{"id":550,"date":"2020-05-13T11:07:58","date_gmt":"2020-05-13T09:07:58","guid":{"rendered":"http:\/\/calculs.univ-cotedazur.fr\/?page_id=550"},"modified":"2026-03-25T13:33:06","modified_gmt":"2026-03-25T12:33:06","slug":"connection-and-working-environment","status":"publish","type":"page","link":"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&lang=en","title":{"rendered":"Connection and working environment"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_11 counter-hierarchy counter-decimal ez-toc-grey\">\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#How_to_connect_to_Azzurra\" title=\"How to connect to Azzurra\">How to connect to Azzurra<\/a><ul class=\"ez-toc-list-level-4\"><li class=\"ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#From_your_office_at_the_university,_on_the_wired_network\" title=\"From your office at the university, on the wired network\">From your office at the university, on the wired network<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#VPN\" title=\"VPN\">VPN<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#Via_another_server\" title=\"Via another server\">Via another server<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#Your_working_environment\" title=\"Your working environment\">Your working environment<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#Transfer_files_from_your_computer_or_a_server\" title=\"Transfer files from your computer or a server\">Transfer files from your computer or a server<\/a><ul class=\"ez-toc-list-level-4\"><li class=\"ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#Using_FileZilla\" title=\"Using FileZilla\">Using FileZilla<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=550&amp;lang=en#Using_rsync\" title=\"Using rsync\">Using rsync<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"How_to_connect_to_Azzurra\"><\/span>How to connect to Azzurra<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Your credentials are sent to you by e-mail. <\/p>\n\n\n\n<p><strong>From February 2023, password authentication is disabled. Only SSH keys are allowed.<\/strong> <\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\"><a href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=1675&amp;lang=en\" data-type=\"page\" data-id=\"1675\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>CLICK HERE FOR ANY QUESTION ABOUT SSH KEYS <\/strong><\/a><\/p>\n\n\n\n<p>You can connect from your office (provided that you send us your institutional IP address) or remotely via a VPN whose name is given in the e-mail including your credentials. <\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"From_your_office_at_the_university,_on_the_wired_network\"><\/span>From your office at the university, on the wired network<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>To connect, you must have an ssh client on your machine:<\/p>\n\n\n\n<ul><li>For Windows, you can use <a rel=\"noreferrer noopener\" aria-label=\"PuTTY  (s\u2019ouvre dans un nouvel onglet)\" href=\"http:\/\/www.chiark.greenend.org.uk\/~sgtatham\/putty\/download.html\" target=\"_blank\">PuTTY<\/a> and enter as hostname, the machine name you received by e-mail and port: 22 (SSH). Then, enter your Azzurra credentials in the new terminal.<\/li><li>For Linux and Unix-like (MacOS), you can use the native client provided with the OS and use the following command: <strong>ssh user_name@login-hpc.univ-cotedazur.fr<\/strong> (replace by the appropriate value, received by e-mail) <\/li><\/ul>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"VPN\"><\/span>VPN<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>To connect to Azzurra via VPN, you must use the Cisco Secure Client, that you can download on <a rel=\"noreferrer noopener\" href=\"https:\/\/open.unice.fr\/download\" target=\"_blank\">this link<\/a>. Your VPN credentials are your UniCA username followed by <strong>@hpc<\/strong> and your UniCA password. Example: john@hpc<\/p>\n\n\n\n<p>To connect to the VPN, enter in the Cisco Secure Client: <strong>open.unice.fr<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"517\" height=\"251\" src=\"https:\/\/calculs.univ-cotedazur.fr\/wp-content\/uploads\/2021\/01\/vpn1.png\" alt=\"\" class=\"wp-image-987\" srcset=\"https:\/\/calculs.univ-cotedazur.fr\/wp-content\/uploads\/2021\/01\/vpn1.png 517w, https:\/\/calculs.univ-cotedazur.fr\/wp-content\/uploads\/2021\/01\/vpn1-300x146.png 300w\" sizes=\"(max-width: 517px) 100vw, 517px\" \/><\/figure>\n\n\n\n<p>Then, in the \u00ab&nbsp;Username&nbsp;\u00bb field, type in your unice username followed by <strong>@hpc<\/strong> and in the Password field, type in your unice password:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"427\" height=\"280\" src=\"https:\/\/calculs.univ-cotedazur.fr\/wp-content\/uploads\/2021\/01\/vpn2.png\" alt=\"\" class=\"wp-image-984\" srcset=\"https:\/\/calculs.univ-cotedazur.fr\/wp-content\/uploads\/2021\/01\/vpn2.png 427w, https:\/\/calculs.univ-cotedazur.fr\/wp-content\/uploads\/2021\/01\/vpn2-300x197.png 300w\" sizes=\"(max-width: 427px) 100vw, 427px\" \/><\/figure>\n\n\n\n<p><strong>Important<\/strong>: use your UniCA credentials in order to connect to the VPN, not your Azzurra credentials. <\/p>\n\n\n\n<p>Once the VPN connection is established, open a terminal (if you use Linux or Mac) and enter:  <strong>ssh my_azzurra_login@login-hpc.univ-cotedazur.fr<\/strong> (replace by the appropriate value, received by e-mail).<\/p>\n\n\n\n<p>If you&rsquo;re under Windows, you can use <a rel=\"noreferrer noopener\" aria-label=\"PuTTY  (s\u2019ouvre dans un nouvel onglet)\" href=\"https:\/\/www.chiark.greenend.org.uk\/~sgtatham\/putty\/latest.html\" target=\"_blank\">PuTTY<\/a> and enter as hostname, the machine name you received by e-mail and port: 22 (SSH).  Then, enter your Azzurra credentials in the new terminal. <\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Via_another_server\"><\/span>Via another server<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Connecting to Azzurra is possible from clusters Nef and Licallo, as well as other Universit\u00e9 C\u00f4te d\u2019Azur servers (<a href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=17\" data-type=\"page\" data-id=\"17\">upon request<\/a>).<\/p>\n\n\n\n<p>It is necessary to use SSH agent forwarding to enable the connection to Azzurra from another server. You need to add the -A option when connecting to the first server. For example :<\/p>\n\n\n\n<pre class=\"wp-block-verse\">ssh -A username@my-server.univ-cotedazur.fr<\/pre>\n\n\n\n<p>Windows users can use <a rel=\"noreferrer noopener\" href=\"https:\/\/www.chiark.greenend.org.uk\/~sgtatham\/putty\/latest.html\" target=\"_blank\">PuTTY<\/a> and click SSH &gt; Auth &gt; Allow agent forwarding then save and open the session.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Your_working_environment\"><\/span>Your working environment<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The cluster is currently running on Rocky 9.5. The essential Linux commands can been seen <a rel=\"noreferrer noopener\" aria-label=\"by clicking here (s\u2019ouvre dans un nouvel onglet)\" href=\"https:\/\/centoshelp.org\/resources\/commands\/linux-system-commands\/\" target=\"_blank\">by clicking here<\/a>.<\/p>\n\n\n\n<p>Each user has, in addition to their folder in \/home, their own workspace, accessible in \/workspace\/$USER<\/p>\n\n\n\n<ul><li>\/<strong>home\/$USER<\/strong>: <strong>do not store your files in this directory.<\/strong>  <\/li><\/ul>\n\n\n\n<ul><li><strong>\/workspace\/$USER<\/strong>: this is where you should store your files, or in the shared workspace for your project (read below). <\/li><\/ul>\n\n\n\n<p>Users of the same group are also granted access to a shared directory into \/workspace\/group_name. To know which group(s) you belong to, use the <strong>groups<\/strong> command.<\/p>\n\n\n\n<p>There is no storage limit for the \/workspace folder. However, you are asked to store only the files that are useful for your computations. Files that are not used anymore must be transferred to your own storage systems.