22 lines
54 KiB
HTML
22 lines
54 KiB
HTML
<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="Documentation for 3Engines services and products"><meta name=author content=3Engines><link rel=canonical href=https://docs.3Engines.com/kubernetes/How-To-Create-API-Server-LoadBalancer-for-Kubernetes-Cluster-On-3Engines-Cloud-OpenStack-Magnum.html.html><link rel=icon href=../assets/favicon.ico><meta name=generator content="mkdocs-1.6.1, mkdocs-material-9.6.14"><title>How To Create API Server LoadBalancer for Kubernetes Cluster on 3Engines Cloud OpenStack Magnum🔗 - 3Engines Documentation</title><link rel=stylesheet href=../assets/stylesheets/main.342714a4.min.css><link rel=stylesheet href=../assets/stylesheets/palette.06af60db.min.css><script src=https://unpkg.com/iframe-worker/shim></script><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><link rel=stylesheet href=../stylesheets/extra.css><script>__md_scope=new URL("..",location),__md_hash=e=>[...e].reduce(((e,_)=>(e<<5)-e+_.charCodeAt(0)),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script> <link href="../assets/stylesheets/glightbox.min.css" rel="stylesheet"/><style>
|
||
html.glightbox-open { overflow: initial; height: 100%; }
|
||
.gslide-title { margin-top: 0px; user-select: text; }
|
||
.gslide-desc { color: #666; user-select: text; }
|
||
.gslide-image img { background: white; }
|
||
.gscrollbar-fixer { padding-right: 15px; }
|
||
.gdesc-inner { font-size: 0.75rem; }
|
||
body[data-md-color-scheme="slate"] .gdesc-inner { background: var(--md-default-bg-color);}
|
||
body[data-md-color-scheme="slate"] .gslide-title { color: var(--md-default-fg-color);}
|
||
body[data-md-color-scheme="slate"] .gslide-desc { color: var(--md-default-fg-color);}</style> <script src="../assets/javascripts/glightbox.min.js"></script></head> <body dir=ltr data-md-color-scheme=default data-md-color-primary=blue-grey data-md-color-accent=indigo> <input class=md-toggle data-md-toggle=drawer type=checkbox id=__drawer autocomplete=off> <input class=md-toggle data-md-toggle=search type=checkbox id=__search autocomplete=off> <label class=md-overlay for=__drawer></label> <div data-md-component=skip> <a href=#how-to-create-api-server-loadbalancer-for-kubernetes-cluster-on-3engines-cloud-openstack-magnum class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <header class=md-header data-md-component=header> <nav class="md-header__inner md-grid" aria-label=Header> <a href=../index.html title="3Engines Documentation" class="md-header__button md-logo" aria-label="3Engines Documentation" data-md-component=logo> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3 3 3 0 0 0 3 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54"/></svg> </a> <label class="md-header__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3zm0 5h18v2H3zm0 5h18v2H3z"/></svg> </label> <div class=md-header__title data-md-component=header-title> <div class=md-header__ellipsis> <div class=md-header__topic> <span class=md-ellipsis> 3Engines Documentation </span> </div> <div class=md-header__topic data-md-component=header-topic> <span class=md-ellipsis> How To Create API Server LoadBalancer for Kubernetes Cluster on 3Engines Cloud OpenStack Magnum🔗 </span> </div> </div> </div> <form class=md-header__option data-md-component=palette> <input class=md-option data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme=default data-md-color-primary=blue-grey data-md-color-accent=indigo aria-label="Switch to dark mode" type=radio name=__palette id=__palette_0> <label class="md-header__button md-icon" title="Switch to dark mode" for=__palette_1 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a4 4 0 0 0-4 4 4 4 0 0 0 4 4 4 4 0 0 0 4-4 4 4 0 0 0-4-4m0 10a6 6 0 0 1-6-6 6 6 0 0 1 6-6 6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-scheme: dark)" data-md-color-scheme=slate data-md-color-primary=indigo data-md-color-accent=indigo aria-label="Switch to light mode" type=radio name=__palette id=__palette_1> <label class="md-header__button md-icon" title="Switch to light mode" for=__palette_0 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 18c-.89 0-1.74-.2-2.5-.55C11.56 16.5 13 14.42 13 12s-1.44-4.5-3.5-5.45C10.26 6.2 11.11 6 12 6a6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12z"/></svg> </label> </form> <script>var palette=__md_get("__palette");if(palette&&palette.color){if("(prefers-color-scheme)"===palette.color.media){var media=matchMedia("(prefers-color-scheme: light)"),input=document.querySelector(media.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: dark)']");palette.color.media=input.getAttribute("data-md-color-media"),palette.color.scheme=input.getAttribute("data-md-color-scheme"),palette.color.primary=input.getAttribute("data-md-color-primary"),palette.color.accent=input.getAttribute("data-md-color-accent")}for(var[key,value]of Object.entries(palette.color))document.body.setAttribute("data-md-color-"+key,value)}</script> <label class="md-header__button md-icon" for=__search> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.52 6.52 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5"/></svg> </label> <div class=md-search data-md-component=search role=dialog> <label class=md-search__overlay for=__search></label> <div class=md-search__inner role=search> <form class=md-search__form name=search> <input type=text class=md-search__input name=query aria-label=Search placeholder=Search autocapitalize=off autocorrect=off autocomplete=off spellcheck=false data-md-component=search-query required> <label class="md-search__icon md-icon" for=__search> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.52 6.52 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5"/></svg> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11z"/></svg> </label> <nav class=md-search__options aria-label=Search> <a href=javascript:void(0) class="md-search__icon md-icon" title=Share