AlmaLinux 9 安装 Chkconfig 报 Error unpacking rpm package 错误解决办法 AlmaLinux 9 或者 CentOS 8 以上 安装 Chkconfig 报 Error unpacking rpm package 错误，详细报错参数如下：[root@z062511 ~]# yum install -y chkconfig Last metadata expiration check: 3:01:05 ago on Sat 06 Jul 2024 09:22:16 PM CST. Dependencies resolved. ====================================================================================================================================================================================== Package Architecture Version Repository Size ====================================================================================================================================================================================== Installing: chkconfig x86_64 1.24-1.el9 baseos 161 k Transaction Summary ====================================================================================================================================================================================== Install 1 Package Total download size: 161 k Installed size: 743 k Downloading Packages: chkconfig-1.24-1.el9.x86_64.rpm 365 kB/s | 161 kB 00:00 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 125 kB/s | 161 kB 00:01 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : chkconfig-1.24-1.el9.x86_64 1/1 Error unpacking rpm package chkconfig-1.24-1.el9.x86_64 Verifying : chkconfig-1.24-1.el9.x86_64 1/1 Failed: chkconfig-1.24-1.el9.x86_64 Error: Transaction failed原因:这可能是由现有目录引起： /etc/init.d解决方法:将/etc/init.d 目录移动到/tmp，然后尝试再次安装chkconfig包：# mv /etc/init.d /tmp/init.d.bkyum 安装 chkconfigRunning transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : chkconfig-1.24-1.el9.x86_64 1/1 Running scriptlet: chkconfig-1.24-1.el9.x86_64 1/1 Verifying : chkconfig-1.24-1.el9.x86_64 1/1 Installed products updated. Installed: chkconfig-1.24-1.el9.x86_64 Complete!如果需要，请在安装完成之后从/tmp 移回 /etc/init.d 目录。mv /tmp/init.d.bk /etc/ mv /etc/init.d.bk /etc/init.d

如何在 AlmaLinux 8 / 9 上启用 BBR BBR 代表瓶颈带宽，RTT 是一种拥塞控制系统。您可以在 Linux 桌面上启用 TCP BBR 以改善整体网络浏览体验。默认情况下，Linux 使用 Reno 和 CUBIC 拥塞控制算法。要求：BBR 需要 Linux 内核版本 4.9 或更高版本。由于 AlmaLinux 8 附带 4.18.0 内核，因此我们可以立即启用 BBR。运行以下命令检查可用的拥塞控制算法：sysctl net.ipv4.tcp_available_congestion_control输出：root@vps:~# sysctl net.ipv4.tcp_available_congestion_control net.ipv4.tcp_available_congestion_control = reno cubic运行以下命令检查系统当前使用的拥塞控制算法，sysctl net.ipv4.tcp_congestion_control输出：[root@vps ~]# sysctl net.ipv4.tcp_available_congestion_control net.ipv4.tcp_available_congestion_control = reno cubic在 AlmaLinux 中启用 TCP BBR打开以下配置文件vi /etc/sysctl.conf 以启用 TCP BBRvi /etc/sysctl.conf在配置文件的末尾，添加以下行。net.core.default_qdisc=fq net.ipv4.tcp_congestion_control=bbr保存文件，然后使用此命令刷新配置，sysctl -p输出：[root@vps ~]# sysctl -p net.core.default_qdisc = fq net.ipv4.tcp_congestion_control = bbr现在，验证你的系统是否启用了 BBRsysctl net.ipv4.tcp_congestion_control输出：[root@vps ~]# sysctl net.ipv4.tcp_congestion_control net.ipv4.tcp_congestion_control = bbr完毕！