ntpdate rhel 7

Not updated ... Get a job and play, now install the machine ~Install a MySQL to CentOS 7, reprint an article at a time, and record the following:Original address: Http://www.phpini.com/mysql/rhel-centos-yum-install-mysqlAt the beginning of RHEL and CentOS 7, the expected repository system is MariaDB, basically MariaDB

Install and configure PowerDNS and PowerAdmin in RHEL/CentOS 7 PowerDNS is a DNS server running on many Linux/Unix derivative versions. It can be configured using different backend systems, including BIND regional files and relational databases, or Load Balancing/failover algorithms. It can also be configured as a DNS recursion to run as an independent process on the server. The latest version of the PowerD

system:[Email protected] ~]# Vim/etc/sysconfig/iptablesAdd the following line "-A input-p tcp-m State--state NEW--dport 23-j ACCEPT"650 "this.width=650; src= https://s5.51cto.co M/wyfs02/m02/a4/99/wkiol1muuluwqk-3aabaj_qxkho262.png "title=" Qq.png "alt=" wkiol1muuluwqk-3aabaj_qxkho262.png "/ > Save exit! Restart the Iptables service. [Email protected] ~]# service iptables restartIn the Linux 7 system:[Email protected] ~]# firewall-cmd--permanent--ad

30 things to be done after minimal RHEL/CentOS 7 installation (2) 7. install PHP PHP is a server-side scripting language used for basic web services. It is also often used as a general programming language. Install PHP in CentOS with minimal installation: # yum install php After installing php, restart the Apache service to render PHP in the Web browser. # s

30 things to be done after minimal RHEL/CentOS 7 installation (5)30 things to be done after minimal RHEL/CentOS 7 installation (5) 25. install Linux Malware Detect (LMD) Linux Malware Detect (LMD) is an open-source Linux malicious program scanner released under the GNU GPLv2 protocol. It is specially designed for vulne

Linux System Management –rhel-7 Firewall ChapterLinux The firewall functionality of the system is implemented by the kernel:2.0 version of the kernel, the packet filtering mechanism is IPFW , the management tool is Ipfwadm2.2 version of the kernel, the packet filtering mechanism is ipchain , the management tool is IPChains2.4 and later kernels, the packet filtering mechanism is netfilter , the manage

new-m tcp-p TCP--dport 22-j ACCEPT-A input-j REJECT--reject-with icmp-host-prohibited-A forward-j REJECT--reject-with icmp-host-prohibitedCOMMITSave and exit the file. Restart the Iptables service:Service Iptables RestartIn CentOS 7, run the following command to allow the Telnet service to pass through the firewall.Firewall-cmd--permanent--add-port=23/tcpFirewall-cmd--reloadThat's it. Now the Telnet service is ready to use.Create userCreate a test us

First, the installation sequence Shun1. Install the Windows operating system first2. Re-install the RHEL 7 systemIi. in grub, add Windows boot informationBecause after installing RHEL7, only the boot information of Linux, but not the information of Windows system, need to be added manually.1. Modify the Grub custom profile (in this case Windows Server 2008 is installed on drive C, and Windows automatically

First, the installation sequence Shun1. Install the Windows operating system first2. Re-install the RHEL 7 systemIi. in grub, add Windows boot informationBecause after installing RHEL7, only the boot information of Linux, but not the information of Windows system, need to be added manually.1. Modify the Grub custom profile (in this case Windows Server 2008 is installed on drive C, and Windows automatically

RedHat Enterprise Linux 7 starts. The database that comes with the system disk is MARIADB, and the installation process is as follows:1. Mount the installation disk image:mount/dev/cdrom/mnt2. Create a Yum Source:cat >/etc/yum.repos.d/d.repo [d]Baseurl=file:///mntEof3. Import KEY:yum--import/mnt/rpm-gpg-key-redhat-release4. Installation:yum-y install mariadb-server mariadb5. Complete the installation. Start service:systemctl start Mariadb.service6. Se

1. Install VNC Viewer under Windows Client (self-download) This tutorial installs Vnc-5.2.3-windows.exe.2, Linux system download vnc-5.2.3-linux-x64-rpm.tar.gz and in the terminal[Email protected] vnc]#Tar-ZXVF vnc-5.2.3-linux-x64-rpm.Tar. GZ #得到VNC-server-5.2.3-LINUX-X64.RPM and vnc-viewer-5.2.3-linux-X64.rpm[[email protected] VNC #rpm-IVH vnc-viewer-5.2.3-linux-X64.rpm[[email protected] VNC #rpm-IVH vnc-server-5.2.3-linux-X64.rpm[[email protected] VNC #vnclicense-add fbv9v-7z3v9-med3u-47seu-85

# SYSTEMCTSystemctl can list the status of a running service 2. # Systemd-cglsSYSTEMD-CGLS lists the running processes in a tree, which can recursively display control group content3. How do I start/turn off, enable/disable services? Start a service:systemctl start postfix.serviceTo close a service:systemctl stop postfix.serviceTo restart a service:systemctl restart postfix.serviceDisplays the status of a service:systemctl status postfix.serviceenable a service at boot time:systemctl enable

create a mount directory:Mkdir-p/MNT/HRRStart the service:Systemctl Enable RpcbindSystemctl Enable Nfs-serverSystemctl Enable Nfs-lockSystemctl Start RpcbindSystemctl Start Nfs-lockLast mount:Mount-t NFS 192.168.222.1:/mnt/hrr/mnt/hrr/Error free: df-th[[Email protected]]# df-thFile system type capacity used% mount point available/dev/sda2 xfs 11G 3.1G 7.5G 29%/Devtmpfs Devtmpfs 949M 0 949M 0%/devTmpfs tmpfs 958M 144k 958M 1%/DEV/SHMTmpfs tmpfs 958M 9.3M 949M 1%/runTmpfs tmpfs 958M 0 958M 0%/sys

protected] ~]# swapon-s12. Find the user who owns the file and copy itNeed to create a directory to store files beforehand[[email protected] ~]# Find/-user User (lookup user)-exec (followed by command to be used, alias not supported) Cp-a {} (-A For all properties of the copied file)/copy location (= match all previous files) \; (Terminator)13. Create a logical volume and specify the physical expansion unit (physical extent) size[[email protected] ~]# fdisk/dev/device[Email protected] ~]# Partp

rh-firewall-1-input-m State--state new-m tcp-p TCP--dport 22-j accept-a rh-firewall-1-input-m State--stat E new-m tcp-p tcp--dport 4750-j accept-a rh-firewall-1-input-m State--state new-m tcp-p TCP--dport 3306-j List-a rh-firewall-1-input-j REJECT--reject-with icmp-host-prohibited COMMIT The part of the white list is set: -N Whitelist -a whitelist-s 10.202.106.1-j ACCEPT -a whitelist-s 10.202.106.2-j ACCEPT -a whitelist-s 10. 202.106.3-j ACCEPT -a whitelist-s 10.202.106.4-j ACCEPT-a