aria-label=Share data-clipboard data-clipboard-text data-md-component=search-share tabindex=-1> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M18 16.08c-.76 0-1.44.3-1.96.77L8.91 12.7c.05-.23.09-.46.09-.7s-.04-.47-.09-.7l7.05-4.11c.54.5 1.25.81 2.04.81a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3c0 .24.04.47.09.7L8.04 9.81C7.5 9.31 6.79 9 6 9a3 3 0 0 0-3 3 3 3 0 0 0 3 3c.79 0 1.5-.31 2.04-.81l7.12 4.15c-.05.21-.08.43-.08.66 0 1.61 1.31 2.91 2.92 2.91s2.92-1.3 2.92-2.91A2.92 2.92 0 0 0 18 16.08"/></svg> </a> <button type=reset class="md-search__icon md-icon" title=Clear aria-label=Clear tabindex=-1> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z"/></svg> </button> </nav> <div class=md-search__suggest data-md-component=search-suggest></div> </form> <div class=md-search__output> <div class=md-search__scrollwrap tabindex=0 data-md-scrollfix> <div class=md-search-result data-md-component=search-result> <div class=md-search-result__meta> Initializing search </div> <ol class=md-search-result__list role=presentation></ol> </div> </div> </div> </div> </div> </nav> </header> <div class=md-container data-md-component=container> <nav class=md-tabs aria-label=Tabs data-md-component=tabs> <div class=md-grid> <ul class=md-tabs__list> <li class=md-tabs__item> <a href=../index.html class=md-tabs__link> Home </a> </li> <li class=md-tabs__item> <a href=../cloud/cloud.html.html class=md-tabs__link> Cloud </a> </li> <li class=md-tabs__item> <a href=../datavolume/datavolume.html.html class=md-tabs__link> Data Volume </a> </li> <li class=md-tabs__item> <a href=../networking/networking.html.html class=md-tabs__link> Networking </a> </li> <li class=md-tabs__item> <a href=../s3/s3.html.html class=md-tabs__link> S3 </a> </li> <li class=md-tabs__item> <a href=../windows/windows.html.html class=md-tabs__link> Windows </a> </li> </ul> </div> </nav> <main class=md-main data-md-component=main> <div class="md-main__inner md-grid"> <div class="md-sidebar md-sidebar--primary" data-md-component=sidebar data-md-type=navigation> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--primary md-nav--lifted" aria-label=Navigation data-md-level=0> <label class=md-nav__title for=__drawer> <a href=../index.html title="3Engines Documentation" class="md-nav__button md-logo" aria-label="3Engines Documentation" data-md-component=logo> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3 3 3 0 0 0 3 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54"/></svg> </a> 3Engines Documentation </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../index.html class=md-nav__link> <span class=md-ellipsis> Home </span> </a> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_2> <label class=md-nav__link for=__nav_2 id=__nav_2_label tabindex=0> <span class=md-ellipsis> Cloud </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_2_label aria-expanded=false> <label class=md-nav__title for=__nav_2> <span class="md-nav__icon md-icon"></span> Cloud </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../cloud/cloud.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Dashboard-Overview-Project-Quotas-And-Flavors-Limits-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Dashboard Overview – Project Quotas And Flavors Limits on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-access-the-VM-from-OpenStack-console-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to access the VM from OpenStack console on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-clone-existing-and-configured-VMs-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to clone existing and configured VMs on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-fix-unresponsive-console-issue-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to fix unresponsive console issue on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-generate-ec2-credentials-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to generate and manage EC2 credentials on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-generate-or-use-Application-Credentials-via-CLI-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to generate or use Application Credentials via CLI on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-use-GUI-in-Linux-VM-on-3Engines-Cloud-and-access-it-from-local-Linux-computer.html.html class=md-nav__link> <span class=md-ellipsis> How to Use GUI in Linux VM on 3Engines Cloud and access it From Local Linux Computer </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-To-Create-a-New-Linux-VM-With-NVIDIA-Virtual-GPU-in-the-OpenStack-Dashboard-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How To Create a New Linux VM With NVIDIA Virtual GPU in the OpenStack Dashboard Horizon on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-use-Docker-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to install and use Docker on Ubuntu 24.04 </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-use-Security-Groups-in-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to use Security Groups in Horizon on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-key-pair-in-OpenStack-Dashboard-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create key pair in OpenStack Dashboard on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-new-Linux-VM-in-OpenStack-Dashboard-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create new Linux VM in OpenStack Dashboard Horizon on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-install-Python-virtualenv-or-virtualenvwrapper-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to install Python virtualenv or virtualenvwrapper on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-start-a-VM-from-a-snapshot-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to start a VM from a snapshot on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Status-Power-State-and-dependences-in-billing-of-instances-VMs-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Status