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Diffstat (limited to 'gemfeed')
| -rw-r--r-- | gemfeed/2025-01-01-posts-from-october-to-december-2024.gmi | 1 | ||||
| -rw-r--r-- | gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi | 182 | ||||
| -rw-r--r-- | gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi.tpl | 230 | ||||
| -rw-r--r-- | gemfeed/atom.xml | 941 | ||||
| -rw-r--r-- | gemfeed/index.gmi | 1 |
5 files changed, 1169 insertions, 186 deletions
diff --git a/gemfeed/2025-01-01-posts-from-october-to-december-2024.gmi b/gemfeed/2025-01-01-posts-from-october-to-december-2024.gmi index 2183a7bf..d59f5981 100644 --- a/gemfeed/2025-01-01-posts-from-october-to-december-2024.gmi +++ b/gemfeed/2025-01-01-posts-from-october-to-december-2024.gmi @@ -327,6 +327,7 @@ My New Year's resolution is not to start any new non-fiction books (or only very Other related posts: +=> ./2025-07-01-posts-from-january-to-june-2025.gmi 2025-07-01 Posts from January to June 2025 => ./2025-01-01-posts-from-october-to-december-2024.gmi 2025-01-01 Posts from October to December 2024 (You are currently reading this) E-Mail your comments to `paul@nospam.buetow.org` :-) diff --git a/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi b/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi index 039ba6b3..6e3f9395 100644 --- a/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi +++ b/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi @@ -22,6 +22,15 @@ This is the sixth blog post about the f3s series for self-hosting demands in a h * ⇢ ⇢ ⇢ Configuring `zdata` ZFS pool and encryption * ⇢ ⇢ ⇢ Migrating Bhyve VMs to encrypted `bhyve` ZFS volume * ⇢ ⇢ CARP +* ⇢ ⇢ ZFS Replication with zrepl +* ⇢ ⇢ ⇢ Installing zrepl +* ⇢ ⇢ ⇢ Checking ZFS pools +* ⇢ ⇢ ⇢ Configuring zrepl with WireGuard tunnel +* ⇢ ⇢ ⇢ Configuring zrepl on f0 (source) +* ⇢ ⇢ ⇢ Configuring zrepl on f1 (sink) +* ⇢ ⇢ ⇢ Enabling and starting zrepl services +* ⇢ ⇢ ⇢ Verifying replication +* ⇢ ⇢ ⇢ Monitoring replication ## Introduction @@ -189,6 +198,179 @@ next, copied that script /usr/local/bin/carpcontrol.sh and adjusted the disk to reboot or run doas kldload carp0 +## ZFS Replication with zrepl + +In this section, we'll set up automatic ZFS replication from f0 to f1 using zrepl. This ensures our data is replicated across nodes for redundancy. + +### Installing zrepl + +First, install zrepl on both hosts: + +```sh +# On f0 +paul@f0:~ % doas pkg install -y zrepl + +# On f1 +paul@f1:~ % doas pkg install -y zrepl +``` + +### Checking ZFS pools + +Verify the pools and datasets on both hosts: + +```sh +# On f0 +paul@f0:~ % doas zpool list +NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT +zdata 928G 1.03M 928G - - 0% 0% 1.00x ONLINE - +zroot 472G 26.7G 445G - - 0% 5% 1.00x ONLINE - + +paul@f0:~ % doas zfs list -r zdata/enc +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc 200K 899G 200K /data/enc + +# On f1 +paul@f1:~ % doas zpool list +NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT +zdata 928G 956K 928G - - 0% 0% 1.00x ONLINE - +zroot 472G 11.7G 460G - - 0% 2% 1.00x ONLINE - + +paul@f1:~ % doas zfs list -r zdata/enc +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc 200K 899G 200K /data/enc +``` + +### Configuring zrepl with WireGuard tunnel + +Since we have a WireGuard tunnel between f0 and f1, we'll use TCP transport over the secure tunnel instead of SSH. First, check the WireGuard IP addresses: + +```sh +# Check WireGuard interface IPs +paul@f0:~ % ifconfig wg0 | grep inet + inet 192.168.2.130 netmask 0xffffff00 + +paul@f1:~ % ifconfig wg0 | grep inet + inet 192.168.2.131 netmask 0xffffff00 +``` + +### Configuring zrepl on f0 (source) + +Create the zrepl configuration on f0: + +```sh +paul@f0:~ % doas tee /usr/local/etc/zrepl/zrepl.yml <<'EOF' +global: + logging: + - type: stdout + level: info + format: human + +jobs: + - name: "f0_to_f1" + type: push + connect: + type: tcp + address: "192.168.2.131:8888" + filesystems: { + "zdata/enc": true + } + send: + encrypted: true + snapshotting: + type: periodic + prefix: zrepl_ + interval: 10m + pruning: + keep_sender: + - type: last_n + count: 10 + - type: grid + grid: 1x1h(keep=all) | 24x1h | 7x1d | 4x7d | 6x30d + regex: "^zrepl_.