Part 1 software R D work summary
Software product upgrade process
After a software product is developed, it does not mean that it will never change. We need to upgrade the original software for the following reasons:
(1) The user puts forward new requirements for software functions, and the currently running software cannot meet the user's new requirements.
(2) bugs in the original software are fixed by u
This document is suitable for all versions of Cloudera Manager 5 and is upgraded using Tarballs tarballs contains Cloudera Manager server and Cloudera manageragent.
Https://www.cloudera.com/documentation/enterprise/latest/topics/cm_ag_ug_cm5_tarballs.html#cm_ag_ug_cm5_tarballs
In most scenarios, upgrading Cloudera Manager is probably not required to turn off large data CDH services, just to stop some dependent services. CDH Daemons continues to run and is unaffected. Cloudera Manager also does
First, the need for database upgradesDatabase upgrades are a common problem for database administrators, if your application uses new features of the new version of the database, and if the database is overloaded, there can be no fundamental improvement through hardware and software adjustments; If you want to enhance the security of your database ; Another reason is that with the advent and maturation of the new version of the database, Oracle stops technical support for older versions of datab
Upgrade oracle11g Database
Oracle support cycle
Oracle is also the same for its own products. For its own products in different periods, the support intensity is different.In general, the supported intensity is divided into three levels: Premier Support (highest-priority Support), Extended Support (medium-priority Support), and Sustaining Support (lowest-priority Support)
1. 5-year standard support service period from product release-Premier support
MySQL upgrades are very necessary. We have listed a variety of questions about MySQL upgrade best practices on Percona support. This article recommends several ways to upgrade MySQL in different situations.
Why is MySQL upgrade necessary? There are many reasons, such as: To use the new features, based on performance considerations, fix bugs. But it's very risky
Nowadays, more and more software has the automatic upgrade function. When users use the software, the software automatically obtains the latest software version information from the specified server through the network, and automatically download the corresponding upgrade files to update the software version, eliminating the trouble of checking the Internet and downloading the latest software version. This
Oracle Database Upgrade has always been a complex project. DBAs need to spend a lot of time and effort on preparation for Product Database Upgrade because of its high complexity, therefore, even if you are fully prepared, unexpected problems may still occur during the upgrade process. In order to complete the upgrade t
Upgrades are not easy, but there are some features worth taking time to understand. The following article describes some tips for avoiding escalation issues.
Upgrading a critical business instance of SQL Server is not easy; it requires thoughtful planning. Unplanned meetings increase the likelihood of experiencing escalation problems, which can affect or delay the upgrade of SQL Server 2014. When planning your SQL Server 2014
Original: MySQL Upgrade method Guide DaquanIn general, when upgrading from one release version to another, we recommend that you upgrade the version in order. For example, to upgrade MySQL 3.23, upgrade to MySQL 4.0 instead of directly upgrading to MySQL 4.1 or MySQL 5.0.If you are comparing the newer version of the
Oracle Database Upgrade (10gR2 to 11gR2)
I have a general understanding of Oracle Database Upgrade today, but there are still many things worth considering.
First, preparations before the upgrade require a lot of work:
1. Testing and preparation, mainly for stress testing of applications. Because of version upgrades, the Optimizer may roll back the SQL Performanc
-u Root--vault-password-file=/path/to/vault_passwd.file base.yml- I hosts.idc2--tags localrepos--limit cdh5-all
5. Upgrade HDFs related content
5.1. Get the current Activie Namenode (a CNAME that always checks and points to active Namenode is created in our DNS server on the line)# host ACTIVE-IDC2-HNNActive-idc2-hnn.heylinux.com is a alias for idc2-hnn2.heylinux.comIdc2-hnn2.heylinux.com has address 172.16.2.12
5.2. Enter Safe mode on active Namen
Cause analysis
Web browsing upgrades are the mercury for most routers and the process of upgrading:
1, download the corresponding model (hardware, software version to be consistent) upgrade procedures;
2, the download of the upgrade package for decompression;
3, into the management interface for the upgrade operation.
Durin
Oracle is also the same for its own products, for its own products at different times, the strength of the support is not the same.Broadly, the strength of the support is divided into three levels: Premier support (highest priority), Extended support (medium-priority), Sustaining support (lowest priority)1.5-year standard support service period from product release-premier2. The subsequent 3-year Extended Support service period---------extended3. Next enter the durable support Service-----------
MySQL Upgrade Method Guide DaquanHttp://blog.sina.com.cn/s/blog_5a8b8eb80100ld7a.htmlIn general, when upgrading from one release version to another, we recommend that you upgrade the version in order. For example, to upgrade MySQL 3.23, upgrade to MySQL 4.0 instead of directly upgrading to MySQL 4.1 or MySQL 5.0. If al
1. Background 1.1. Netty 3.X Series version StatusBased on a survey of some users of the Netty community, combined with the use of Netty in other open source projects, we can see that the current mainstream version of Netty commercial is concentrated on 3.X and 4.X, with the Netty 3.X series version being the most widely used.The Netty community is very active, with the release of the 3.X series from the netty-3.2.4 final version released on February 7, 2011 to the final version of netty-3.10.0
1. Introduction
Database upgrades are often dragged to the "finalize phase" of the release task, which is often left at the end of the project or the last sprint before the release, which is not ideal because:
Every time the software is released on a test environment, the database is often rebuilt, which means that testers lose their test data each time.
If the duration of the project is longer, the upgrade scripts are sometimes delayed until a few
This example is an evening photo of the backlight.
Photographer Jen Yen (Weibo: @ photographer Jen Yen) works
Original film
The face of the original piece is slightly darker and needs adjusting. The color temperature is cold, want
Linux upgrades are quite common, So I studied the Linux upgrades and shared them with you here. I hope they will be useful to you. I am timid, so I am afraid to experience the painful feeling after the Windwos crash, so I am upgrading from Linux 2.4.20Linux to Linux 2.6.18 under VMware, below are some of my experiences and experiences. I will share them with you ~~
I. Because the Linux upgrade does not use any acceleration tool in CERNET
Internet acce
:/etc/init.d/nginx {Start|stop|reload|restart}MySQL State management:/etc/init.d/mysql {start|stop|restart|reload|force-reload|status}memcached State Management:/etc/init.d/memcached {Start|stop|restart}PUREFTPD State Management:/etc/init.d/pureftpd {start|stop|restart|kill|status}PROFTPD State Management:/etc/init.d/proftpd {start|stop|restart|reload}Apache State Management:/etc/init.d/httpd {start|stop|restart|graceful|graceful-stop|configtest|status}
Linux under Nginx, MYSQL/MARIADB, PHP
(This document is named "automatic server system upgrade", which is applicable to all applications.ProgramAutomatic Upgrade .)The previous article describes how to automatically upgrade and update the plug-in when the server or client application is running. For the same reason as above, as, FS, and IRAs must also have the automatic
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