为什么我的 ubuntu22.04 每安装一个软件，就需要重启很多服务？

Question

sudo apt install -y uuid-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev liblzma-dev libssl-dev libgdbm-compat-dev libffi-dev libreadline-dev

安装一些东西，安装好了，都需要我重启服务

Setting up checkinstall (1.6.2+git20170426.d24a630-2ubuntu2) ...
Processing triggers for man-db (2.10.2-1) ...
Scanning processes...                                                                                                                                                                                                                                                                                   
Scanning candidates...                                                                                                                                                                                                                                                                                  
Scanning processor microcode...                                                                                                                                                                                                                                                                         
Scanning linux images...                                                                                                                                                                                                                                                                                

Running kernel seems to be up-to-date.

The processor microcode seems to be up-to-date.

Restarting services...
Service restarts being deferred:
 /etc/needrestart/restart.d/dbus.service
 systemctl restart docker.service
 systemctl restart networkd-dispatcher.service
 systemctl restart systemd-logind.service
 systemctl restart unattended-upgrades.service
 systemctl restart [e-mail]

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

这就很烦，尤其是还会重启 docker，为什么呢？有的 ubuntu 就不用，有的就用

Answer 1

Ubuntu 22.04 默认自带了 needrestart 这玩意儿，跟 apt 是集成在一起的。如果有哪个后台服务的依赖库升级了，就会触发这个提示。

其实直接按 ESC 跳过就好了，并不是强制重启的。

你要是想完全关闭，可以 apt purge needrestart 卸载掉它。