以下是用OBD黑屏部署 OceanBase社區版時容易碰到的幾個問題及解決思路，供大家參考。

一、

遇坑步驟：用yaml文件部署集群：

obd cluster deploy obtest -c mini-single-example.yaml

報錯：

Package oceanbase-ce-4.2.1.8-108000022024072217.el7 is available.
[ERROR] No such install plugin for oceanbase-ce-4.2.1.8

原因： 版本文件錯誤

解決：刪除版本文件后重試

rm -rf ~/.obd/version
obd cluster deploy obtest -c mini-single-example.yaml                                                                                                                        ml
[WARN] Use centos 8 remote mirror repository for kylin V10
Update OceanBase-community-stable-el8 ok
[WARN] Use centos 8 remote mirror repository for kylin V10
Update OceanBase-development-kit-el8 ok
……省略……

報錯：

Initializes observer work home x
[ERROR] OBD-1002: Fail to init 192.168.254.161 data dir: create /data/1 failed.
[ERROR] OBD-1002: Fail to init 192.168.254.161 data dir: /data/1.

原因：/data目錄的屬主和屬組為root，而安裝用戶為admin

解決：更改/data目錄的屬主和屬組，并刪除/home/admin/observer/下的所有文件后重試

root# chown -R admin:admin /data[admin@KylinV10SP3 example]$ rm -rf /home/admin/observer/*                                                                                                                                              
[admin@KylinV10SP3 example]$ obd cluster deploy obtest -c mini-single-example.yaml

二、

遇坑步驟：啟動obtest集群

[admin@KylinV10SP3 example]$ obd cluster start obtest

報錯：

[ERROR] OBD-1007: (192.168.254.161) The value of the ulimit parameter "open files" must not be less than 20000 (Current value: 1024), Please execute `echo -e "*soft nofile 20000\n* hard nofile 20000" >> /etc/security/limits.d/nofile.conf` as root in 192.168.254.161. if it dosen't work, please check whether UsePAM is yes in /etc/ssh/sshd_config.
[ERROR] OBD-1007: (192.168.254.161) The value of the ulimit parameter "max user processes" must not be less than 120000 (Current value: 26446), Please execute `echo -e "* soft nproc 120000\n* hard nproc 120000" >> /etc/security/limits.d/nproc.conf` as root in 192.168.254.161. if it dosen't work, please check whether UsePAM is yes in /etc/ssh/sshd_config.

原因：資源限制參數未設置或者設置不正確

解決：root用戶修改參數文件后重新啟動集群

echo -e "*soft nofile 20000\n* hard nofile 20000" >> /etc/security/limits.d/nofile.conf
echo -e "* soft nproc 120000\n* hard nproc 120000" >> /etc/security/limits.d/nproc.conf

三、

遇坑步驟：安裝ocp-express后通過瀏覽器訪問

報錯：瀏覽器無法訪問ocp-express的指定地址

+--------------------------------------------------------------------+
|                              obagent                               |
+-----------------+--------------------+--------------------+--------+
| ip              | mgragent_http_port | monagent_http_port | status |
+-----------------+--------------------+--------------------+--------+
| 192.168.254.161 | 8089               | 8088               | active |
+-----------------+--------------------+--------------------+--------+
+--------------------------------------------------------------------+
|                            ocp-express                             |
+-----------------------------+----------+------------------+--------+
| url                         | username | initial password | status |
+-----------------------------+----------+------------------+--------+
| http://192.168.254.161:8180 | admin    | gzL.#6A6         | active |
+-----------------------------+----------+------------------+--------+

原因：防火墻未關閉且未放行8180端口

解決：關閉防火墻，或者放行8180端口后即可正常訪問

#關閉防火墻
systemctl disable firewalld --now
#或者放行8180端口
firewall-cmd --permanent --add-port=8180/tcp

重新訪問：

原因：資源