*" + keep_receiver: + - type: grid + grid: 1x1h(keep=all) | 24x1h | 7x1d | 4x7d | 6x30d + regex: "^zrepl_.*" +EOF +``` + +### Configuring zrepl on f1 (sink) + +Create the zrepl configuration on f1: + +```sh +paul@f1:~ % doas tee /usr/local/etc/zrepl/zrepl.yml <<'EOF' +global: + logging: + - type: stdout + level: info + format: human + +jobs: + - name: "sink" + type: sink + serve: + type: tcp + listen: "192.168.2.131:8888" + clients: + "192.168.2.130": "f0" + recv: + placeholder: + encryption: inherit + root_fs: "zdata/enc" +EOF +``` + +### Enabling and starting zrepl services + +Enable and start zrepl on both hosts: + +```sh +# On f0 +paul@f0:~ % doas sysrc zrepl_enable=YES +zrepl_enable: -> YES +paul@f0:~ % doas service zrepl start +Starting zrepl. + +# On f1 +paul@f1:~ % doas sysrc zrepl_enable=YES +zrepl_enable: -> YES +paul@f1:~ % doas service zrepl start +Starting zrepl. +``` + +### Verifying replication + +Check the replication status: + +```sh +# On f0, check zrepl status +paul@f0:~ % doas zrepl status + +# Check for zrepl snapshots +paul@f0:~ % doas zfs list -t snapshot -r zdata/enc | grep zrepl + +# On f1, verify the replicated datasets +paul@f1:~ % doas zfs list -r zdata/enc + +# Check zrepl logs for any errors +paul@f0:~ % doas tail -f /var/log/zrepl.log +``` + +### Monitoring replication + +You can monitor the replication progress with: + +```sh +# Real-time status +paul@f0:~ % doas zrepl status --mode interactive + +# Check specific job details +paul@f0:~ % doas zrepl status --job f0_to_f1 +``` + +With this setup, zdata/enc on f0 will be automatically replicated to f1 every 10 minutes, with encrypted snapshots preserved on both sides. The pruning policy ensures that we keep recent snapshots while managing disk space efficiently. + ZFS auto scrubbing....~? Backup of the keys on the key locations (all keys on all 3 USB keys) diff --git a/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi.tpl b/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi.tpl index a2b7ea5f..64fa1cf1 100644 --- a/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi.tpl +++ b/gemfeed/DRAFT-f3s-kubernetes-with-freebsd-part-6.gmi.tpl @@ -176,6 +176,236 @@ next, copied that script /usr/local/bin/carpcontrol.sh and adjusted the disk to reboot or run doas kldload carp0 +## ZFS Replication with zrepl + +In this section, we'll set up automatic ZFS replication from f0 to f1 using zrepl. This ensures our data is replicated across nodes for redundancy. + +### Installing zrepl + +First, install zrepl on both hosts: + +```sh +# On f0 +paul@f0:~ % doas pkg install -y zrepl + +# On f1 +paul@f1:~ % doas pkg install -y zrepl +``` + +### Checking ZFS pools + +Verify the pools and datasets on both hosts: + +```sh +# On f0 +paul@f0:~ % doas zpool list +NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT +zdata 928G 1.03M 928G - - 0% 0% 1.00x ONLINE - +zroot 472G 26.7G 445G - - 0% 5% 1.00x ONLINE - + +paul@f0:~ % doas zfs list -r zdata/enc +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc 200K 899G 200K /data/enc + +# On f1 +paul@f1:~ % doas zpool list +NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT +zdata 928G 956K 928G - - 0% 0% 1.00x ONLINE - +zroot 472G 11.7G 460G - - 0% 2% 1.00x ONLINE - + +paul@f1:~ % doas zfs list -r zdata/enc +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc 200K 899G 200K /data/enc +``` + +### Configuring zrepl with WireGuard tunnel + +Since we have a WireGuard tunnel between f0 and f1, we'll use TCP transport over the secure tunnel instead of SSH. First, check the WireGuard IP addresses: + +```sh +# Check WireGuard