Power State and dependencies in billing of instance VMs on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-upload-your-custom-image-using-OpenStack-CLI-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to upload your custom image using OpenStack CLI on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/VM-created-with-option-Create-New-Volume-No-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> VM created with option Create New Volume No on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/VM-created-with-option-Create-New-Volume-Yes-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> VM created with option Create New Volume Yes on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/What-is-an-OpenStack-domain-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> What is an OpenStack domain on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/What-is-an-OpenStack-project-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> What is an OpenStack project on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-a-Linux-VM-and-access-it-from-Windows-desktop-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a Linux VM and access it from Windows desktop on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-a-Linux-VM-and-access-it-from-Linux-command-line-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a Linux VM and access it from Linux command line on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/DNS-as-a-Service-on-3Engines-Cloud-Hosting.html.html class=md-nav__link> <span class=md-ellipsis> DNS as a Service on 3Engines Cloud Hosting </span> </a> </li> <li class=md-nav__item> <a href=../cloud/What-Image-Formats-are-available-in-OpenStack-3Engines-Cloud-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> What Image Formats are Available in OpenStack 3Engines Cloud cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-upload-custom-image-to-3Engines-Cloud-cloud-using-OpenStack-Horizon-dashboard.html.html class=md-nav__link> <span class=md-ellipsis> How to upload custom image to 3Engines Cloud cloud using OpenStack Horizon dashboard </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-Windows-VM-on-OpenStack-Horizon-and-access-it-via-web-console-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create Windows VM on OpenStack Horizon and access it via web console on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-transfer-volumes-between-domains-and-projects-using-Horizon-dashboard-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to transfer volumes between domains and projects using Horizon dashboard on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Spot-instances-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Spot instances on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-instance-snapshot-using-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create instance snapshot using Horizon on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-start-a-VM-from-instance-snapshot-using-Horizon-dashboard-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to start a VM from instance snapshot using Horizon dashboard on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-a-VM-using-the-OpenStack-CLI-client-on-3Engines-Cloud-cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a VM using the OpenStack CLI client on 3Engines Cloud cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/OpenStack-user-roles-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> OpenStack User Roles on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Resizing-a-virtual-machine-using-OpenStack-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Resizing a virtual machine using OpenStack Horizon on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Block-storage-and-object-storage-performance-limits-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Block storage and object storage performance limits on 3Engines Cloud </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_3> <label class=md-nav__link for=__nav_3 id=__nav_3_label tabindex=0> <span class=md-ellipsis> Data Volume </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_3_label aria-expanded=false> <label class=md-nav__title for=__nav_3> <span class="md-nav__icon md-icon"></span> Data Volume </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../datavolume/datavolume.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-attach-a-volume-to-VM-less-than-2TB-on-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to attach a volume to VM less than 2TB on Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-attach-a-volume-to-VM-more-than-2TB-on-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to attach a volume to VM more than 2TB on Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/Ephemeral-vs-Persistent-storage-option-Create-New-Volume-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Ephemeral vs Persistent storage option Create New Volume on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-export-a-volume-over-NFS-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to export a volume over NFS on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-export-a-volume-over-NFS-outside-of-a-project-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to export a volume over NFS outside of a project on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-extend-the-volume-in-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to extend the volume in Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-mount-object-storage-in-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to mount object storage in Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-move-data-volume-between-two-VMs-using-OpenStack-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to move data volume