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CENTOS7 Deploying KUBERNETES-ETCD Clusters (iii)

1. Download ETCD PackageWgethttps://github.com/coreos/etcd/releases/download/v3.2.18/etcd-v3.2.18-linux-amd64.tar.gz[email protected] src]# TAR-ZXVF etcd-v3.2.18-linux-amd64.tar.gz[email protected] src]# CD ETCD-V3.2.18-LINUX-AMD64[email protected] etcd-v3.2.18-linux-amd64]# CP ETCD etcdctl/opt/kubernetes/bin/[email protected] etcd-v3.2.18-linux-amd64]# SCP etcd etcdctl 192.168.43.22:/opt/kubernetes/bin/[email protected] etcd-v3.2.18-linux-amd64]# SCP etcd etcdctl 192.168.43.23:/opt/kubernetes/b

CENTOS7 deploying kubernetes Cluster CA certificate creation and distribution (ii)

Cfssl_linux-amd64/opt/kubernetes/bin/cfssl4, three machines free key login; Copy the Cfssl command file to Node1 and Node2[[email protected] ~]# ssh-keygen-t rsa[[email protected] ~]# ssh-copy-id linux-node1[[email protected] ~]# Ssh-copy-id L Inux-node2[[email protected] ~]# ssh-copy-id linux-node3[[email protected] src]# scp/opt/kubernetes/bin/cfssl* 192.168.43.22:/opt/kubernetes/bin[[email protected] src]# scp/opt/kubernetes/bin/cfssl* 192.168.43.23:/opt/ Kubernetes/bin5. Initialize Cfssl[[e

Backup SQL scripts for MySQL database backup and encryption

Code Gpg-c Diary.txt The dialog box will automatically pop up to ask for an encrypted password: After two input password to determine, will be in the directory generated DIARY.TXT.GPG, this is the encrypted file, do not forget to delete the original document OH ~ In the case of decryption, enter: The code is as follows Copy Code GPG DIARY.TXT.GPG Enter the correct password and the diary.txt will be regenerated in the current directo

Linux Basics of Iptables

network interfaceExtended MatchImplicit extension-P TCP--sportport [Port2]--dportport [Port2]-P UDP--sport--dport-P ICMP--icmp-type0: Response 8 : RequestExplicit Extension (/lib/iptables)NetFilter Extensions introduced by extension modules for extending matching criteria, often requiring additional options to define- M Specify Module- m state stateful detection for link implementation--state-mmultiport--source-ports Source Port--destination-ports Destination Port--ports-M limit--limit 3/min--l

Memcached Complete Anatomy Series Tutorial "Turn" memcached Complete Anatomy Series Tutorial –4.memcached distributed algorithm

idea of a virtual node, assign 100~200 points to each physical node (server) on the continuum. This can suppress uneven distribution and minimize cache redistribution when the server is increasing or decreasing.The result of testing with the Memcached client function library, which is described in the following article using the consistent hashing algorithm, is that the hit rate calculation is calculated by increasing the number of servers (n) and the number of servers (m) added to the server:(

How PHP handles passwords in several ways

corresponding salt value and consumption value, you can write this: $options = [ ' Salt ' => custom_function_for_salt (),//write your own code to generate a suitable salt ' Cost ' =>//The default cost is 10 ]; $hash = Password_hash ($password, Password_default, $options); After the password is encrypted, we need to verify the password to determine whether the user entered the correct password: if (Password_verify ($password, $hash)) { Pass } else { Invalid } Quite simply, the direc

Simple way to create and validate hashes in PHP _php tips

. $hash = Password_hash ($password, Password_bcrypt, $options); $2y$10$jdj5jdewjdhsthv6sgviquprrhzngqsuetlk8iem0okh6hpycoo22 Now that the hash is created, we can see that the new hash is worth the information by Password_get_info (). Password_get_info () requires an argument--a hash value--and returns an associative array that contains the algorithm (the integer representation of the hash algorithm used), the algorithm name (the readable name of the hash algorithm used), and the op

PHP Password_hash () Use instance _php instance

First, the prefacePHP5.5 provides a number of new features and API functions, one of which is the password hashing API (creating and verifying hash passwords).It contains 4 functions: Password_get_info (), Password_hash (), Password_needs_rehash (), Password_verify ().Before the PHP5.5, our encryption of the password may be more to use the MD5 or SHA1 encryption methods (no one like the csdn to save the text of it. ), such as:echo MD5 ("123456"); Output: e10adc3949ba59abbe56e057f20f883eBut simpl

PHP adds a pair. The reading function of ZIP file _php Foundation

This module uses the functions of the Zziplib Library by Guido Draheim to transparently read ZIP compressed archives and T He files inside them. This module uses the Zziplib library (Guido Draheim) to read the ZIP-compressed document and the files inside it Please provides a subset of functions provided into a full implementation of the ZIP compression algo Rithm and can only read ZIP file archives. A Normal ZIP utility is needed to create the ZIP fi

PHP for a variety of encryption algorithms, hash algorithm speed test comparison code _php instance

