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Brief analysis Kubernetes Create PV, PVC, Deployment

Brief analysis Kubernetes Create PV, PVC, Deployment Basic Environment#系统环境cat /etc/redhat-releaseCentOS Linux release 7.4.1708 (Core)#k8s client 和 server 的版本信息kubectl versionClient Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.0", GitCommit:"fc32d2f3698e36b93322a3465f63a14e9f0eaead", GitTreeState:"clean", BuildDate:"2018-03-26T16:55:54Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"linux/amd64"}Server Version: version.Info{Majo

How does MySQL use PV and PVC? -5 minutes a day to play Docker container technology (154)

Tags: Kubernetes Docker container TutorialThis section shows how to provide persistent storage for a MySQL database in the following steps: Create PV and PVC. Deploy MySQL. Add data to MySQL. Simulating node downtime, Kubernetes automatically migrates MySQL to other nodes. Verify data consistency. First create the PV and PVC, configured as follows:Mysql-pv.ymlMysql-pvc.yml create MYSQL-PV

How to distinguish the U disk material is PVC or silica gel?

The first step: Touch touch with the hand, silica gel has a feeling of meat, hand contact with silicone is like touching the meat, soft, and PVC will not be such a feeling, is to do the softest is not touch the feeling of meat. The second step: smell with the nose, silica gel is not smelly, and PVC is the smell of plastic, environmentally friendly PVC also has j

Small knitting to teach you how to distinguish a U disk Shell material for PVC or silicone

Now on the market to sell U disk, from the material, there are metal u disk, silicone u disk, Jade U disk, Plastic (PVC) u disk and so on. One PVC and silicone disk is more popular. However, most users are still difficult to distinguish between the two materials, the small part of the talk about the resolution method. The first step: Touch touch with the hand, silica gel has a feeling of meat, hand contact

See the arbitrage model of PVC and LLDPE.

1. seasonal pattern of PVC: From January 1, December to January 1, February, demand shrinking, light production, and low price. 2. seasonal pattern of LLDPE: From January 1, December to January 1, January, the plastic film production and preparation period, general production and sales. 3. generally, the price difference is high around December. the price difference between LLDPE and PVC is generally above

What is PVC plastic flooring?

PVC plastic flooring is widely used in all aspects of home and commerce because of its rich color and diverse colors. So, you know what is plastic flooring, plastic flooring price is generally how much? What are the advantages and disadvantages of plastic flooring? What are the specifications of plastic flooring?Plastic flooring is a very popular in the world today a new light body surface decoration materials, also known as "light body material." is

What is PVC?

PVCThe full name is polyvinyl chloride (polyvinyl chloride). It is a synthetic material. The main component is polyvinyl chloride. In addition, it is added with other components (anti-aging agent, modifier, etc.) to enhance its heat resistance, toughness, and ductility. In essence, it is a vacuum plastic suction film. The top layer of the surface film is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is backcoated adhesive. It is often used for surface pack

? mysql use PV and PVC practice operation record

Create an NFS storage directory[Email protected] ~]# MKDIR/DATA/K8S/MYSQLPV1Create PV[email protected] ~]# cat Mysql-pv.ymlApiversion:v1Kind:persistentvolumeMetadataName:mysqlpv1SpecCapacity:Storage:1giAccessmodes:-ReadwriteoncePersistentvolumereclaimpolicy:retainStorageclassname:nfs1Nfs:Path:/DATA/K8S/MYSQLPV1server:192.168.211.135[Email protected] ~]# Kubectl apply-f mysql-pv.ymlPersistentvolume "Mysqlpv1" created[[email protected] ~]# Kubectl get PVNAME capacity ACCESS MODES RECLAIM POLICY ST

PVC plate Manufacturing

PVC plate Manufacturing Plate Production Rectangle selection. Create a layer. Fill in the foreground color (230,220, 0 ). Cancel the selection. Add a layer style. Projection: Hybrid mode: stacked front slice; Projection Color: 0, 0. Opacity: 75. Angle: 90. Distance: 8, expansion: 0, size: 10. Miscellaneous:

Spin lock, blocking lock, reentrant lock, pessimistic lock, optimistic lock, read-write lock, bias, lightweight lock, heavyweight lock, lock expansion, Object Lock and Class lock

1. Spin Lock A spin lock enables a thread to perform an empty loop without being suspended while not acquiring a lock, (that is, the so-called spin, which is the execution of the empty loop itself), and if the thread can acquire a lock after several empty loops, continue executing. If the thread is still unable to get