between two VMs using OpenStack Horizon on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-many-objects-can-I-put-into-Object-Storage-container-bucket-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How many objects can I put into Object Storage container bucket on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-create-volume-Snapshot-and-attach-as-Volume-on-Linux-or-Windows-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create volume Snapshot and attach as Volume on Linux or Windows on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/Volume-snapshot-inheritance-and-its-consequences-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Volume snapshot inheritance and its consequences on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-To-Create-Backup-Of-Your-Volume-From-Windows-Machine-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Create Backup of Your Volume From Windows Machine on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-To-Attach-Volume-To-Windows-VM-On-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How To Attach Volume To Windows VM On 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-create-or-delete-volume-snapshot-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create or delete volume snapshot on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/How-to-restore-volume-from-snapshot-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to restore volume from snapshot on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../datavolume/Bootable-versus-non-bootable-volumes-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Bootable versus non-bootable volumes on 3Engines Cloud </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_4> <label class=md-nav__link for=__nav_4 id=__nav_4_label tabindex=0> <span class=md-ellipsis> Networking </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_4_label aria-expanded=false> <label class=md-nav__title for=__nav_4> <span class="md-nav__icon md-icon"></span> Networking </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../networking/networking.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-can-I-access-my-VMs-using-names-instead-of-IP-addresses-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How can I access my VMs using names instead of IP addresses on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-to-Add-or-Remove-Floating-IPs-to-your-VM-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Add or Remove Floating IP’s to your VM on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/Cannot-access-VM-with-SSH-or-PING-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Cannot access VM with SSH or PING on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/Cannot-ping-VM-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Cannot ping VM on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-to-connect-to-your-virtual-machine-via-SSH-in-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to connect to your virtual machine via SSH in Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-to-create-a-network-with-router-in-Horizon-Dashboard-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a network with router in Horizon Dashboard on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-can-I-open-new-ports-port-80-for-http-for-my-service-or-instance-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How can I open new ports for http for my service or instance on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/Generating-a-SSH-keypair-in-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Generating an SSH keypair in Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-to-add-SSH-key-from-Horizon-web-console-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to add SSH key from Horizon web console on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-is-my-VM-visible-in-the-internet-with-no-Floating-IP-attached-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How is my VM visible in the internet with no Floating IP attached on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-to-run-and-configure-Firewall-as-a-service-and-VPN-as-a-service-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to run and configure Firewall as a service and VPN as a service on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../networking/How-to-Import-SSH-Public-Key-to-OpenStack-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to import SSH public key to OpenStack Horizon on 3Engines Cloud </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_5> <label class=md-nav__link for=__nav_5 id=__nav_5_label tabindex=0> <span class=md-ellipsis> S3 </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_5_label aria-expanded=false> <label class=md-nav__title for=__nav_5> <span class="md-nav__icon md-icon"></span> S3 </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../s3/s3.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-delete-large-S3-bucket-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Delete Large S3 Bucket on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-mount-object-storage-container-as-a-file-system-in-Linux-using-s3fs-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Mount Object Storage Container as a File System in Linux Using s3fs on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/Bucket-sharing-using-s3-bucket-policy-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Bucket sharing using s3 bucket policy on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-use-Object-Storage-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to use Object Storage on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-access-private-object-storage-using-S3cmd-or-boto3-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to access private object storage using S3cmd or boto3 