As we all know, Kubernetes is the best orchestration engine for managing your containerized services. The latest version of Kubernetes available as of today is Latest Release:1.23.3.
Go on over to https://kubernetes.io/releases/ and download it.
MongoDB monitoring service makes it easier for the users to have the ability to monitor their MongoDB clusters popularly known as MMS’. This is an online web interface, which enables you to access the custom dashboards, charts and constitutes the automated alerting options since it uses the clouds technology to get to the servers. These tools do not require minimum updates, setting, and configuration from the user and partly work alone in the monitoring process. Once you have developed this system, it becomes easier to start the administration in the management, deployment, and optimization of MongoDB.
Starting the set up
In order to activate the MongoDB monitoring service, you need to ensure that you have all the details of the Mongo DB community and they include
Opening an account with the software system
Start the download process of the MMS and install the agent on the cluster as directed by the program
In a matter of munities after he update, you will find the data visible and easy to start the process of monitoring.
Different MongoDB monitoring tools
There are various MongoDB monitoring tools monitoring tools and you need to understand the compete process of installing and updating them into the system and this makes it easy to start using it.
Http Console- this tool allows the process of simple diagnostics on the screen
Trending/ monitoring adaptors- this comprises a set of different monitoring and command tools, which include
Other MongoDB monitoring tools
When you want to launch different MongoDB monitoring tools, it is important you understand all the functions and the command tools you will use to initiate the monitoring options.
Flash is by far the most popular streaming format on the Internet today. The most popular RTMP server is the Adobe Flash Media Server by Adobe but the professional version could end up costing you up to $2,000 USD!
There are open source RTMP servers, cheap RTMP servers or simply free RTMP servers to choose from. In this article, we have listed bunch of RTMP server alternatives to Adobe’s popular Flash Media Server.
So next time you have a streaming project in mind, don’t keep cost be the road block for you. Choose one of the alternatives listed above and enjoy.
MongoDB is one of the greatest SQL free database, in the market. There have been different variations and introduction in java and programming but this is one of the best developments in the market. Most of the programmers find it easier to adjust to it since the infrastructure accommodates working abilities with other modes in the market. It enables high scalability, performance, and an open source of document database.
With all the monitoring tools, you will find that it becomes easier to let the program run, and all the servers have the ability to adjust and make necessary updates once issued the commands. All the monitoring and command tools have the effective functioning handles making it easier to control and this means that you do not need to employ people to keep on upgrading or monitoring the system due to the presence of tools that can perfectly handle these functions.
Due to the c ++ language, it becomes easier to deal with emergency issues due to the various database applications but this responds instantly to emergency ,making the system to run on smoothly. With the backup database, you only need to add and remove details on the serve based on your need. It is advisable for one to settle with most of the backup devices but the MongoDB makes it applicable to run multiple servers, and monitor, update them at the same time.
The sharding aspect makes it possible to update servers even when you do not have space by duplicating the space and has different memory storage areas. This enables accommodation of data up to double the current amount you have. This is good for the systems that have various online clients like online gaming and big companies that have loads of data that the clients have to visit online. This makes it easier to hold information and disseminate upon request.
There is the use of multiple document transactions since the program is document oriented and become easier to share. This means that one document used by numerous of people at the same time with no delays.
The program is horizontally scalable meaning it has schema-less databases. This is one of the important aspects in the programs and when compared to the other versions, you find that this is due to effectiveness and ability to use joins for queries.
When you have installed the MongoDB, you have higher chances of securing your data due to the duplication of content, which makes it easier to store in RAM, cloud technology amongst other areas, which enhance the accessibility, and easy to adjust the changes.
However, the MongoDB programming does not offer all the solutions that users want and one of them is higher chances of losing data when you are adapting the content, and hard to retrieve it. This is the reason why you need to be sure of the clients you want to update or database duplication failure to which you have higher chances of never getting back the data. Most of the trained personnel using this system prefer using the replica methods in order to have backup content when doing any form of adjustments to the system.
