Category: Service (服务)

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[步骤] Red Hat Satellite 必须软件包版本的查看

正文：

Red Hat Satellite 通常使用指定版本的软件。所以在安装或升级 Red Hat Satellite 时，我们需要设置 Red Hat Satellite 的模块流，在设置模块流以后，相应的软件就被锁定制在对应版本无法升级了。

我们可以通过查看 Red Hat Satellite 的模块流，确认有哪些软件被锁定在了哪些版本里

步骤一：

# dnf module enable satellite

或者：

# dnf module enable satellite:el8
......
Requires         : pki-core:[]
                 : platform:[el8]
                 : postgresql:[12]
                 : ruby:[2.7]

（补充：这里设置 el8 版本的 Red Hat Satellite 模块流为例）

步骤二：

# dnf module info

或者：

# dnf module info satellite:el8
......
Requires         : pki-core:[]
                 : platform:[el8]
                 : postgresql:[12]
                 : ruby:[2.7]

（补充：这里查看 el8 版本的 Red Hat Satellite 模块流为例）

参考文献：

https://docs.redhat.com/en/documentation/red_hat_satellite/6.15/html/installing_satellite_server_in_a_connected_network_environment/installing_server_connected_satellite#configuring-repositories_satellite

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[STEP] Linux Audit Log join /var/log/message

Main Content:

Step One: Modify /audit/plugins.d/syslog.conf file

# vim /audit/plugins.d/syslog.conf

Modify part content as follow:

Modify part content as follow:
......
active = no
......

Step Two: Restart auditd Service

# service auditd restart

Reference:

https://access.redhat.com/solutions/637863

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[DEBUG] Linux resolve df command is stuck

Error phenomenon:

Input df command and the command is stuck
Can not us cd / command to access /(root) directory
Can not us ls / command to display /(root) directory

Analysis:

There may be some network storage disconnected

Solution:

Step One: Use mount command to check if there is any disconnected network storage here

# mount

(Add: At this moment, we can see at least one remote storage mount to local directory. If we cd to this directory, system command prompt will output target is busy)

Step Two: Use unmount command to unmount this disconnected network storage

# umount -f <nfs storage which is stuck>

Or:

# umount -l <nfs storage which is stuck>

Or:

# umount -f -l <nfs storage which is stuck>
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[步骤] SLES 软件库的启用和禁用

注意：

在启用或禁用 SLES 的软件库前，要先注册此 SLES

SLES 到 SUSE 官网
的注册和取消注册
SUSE Repository Mirroring Tool (RMT)
客户端的注册和取消注册

正文：

步骤一：显示所有可用软件库

# SUSEConnect --list-extensions

步骤二：启用软件库

# SUSEConnect -p sle-module-live-patching/15.3/x86_64

（补充：这里以启用 sle-module-live-patching/15.3/x86_64 软件库为例）

步骤三：禁用软件库

# SUSEConnect -d -p sle-module-basesystem/15.3/x86_64

（补充：这里以禁用用 sle-module-live-patching/15.3/x86_64 软件库为例）