pvc lock

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

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

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

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

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

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

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

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 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:

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

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

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

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

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 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

: 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