When you want to invest in the commercial databases, you need to make sure that you settle with some of the best in the market. You should have the ability to know the performance and take time to choose the best.
CouchDB – Document Store
Maps keys to data
It provides a RESTful JSON API and is written in Erlang
You can upload functions to index data and then you can call those functions
Has a very simple REST interface
Provides an innovative replication strategy – nodes can reconnect, sync, and reconcile differences after being disconnected for long periods of time
Enables new distributed types of applications and data
MongoDB – Document Store
Free-form key-value-like data store with good performance
Powerful, expansive query model
Usability rivals that of Redis
Good for complex data storage needs.
Production-quality sharding capabilities
Neo4j – GraphDB
Disk-based
Has a restricted, single-threaded model for graph traversal
Has optional layers to expose Neo4j as an RDF store
Can handle graphs of several billion nodes, relationships, or properties on a single machine
Released under a dual license – free for non-commercial use
Apache Hbase – Wide Column Store/Column Families
Built on top of Hadoop, which has functionality similar to Google’s GFS and MapReduce systems
Hadoop’s HDFS provides a mechanism that reliably stores and organizes large amounts of data
Random access performance is on par with MySQL
Has a high performance Thrift gateway
Cascading source and sink modules
Redis – Key Value/Tuple Store
Provides a rich API and does more operations in memory, using disk only periodically.
It’s extremely fast
Lets you append a value to the end of a list of items that’s already been stored on a key.
Has atomic operations, making it a best-of-breed tally server.
Memcached – Key Value/Tuple Store
High-performance, distributed memory object caching
Free and open source
Generic and agnostic to the objects/strings it caches
It’s all in-memory data
Simple yet elegant design enables easy development and deployment
Language neutral caching scheme.
Most of the large properties on the web are using it now, except for Microsoft
Project Voldemort – Eventually Consistent Key Value Store
Used by LinkedIn
Handles server failure transparently
Pluggable serialization supports rich keys and values including lists and tuples with named fields
Supports common serialization frameworks including Protocol Buffers, Thrift, and Java Serialization
Data items are versioned
Supports pluggable data placement strategies
Memory caching and the storage system are combined
Tokyo Cabinet and Tokyo Tyrant – Key Value/Tuple Store
Supports hashtable mode, b-tree mode, and table mode
It’s fast and straightforward
Good for small to medium-sized amounts of data that require rapid updating and can be easily modeled in terms of keys and values
Cassandra – Wide Column Store/Column Families
First developed by Facebook
SuperColumns can turn simple key-value architecture into an architecture that handles sorted lists, based on an index specified by the user.
Can scale from one node to several thousand nodes clustered in different data centers.
Can be tuned for more consistency or availability
Smooth node replacement if one goes down
When you want to get more details about NOSQL, it is important to have a descriptive look into the books and this makes it easier for one to get the latest versions and models in the creating of this database.
