprise Linux Hosts 安裝設定流程：

安裝相關必要軟體安裝工作！

# yum install http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm
# yum -y upgrade

安裝 Cockpit 軟體！
```
# yum install cockpit-ovirt-dashboard
```

啟動 Cockpit 服務！

# systemctl enable cockpit.socket
# systemctl start cockpit.socket

利用 firefox 登入 https://localhost:9090 網頁

參考文獻：

https://ovirt.org/documentation/install-guide/Installation_Guide/

2018年10月9日 星期二

在 CentOS / RHEL 7 上，安裝 oVirt 4.2 服務

2018年10月9日星期二