<\/p>\n\n\n\n<p><strong>Important:<\/strong> the center does not make any backup of your data. <\/p>\n\n\n\n<p>Two text editors are available on the cluster: <strong>nano <\/strong>and <strong>vim<\/strong>.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Transfer_files_from_your_computer_or_a_server\"><\/span>Transfer files from your computer or a server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Using_FileZilla\"><\/span>Using FileZilla<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>To transfer your files from your computer to Azzurra, you can use FileZilla: <a rel=\"noreferrer noopener\" aria-label=\"https:\/\/filezilla-project.org\/download.php?type=client (s\u2019ouvre dans un nouvel onglet)\" href=\"https:\/\/filezilla-project.org\/download.php?type=client\" target=\"_blank\">https:\/\/filezilla-project.org\/download.php?type=client<\/a><\/p>\n\n\n\n<p>Once FileZilla is installed, make sure you are connected to an authorized network (your office&rsquo;s or the dedicated VPN) and fill in the fields in FileZilla as follows:<\/p>\n\n\n\n<pre class=\"wp-block-verse\"><strong>Host<\/strong>: login-hpc.univ-cotedazur.fr\n<strong>Username<\/strong>:  your azzurra username\n<strong>Port<\/strong>: 22 <\/pre>\n\n\n\n<p>If you use Windows, you need to do the following in order to make your SSH key work with FileZilla:<\/p>\n\n\n\n<p>1\/ Follow this procedure to create a .ppk file: <a href=\"https:\/\/www.simplified.guide\/putty\/convert-ssh-key-to-ppk\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.simplified.guide\/putty\/convert-ssh-key-to-ppk<\/a><\/p>\n\n\n\n<p>2\/ Open FileZilla &gt; File &gt; Site manager &gt; Create new site (you can name it \u201cAzzurra\u201d) &gt; Pick SFTP as protocol, Host: login-hpc.univ-cotedazur.fr Port: 22, Authentication type: key file, User: your Azzurra username, Key file: the .ppk you created at step 1.<\/p>\n\n\n\n<p>Then you\u2019ll be able to connect by clicking on the arrow attached with the \u201cOpen site manager\u201d button (at the top left corner, under \u201cFile\u201d).<\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Using_rsync\"><\/span>Using rsync<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>rsync is a standard command line tool on Linux. In particular, it allows incremental synchronization, which is practical for transferring large data, and uses a protocol other than FTP \/ SFTP. <a href=\"https:\/\/linux.die.net\/man\/1\/rsync\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (s\u2019ouvre dans un nouvel onglet)\">See more information on this link.<\/a><\/p>\n\n\n\n<p>Here is an example of use. From your personal computer or a server, enter the following command: <\/p>\n\n\n\n<pre class=\"wp-block-verse\">rsync -a --progress my_local_directory\/ username@login-hpc.univ-cotedazur.fr:path_to_your_azzurra_directory\/<\/pre>\n\n\n\n<p id=\"tw-target-text\"><strong>Important<\/strong>: connection to Azzurra is only authorized from certain IP addresses. If the transfer request is refused, please <a href=\"https:\/\/calculs.univ-cotedazur.fr\/?page_id=463&amp;lang=en\" data-type=\"page\" data-id=\"463\">contact us<\/a> indicating the IP of the remote server to authorize (obtained with the ifconfig command on Mac\/Linux and ipconfig on Windows).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How to connect to Azzurra Your credentials are sent to you by e-mail. From February 2023, password authentication is disabled. Only SSH keys are allowed. CLICK HERE FOR ANY QUESTION ABOUT SSH KEYS You can connect from your office (provided &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":552,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/550"}],"collection":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=550"}],"version-history":[{"count":46,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/550\/revisions"}],"predecessor-version":[{"id":3322,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/550\/revisions\/3322"}],"up":[{"embeddable":true,"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=\/wp\/v2\/pages\/552"}],"wp:attachment":[{"href":"https:\/\/calculs.univ-cotedazur.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}