macbook replica

MongoDB Series (ii): MongoDB replica setMongodb2.6 replica set validation deployment and certificationReplica sets have the following characteristics:1. The minimum composition is: Primary,secondary,arbiter, General deployment is: primary,2 secondary.2. The number of members should be odd, and if the addition of arbiter,arbiter for even cases does not save data, only votes.3. Max members, but only 7 voting

Tags: MongoDB replica set frame1, Replication IntroductionMongoDB replication is the replication of data in multiple servers, the purpose of data replication is to provide redundancy and improve the availability of data, the operation of data replication on different database servers to save multiple copies of the data set, so as to avoid single-machine failure and thus loss of data, The replication mechanism also allows you to recover hardware failur

I will talk about the replica set in the previous phase. The primary features of the replica set are embodied in two aspects: 1. the replica set does not have a specific primary database. 2. If there is a fault such as a crash, the cluster selects a database as the primary database, which provides the automatic fault recovery function. Next we will perform the fo

Tags: auth date introduction states like theory knowledge role bash downloadBrief introduction MongoDB Replication (replication) is the process of synchronizing data across multiple servers. The master node records all operations on it, oplog the primary node periodically from the node, and then performs these operations on its own copy of the data, ensuring that the data from the node is consistent with the primary node. Replication provides redundant backups of data and stores copies of data o

About Windows platform Building MONGO database replication Set this topic, I have written two blog posts in frontFirst article: How to build a MONGO database replica set on the Windows platformSecond: Data synchronization and fault adaptive testingIn this article, let's focus on the replication set, and analyze how it worksFirst, common scenariosLoss of network connectivity between application and databaseScheduled outages, power outages, database ser

A complete example of building a MongoDB cluster (replica set + Shard) ...Prepare four machines, each bluejoe1,bluejoe2,bluejoe3, and BLUEJOE0The replica set and the Shard policy determine such as the following: 3 replica sets will be created, named Shard1,shard2,shard3; The above 3 replica sets as 3 shard

# Where and how to St Ore data. Storage:dbpath:/home/dd/mongodb/db #数据文件存放目录 journal:enabled:true # Engine: # Mmapv1: # Wiredtiger: # How The process runs ProcessManagement:fork:true #以守护程序的方式启用, that is, running in the background pidfilepath:/home/dd/mongodb/mongod.pid # Locatio N of Pidfile # network Interfaces net:port:27017 #端口 bindip:0.0.0.0 # Listen to local interface only, comment to Listen on all interfaces. #security: #authorization: Enabled #operationProfiling: replication: strong>

Apple has been so powerful lately that almost all of Apple's products have become synonymous with taste, MacBook Air ultra-thin beautiful figure, of course, also captured the n many people's heart, has become a large number of petty bourgeoisie, but one of the necessary artifacts, but, the load is a price, many domestic web sites, software programs incompatible Mac OS X system, Can only run under Windows System, and you'll need to read the following a

The Windows 8 consumer preview version is released, combining PC and mobile OS into one. As a public beta version of Win8, it focuses on the features of tablet Operation Experience, built-in app stores, cloud services, and social sharing. We plan to use the MacBook Air to experience Windows 8 and try the new version of Windows. MacBook Air SSD hard drive is a good device for Windows 8. Next we will install

Non-destructive installation of leopard + XP dual-system on MacBook (three-segment XP) Unique visitor Recently bought mb466ch/a, pre-installed with leopard, but due to daily work needs to decide to install another XP. After using Boot Camp to easily install XP, the problem arises. XP has only one partition, and common partition tools such as pqmagic cannot be used, I checked the Internet because intel Mac uses the new GPT format, rather than the old

Work under macbook, undermacbookWork under macbook read official documents Https://manuals.info.apple.com/MANUALS/1000/MA1601/zh_CN/macbook_pro_13inch_late_2011_ch.pdfI learned to use gestures, one finger and two fingers. After I became familiar with it, the touchpad was still very easy to use and didn't need a mouse. Familiar with hardware.Commonly used software qq Input Method Http://qq.pinyin.cnInput M

