• linux基础


    1.linux 查看磁盘分区格式

    [root@zxserver102 ~]# df -T /dev/sda1
    Filesystem     Type 1K-blocks  Used Available Use% Mounted on
    /dev/sda1      ext4    487652 40637    421415   9% /boot

    2.格式化硬盘(ext4)

    [root@zxserver102 ~]#  mkfs -t ext4 -c /dev/sdb1
    mke2fs 1.41.12 (17-May-2010)
    Filesystem label=
    OS type: Linux
    Block size=4096 (log=2)
    Fragment size=4096 (log=2)
    Stride=0 blocks, Stripe width=0 blocks
    52428800 inodes, 209714510 blocks
    10485725 blocks (5.00%) reserved for the super user
    First data block=0
    Maximum filesystem blocks=4294967296
    6400 block groups
    32768 blocks per group, 32768 fragments per group
    8192 inodes per group
    Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 
        102400000
    
    Checking for bad blocks (read-only test): done                                
    Writing inode tables: done                            
    Creating journal (32768 blocks): done
    Writing superblocks and filesystem accounting information: done
    
    This filesystem will be automatically checked every 31 mounts or
    180 days, whichever comes first.  Use tune2fs -c or -i to override.

     3.fstab挂载

    #
    # /etc/fstab
    # Created by anaconda on Mon Jul 25 22:51:55 2016
    #
    # Accessible filesystems, by reference, are maintained under '/dev/disk'
    # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
    #
    /dev/mapper/vg_zxserver01-lv_root /                       ext4    defaults        1 1
    UUID=50722c5e-d161-4dd6-9390-e22b74e903d8 /boot                   ext4    defaults        1 2
    /dev/mapper/vg_zxserver01-lv_home /home                   ext4    defaults        1 2
    /dev/mapper/vg_zxserver01-lv_swap swap                    swap    defaults        0 0
    tmpfs                   /dev/shm                tmpfs   defaults        0 0
    devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
    sysfs                   /sys                    sysfs   defaults        0 0
    proc                    /proc                   proc    defaults        0 0
    /dev/sdb1               /zx_db_data             ext4    defaults        1 2

     4.安装epel

    centos6.x:
    yum install http://mirrors.aliyun.com/epel/6/x86_64/epel-release-6-8.noarch.rpm -y
    centos7.x:
    yum install http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm -y

     5.修改密码

    echo "xxxxxxxx"|passwd --stdin root

     6.指定nologin用户执行命令

    为了安全,使用nologin账号来运行程序

    su -s /bin/bash -c "ls" www

    这条命令到底做了什么呢?su -s 是指定shell,这里www用户是nologin用户,是没有默认的shell的,这里指定使用/bin/bash, -c 后面接需要运行的命令, 后面www是用www用户来运行

    7.IPTABLES封IP

    iptables -I INPUT -s 61.147.121.XXX -j DROP

     8.IPTABLES开放端口

    iptables -P INPUT ACCEPT   
    iptables -P OUTPUT ACCEPT 
    #开放所有端口
    iptables -A INPUT -p tcp -m tcp --dport 8080 -j ACCEPT

     9.更改主机名(centos7)

    hostnamectl --static set-hostname  k8s-master

    10.设置代理ip

    export http_proxy="http://child-prc.intel.com:913"
    export https_proxy="http://child-prc.intel.com:913"
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  • 原文地址:https://www.cnblogs.com/vijayfly/p/6004266.html
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