However, in this tutorial, I will try to cover some React and Node JS skills that can be used to create this app.Ī little background. The classic todo app has been written so many times that most people have lost count. There are areas we wish we added more coverage, probably not on the first version of this article.Estimated Completion Time: 15-30 minutes Background
Even though configuration was beyond the scope of this article, we managed to get everyday quick refreshers out in the article. In this article we revisited ways to install mongodb on various platforms. tuning reporting tasks email parameter /etc/apticron/nf Conclusion To make it work, we will specify which email to send messages to, and that will be all. That is where the second tool apticron in first paragraph intervenes.
The last issue, is to be able to report problems when an update fails, so that a human can intervene whenever possible. This approach works on Linux(Ubuntu), especially deployed in production, but not Windows nor macOS.
APT::Periodic::Update-Package-Lists "1" # Updates package list once a dayĪPT::Periodic::Download-Upgradeable-Packages "1" # download upgrade candidates once a dayĪPT::Periodic::AutocleanInterval "7" # clean week worth of unused packages once a weekĪPT::Periodic::Unattended-Upgrade "1" # install downloaded packages once a dayĮxample: tuning the tasks parameter /etc/apt//20auto-upgrades The next step is necessary to make sure unattended-upgrades download, install and cleanups tasks have a default period: once, twice a day or a week. $ > db.adminCommand( -backports" Įxample: fine-tune the blacklist and whitelist in /etc/apt//50unattended-upgrades $ sudo killall mongod & sleep 3 & sudo service mongod start $ apt-get install -y mongodb-org=3.4 # Installing 3.4 MongoDB version $ apt-cache policy mongodb-org # Checking installed MongoDB version For example upgrades from any 3.x to 3.6, for this to work, there should be upgraded to an intermediate update from 3.x to 3.4, after which the update from 3.4 to 3.6 becomes possible. The transition that skips two version may be catastrophic. The versions goes by pair numbers, so 3.2, 3.4, 3.6 etc.
Breaking changes happen on major/minor binary updates, but less likely on patch upgrades. It is always a good idea to upgrade often. $ sudo apt-get install -y mongodb-org=3.6.17 mongodb-org-server=3.6.17 mongodb-org-shell=3.6.17 mongodb-org-mongos=3.6.17 mongodb-org-tools=3.6.17Įxample: adding mongodb PPA binaries and installing a particular binary version # To install specific version(3.6.17 in our example) of mongodb, the following command helps # Updating libraries and make the actual install $ echo "deb trusty/mongodb-org/3.6 multiverse" | sudo tee /etc/apt//mongodb-org-3.6.list # create and add list for mongodb (version 3.6, but variations can differ from version to version, the same applies to architecture)
# gnupg should be available in the system Sudo may be skipped if the current user has permission to write and execute programs # Add public key used by the aptitude for further updates Updating/Upgrading or first time fresh install of mongodb can follow next scripts.
Installing software can be done by installing binaries, or using Ubuntu package manager. Except Packages whose PPA have been removed or not available in the registry. $ apt-get dist-upgrade # Installs only new updatesĪt this point most of packages should be installed or upgraded. $ apt-get upgrade # Upgrades current packages That can be achieved on Ubuntu and Aptitude enabled systems as following: $ apt-get update # Fetch list of available updates There is no exception, even when a daily task updates automatically binaries. It is always a good idea to update the system before start working.
How to load mongodb on Docker and Kubernetes.How to manage mongodb in a production environment, either in a containerized or standalone contexts.How to configure mongodb for development and production, as that is subject of another article worth visiting.How to stop/start automatically prior/after system restarts.How to install mongodb on Linux, macOS and Windows.However, the article is designed to help those who bought the book to setup their working environment, as well as the wide audience of software developers who need same information. This article has complementary materials to the Testing nodejs Applications book. This article revisits essentials on how to install mongodb, one of leading noSQL databases on development and production servers.