2019-07-08Operations1 分钟读完 (大约 116 个字)

[NOTE] Linux防火墙

CentOS firewalld

Firewalld is installed on CentOS 7 as default. Here comes some operations of it.

Check firewall status: sudo firewall-cmd --state
Disable firewalld: sudo systemctl disable firewalld(禁止开机启动)
Stop firewalld: sudo systemctl stop firewalld

Ubuntu 18.04 ufw

check a current firewall status:sudo ufw status
for more verbose:sudo ufw status verbose
enable firewall:sudo ufw enable
disable firewall:sudo ufw disable

基操：

sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow ssh or sudo ufw allow 22
sudo ufw allow 2222
sudo ufw allow http or sudo ufw allow 80
sudo ufw allow https or sudo ufw allow 443
sudo ufw allow 6000:6003/tcp
sudo ufw allow 6000:6003/udp

2019-07-05Operations几秒读完 (大约 16 个字)

[Debug] VMware重启后虚拟机无法联网问题解决

Edit the file /etc/network/interfaces

1
2
3

# The primary network interface
auto ens33
iface ens33 inet dhcp

2019-07-05Operations几秒读完 (大约 49 个字)

[NOTE] ssh免密登陆配置

第n次忘记

2019-07-03Operations2 分钟读完 (大约 322 个字)

[NOTE] Vmvare静态地址相关问题

VMware配置集群的过程中，集群机器重启之后往往会重新分配ip，解决如下。

2019-07-03Operations2 分钟读完 (大约 323 个字)

[NOTE] CentOS换源

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

yum makecache

补充Ubuntu

/etc/apt/sources.list

##中科大源

deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

# 阿里源
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

sudo apt-get update

sudo apt-get upgrade

不加-get会有部分更新失败