Use the hardware reset function of MacBook Pro to solve some faults. Today, a USB port of the newly purchased MacBook Pro is abnormal. The specific manifestation is that after connecting to the mobile hard drive, the hard drive lights shine but the Mac does not reflect any. Moreover, the iPhone cannot use this USB port for charging or data transmission. After Google, find the following steps to solve the pr

Multi-partition solution for MACOs: 1. the Mac system is not Intel's i386 architecture and does not have a Bios. However, with EFI, It is guided by the EFI management system. 2. The partition table of the Mac system uses GUID instead of MBR. Therefore, if the hard disk is completely handed over to windows for control, the Mac system may fail to start. 3. Any forced operation on MBR will cause failure of the installed dual-system boot. 4. The Mac EFI partition will be locked with GPT. Do not try

For how to install three systems (MACOSX + Windows + LinuxUbuntu) on MacBookPro, I personally tested this version of MB986. After four days of hard work, I wrote a detailed installation tutorial to facilitate the storage, if you have any questions, you can testify. Preparations: 1. One MacBookPro; 2. One apple snowleopard installation disk (recommended for MACOSX10.6 and later); 3. One Windows installation disk ( For how to install three systems (mac OS x + Windows + Linux Ubuntu) on the

Occasionally some tests require more than one computer, or you don't want to mess up your computer's system, so it's important to install a virtual machine. Here's a look at the three virtual machine software you use, and the final decision.Vmware Fusion:Business, fee, 509 USDAdvantages: Rich driver, Linux support perfect. Stable operation.Disadvantages: The official website cannot open, the purchase is inconvenient.VirtualBoxOpen Source, freeBenefits: FreeCons: Unstable, while the virtual machi

MacBook some old, want to try to install a dual system to play, the following is mainly the installation of parrot process, but the installation of Kali similar process, the key points have been pointed out. This article is mainly recorded role, the photo is not clear, if there are any questions can, leave a message. In addition: it is recommended that there is a need to install dual-system students, it is best to install Kali, because parrot some sma

As a front end, back end also need to understand, finally choose PHP to learn, originally wanted to choose Python, after thinking or PHP as Web development more appropriate, the environment finally choose Ubuntu development, because it is the first time, encountered many pits, through unremitting efforts to constantly Google to find the problem, Share the experience and hope that the self-study party like us can get started as soon as possible.First, install the virtual machine, Parallels Deskto

Work under MacBook See official documentsHttps://manuals.info.apple.com/MANUALS/1000/MA1601/zh_CN/macbook_pro_13inch_late_2011_ch.pdfLearn to use gestures, a finger, two fingers, familiar with the touch board is still very useful, do not need a mouse. familiar with hardware.Common software QQ Input methodhttp://qq.pinyin.cnInput Method switch COMMAND + spaceBrew installation SoftwareThe software is installed automatically under Mac, similar to Yum, ap

Open Terminal, enter:sudo su -echo0 >/sys/module/hid_apple/parameters/iso_layoutsudo su-requires root permission, so before using please note that the root has been downloaded, no root Please enter the following code:#没有root的请输入以下代码下载root sudo Install rootAt this point you will find that "~" can be called out, but the reboot system will return to the original, so we will add a line of code in the following rc.local file:Path:/etc/rc.localsudo VI /etc/rc.localWrite the following code:Echo 0 >/sys

These days suddenly found that the MacBook Pro notebook on hand can't sleep, even close the lid. There is no sleep can be observed in the lower right corner of the breathing lamp, if the breathing lamp is solid indicates a problem. The so-called "工欲善其事, its prerequisite", siege lions want to knock more and better code must love the hands of the fighting equipment, not sleep every day not only power consumption, but also the life of the book will be gr