on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-To-Install-boto3-In-Windows-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Install Boto3 in Windows on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/Server-Side-Encryption-with-Customer-Managed-Keys-SSE-C-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Server-Side Encryption with Customer-Managed Keys (SSE-C) on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-mount-object-storage-container-from-3Engines-Cloud-as-file-system-on-local-Windows-computer.html.html class=md-nav__link> <span class=md-ellipsis> How to mount object storage container from 3Engines Cloud as file system on local Windows computer </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-install-s3cmd-on-Linux-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to install s3cmd on Linux on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-access-object-storage-from-3Engines-Cloud-using-boto3.html.html class=md-nav__link> <span class=md-ellipsis> How to access object storage from 3Engines Cloud using boto3 </span> </a> </li> <li class=md-nav__item> <a href=../s3/How-to-access-object-storage-from-3Engines-Cloud-using-s3cmd.html.html class=md-nav__link> <span class=md-ellipsis> How to access object storage from 3Engines Cloud using s3cmd </span> </a> </li> <li class=md-nav__item> <a href=../s3/Configuration-files-for-s3cmd-command-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Configuration files for s3cmd command on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../s3/S3-bucket-object-versioning-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> S3 bucket object versioning on 3Engines Cloud </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_6> <label class=md-nav__link for=__nav_6 id=__nav_6_label tabindex=0> <span class=md-ellipsis> Windows </span> <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_6_label aria-expanded=false> <label class=md-nav__title for=__nav_6> <span class="md-nav__icon md-icon"></span> Windows </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../windows/windows.html.html class=md-nav__link> <span class=md-ellipsis> Overview </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-to-access-a-VM-from-Windows-PuTTY-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to access a VM from Windows PuTTY on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/Connecting-to-a-Windows-VM-via-RDP-through-a-Linux-bastion-host-port-forwarding-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Connecting to a Windows VM via RDP through a Linux bastion host port forwarding on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-to-connect-to-a-virtual-machine-via-SSH-from-Windows-10-Command-Prompt-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to connect to a virtual machine via SSH from Windows 10 Command Prompt on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-To-Create-SSH-Key-Pair-In-Windows-On-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Create SSH Key Pair in Windows 10 On 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../windows/Can-I-change-my-password-through-RDP-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Can I change my password through RDP on 3Engines Cloud? </span> </a> </li> <li class=md-nav__item> <a href=../windows/How-To-Create-SSH-Key-Pair-In-Windows-11-On-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to Create SSH Key Pair in Windows 11 On 3Engines Cloud </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=sidebar data-md-type=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="On this page"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> On this page </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#what-we-are-going-to-do class=md-nav__link> <span class=md-ellipsis> What We Are Going To Do🔗 </span> </a> </li> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> <span class=md-ellipsis> Prerequisites🔗 </span> </a> </li> <li class=md-nav__item> <a href=#how-to-enable-or-disable-load-balancer-for-master-nodes class=md-nav__link> <span class=md-ellipsis> How To Enable or Disable Load Balancer for Master Nodes🔗 </span> </a> </li> <li class=md-nav__item> <a href=#one-master-node-no-load-balancer-and-the-problem-it-all-creates class=md-nav__link> <span class=md-ellipsis> One Master Node, No Load Balancer and the Problem It All Creates🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-1-create-a-cluster-with-one-master-node-and-no-load-balancer class=md-nav__link> <span class=md-ellipsis> Step 1 Create a Cluster With One Master Node and No Load Balancer🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-2-create-floating-ip-for-master-node class=md-nav__link> <span class=md-ellipsis> Step 2 Create Floating IP for Master Node🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-3-create-config-file-for-kubernetes-cluster class=md-nav__link> <span class=md-ellipsis> Step 3 Create config File for Kubernetes Cluster🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-4-swap-existing-floating-ip-address-for-the-network-address class=md-nav__link> <span class=md-ellipsis> Step 4 Swap Existing Floating IP Address for the Network Address🔗 </span> </a> </li> <li class=md-nav__item> <a href=#step-4-add-parameter-insecure-skip-tls-verifytrue-to-make-kubectl-work class=md-nav__link> <span class=md-ellipsis> Step 4 Add Parameter –insecure-skip-tls-verify=true to Make kubectl Work🔗 </span> </a> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <article class="md-content__inner md-typeset"> <h1 id=how-to-create-api-server-loadbalancer-for-kubernetes-cluster-on-3engines-cloud-openstack-magnum>How To Create API Server LoadBalancer for Kubernetes Cluster on 3Engines Cloud OpenStack Magnum<a href=#how-to-create-api-server-loadbalancer-for-kubernetes-cluster-on-brand-name-openstack-magnum title="Permalink to this headline">🔗</a><a class=headerlink href=#how-to-create-api-server-loadbalancer-for-kubernetes-cluster-on-3engines-cloud-openstack-magnum title="Permanent link">¶</a></h1> <p>Load balancer can be understood both as</p> <blockquote> <ul> <li>an external IP address through which the network / Internet traffic is coming into the Kubernetes cluster as well as</li> <li>the piece of software that decides to which of the master nodes to send the incoming traffic.