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1 为vCenter Server Appliance选择大型存储 在vSphere虚拟化项目中肯定会用到vCenter Server。我在部署vCenter Server Appliance的时候,虽然环境中可能只有10台主机、100个虚拟机的微型或100台主机上限的小型环境,但在选择“存储大小” 阅读全文
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1、测试数据如下: [root@centos79 test]# ls a.txt [root@centos79 test]# cat a.txt 3 4 5 d g 3 s g 8 k s g 2 5 d s c w a r t e 4 s 2、在第2行后插入xxxx [root@centos79 阅读全文
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报错现象如下 System has not been booted with systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is down 解决方案一 检查启动命令 加参数 -itd --p 阅读全文
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一、seq方法和通过内部{begin..end}的性能比较 # time echo {1..100} 1 2 3 ... real 0m0.000s user 0m0.001s sys 0m0.000s # time echo $(seq 100) 1 2 3 ... real 0m0.003s u 阅读全文
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1、Jul 18 02:25:58 lab3 etcd[5649]: the server is already initialized as member before, starting as etcd member...https://www.cnblogs.com/ericnie/p/688 阅读全文