rhel 7 docker

Once the image is created, it is important to share and publish. You can publish your own images to the Docker hub, or you can publish them to your own private Docker hub.To publish the image to the Dokcer hub, first register the account on the Dokcer hub and register on this machine (which is ready to submit the mirror to the Docker hub). The process is as follo

output is enforcing, which means that the SELinux policy is already in effect.If debugging is required, you can temporarily set the SELinux mode to allow. No restart is required.# Setenforce 0After debugging, set the SELinux to mandatory mode again, without restarting.# setenforce 1LCTT: In a production environment, SELinux will certainly improve security, but it does bring a lot of trouble to application deployment and operation. Specific deployment needs to be based on the situation. ）24. Ins

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

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

.... Donechanging ownership and permissions .... DoneRunning postinstall scripts .... Doneattempting to start Webmin Mini Web server: Starting Webmin Serverinch/usr/local/program/webmin-1.750Pre-loaded Webmincore. Done***********************************************************************Webmin has been installed and started successfully. Use your webbrowser to go to http://localhost.localdomain:10000/ andLoginWith the name and password you entered previously.[Email protected] webmin-1.750]# fi

, network overload, or intentional attacks are detected is the robustness of the software. The so-called "robustness" refers to the control system maintaining some other performance characteristics under a certain (structure, size) parameter disturbance. According to different definitions of performance, it can be classified into stable robustness and performance robustness. The fixed controller designed with the robustness of the closed-loop system as the target is called the robust controller.

Set iptables firewall whitelist in Linux (RHEL 6 and CentOS 7) Go to the Linux Command Line and edit the firewall rule configuration file iptables.Vi/etc/sysconfig/iptables The following is an example of whitelist settings: # Firewall configuration written by system-config-securitylevel# Manual customization of this file is not recommended.* Filter: Input accept [0: 0]: Forward accept [0: 0]: Output accept

Set a firewall whitelist in Linux (RHEL 6 and CentOS 7) Go to the Linux Command Line and edit the firewall rule configuration file iptables.Vi/etc/sysconfig/iptables The following is an example of whitelist settings: # Firewall configuration written by system-config-securitylevel# Manual customization of this file is not recommended.*filter:INPUT ACCEPT [0:0]:FORWARD ACCEPT [0:0]:OUTPUT ACCEPT [0:0]:RH-Fire

Tags: dev get environ reset root password password Oar https string emctlNote that the official is not advocating the use of root. Download and install MySQL The latest RPM address https://dev.mysql.com/downloads/repo/yum/ #wget https://repo.mysql.com// #rpm-IVH mysql57-community-release-el7-. noarch.rpm#yum Install Mysql-server Reset Root Password # Systemctl Stop mysqld # Systemctl set-environment mysqld_opts="--skip-grant-tables"# systemctl Start mysqld # mysql-u root MySQL>UPDATE Mysql.user-

When installing the database, the default is to turn off SELinux, the following commands we need to remember, in the wrong time may be used. Do not have any command to see the document, to professional.1. Version[[emailprotected] ~]# uname -aLinux roidb01 3.10.0-123.el7.x86_64 #1 SMP Mon May 5 11:16:57 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux[[emailprotected] ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.0 (Maipo)[[emailprotected] ~]#2. View commands[[emailprotected] ~]# g

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

Restart the server, previously able to run the Docker network applications can not be opened normally. Because of the use of CENTOS7, so speculation is likely to be a iptables problem. Docker start or run always prompt for a similar error:No Chain/target/match by that name Google a bit, and some people actually encountered similar problems.Centos 7 of/etc/sysconf