</li> </ul> </blockquote> <p>There is an option to create load balancer while creating the Kubernetes cluster but you can also create it without. This article will show you how to access the cluster even if you did not specify load balancer at the creation time.</p> <h2 id=what-we-are-going-to-do>What We Are Going To Do<a href=#what-we-are-going-to-do title="Permalink to this headline">🔗</a><a class=headerlink href=#what-we-are-going-to-do title="Permanent link">¶</a></h2> <blockquote> <ul> <li>Create a cluster called NoLoadBalancer with one master node and no load balancer</li> <li>Assign floating IP address to its master node</li> <li>Create <em>config</em> file to access the cluster</li> <li>In that <em>config</em> file, swap local server address with the actual floating IP of the master node</li> <li>Use parameter <strong>–insecure-skip-tls-verify=true</strong> to override server security</li> <li>Verify that <strong>kubectl</strong> is working normally, which means that you have full access to the Kubernetes cluster</li> </ul> </blockquote> <h2 id=prerequisites>Prerequisites<a href=#prerequisites title="Permalink to this headline">🔗</a><a class=headerlink href=#prerequisites title="Permanent link">¶</a></h2> <p>No. 1 <strong>Hosting</strong></p> <p>You need a 3Engines Cloud hosting account with Horizon interface <a href=https://horizon.3Engines.com>https://horizon.3Engines.com</a>.</p> <p>No. 2 <strong>Installation of the openstack command</strong></p> <p>To activate <strong>kubectl</strong> command, the openstack command from CLI OpenStack Interface must be operational. The first part of article <a href=How-To-Use-Command-Line-Interface-for-Kubernetes-Clusters-On-3Engines-Cloud-OpenStack-Magnum.html.html>How To Use Command Line Interface for Kubernetes Clusters On 3Engines Cloud OpenStack Magnum</a> shows how to install it.</p> <p>No. 3 <strong>How to create Kubernetes cluster using Horizon commands</strong></p> <p>The article <a href=How-to-Create-a-Kubernetes-Cluster-Using-3Engines-Cloud-OpenStack-Magnum.html.html>How to Create a Kubernetes Cluster Using 3Engines Cloud OpenStack Magnum</a> shows creation of clusters with Horizon visual interface. (In this article, you shall use it to create an exemplar cluster called <em>NoLoadBalancer</em>.)</p> <p>No. 4 <strong>Connect to the Kubernetes Cluster in Order to Use kubectl</strong></p> <p>Article <a href=How-To-Access-Kubernetes-Cluster-Post-Deployment-Using-Kubectl-On-3Engines-Cloud-OpenStack-Magnum.html.html>How To Access Kubernetes Cluster Post Deployment Using Kubectl On 3Engines Cloud OpenStack Magnum</a> will show you how to connect your local machine to the existing Kubernetes cluster.</p> <h2 id=how-to-enable-or-disable-load-balancer-for-master-nodes>How To Enable or Disable Load Balancer for Master Nodes<a href=#how-to-enable-or-disable-load-balancer-for-master-nodes title="Permalink to this headline">🔗</a><a class=headerlink href=#how-to-enable-or-disable-load-balancer-for-master-nodes title="Permanent link">¶</a></h2> <p>A default state for the Kubernetes cluster in 3Engines Cloud OpenStack Magnum hosting is to have no load balancer set up in advance. You can decide to have a load balancer created together with the basic Kubernetes cluster by checking on option <strong>Enable Load Balancer for Master Nodes</strong> in window <strong>Network</strong> when creating a cluster through Horizon interface. (See <strong>Prerequisite No. 3</strong> for the complete procedure.)</p> <p>The check box to enable load balancer for master nodes has two completely different meanings when checked and not checked.</p> <p><strong>Checked state</strong></p> <p><a class=glightbox href=../_images/enable_load_balancer_checked.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=enable_load_balancer_checked.png src=../_images/enable_load_balancer_checked.png></a></p> <p>If <strong>checked</strong>, the load balancer for master nodes will be created. If you specified two or more master nodes in previous screens, then this field <strong>must</strong> be checked.</p> <p>Regardless of the number of master nodes you have specified, checking this field on yields higher chances of successfully creating the Kubernetes cluster.</p> <p><strong>Non-checked state</strong></p> <p><a class=glightbox href=../_images/enable_load_balancer_unchecked.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=enable_load_balancer_unchecked.png src=../_images/enable_load_balancer_unchecked.png></a></p> <p>If you accept the default state of <strong>unchecked</strong>, no load balancer will be created. However, without any load balancer “in front” of the cluster, the cluster API is being exposed only within the Kubernetes network. You save on the existence of the load balancer but the direct connection from local machine to the cluster is lost.</p> <h2 id=one-master-node-no-load-balancer-and-the-problem-it-all-creates>One Master Node, No Load Balancer and the Problem It All Creates<a href=#one-master-node-no-load-balancer-and-the-problem-it-all-creates title="Permalink to this headline">🔗</a><a class=headerlink href=#one-master-node-no-load-balancer-and-the-problem-it-all-creates title="Permanent link">¶</a></h2> <p>To show exactly what the problem is, use</p> <blockquote> <ul> <li>Prerequisite No. 2 to install openstack client for the local machine, so that you can use the <strong>openstack</strong> command.</li> <li>Then use Prerequisite No. 4 to connect to the OpenStack cloud and start using <strong>openstack</strong> command from the local terminal.</li> </ul> </blockquote> <p>Then you can try a very usual command such as</p> <div class=highlight><pre><span></span><code><span id=__span-0-1><a id=__codelineno-0-1 name=__codelineno-0-1 href=#__codelineno-0-1></a>kubectl get nodes
