Pre-Requisite: Docker installed on both your machines Create the directory to store the configuration file. sudo mkdir -p /etc/systemd/system/docker.service.d Create a new file to store the daemon options. sudo nano /etc/systemd/system/docker.service.d/options.conf Now make it look like this and save the file when you’re done: [Service] ExecStart= ExecStart=/usr/bin/dockerd -H unix:// -H tcp://0.0.0.0:2375 Now, reload the systemd […]
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This list of Linux Networking commands and scripts will receive ongoing updates, similar to the other lists on this blog… arpwatch – Ethernet Activity Monitor. bmon – bandwidth monitor and rate estimator. bwm-ng – live network bandwidth monitor. curl – transferring data with URLs. (or try httpie) darkstat – captures network traffic, usage statistics. dhclient – Dynamic Host Configuration Protocol Client dig – query DNS servers for information. dstat – replacement for vmstat, iostat, […]
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By Franck Pachot Thanks Franck, I noted it down as is a really great article. You probably know about ‘nproc’ limits in Linux which are set in /etc/limits.conf and checked with ‘ulimit -u’. But do you know how to handle the monitoring and be alerted when you’re close the fixed limit? Nproc and ps Nproc […]
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This blog is at the request of some Ubuntu users and describes how to restrict users access to applications and/or system files with rbash. rbash is a “restricted shell” and can be helpful in restricting users. This can be used, for example, to allow limited ssh access in order for a user to perform specific […]
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Note to me about configuring postfix SSL: postfix smtp ssl certificate csr installation guide Thanks Scott! https://scottlinux.com/2014/06/05/check-for-smtp-tls-from-command-line-with-openssl/ Here is a quick way to check if a mail server supports SMTP-TLS! Type the following against a mail server to test: $ openssl s_client -connect mail.example.com:25 -starttls smtp Then you can type the regular SMTP commands […]
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by Vivek Gite on November 14, 2006 last updated September 3, 2007 Intrusions can take place from both authorized (insiders) and unauthorized (outsiders) users. My personal experience shows that unhappy user can damage the system, especially when they have a shell access. Some users are little smart and removes history file (such as ~/.bash_history) but […]
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Commands Getting Started git init or git clone url Configuration git config –global color.ui true git config –global push.default current git config –global core.editor vim git config –global user.name “John Doe” git config –global user.email foo@citrix.com git config –global diff.tool meld Working with Local Branch Branching # See the list of all local branches git […]
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For those of you who didn’t know, Ntopng is a relatively useful tool if you are looking to monitor different network protocols on your servers. It provides a bunch of tools for monitoring various protocols, traffic variants, and yes, bandwidth across multiple time frames. ntopng is based on libpcap and it has been written in […]
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SSL certificate is a must for nowadays e-commerce site whereas newly emerged web server like Nginx has gained so much attention due to its performance when dealing with heavy traffic to the web site. Why do those people choose Nginx? Nginx’s unique architecture makes it easy to handle large number of concurrent connections at one […]
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For some weird reason, although the steps are simple, i cannot easily find a single page which gives you the exact steps (only 4) to convert a pfx file to a PEM and a KEY file below are the steps to convert, it will generate an aa_s.key and a aa.pem which you can then use […]
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