{"id":229,"date":"2021-09-05T11:30:00","date_gmt":"2021-09-05T16:30:00","guid":{"rendered":"http:\/\/sycured.127.0.0.1.sslip.io\/?p=229"},"modified":"2024-01-14T11:19:11","modified_gmt":"2024-01-14T16:19:11","slug":"podman-macos","status":"publish","type":"post","link":"http:\/\/10.42.0.68:8080\/blog\/podman-macos","title":{"rendered":"Podman on macOS"},"content":{"rendered":"\n<p>It&#8217;s time to replace Docker Desktop with <a href=\"https:\/\/podman.io\/\">Podman<\/a> on macOS.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">Why am I making this change?<\/h2>\n\n\n\n<p>I don&#8217;t need a GUI for running a simple container and I won&#8217;t continue to use something that needs root permission during its install\/upgrade process.<\/p>\n\n\n\n<p>Also with a big change: Docker Desktop is no longer free for large companies: A <a href=\"https:\/\/www.theregister.com\/2021\/08\/31\/docker_desktop_no_longer_free\/\">New &#8216;Business&#8217; subscription is here<\/a><\/p>\n\n\n\n<p>In addition, I use podman to run containers on my workstation, servers, and orchestrator (Nomad) so it&#8217;s more logical to uniformize the stack.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Install<\/h2>\n\n\n\n<p>The easy way is to use <a href=\"https:\/\/brew.sh\/\">Homebrew<\/a><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>brew install podman<\/code><\/pre>\n\n\n\n<p>Now, we need to set <em>the machine<\/em><\/p>\n\n\n\n<p>In my case, I&#8217;ve to customize it:<\/p>\n\n\n\n<ul>\n<li>CPU: 2 cores (default: 1)<\/li>\n\n\n\n<li>memory: 4 GB (1024 * 4) (default: 2 GB = 2048)<\/li>\n\n\n\n<li>Disk: 50 GB (default: 10 GB)<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>podman machine init --cpus 2 --memory 4096 --disk-size 50<\/code><\/pre>\n\n\n\n<p>Default values are sufficient if you&#8217;re not doing hard work.<\/p>\n\n\n\n<p>I haven&#8217;t added a custom name so it&#8217;ll use the default <code>podman-machine-default<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to start and stop<\/h2>\n\n\n\n<p>I use aliases in my <code>~\/.zshrc<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>alias docker=\"podman\"\nalias podmanstart=\"podman machine start podman-machine-default\"\nalias podmanstop=\"podman machine stop podman-machine-default\"<\/code><\/pre>\n\n\n\n<p>`<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quick fix<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Do I need it?<\/h3>\n\n\n\n<p>After starting using <code>podmanstart<\/code>, we&#8217;ll try to use port forwarding:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>podman pull docker.io\/library\/nginx\npodman run --rm -d --name nginx -p 8888:80 nginx\ncurl 127.0.0.1:8888<\/code><\/pre>\n\n\n\n<p>If curl fails with this message<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl: (7) Failed to connect to 127.0.0.1 port 8888 after 6 ms: Connection refused<\/code><\/pre>\n\n\n\n<p>You need to apply the fix after doing this clean stop<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>podman stop nginx\npodman rmi  nginx\npodmanstop<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Fix<\/h3>\n\n\n\n<p>The fix for port forwarding is adding this lien in <code>~\/.config\/containers\/containers.conf<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>rootless_networking = \"cni\"<\/code><\/pre>\n\n\n\n<p>All done, you can work correctly and you can replace docker-compose with <a href=\"https:\/\/github.com\/containers\/podman-compose\">podman-compose<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It&#8217;s time to replace Docker Desktop with Podman on macOS.<\/p>\n","protected":false},"author":1,"featured_media":103,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"footnotes":""},"categories":[14],"tags":[19],"_links":{"self":[{"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/posts\/229"}],"collection":[{"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/comments?post=229"}],"version-history":[{"count":2,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/posts\/229\/revisions"}],"predecessor-version":[{"id":231,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/posts\/229\/revisions\/231"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/media\/103"}],"wp:attachment":[{"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/media?parent=229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/categories?post=229"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/10.42.0.68:8080\/wp-json\/wp\/v2\/tags?post=229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}