|
||
</span></code></pre></div> <p>but it will not work. If there were load balancer “in front of the cluster”, it would work, but here there isn’t so it won’t. The rest of this article will show you how to still make it work, using the fact that the master node of the cluster has its own load balancer for kube-api.</p> <h2 id=step-1-create-a-cluster-with-one-master-node-and-no-load-balancer>Step 1 Create a Cluster With One Master Node and No Load Balancer<a href=#step-1-create-a-cluster-with-one-master-node-and-no-load-balancer title="Permalink to this headline">🔗</a><a class=headerlink href=#step-1-create-a-cluster-with-one-master-node-and-no-load-balancer title="Permanent link">¶</a></h2> <p>Create cluster <em>NoLoadBalancer</em> as explained in Prerequisite No. 3. Let there be</p> <blockquote> <ul> <li>one master node and</li> <li>no load balancers (do not check field <strong>Enable Load Balancer for Master Nodes</strong> in subwindow <strong>Network</strong>).</li> <li>Use any key pair that you might have – it is of no concern for this article.</li> <li>Activate NGINX as Ingress controller</li> </ul> </blockquote> <p>The result will be creation of cluster <em>NoLoadBalancer</em> as seen in this image:</p> <p><a class=glightbox href=../_images/noloadbalancer_created.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=noloadbalancer_created.png src=../_images/noloadbalancer_created.png></a></p> <p>To illustrate the problem, a very basic command such as</p> <div class=highlight><pre><span></span><code><span id=__span-1-1><a id=__codelineno-1-1 name=__codelineno-1-1 href=#__codelineno-1-1></a>kubectl get pods NoLoadBalancer -o yaml
|
||
</span></code></pre></div> <p>to list the pods in cluster NoLoadBalancer, will show an error message like this one:</p> <div class=highlight><pre><span></span><code><span id=__span-2-1><a id=__codelineno-2-1 name=__codelineno-2-1 href=#__codelineno-2-1></a>Unable to connect to the server: dial tcp 10.0.0.54:6443: i/o timeout
|
||
</span></code></pre></div> <p>Addresses starting with 10.0… are usually reserved for local networks, meaning that no access from the Internet is enabled at this time.</p> <p><a class=glightbox href=../_images/nodes_address.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=nodes_address.png src=../_images/nodes_address.png></a></p> <h2 id=step-2-create-floating-ip-for-master-node>Step 2 Create Floating IP for Master Node<a href=#step-2-create-floating-ip-for-master-node title="Permalink to this headline">🔗</a><a class=headerlink href=#step-2-create-floating-ip-for-master-node title="Permanent link">¶</a></h2> <p>Here are the instances that serve as nodes for that cluster:</p> <p><a class=glightbox href=../_images/created_instances.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=created_instances.png src=../_images/created_instances.png></a></p> <p>Master node is called <em>noloadbalancer-3h2i5x5iz2u6-master-0</em> and click on the right side of its row and click option <strong>Associate Floating IP</strong>.</p> <p>To add the IP, click on a selection of available addresses (there may be only one but in certain cases, there can be several to choose from):</p> <p><a class=glightbox href=../_images/associate_floating_ip.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=associate_floating_ip.png src=../_images/associate_floating_ip.png></a></p> <p>This is the result:</p> <p><a class=glightbox href=../_images/floating_ip_created.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=floating_ip_created.png src=../_images/floating_ip_created.png></a></p> <p>The IP number is <strong>64.225.135.112</strong> – you are going to use it later on, to change <em>config</em> file for access to the Kubernetes cluster.</p> <h2 id=step-3-create-config-file-for-kubernetes-cluster>Step 3 <strong>Create config File for Kubernetes Cluster</strong><a href=#step-3-create-config-file-for-kubernetes-cluster title="Permalink to this headline">🔗</a><a class=headerlink href=#step-3-create-config-file-for-kubernetes-cluster title="Permanent link">¶</a></h2> <p>You are now going to connect to <em>NoLoadBalancer</em> cluster in spite of it not having a load balancer from the very start. To that end, create a config file to connect to the cluster, with the following command:</p> <div class=highlight><pre><span></span><code><span id=__span-3-1><a id=__codelineno-3-1 name=__codelineno-3-1 href=#__codelineno-3-1></a>openstack coe cluster config NoLoadBalancer --force
|
||
</span></code></pre></div> <p>It will return a row such as this:</p> <div class=highlight><pre><span></span><code><span id=__span-4-1><a id=__codelineno-4-1 name=__codelineno-4-1 href=#__codelineno-4-1></a>export KUBECONFIG=/Users/<YOUR PATH TO CONFIG FILE>/config
|
||
</span></code></pre></div> <p>Execute this command from terminal command line. A config file has also been created at that address. To show its contents, execute command</p> <div class=highlight><pre><span></span><code><span id=__span-5-1><a id=__codelineno-5-1 name=__codelineno-5-1 href=#__codelineno-5-1></a>cat config
|
||
</span></code></pre></div> <p>assuming you already are in the required folder.</p> <p>Config file will look a lot like gibberish because it contains certificates, tokens and other rows with random content, some of them hundreds of characters long. Here is one part of it:</p> <p><a class=glightbox href=../_images/confi_created.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=confi_created.png src=../_images/confi_created.png></a></p> <p>The important row here is this network address:</p> <div class=highlight><pre><span></span><code><span id=__span-6-1><a id=__codelineno-6-1 name=__codelineno-6-1 href=#__codelineno-6-1></a>server: https://10.0.0.54:6443
