Chrony is an open source free software that keeps the system clock synchronized with the clock server (NTP) to keep time accurate.It consists of two programs: Chronyd and CHRONYC.Chronyd is a daemon that runs in the background to tune the system clock and clock server synchronization running in the kernel. It determines the ratio of the time the computer increase
Chrony software instructions for use, chrony instructions for use1.1.1 chrony Introduction
Chrony is an open-source free software that can keep the system clock synchronized with the clock server (NTP) and keep the time accurate.
It consists of two programs: chronyd and chro
Cloud computing projects such as Greenplum,openstack require Cluster Server deployment, and time between servers needs to be synchronized, but not all machines canDirectly connected to the network, this can be solved with chrony tools.The workaround is to set one of them as a time server, and then synchronize the other servers with this time server.I. Configuring
Chrony Memory Corruption Vulnerability (CVE-2015-1822)Chrony Memory Corruption Vulnerability (CVE-2015-1822)
Release date:Updated on:Affected Systems:
Chrony
Description:
CVE (CAN) ID: CVE-2015-1822Chrony is a tool used for computer time synchronization. It implements the NTP protocol and can be used as both a client and a
********chrony Time Synchronization Service * * * *vim/etc/chrony.conf/* Time synchronization configuration fileService time synchronization party:1. Sign out of an already accepted service3 #server 0.rhel.pool.ntp.org iburst/* Service party must unregister services that are synchronized at other times4 #server 1.rhel.pool.ntp.org Iburst5 #
去同步我的时间 # Serve time even if not synchronized Toany NTP server. Stratum local #不去同步任何人的时间, time synchronization server levelSystemctl Restart Chronyd systemctl Stop Firewalld2. ClientVim/etc/chrony.conf3server 0.rhel.pool.ntp.org iburst 4server 1.rhel.pool.ntp.org iburst====> server Ntpserverip iburst 5server 2.RHEL.P ool.ntp.org iburst====> 6server 3.rhel.pool.n
Tags: time synchronization time serverTime servers with CentOS7, other servers (Centos 6, RHEL7) Synchronize the server timeRHEL 7, CentOS 7 default network Time protocol is ChronyThis tutorial time Server service side host name: Centos7-node3 ip:192.168.231.130Client 1 Host Name: Rhel7-node1Client 2 host Name: Centos6-node2Service side:Check the status of the next Chro
# Systemctl Enable Rpcbind Nfs-servertest environment and other prerequisitesIn this guide we use the following test environment:Client machine [box1:192.168.0.18]The Nfs/kerberos server [box2:192.168.0.20] (also known as the Key Distribution center, the KDC).Note: The Kerberos service is a critical authentication scheme.As you can see, for simplicity, the NFS server and KDC are on the same machine, and of
following test environment:
Client machine [box1:192.168.0.18]
Nfs/kerberos Server [box2:192.168.0.20] (also known as the Key Distribution center, referred to as the KDC).
Note : The Kerberos service is a critical authentication scheme.As you can see, for the sake of simplicity, the NFS server and the KDC are on the same machine, and of course if you have more available machines you may a
Label:How to deploy Rstudio server on a Linux server, configure ODBC after you remotely access SQL Server through the RODBC package background: before writing an article that mentions the recent deployment of Rstudio server (building the analytics environment for the data Analysis Team), it took one weeks to set it up.
PHP is a scripting language that requires the PHP interpreter to parse and run PHP files. When PHP is used as a CGI service Web request, it needs to be embedded in some kind of Web server, most commonly integrated into Apache or IIS, that is, before using PHP, you need to install Apache or IIS, and correctly configure them and PHP integrated parameters. Although this configuration is already very prescriptive and the documentation is very rich, we oft
Platform Description: Two SQL SERVER2005 servers with two identical databases installed on top of each otherRecently, because of the project needs, you need to copy the database on one of the servers on a database on another server, after a lot of Google has finally finished, here to do a detailed record, hoping to help everyone and themselves.One, the first step: SQL Add serverFirst, we need to connect to another
Many corporate LANs now have their own file servers for storing or sharing files for use by local area network users. However, in the process of setting up shared file access, it is common for shared files to be randomly copied, modified, or even deleted, which makes the security management of shared files face a greater risk. How can you make it possible for users to access shared files and prevent improper operation of shared files? I think that can be achieved through the following two ways:
] ~]# firewall-cmd--add-service=ntp--permanentSuccess[Email protected] ~]# Firewall-cmd--reloadSuccess[3] Verify that NTP is working correctly .[email protected] ~]# N tpq-pRemote refID St T when poll reach delay offset jitter==============================================================================*210-140-66-77.J 133.243.238.163 2 U 33 64 7 209.189 53.766 58.151 2.NTP server (chrony) installs the
The difference between Linux server and Windows ServerWhat are the advantages of using Linux as a server versus Windows Server?First, the average failure time is less, and as long as it is configured and used properly, the average failure of Linux (which requires shutdown or restart) is more than a year,Restarting maintenance once a year isn't too much, is it? Ca
---- Set a non-primary key to clustered index [Step 4] to: http://king123654789.iteye.com/blog/1169191
1. View All indexes. Clustered indexes are created on the primary key by default.Sp_helpindex person
2. -- delete the primary key constraint and remove the index constraint on the primary key queried in [1], for example, PK _ person _ 117F9D94. Remove the primary key constraint from the primary key field. This field is not the primary key.Alter table person drop constraint PK _ person _ 117F9
In many cases, we need to write a script to schedule some tasks so that it can work on a regular basis.
After the build 1219 of Ux_pax, this feature was started to be supported. Specific as follows:
Under the Ux_pax directory, create a subdirectory named Cronlist
Edit two scripts, one named On_minutely.pas, the other named On_hourly.pas,
Represents execution once per minute and once per hour, respectively.
The script for timed tasks is run according to Cmd-line mode. Predefined variables i
Domestic Professional Server rental hosting Chess Server game Server video server open area Hang -up serverWonderful solution! Ignore the attack!High-protection Special: website, game, chess best choiceHengyang Telecom (30G single-defense) 8h/8g/1t/exclusive 20M-800 yuanHengyang Double Line (30G single defense) 8h/8g/1
Web server, Application server, HTTP server differencesWhat is the difference between a Web server, an application server, and an HTTP server? What kind of server IIS, Apache, Tomcat, W
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.