sysadmin

Bookmarks for 4 mar 2015 through 5 mar 2015

These are my links for 4 mar 2015 through 5 mar 2015:

  • EasyEngine – Easy WordPress Nginx – EasyEngine (ee) is a linux shell-script to manage your WordPress-Nginx websites on Ubuntu and Debian server.
  • fresh – Keep your dot files fresh – fresh is a tool to source shell configuration (aliases, functions, etc) from others into your own configuration files. We also support files such as ackrc and gitconfig. Think of it as Bundler for your dot files.
  • Free Cisco Online virtul Lab – Welcome to Cisco's Online Virtual Lab ! If you need to familiarise yourself with the cisco IOS or need some equipment to practice before you attend your cisco certification exams or probably you are preparing for an interview and need to brush up on your skills then you have come to right place Online Virtual Lab Cloud is an on-line lab accessible over the Internet. It consists of a hosted cloud of CCNA and CCNP lab. Within seconds you can connect to practice Cisco IOS commands on various Cisco Routers and Switches. It allows a hands-on learning experience without having to buy expensive equipment and no software installation is required My Online Virtual Lab is made for beginners are looking for sharpen their skills and move to a higher leve and for intermediate are looking for a complex environment to improve them skills with the practice. All Devices are Virtual I Rent A Lab **scenarios** not **equipment** .
  • PassCore: A Self-Service AD Password Change Utility – Home – PassCore is a very simple 1-page web app written in C#, using ASP.NET MVC 4 and Directory Services. It allows users to change their Active Directory password on their own, provided the user is not disabled. PassCore does not require any configuration, as it obtains the principal context from the current domain. I wrote this in less than 2 hours. There really was no free alternative out there so hopefully this saves someone else some time and money. IMPORTANT: If you are going to expose this web app outside your LAN, please use https

Bookmarks for 2 dic 2014 through 3 dic 2014

These are my links for 2 dic 2014 through 3 dic 2014:

  • VPN over SSH – ArchWiki – There are several ways to set up a Virtual Private Network through SSH. Note that, while this may be useful from time to time, it may not be a full replacement for a regular VPN.
  • Simplify Your Life With an SSH Config File · Nerderati – If you're anything like me, you probably log in and out of a half dozen remote servers (or these days, local virtual machines) on a daily basis. And if you're even more like me, you have trouble remembering all of the various usernames, remote addresses and command line options for things like specifying a non-standard connection port or forwarding local ports to the remote machine[…]
  • SSH Tips and Tricks | LUG@GT – This presentation is updated from “SSH Tips and Tricks given on Wed. Feb 28th, 2007

Bookmarks for 15 nov 2014 through 26 nov 2014

These are my links for 15 nov 2014 through 26 nov 2014:

  • Charted – Charted is a tool for automatically visualizing data, created by the Product Science team at Medium. Give it the link to a data file and Charted returns a beautiful, shareable chart of the data. We built Charted with a few core principles in mind: Charted does not store any data. It only fetches and visualizes what the link provides. It also refetches the data every 30 minutes, so the chart is always up-to-date. Charted does not transform or manipulate data. It displays only and exactly what it receives. Any necessary calculations or adjustments must already be reflected in the data. Charted is not a formatting tool. It is deliberately sparse in features. Charted focuses on getting from the data to the visualization with the fewest decisions possible. As a result, we simplified Charted to just a few options. Here’s a walk-through of those options. [ via http://onethingwell.org/post/103638738213 ]
  • Simple Amazon Glacier Uploader – Amazon Glacier is a long-term persistent file-storage system for cold data storage. As a GUI wrapper for the Glacier command line tools, The Simple Amazon Glacier Uploader aims to be an upload and download solution that is as durable as your data. SAGU is a single .jar file Glacier interface written in Java for cross-platform accessibility. The use of Java assures that you will have access to your files regardless of your operating system when it is time to retrieve your data.
  • Snapper, The ultimate Snapshot Tool for Linux – Snapper is a tool for Linux filesystem snapshot management. Apart from the obvious creation and deletion of snapshots, it can compare snapshots and revert differences between snapshots. In simple terms, this allows root and non-root users to view older versions of files and revert changes. The features include: Manually create snapshots Automatically create snapshots, e.g. with YaST and zypp Automatically create timeline of snapshots Show and revert changes between snapshots Works with btrfs, ext4 and thin-provisioned LVM volumes Supports Access Control Lists and Extended Attributes Automatic cleanup of old snapshots Command line interface D-Bus interface PAM module to create snapshots during login and logout