PHP's hash algorithm is more commonly used, now the MD5 is sometimes not very safe, you have to use the other algorithms in Hash_algos (), the following a performance comparison. PHP Code: Define (' Testtime ', 50000); $algos = Hash_algos (); foreach ($algos as $algo) {$st = Microtime (); for ($i = 0; $i

Summary of installation and use of iptables under CENTOS7

multiple IP separated by commas, can also be address segments-D Destination IP-P protocol TCP, UDP, Udplite, ICMP, Icmpv6,esp, Ah, SCTP, MH-I into the network card-O Outgoing network card-j Operation ACCEPT DROP reject or custom chain Extension Module -M TCP--dport 8080 specifies the port, and if-p is specified, the-M can be omitted. Port Segment 8,088:8,090-M multiport--dport 8080 can separate multiple ports with commas 80,8081:8010-M iprange--src-range 192.168.0.1-192.168.0.10 IP Segment-M st

LINUX-IIC Driver (4)-Self-compiling IIC device driver __linux

)); Return-etimedout; } The brief analysis can know, it mainly did 2 things, one is constructs the MSG, another thing is uses the I2c_transfer function to transmit the data, the analysis in the previous section can know, I2C device driver if must read and write the data, all is passes through the i2c_ Transfer it to the I2C bus driver, or I2C controller driver.Corresponding to the construction of MSG we have made it very clear in the last lesson, for the I2c_transfer function, it belongs to

About I2c_smbus Series functions __ Functions

= I2c_m_ten | I2c_client_pec | I2C_CLIENT_SCCB; if (adapter->algo->smbus_xfer) {I2c_lock_adapter (adapter); /* Retry automatically on Arbitration loss * * orig_jiffies = jiffies; for (res = 0, try = 0; try First, the i2c_smbus_xfer_emulated () function is called directly to determine whether the host controller supports Smbus_xfer transmission, but usually I2C the primary controller is not supported. /* Simulate a SMBus command using the I2C

memcached comprehensive analysis of 4. memcached Distributed Algorithm __ algorithm

algo for memcache clients–rjブログ-Users at Last.fmAs for the Perl client, the Cache::memcached::fast and cache::memcached::libmemcached supported consistent hashing, as described in the serial 1th time. Cache::memcached::fast-search.cpan.org cache::memcached::libmemcached-search.cpan.orgBoth interfaces are almost identical to cache::memcached, and if you are using cache::memcached, you can easily replace them. Cache::memcached::fast Libketama, you can

I2C (vi)--s3c2440 access the EEPROM using the I2C interface

After reading the I2C official agreement document, take s3c2440 and EEPROM to verify it. Originally want to use s3c2440 SDA and SCL pin Gpio to simulate, but in the absence of an oscilloscope for a week, how can not come out, finally or give up. Even reference to Linux under the i2c-algo-bit.c and I2C-GPIO.C, Still not tuned out. If there is an oscilloscope, it may soon be possible to find the cause, and now have no idea where the problem is. In fact,

The easiest way to create and validate a hash using PHP 5.5

(mcrypt_dev_urandom)]; After adding the option to the Password_hash () function, our hash value is changed, which is more secure. 1 $hash = Password_hash ($password, Password_bcrypt, $options); 2 $2y$10$jdj5jdewjdhsthv6sgviquprrhzngqsuetlk8iem0okh6hpycoo22 Now that the hash is created, we can see that the new hash is worth the information by Password_get_info (). Password_get_info () requires an argument--a hash value--and returns a

Google PR Update What kind of signal we bring

directory Export-export of Real PR to the Google directory 8 unit Scale (no longer called a PR update as real PR is updated continously and the Google directory PR Change is a export of that updated value). Google Catalog output: Google Catalog index output, the true PR weight distribution to Google index directory output work, divided into 8 levels of importance. BL Export:backlink Export-export of a sample of backlinks which is almost Meaningless as it is only a sample number. This numbe

Cratedb joins principle (Official document)

Tags: bottom GUID workload algo State script Virt org OttJOINsis essential operations in relational databases. They create a link between rows based on common values and allow the meaningful combination of these rows. Cratedb supports joins and due to their distributed nature allows you to work with large amounts of data.In this document we'll present the following topics. First, an overview of the existing types of joins and algorithms provided. Then

Tcpdump catch sql[Turn]

a syntax input file name for tcpdump use (NT: that is, the [emailprotected] Algo: Secret,... In ... Change to a syntax file name). This file will open this file when it is accepted to the first ESP package, so it is best to cancel some of the privileges granted to tcpdump at this time (NT: This can be understood so that when the file is maliciously written, it does not cause too much damage).-F Displays the external IPv4 address (nt:foreign IP V4 add

memcached comprehensive analysis of –4. The distributed algorithm of memcached

, developed by Last.fm. Libketama-a consistent hashing Algo for Memcache clients–rjブログ-the Users at Last.fm As for the Perl client, the Cache::memcached::fast and cache::memcached::libmemcached described in the 1th time of the serialization support consistent Hashing. cache::memcached::fast-search.cpan.org cache::memcached::libmemcached-search.cpan.org Both interfaces are almost identical to cache::memcached, and if you

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