“Install new system”

重装系统

开root账号

同步时钟 /usr/sbin/ntpdate loginNode, ubuntu 需要安装 sudo apt install ntpdate ubuntu切换时区 sudo dpkg-reconfigure tzdata

NFS + 挂载

挂载: sudo systemctl enable+start nfs; 修改 /etc/fstab; 手动挂载

crontab

crontab -e 和bigMem同步

sar.py依赖 pandas matplotlib, sudo apt install sysstat, sudo vim /etc/default/sysstat, sudo systemctl enable+start sysstat, 切换保存的文件夹(创建soft link /var/log/sysstat->/var/log/sa) 参考链接

账户

自动同步账户信息, 手动同步group信息, 为admin号创建home目录

cp -r /etc/skel /opt/home-admin/yingzhouli
chown -R yingzhouli-admin: /opt/home-admin/yingzhouli

切换yum/apt源

yum:

sudo mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
sudo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sudo yum clean all
sudo yum makecache

apt:

sudo vim /etc/apt/sources.list

edit: (focal is the version name of 20.04, 22.04 is jammy (lsb_release -a, :%s/focal/jammy/g ))

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse

sudo apt-get update

开启10888端口

ssh连接新服务器非22端口报错 ssh_exchange_identification: Connection closed by remote host

排查:

检查/etc/ssh/sshd_config有无明显问题
检查iptables, firewall-cmd有无明显问题
重启sudo systemctl restart sshd
检查日志journalctl -xe
发现22端口正常, 10888端口异常, 排查原因

https://stackoverflow.com/questions/11672525/centos-6-3-ssh-bind-to-port-xxx-on-0-0-0-0-failed-permission-denied

CentOS使用SELinux来增加额外的security. 参考: https://blog.tinned-software.net/change-ssh-port-in-centos-with-selinux/

发现服务器没有命令semanage, 查找yum provides /usr/sbin/semanage得到包policycoreutils-python, 安装yum -y install policycoreutils-python

允许10888端口

sudo semanage port -a -t ssh_port_t -p tcp 10888
sudo semanage port -l | grep ssh
sudo firewall-cmd --add-port=10888/tcp --permanent
sudo firewall-cmd --add-port=10888/udp --permanent
sudo firewall-cmd --reload
sudo vim /etc/ssh/sshd_config
sudo systemctl restart sshd

配合路由器端口转发可外网直连关闭root远程登陆

信任其他机器

sudo firewall-cmd --add-source=192.168.2.100 --zone=trusted --permanent
sudo firewall-cmd --add-source=192.168.2.0/26 --zone=trusted --permanent

安装slurm

参考现有教程

解决bigMem2上lspci看不懂的解决办法

参考答案. 运行命令sudo update-pciidsupdate一下device id和名字的映射表, 然后再运行lspci | grep VGA就能看到GPU型号.