执行apt-get update报错 W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A1715…
报错信息如下 dockerd[8051]: Error starting daemon: Error initializing network controller: error obtaining controller instance: failed to create NAT chain DOCKER: Iptables not found …
摘要 每一个程序员应该都对CPU load不陌生，我们在Linux系统中输入uptime或者top命令就可以看到load average，大家知道这个值代表了CPU的繁忙程度，而且是越低越好。比如下面是我在一台服务器上执行uptime命令的结果： $ uptime 21:18:53 up 176 days, 12:06, 1 user, load …