Bookmarks for 5 nov 2014 from 10:48 to 13:51

These are my links for 5 nov 2014 from 10:48 to 13:51:

  • Configuring OpenLDAP pass-through authentication to Active Directory – Alex Tcherniakhovski – Security – Site Home – MSDN Blogs – This particular functionality of OpenLDAP should be of special interest for environments where long term co-existence between OpenLDAP and Active Directory is required. By establishing pass-through authentication the following advantages could be achieved: Great end-user experience. No need to remember multiple passwords Increased security, due to the reduction of the attack surface (one less password store in the environment) Single password policy The rest of the post will expand on the instructions provided by the OpenLDAP 2.4 Administration guide on establishing pass-through authentication from OpenLDAP to Active Directory. Specifically, will will leverage the capability of SASL to use LDAP as an authentication back-end. In our case, Active Directory will play a role of such authentication back-end.
  • Books – UNIX Systems Programming (BSD) – BitsInTheWind.com – ISBN 10: 0-937175-23-4 / ISBN 13: 9780937175231  O'Reilly & Associates January 1989 The following are made available for your personal, non-commercial use only. You may cite this document as a bibliographic reference in any works that you are writing. Any commercial use of this document, including printing and distribution to groups of people (such as a classroom) is prohibited without my prior written permission.
  • osquery – With osquery, you can use SQL to query low-level operating system information. Under the hood, instead of querying static tables, these queries dynamically execute high-performance native code. The results of the SQL query are transparently returned to you quickly and easily.
  • Boxupp – GUI tool to manage Puppet & Vagrant based project environments | Paxcel – Boxupp makes it easy for integrated management of development stacks over Vagrant and Puppet. Initially built over these two softwares, we plan to add support for more providers and provisioners * Integrated management environment for Vagrant and Puppet * Intelligence at its core * Simple Web GUI * Easy provisioning * Inbuilt console and editors * Start right from level zero ! * Share your configurations with team members.

Bookmarks for 3 nov 2014 through 5 nov 2014

These are my links for 3 nov 2014 through 5 nov 2014:

  • Policy Daemon – Policyd is an anti-spam plugin for Postfix (written in C) that does Greylisting, Sender-(envelope, SASL or host / ip)-based throttling (on messages and/or volume per defined time unit), Recipient rate limiting, Spamtrap monitoring / blacklisting, HELO auto blacklisting and HELO randomization preventation.
  • DevStack – an OpenStack Community Production — documentation – A documented shell script to build complete OpenStack development environments. An OpenStack program maintained by the developer community. Setup a fresh supported Linux installation. Clone devstack from git.openstack.org. git clone https://git.openstack.org/openstack-dev/devstack Deploy your OpenStack Cloud cd devstack && ./stack.sh
  • vim modeline – Tips and Tricks – ph3nix.Net – Generally you either love or hate Vim.  It boils down to a matter of personal preference.  However love or hate you have to admit it is extremely powerful for a command line, text only file editor.  For those who love it – or just have to make use of it on a regular basis, the Vim modeline feature is a very useful and powerful way of customizing the visual and editing preferences as well as several other options on a file by file basis.
  • Development Foo – using vim and sshfs to propel development | New Goliath –
  • Front-end engineering and so on: OpenSSL: Convert private key to PEM format for AWS ELB – You might get message "Error: Invalid Private Key" while configuring SSL on Elastic Load Balancer on Amazon Web Services (AWS). It means your private key isn't in PEM format. No worries, it easy to fix.

Bookmarks for 28 ott 2014 through 29 ott 2014

These are my links for 28 ott 2014 through 29 ott 2014:

Bookmarks for 22 ott 2014 through 24 ott 2014

These are my links for 22 ott 2014 through 24 ott 2014:

  • Phamm – PHP LDAP Virtual Hosting Manager – Postfix MTA Fronted – Phamm is a front-end written in PHP to manage virtual services using a OpenLDAP directory back-end. A couple of scripts and tools included help you to set up services.
  • WP-Cli Tutorial – How to Use WP-Cli with Your WordPress Site – WP-Cli is a command line interface which allows the users to manage their WordPress web sites from the command prompt. Upgrades can be performed, backups can be generated, new posts can be published and most of the regular admin actions can be performed with a set of commands. In this tutorial we will explain how to use the WP command line interface in order to complete regular administrative tasks like upgrades, database backup creation, plugins and themes installations and removals, publishing and deleting posts, changing site's URL settings and getting help on chosen commands. Note that WP-Cli requires an SSH access.
  • WordShell – WordPress from the command-line | WordPress from the CLIWordShell – WordPress from the command-line – WordPress from the command-line (Linux, Mac, Windows, BSD, Solaris, etc.) Don't log in to the dashboard on 20 sites one after the other; just type one command. Automate everything and use many bonus tools (e.g. automated backups, maintaining custom patches and version control). This is the time-and-money saver that WP admins have been waiting for.