The importance of getting the book is the ability for one to settle with the best descriptions and this means to nothing but the best results. You only need to settle with the best offers in the market can choose the books that have been verified to give you nothing but the best results. Some of the books include-
1] Refactoring: improving the design of existing code- this books is written by martin flower, and describes the different opportunities that the refactoring assistance and how to find it. This is suitable for people who are doing the NOSQL programing basis and gives then the refactoring steps in the developmental areas-link-books.google.co.ke/books?isbn=013306526X
2] Ubuntu unleashed 2012: covering 11.10 and 12.04 written by Matthew Helmke. This is a guide to the Ubuntu operating system covers such topics as installation and configuration, productivity applications, the command line, managing users, networking, remote access, security, kernel, and module management
Link- books.google.co.ke/books?isbn=0672335786
3] Google APPs, the missing manual by Nancy Conner
This book shows these applications together can ease your ability to collaborate with others, and allow you access to your documents, mail and appointments from any computer at any location. Link- books.google.co.ke/books?isbn=0596515790
4] Hadoop- the definitive guide by Tom White –
It offers illuminating case studies that illustrate how Hadoop is used to solve specific problems. Link- books.google.co.ke/books?isbn=1449389732
5] Patterns of Enterprise Application Architecture by Martin Fowler
This book is actually two books in one. The first section is a short tutorial on developing enterprise applications, which you can read from start to finish to understand the scope of the book’s lessons. Link- books.google.co.ke/books?isbn=0133065219
6] CouchDB: The Definitive Guide: The Definitive Guide by Chris Anderson, Jan Lehnardt, Noah Slater
This book, shows how to work with CouchDB through its RESTful web interface, and become familiar with key features such as simple document CRUD (create, read, update, delete), advanced MapReduce, deployment tuning, and more. Link- books.google.co.ke/books?isbn=0596155891
7] Maven: The Definitive Guide
Link books.google.co.ke/books?isbn=0596517335
Written by Sonatype Company – 2008 – Preview
This is one of the descriptive guides that show one the effectiveness of all the NOSQL processes. To use Maven, everything you need to know is in this guide.
8] MongoDB in Action
Link books.google.co.ke/books?isbn=1935182870
Written by Kyle Banker –
MongoDB in Action is a comprehensive guide to MongoDB for application developers. The book begins by explaining what makes MongoDB unique and describing its ideal use cases.
9] Professional NoSQL
Link-books.google.co.ke/books?isbn=1118167805
Written by Shashank Tiwari – 2011
They provide examples, practical solutions, and expert education in new technologies, all designed to help programmers do a better job. wrox.com Programmer Forums Join our Programmer to Programmer forums to ask and answer programming …
10] Core Python Programming: Text
Link-books.google.co.ke/books?isbn=0130260363
Written by Wesley Chun – 2001
New to Python? This is the developer’s guide to Python development!
It is one thing to take a decision that you will switch from your conventional home cable connection
and Wi-Fi setup to the more advanced mobile internet connectivity and it’s a complete different thing
to actually get started using this new technology from scratch. This is why it is recommended that you
have a clear idea about the starting blocks of the mobile internet connectivity technology and ensure
that you seek help from your service provider at the sign of any problem.
Here are the top and most important 3 things about starting off using a mobile wireless internet
connectivity that you need to know in order to make your experience of transition a hassle-free one –
1. Getting Connected
When you have subscribed to a plan with the service provider of wireless mobile internet
connectivity of your choice, you will most probably be having the necessary device and
login credentials with you. In case you don’t have it, then you need not worry. Your service
provider will call you up with a convenient time for you to setup the connection once your
order has been processed and approved.
Remember to check with the service provider about any terms of usage that might be there
for the device for the mobile internet connectivity. Also check to see that all necessary
documentations of the device and the driver media are provided with the device. Many
service providers will also provide a wireless Wi-Fi router for your device in order to enable
you to get the internet connection on multiple devices simultaneously.
2. The Devices For The Connection
Once you have the necessary devices you will need to install the same with the computer.
Connect the device and wait for the computer to recognize the same. Once it has recognized
the device, it will ask for the driver media which you will need to insert for installation of the
driver and the service provider’s software. Once done with these, you are all set to go.
There are various ways in which you can pay for your device, both the USB dongle come
antenna for connecting to the internet and the Wi-Fi router that your service provider provides
along with the package. You might need to pay an initial one time refundable security deposit
for these devices or you might be required to purchase the same from the service provider or
buy your own from a shop. Some service providers like clear internet promotions offer the
device free of any additional cost.
3. Range And Security Of The Devices
Remember that any form of wireless or Wi-Fi device, no matter how strong it is comes with
a range beyond which it will be unable to transmit any data and provide internet connectivity.
You will need to ensure that you take care of this aspect of the router when setting it up in
your home. Also ensure that you have a secure password protecting your internet connection
from unauthorized intrusion.
