十三、openGauss适配BCLinux欧拉版

一、简介

BCLinux for Euler是中国移动云基于openEuler社区版本的再发型版本
继承了欧拉社区自主可控、丰富的产业生态、全堆栈技术优化、鲲鹏CPU能力等优势

二、欧拉版本openGauss安装问题

1、bclinux版本
BigCloud Enterprise Linux For Euler 21.10 (GNU/Linux 4.19.90-2107.6.0.0100.oe1.bclinux.x86_64 x86_64)

2、使用欧拉版本openGauss初始化报错
./gs_preinstall -U omm -G dbgrp -X /opt/software/openGauss/clusterconfig.xml
"Traceback (most recent call last):
  File "./gs_preinstall", line 40, in <module>
    from gspylib.common.Common import DefaultValue
  File "/opt/software/openGauss/script/gspylib/common/Common.py", line 101, in <module>
    from os_platform.UserPlatform import g_Platform
  File "/opt/software/openGauss/script/os_platform/UserPlatform.py", line 67, in <module>
    g_Platform = UserPlatform().userPlatform
  File "/opt/software/openGauss/script/os_platform/UserPlatform.py", line 50, in __init__
    SUPPORT_WHOLE_PLATFORM_LIST))
Exception: [GAUSS-51900] : The current OS is not supported.Supported platforms are: ['suse', 'redhat', 'centos', 
'euleros', 'openeuler', 'kylin', 'fusionos', 'asianux', 'debian', 'ubuntu']."

3、操作系统检测
vi /opt/software/openGauss/script/os_platform/linux_distro.py
        try:
            etc_dir = os.listdir('/etc')
        except os.error:
            # Probably not a Unix system
            return distname, version, idNum
        etc_dir.sort()
        gFile = None
        _release_filename = re.compile(r'(\w+)[-_](release|version)')
        for file in etc_dir:
            if os.path.islink('/etc/' + file):
                continue
            m = _release_filename.match(file)
            if m is not None:
                _distname, dummy = m.groups()
                if _distname in supported_dists:
                    gFile = file
                    distname = _distname
                    break
大概流程是查找/etc下带release或者version关键字结尾的文件，
for循环去除掉软链接文件
获取文件名（比如openEuler-release）中前半部分然后和supported_dists中的适配

4、查找supported_dists
vi /opt/software/openGauss/script/os_platform/common.py
_supported_dists = (
    'SuSE', 'debian', 'fedora', 'redhat', 'centos', 'euleros', "openEuler",
    'mandrake', 'mandriva', 'rocks', 'slackware', 'yellowdog', 'gentoo',
    "FusionOS", 'UnitedLinux', 'turbolinux', 'ubuntu', 'kylin', 'asianux')

5、查看服务器
[root@gsdb1 opt]# ll /etc/|grep -E 'release$|version$'
-rw-r--r--.  1 root root   60 Dec  2  2021 bclinux-release
lrwxrwxrwx.  1 root root   15 Dec  2  2021 openEuler-release -> bclinux-release
-rw-r--r--.  1 root root  170 Dec  2  2021 os-release
lrwxrwxrwx.  1 root root   15 Dec  2  2021 redhat-release -> bclinux-release
lrwxrwxrwx.  1 root root   15 Dec  2  2021 system-release -> bclinux-release
排除掉软链接文件
bclinux-release、os-release
可以看到bclinux、os无法在_supported_dists中找到

6、解决办法
rm -f /etc/openEuler-release #将软链接删掉
cp /etc/bclinux-release /etc/openEuler-release #直接拷贝一份

7、重新初始化不再报错
./gs_preinstall -U omm -G dbgrp -X /opt/software/openGauss/clusterconfig.xml