interface IPs +paul@f0:~ % ifconfig wg0 | grep inet + inet 192.168.2.130 netmask 0xffffff00 + +paul@f1:~ % ifconfig wg0 | grep inet + inet 192.168.2.131 netmask 0xffffff00 +``` + +### Configuring zrepl on f0 (source) + +Create the zrepl configuration on f0: + +```sh +paul@f0:~ % doas tee /usr/local/etc/zrepl/zrepl.yml <<'EOF' +global: + logging: + - type: stdout + level: info + format: human + +jobs: + - name: f0_to_f1 + type: push + connect: + type: tcp + address: "192.168.2.131:8888" + filesystems: + "zdata/enc": true + send: + encrypted: true + snapshotting: + type: periodic + prefix: zrepl_ + interval: 10m + pruning: + keep_sender: + - type: last_n + count: 10 + keep_receiver: + - type: last_n + count: 10 +EOF +``` + +### Configuring zrepl on f1 (sink) + +Create the zrepl configuration on f1: + +```sh +paul@f1:~ % doas tee /usr/local/etc/zrepl/zrepl.yml <<'EOF' +global: + logging: + - type: stdout + level: info + format: human + +jobs: + - name: "sink" + type: sink + serve: + type: tcp + listen: "192.168.2.131:8888" + clients: + "192.168.2.130": "f0" + recv: + placeholder: + encryption: inherit + root_fs: "zdata/enc" +EOF +``` + +### Enabling and starting zrepl services + +Enable and start zrepl on both hosts: + +```sh +# On f0 +paul@f0:~ % doas sysrc zrepl_enable=YES +zrepl_enable: -> YES +paul@f0:~ % doas service zrepl start +Starting zrepl. + +# On f1 +paul@f1:~ % doas sysrc zrepl_enable=YES +zrepl_enable: -> YES +paul@f1:~ % doas service zrepl start +Starting zrepl. +``` + +### Verifying replication + +Check the replication status: + +```sh +# On f0, check zrepl status (use raw mode for non-tty) +paul@f0:~ % doas zrepl status --mode raw | grep -A2 "Replication" +"Replication":{"StartAt":"2025-07-01T22:31:48.712143123+03:00"... + +# Check if services are running +paul@f0:~ % doas service zrepl status +zrepl is running as pid 2649. + +paul@f1:~ % doas service zrepl status +zrepl is running as pid 2574. + +# Check for zrepl snapshots on source +paul@f0:~ % doas zfs list -t snapshot -r zdata/enc | grep zrepl +zdata/enc@zrepl_20250701_193148_000 0B - 176K - + +# On f1, verify the replicated datasets +paul@f1:~ % doas zfs list -r zdata/enc +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc 776K 899G 200K /data/enc +zdata/enc/f0 576K 899G 200K none +zdata/enc/f0/zdata 376K 899G 200K none +zdata/enc/f0/zdata/enc 176K 899G 176K none + +# Check replicated snapshots on f1 +paul@f1:~ % doas zfs list -t snapshot -r zdata/enc +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc/f0/zdata/enc@zrepl_20250701_193148_000 0B - 176K - +``` + +### Monitoring replication + +You can monitor the replication progress with: + +```sh +# Real-time status +paul@f0:~ % doas zrepl status --mode interactive + +# Check specific job details +paul@f0:~ % doas zrepl status --job f0_to_f1 +``` + +With this setup, zdata/enc on f0 will be automatically replicated to f1 every 10 minutes, with encrypted snapshots preserved on both sides. The pruning policy ensures that we keep the last 10 snapshots while managing disk space efficiently. + +The replicated data appears on f1 under `zdata/enc/f0/zdata/enc` to maintain the source dataset hierarchy. The replication uses the WireGuard tunnel for secure, encrypted transport between nodes. + +### Quick status check commands + +Here are the essential commands to monitor replication status: + +```sh +# On the source node (f0) - check if replication is active +paul@f0:~ % doas zrepl status --job f0_to_f1 | grep -E '(State|Last)' +State: done +LastError: + +# List all zrepl snapshots on source +paul@f0:~ % doas zfs list -t snapshot -r zdata/enc | grep zrepl +zdata/enc@zrepl_20250701_193148_000 0B - 176K - +zdata/enc@zrepl_20250701_194148_000 0B - 176K - + +# On the sink node (f1) - verify received datasets +paul@f1:~ % doas zfs list -r zdata/enc/f0 +NAME USED AVAIL REFER MOUNTPOINT +zdata/enc/f0 576K 899G 200K none +zdata/enc/f0/zdata 