With these 3 aspects of the getting started of wireless mobile internet connectivity taken care of, you
can rest assured of a good time!
In a world where everything is connected online, it is very easy to lose the files on your
computer or even your own identity. Protecting yourself from the threats in the virtual world is
one of the primary concerns.
There are scams being hatched to hoodwink people into disclosing their personal details and
account numbers and the security breach is too advanced to control. Do worry too much because
there are experts who can guide you through these problems. Given below are five ways in
which you can protect yourself from these online threats.
1. Install Software For Internet Security
It is no longer sufficient to install only antivirus software in your computer or laptop. Use
software that not only prevents your computer from virus threat but also protects you from
spyware and key loggers. The software should also be able to monitor if your computer is being
accessed by any unauthorized person.
Some softwares, which work as both antivirus and protect your computer, may be a little
expensive. But they are worth it. If you do not want something expensive, you can also find
some free software on the net that you can download.
2. Install A Firewall
A firewall acts like buffer zone between your computer and the whole internet. It is created in
a manner that it allows only that information that you allow to pass through it. This is a great
safety device for your computer, as its programming helps you stop the attack from key loggers,
malicious hackers and worms. You can get lot of internet security software that also has a
firewall.
3. Scan Your Computer Every Week
There are several applications that automatically check the computer for any potential threats. If
your software doesn’t carry out automatic checks then you should scan your computer at least
one every week. It may be a hassle when you are working on the computer, so you may do this
when you are not working. This is important to check that your computer and all the data you
store in it are safe.
4. Update All Your Software Regularly
The hackers and people who are phishing are regularly updating their moves, so it is important
that you keep your internet security software updated as well. You do not have to buy an updated
version from the market, most companies allow you to download the latest version from their website once you have bought the product from them.
5. Keep Back Up For All Your Files
You have your whole life on your computer and when your computer falls prey to a virus or is
hacked, you are completely at loss. To avoid this, you should make a smart move and use any
reputed online backup service for your files and documents. There are various services online,
which are trustworthy and you can make full use of them.
Follow these safety measures and be wary when interacting with unknown people on the
internet.
In order for one to get appealing results, they have higher chances of getting positive results in terms of using the best options that enable one to settle with affirmative and timely operational methods
There are different factors that promote backup frequency and they include
The rate of transaction rate
Availability of database
The value of the data company
ARCHIVELOG mode:
SQL> CONNECT sys AS SYSDBA
SQL> STARTUP MOUNT EXCLUSIVE;
SQL> ALTER DATABASE ARCHIVELOG;
SQL> ARCHIVE LOG START;
SQL> ALTER DATABASE OPEN;
databases in ARCHIVELOG mode:
log_archive_start = TRUE
log_archive_dest_1 = ‘LOCATION=/arch_dir_name’
log_archive_dest_state_1 = ENABLE
log_archive_format = %d_%t_%s.arc
difference between restoring and recovering?
SQL> connect SYS as SYSDBA
SQL> RECOVER DATABASE UNTIL TIME ‘2001-03-06:16:00:00’ USING BACKUP CONTROLFILE;
RMAN> run {
set until time to_date(’04-Aug-2004 00:00:00′, ‘DD-MON-YYYY HH24:MI:SS’);
restore database;
recover database;
online database backups?
ALTER TABLESPACE xyz BEGIN BACKUP;
! cp xyzFile1 /backupDir/
ALTER TABLESPACE xyz END BACKUP;
ALTER SYSTEM SWITCH LOGFILE; — Force log switch to update control file headers
ALTER DATABASE BACKUP CONTROLFILE TO ‘/backupDir/control.dbf’;
RMAN can be operated from Oracle Enterprise Manager, or from command line. Here are the command line arguments:
Argument Value Description
—————————————————————————–
target quoted-string connect-string for target database
catalog quoted-string connect-string for recovery catalog
nocatalog none if specified, then no recovery catalog
cmdfile quoted-string name of input command file
log quoted-string name of output message log file
trace quoted-string name of output debugging message log file
append none if specified, log is opened in append mode
debug optional-args activate debugging
msgno none show RMAN-nnnn prefix for all messages
send quoted-string send a command to the media manager
pipe string building block for pipe names
timeout integer number of seconds to wait for pipe input
[oracle@localhost oracle]$ rman
Recovery Manager: Release 10.1.0.2.0 – Production
Copyright (c) 1995, 2004, Oracle. All rights reserved.
