ansible configuration management example

11Time correct to within 7948 MSPolling server every SBecause it is the intranet, the general Ntpstat can be synchronized quickly.OK, after the native Client configuration is complete, use the SCP copy/etc/ntp.conf to other client machines that need to be synchronized, and start the NTPD service.The operation configuration on other client machines is as follows:The third machine is also configured.[Email p

VLAN is a virtual network, VLAN is divided into three ways: based on port, based on MAC address and ip-based address. In practical applications, the role of virtual network is similar to the division of different working groups, that is, the virtual network can not directly communicate with each other, but must be forwarded through the router, which to some extent improve the security performance of the entire network, but also played a role in improving the efficiency of network transmission.

Android Development Environment configuration (taking windows as an example), androidAndroid Development Environment Configuration Tool If you are going to be engaged in Android development, you can configure the Android development environment by referring to the following steps, whether you choose to develop in eclipse or under AndroidStudio. Android Developme

://s3.51cto.com/wyfs02/M01/7A/AB/wKiom1avSffyKcqbAABL2cWAmwM565.png "title=" 20.png "alt=" Wkiom1avsffykcqbaabl2cwamwm565.png "/>2. Click Xencenterinstaller, eject Xencenter.msi file, download and install Xencenter.go to the control, click Add XenServer server650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/7A/AA/wKioL1avSlbh73xHAABfLngUVCk637.png "title=" 21.png "alt=" Wkiol1avslbh73xhaabflnguvck637.png "/>Input Server After the IP address, user name and password, click Add 650) this.

ready.SummarySteps to resolve if you encounter a SPRINGMVC transaction that cannot be rolled back:1. Check that the configuration file has not joined the transaction management configuration and driver;2. Check whether the database supports transactions (such as MySql4.0 support transactions, ENGINE:INNODB);3. Checks whether the code block throws an exception, a

Rex is an SSH-linked cluster configuration management system written in Perl that is syntactically similar to the Puppet DSL. Chinese version of the official website see http://rex.perl-china.com. This article is only an introductory document that I have written on the departmental Wiki. Common Command Parameters Rex command parameters are many, but because our environment is KRB certified, so some parame

(time.Millisecond * 50) { // do something } }() For example, when we enter the hosts configuration, we must satisfy the following 3, otherwise you will be prompted which line has errors. "^(?:[0-9]{1,3}\\.){3}[0-9]{1,3}(?:[ ]{1,})(?:[ 0-9a-zA-Z._-]{1,}){1,}$" "^[ ]*$" "^#.*" And when we entered the new hosts group, if the hosts group name already exists, or the hosts group name exceeds the leng

To facilitate the configuration of the web. config file, I wrote a common example of the web. config file, which can be modified as needed.Three shortcut methods for creating a web. config file:1. Use Asp.net website Configuration tool in vs2005 to configure2. Compile the machine. config file in the c: \ windows \ Microsoft. NET \ framework \ v2.0.50727 (. NET Fr

the next phpmyadmin, password-free login access. Here we take app_db this database as an example. To implement password-free login, we also need to create a read-only user ilanniread in the MySQL database for the app_db database. Create the SQL statement as follows: Mysql-hrm-bp183j9f186nd4933.mysql.rds.aliyuncs.com-uroot-p ' Ilanni '-e "Grant Select on app_db.* to ' ilanniread ' @ '% ' ID Entified by ' readonlyqwe '; Once Ilanniread is created, we w

Vim Application Example 1 in the system configuration. Configure host name in order to facilitate our local area network to find a specific host, the latter to distinguish between the host, in addition to the IP address, but also to configure a host name for the host, the host name can be accessed through this similar to the name of the domain names to each other.In Linxu systems, the host names are mostly

Article Title: DNS configuration example. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. DNS Server configuration example: 　　 Note: The

# 2018-06-03 #1. python Download: https://www.python.org/downloads/Select the appropriate version of Python for the corresponding platform to install.2. python version OpenCV installation:If the Python environment is already configured globally on your computer, you can install it directly with the PIP Package Management tool and open cmd Direct input:PIP3 Install Opencv-pythonIf the Python environment is not configured or Python is isolated, you can

Simple Network Management Protocol (SNMP), consisting of a set of standards for network management, comprising an application-layer protocol (Application layer protocol), a database model (DB Schema), and a set of resource objects. The following and 111CN Small series look at the CENTOS6 system SNMP monitoring installation configuration and use. 　　Install NET-SN

 concept WFMS (Workflow management System): Http://baike.baidu.com/view/977667.htm WFMC (Workflow Management Alliance): http://baike.baidu.com/view/2497858.htm Sample Project Download Http://pan.baidu.com/s/1gd3iNfH Environment Construction: FBI WARNING Two video, screen recording expert recording, non-virus, the site is willing to take responsibility, download the documents please check MD5 first. 1.Ec

name Node,task tracker know Job tracker. So modify the Conf/core-site.xml on Hadoopdatanode1 and Hadoopdatanode2, respectively: and Conf/mapred-site.xml: Format name Node :Execute on Hadoopnamenode: Hadoop Namenode-format start Hadoop :First, execute the following command on Hadoopnamenode to start all name node, secondary name node, data node: start-dfs.sh You can use the JPS command to

To Create a partition step: (7 steps): 1, FDISK/DEV/SDB//Select the hard disk to be partitioned 2, p//view current partition table or N//create new partition 3, p//create primary partition or E//create extended partition 4, 1~4//primary partition and extended partition selection (1~4), logical partition (5~) 1//input start cylinder 100 or +100m//input up to cylinder face 5, L//input L view partition type and ID 6, t//input

Oracle11gR2RACService-SideTAF configuration example Oracle 11gR2 RAC Service-Side TAF configuration example How To Configure Server Side TransparentApplication Failover [ID 460982.1] [Oracle @ db1 bin] $./srvctl add service-d orcl-s server_taf-r "orcl1, orcl2"-P BASIC -- Here, orcl is the database name, And orcl1

Example of LinuxNFS configuration and deployment procedure-Linux Enterprise Application-Linux server application information. For details, refer to the following section. NFS is a good shared storage system, but its performance is not very good under high load. 10.0.0.1-NFS Server 10.0.0.2-NFS Client On NFS Server: Shared Directory:/nfspool NFS running user: nfsnobody # Mkdir/nfspool # Vi/etc/exports /Nf

" and no timetoidle or timeToLive settings because Shiro manages session expirations EXP licitly. If we set it to false and then set corresponding Timetoidle and TimeToLive properties, Ehcache would evict session s without Shiro ' s knowledge, which would cause many problems (e.g. "My Shiro Session timeout is-minutes-why is N ' t a session available after 2 minutes? " Answer-ehcache expired it due to the Timetoidle property set to + seconds.) Diskpersistent=true since we wa