Bookmarks for 25 set 2014 from 12:03 to 17:40

These are my links for 25 set 2014 from 12:03 to 17:40:

  • sebsauvage/rss-bridge – The RSS feed for websites missing it
  • debsecan – The debsecan program evaluates the security status of a host running the Debian operation system. It reports missing security updates and known vulnerabilities in the programs which are installed on the host. debsecan accesses the dpkg database and obtains a list of installed packages and their versions. This list is then evaluated against a feed of vulnerability information which ultimately comes from a database maintained by Debian's Testing Security Team . Various output formats are supported, including incremental reporting via email. Beginning with version 0.2, debsecan includes a script called debsecan-create-cron, which allows you to create a cron job which periodically sends you mail (once per day) when the security status of the system changes.
  • Barriers, Caches, Filesystems | monolight – With the recent proliferation of ext4 as the new “default” Linux filesystem there’s been much talk of write barrier support. The flurry of post-2.6.18 barrier related development in most storage subsystems has left some novice users and administrators perplexed. I hope I can clear it up a bit with this primer/refresher.
  • SMTP, testing via Telnet – FreeBSDwiki – When troubleshooting problems with SMTP service – your own, or others – it is frequently very helpful to be able to "speak" to the SMTP server directly, rather than going through a mail client which won't necessarily tell you exactly what the SMTP server is saying. You can easily do this with the telnet client. Note that many ISPs do not allow outbound connections on port 25 to any SMTP server but their own – if you get timeouts when trying to connect to port 25, you should try port 587, which is the standard ESMTP port. (Port 587 connections normally require SMTP AUTH, which is covered below.)

Bookmarks for 4 set 2014 through 5 set 2014

These are my links for 4 set 2014 through 5 set 2014:

  • tmux-plugins/tmux-resurrect – Restore tmux environment after a system restart. Tmux is great, except when you have to restart the computer. You lose all the running programs, working directories, pane layouts etc. There are helpful management tools out there, but they require initial configuration and continuous updates as your workflow evolves or you start new projects. tmux-resurrect saves all the little details from your tmux environment so it can be completely restored after a system restart (or when you feel like it). No configuration is required. You should feel like you never quit tmux. http://undeadly.org/cgi?action=article&sid=20140904174329
  • box/Anemometer – This is the Box Anemometer, the MySQL Slow Query Monitor. This tool is used to analyze slow query logs collected from MySQL instances to identify problematic queries.
  • SpamExperts/pyzor – Pyzor is a Python implementation of a spam-blocking networked system that use spam signatures to identify them.

Bookmarks for 28 ago 2014 from 12:10 to 13:11

These are my links for 28 ago 2014 from 12:10 to 13:11:

  • CloudInit – Community Help Wiki – cloud-init is the Ubuntu package that handles early initialization of a cloud instance. It is installed in the Ubuntu Cloud Images and also in the official Ubuntu images available on EC2. Some of the things it configures are: setting a default locale setting hostname generate ssh private keys adding ssh keys to user's .ssh/authorized_keys so they can log in setting up ephemeral mount points cloud-init's behavior can be configured via user-data. User-data can be given by the user at instance launch time. This is done via the –user-data or –user-data-file argument to ec2-run-instances
  • Tsunami UDP Protocol – Tsunami UDP Protocol: A fast user-space file transfer protocol that uses TCP control and UDP data for transfer over very high speed long distance networks (≥ 1 Gbps and even 10 GE), designed to provide more throughput than possible with TCP over the same networks. The project is based on original Indiana University 2002 Tsunami source code, but has been significantly improved and extended. As such, large portions of the program today are courtesy by Aalto University Metsähovi Radio Observatory. Includes FTP-like client and server command line applications for normal file transfers. It has additionally been extended for high rate real-time data streaming in eVLBI radio astronomy and geodesy (VSIB, PCEVN DAQ). Licensed under the original IU open source license.
  • Obama for America on AWS – Infrastructure Architecture – Obama for America on AWS – Infrastructure Architecture
  • holman/spark – sparklines for your shell