RMAN> connect target;
connected to target database: ORCL (DBID=1058957020)
RMAN> backup database;
backup and restore a database using RMAN?
rman target sys/*** nocatalog
run {
allocate channel t1 type disk;
backup
format ‘/app/oracle/backup/%d_t%t_s%s_p%p’
(database);
release channel t1;
}
Example RMAN restore:
rman target sys/*** nocatalog
run {
allocate channel t1 type disk;
# set until time ‘Aug 07 2000 :51’;
restore tablespace users; recover tablespace users;
release channel t1;
MySQL needs to have different backup recovery system, which will prevent loss of files generated into the system. This mostly happens during upgrading of systems or integration of different networks.
Causes of crashes
There are different causes that lead crashing of the system and this makes it harder for one to recover. With a number of different solutions to use, it is wise to understand the methods that cause hitches and try different ways to prevent. Some of the common causes include
Crashing of the operation system
Abrupt and constant power failure
Crashing of the file system
Where there are issues with hardware, motherboard, or hard drive
These are the possible areas ,that lead to constant crashing of the system and this means all data stored have higher chances of getting lost but there are different methods one can use to restore the files.
How to manage using a file snapshot system
It is important for the programmer to take into account different methods that make it easier for one to get the data files in the system. This systematic process needs attention to detail in order to get recommendable results.
– create a client program, and execute FLUSH TABLES WITH READ LOCK.
– create another shell, execute mount vxfs snapshot
– choose first client, execute UNLOCK TABLES.
– Copy files from the snapshot
– Unmount the snapshot.
Tools used in the backup and recovery process
XtraBackup
mydumper
mysqlhotcopy
Zmanda Recovery Manager (ZRM) for My
mysqldump
mylvmbackup
ZRM with XtraBackup (and streaming)
MySQL backup methods and characteristics
Backup uses querying the MySQL server to get database construction and gratified information
Backup is gentler than physical approaches because the server should access database material and adapt it to logical format. If the production is written on the client side, the server must also send it to the holdup program.
Output is particularly bigger than physical backup, predominantly when saved in text setup
Backup and reinstate granularity is obtainable at the server level), database level (all tables in a, or table level. this happens regardless of the type of server of backup device.
The backup should not compose log or configuration files, or database-related files that are not part of databases.
Process of data backup and recovery process sign MySQL
InnoDB: Database not shut down normally.
InnoDB: Starting recovery from log files…
InnoDB: Starting log scan based on checkpoint at
InnoDB: log sequence number 0 13674004
InnoDB: Doing recovery: scanned up to log sequence number 0 13739520
InnoDB: Doing recovery: scanned up to log sequence number 0 13805056
InnoDB: Doing recovery: scanned up to log sequence number 0 13870592
InnoDB: Doing recovery: scanned up to log sequence number 0 13936128
…
InnoDB: Doing recovery: scanned up to log sequence number 0 20555264
InnoDB: Doing recovery: scanned up to log sequence number 0 20620800
InnoDB: Doing recovery: scanned up to log sequence number 0 20664692
InnoDB: 1 uncommitted transaction(s) which must be rolled back
InnoDB: Starting rollback of uncommitted transactions
InnoDB: Rolling back trx no 16745
InnoDB: Rolling back of trx no 16745 completed
InnoDB: Rollback of uncommitted transactions completed
InnoDB: Starting an apply batch of log records to the database…
InnoDB: Apply batch completed
InnoDB: Started
mysqld: ready for connections