|
||
</span></code></pre></div> <h2 id=step-4-swap-existing-floating-ip-address-for-the-network-address>Step 4 Swap Existing Floating IP Address for the Network Address<a href=#step-4-swap-existing-floating-ip-address-for-the-network-address title="Permalink to this headline">🔗</a><a class=headerlink href=#step-4-swap-existing-floating-ip-address-for-the-network-address title="Permanent link">¶</a></h2> <p>Now back to Horizon interface and execute commands <strong>Compute</strong> -> <strong>Instances</strong> to see the addresses for master node of the <em>NoLoadBalancer</em> cluster:</p> <p><a class=glightbox href=../_images/master_node_addresses.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=master_node_addresses.png src=../_images/master_node_addresses.png></a></p> <p>There are two addresses:</p> <div class=highlight><pre><span></span><code><span id=__span-7-1><a id=__codelineno-7-1 name=__codelineno-7-1 href=#__codelineno-7-1></a>10.0.0.54, 64.225.135.112
|
||
</span></code></pre></div> <p>Incidentally, the same <strong>10.0.0.54</strong> address is also present in the <em>config</em> file, ending with port address <strong>:6443</strong>.</p> <p>Try now in terminal to execute <strong>kubectl</strong> command and see the result, perhaps like this one:</p> <p><a class=glightbox href=../_images/kubectl_without_access.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=kubectl_without_access.png src=../_images/kubectl_without_access.png></a></p> <p>The access is there but the nodes and pods are still out of reach. That is because address <strong>10.0.0.54</strong> is internal network address for the cluster and was never supposed to work as the Internet address.</p> <p>So, open the <em>config</em> file using <em>nano</em> (or other text editor of your choice). Swap <strong>10.0.0.54</strong> for <strong>64.225.135.112</strong> in line for server access. The address <strong>64.225.135.112</strong> is the address of the floating IP for master node and will fit in perfectly.</p> <p>The line should look like this:</p> <p><a class=glightbox href=../_images/swapped_address.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=swapped_address.png src=../_images/swapped_address.png></a></p> <p>Save the edited file. In case of <strong>nano</strong>, those will be commands <code>Control-x</code>, <code>Y</code> and pressing <code>Enter</code> on the keyboard.</p> <h2 id=step-4-add-parameter-insecure-skip-tls-verifytrue-to-make-kubectl-work>Step 4 Add Parameter –insecure-skip-tls-verify=true to Make kubectl Work<a href=#step-4-add-parameter-insecure-skip-tls-verify-true-to-make-kubectl-work title="Permalink to this headline">🔗</a><a class=headerlink href=#step-4-add-parameter-insecure-skip-tls-verifytrue-to-make-kubectl-work title="Permanent link">¶</a></h2> <p>Try again to activate kubectl and again it will fail. To make it work, add parameter <strong>–insecure-skip-tls-verify=true</strong>:</p> <div class=highlight><pre><span></span><code><span id=__span-8-1><a id=__codelineno-8-1 name=__codelineno-8-1 href=#__codelineno-8-1></a>kubectl get pods --insecure-skip-tls-verify=true
|
||
</span></code></pre></div> <p>Or, try out a more meaningful command</p> <div class=highlight><pre><span></span><code><span id=__span-9-1><a id=__codelineno-9-1 name=__codelineno-9-1 href=#__codelineno-9-1></a>kubectl get nodes --insecure-skip-tls-verify=true
|
||
</span></code></pre></div> <p>This is the result of all these commands, in terminal window:</p> <p><a class=glightbox href=../_images/kubectl_working.png data-type=image data-width=100% data-height=auto data-desc-position=bottom><img alt=kubectl_working.png src=../_images/kubectl_working.png></a></p> <p>To continue working successfully, use normal <strong>kubectl</strong> commands and always add <strong>–insecure-skip-tls-verify=true</strong> in the end.</p> <p>Attention</p> <p>Using parameter <strong>–insecure-skip-tls-verify</strong> won’t check cluster certificates for validity. That will make your <strong>https</strong> connections insecure. Not recommended for production environment. Use at your own risk, maybe for some local testing or when you are just learning about Kubernetes and clusters.</p> <p>For production, it is strongly recommended to check on field <strong>Enable Load Balancer for Master Nodes</strong> when creating a new cluster, regardless of the number of master nodes you have specified.</p> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8z"/></svg> Back to top </button> </main> <footer class=md-footer> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-copyright> Made with <a href=https://squidfunk.github.io/mkdocs-material/ target=_blank rel=noopener> Material for MkDocs </a> </div> </div> </div> </footer> </div> <div class=md-dialog data-md-component=dialog> <div class="md-dialog__inner md-typeset"></div> </div> <script id=__config type=application/json>{"base": "..", "features": ["content.code.annotate", "content.code.copy", "content.tooltips", "navigation.tabs", "navigation.sections", "navigation.footer", "navigation.indexes", "navigation.sections", "navigation.top", "navigation.tracking", "search.highlight", "search.share", "search.suggest", "toc.follow"], "search": "../assets/javascripts/workers/search.d50fe291.min.js", "tags": null, "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": null}</script> <script src=../assets/javascripts/bundle.13a4f30d.min.js></script> <script id="init-glightbox">const lightbox = GLightbox({"touchNavigation": false, "loop": false, "zoomable": true, "draggable": true, "openEffect": "zoom", "closeEffect": "zoom", "slideEffect": "slide"});
|
||
document$.subscribe(() => { lightbox.reload() });
|
||
</script></body> </html> |