Understanding of MySQL optimistic lock, pessimistic lock, shared lock, exclusive lock, row lock, table lock concept

Tags: consistency set get proof hibernate open Prim commit extLab Environment: mysql5.6 Storage Engine: InnoDB When we operate the database, there may be inconsistencies in data due to concurrency problems (data Conflicts)Optimistic lockOptimistic lock is not the database comes with, we need to implement it ourselves. Optimistic locking refers to the operation of the database (update operation), the idea is optimistic, that this operation will not le

Understanding of MySQL optimistic lock, pessimistic lock, shared lock, exclusive lock, row lock, table lock concept

Tags: processing let sha same share data exce where pessimistic lockInconsistencies in data that may occur due to concurrency problems when manipulating databases (data conflicts) ----Optimistic lock Optimistic lock is not the database comes with, we need to implement it ourselves. Optimistic locking refers to the operation of the database (update operation), the idea is optimistic, that this operation will

Simple analysis of SQL Server lock, exclusive lock, shared lock, update lock, optimistic lock, pessimistic lock _mssql

There are two ways to classify locks.(1) From the point of view of database systemLocks are grouped into the following three categories:• Exclusive Lock (Exclusive lock)A resource with exclusive lock locks is allowed only by programs that are locked, and no other action is accepted. When you perform a data Update command, which is the INSERT, UPDATE, or delete co

Java Lock---Bias lock, lightweight lock, spin lock, Heavyweight lock

Before doing a test, repeatedly executed several times, found the result is the same:1. Single-threaded synchronized is the most efficient (at the time it felt its efficiency should be the worst);2. Atomicinteger efficiency is the most unstable, different concurrency performance is not the same: short time low concurrency, efficiency is higher than synchronized, sometimes even higher than longadder, but high concurrency, performance is not as good as synchronized, The performance is very unstabl

MySQL lock mechanism/management (concurrency lock, row lock, table lock, pre-lock, global lock, etc)

MySQL Lab 1 .? MySQL concurrency and Isolation Control Mechanism Meta-data metadata lock: Implemented in the tablecache cache, provides isolation operations for DDL (DataDefinitionLanguage. A special meta-data metadata type called NameLock. (SQL layer) table-level data lock (SQL layer) storage engine-specific mechanism ro MySQL Lab 1 .? MySQL concurrency and Isolation Control Mechanism Meta-data metadata

MySQL-----Lock (Row lock, table lock, page lock, optimistic lock, pessimistic lock)

: a mechanism that coordinates the concurrent access of multiple processes or threads to a resource. Lock conflict is an important factor that affects the performance of concurrent access to a database.The storage engine supports different locking mechanisms Row lock Table lock Page lock

SQL server lock, exclusive lock, shared lock, update lock, optimistic lock, pessimistic lock

There are two lock classification methods.(1) from the perspective of the Database SystemThere are three types of locks:• Exclusive Lock)A resource with an exclusive lock can only be used by locked programs. Other operations on the resource are not accepted. SQL Server automatically uses an exclusive lock when executin

SQL server lock mechanism (II)-Overview (Lock compatibility and lockable resources)-SQL server lock mechanism (I)-Overview (lock type and scope) SQL server lock mechanism (I)-Overview (lock type and scope)

Connect to the SQL server lock mechanism (I)-Overview (lock type and scope) Ii. Complete lock compatibility matrix (see) Correct Code Description: see. III. The following table lists the resources that can be locked by the database engine. Name Resources Abbreviations Encoding Specifies the method to describe the resource when a

Lock transaction Lock update lock hold lock share lock in SQL Server you know what?

Lock a table of a databaseSELECT * from table with (HOLDLOCK)Note: The difference between a table that locks a databaseSELECT * from table with (HOLDLOCK)Other transactions can read the table, but cannot update the deleteSELECT * from table with (TABLOCKX)Other transactions cannot read tables, updates, and deletesFeature description for "Lock options" in SELECT statementsSQL Server provides a powerful and c

Four states of the Javas no lock state bias lock State lightweight lock state heavyweight lock state

One: Java multi-threaded mutex, and Java multithreading introduce the reason for the bias lock and lightweight lock? --->synchronized of the weight of the lock, that is, when the thread runs to the code block, the program's running level from the user state to the kernel state, to suspend all the threads, so that the CPU through the operating system instructions,

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