376K 899G 200K none +zdata/enc/f0/zdata/enc 176K 899G 176K none + +# Check received snapshots on sink +paul@f1:~ % doas zfs list -t snapshot -r zdata/enc | wc -l + 2 + +# Monitor replication progress in real-time (on source) +paul@f0:~ % doas zrepl status --mode interactive + +# Check last replication time (on source) +paul@f0:~ % doas zrepl status --job f0_to_f1 | grep -A1 "Replication" +Replication: + Status: Idle (last run: 2025-07-01T22:41:48) + +# View zrepl logs for troubleshooting +paul@f0:~ % doas tail -20 /var/log/zrepl.log | grep -E '(error|warn|replication)' +``` + +These commands provide a quick way to verify that: +- Replication jobs are running without errors +- Snapshots are being created on the source +- Data is being received on the sink +- The replication schedule is being followed + ZFS auto scrubbing....~? Backup of the keys on the key locations (all keys on all 3 USB keys) diff --git a/gemfeed/atom.xml b/gemfeed/atom.xml index 7d3fd79e..55a54ef4 100644 --- a/gemfeed/atom.xml +++ b/gemfeed/atom.xml @@ -1,12 +1,765 @@ <?xml version="1.0" encoding="utf-8"?> <feed xmlns="http://www.w3.org/2005/Atom"> - <updated>2025-06-29T13:29:59+03:00</updated> + <updated>2025-07-01T22:39:30+03:00</updated> <title>foo.zone feed</title> <subtitle>To be in the .zone!</subtitle> <link href="gemini://foo.zone/gemfeed/atom.xml" rel="self" /> <link href="gemini://foo.zone/" /> <id>gemini://foo.zone/</id> <entry> + <title>Posts from January to June 2025</title> + <link href="gemini://foo.zone/gemfeed/2025-07-01-posts-from-january-to-june-2025.gmi" /> + <id>gemini://foo.zone/gemfeed/2025-07-01-posts-from-january-to-june-2025.gmi</id> + <updated>2025-07-01T22:39:29+03:00</updated> + <author> + <name>Paul Buetow aka snonux</name> + <email>paul@dev.buetow.org</email> + </author> + <summary>These are my social media posts from the last six months. I keep them here to reflect on them and also to not lose them. Social media networks come and go and are not under my control, but my domain is here to stay. </summary> + <content type="xhtml"> + <div xmlns="http://www.w3.org/1999/xhtml"> + <h1 style='display: inline' id='posts-from-january-to-june-2025'>Posts from January to June 2025</h1><br /> +<br /> +<span>These are my social media posts from the last six months. I keep them here to reflect on them and also to not lose them. Social media networks come and go and are not under my control, but my domain is here to stay. </span><br /> +<br /> +<span>These are from Mastodon and LinkedIn. Have a look at my about page for my social media profiles. This list is generated with Gos, my social media platform sharing tool.</span><br /> +<br /> +<a class='textlink' href='../about/index.html'>My about page</a><br /> +<a class='textlink' href='https://codeberg.org/snonux/gos'>https://codeberg.org/snonux/gos</a><br /> +<br /> +<h2 style='display: inline' id='table-of-contents'>Table of Contents</h2><br /> +<br /> +<ul> +<li><a href='#posts-from-january-to-june-2025'>Posts from January to June 2025</a></li> +<li>⇢ <a href='#january-2025'>January 2025</a></li> +<li>⇢ ⇢ <a href='#i-am-currently-binge-listening-to-the-google-'>I am currently binge-listening to the Google ...</a></li> +<li>⇢ ⇢ <a href='#recently-there-was-a-5000-loc-bash-'>Recently, there was a >5000 LOC <span class='inlinecode'>#bash</span> ...</a></li> +<li>⇢ ⇢ <a href='#ghostty-is-a-terminal-emulator-that-was-'>Ghostty is a terminal emulator that was ...</a></li> +<li>⇢ ⇢ <a href='#go-is-not-an-easy-programming-language-don-t-'>Go is not an easy programming language. Don't ...</a></li> +<li>⇢ ⇢ <a href='#how-will-ai-change-software-engineering-or-has-'>How will AI change software engineering (or has ...</a></li> +<li>⇢ ⇢ <a href='#eliminating-toil---toil-is-not-always-a-bad-'>Eliminating toil - Toil is not always a bad ...</a></li> +<li>⇢ ⇢ <a href='#fun-read-how-about-using-the-character-'>Fun read. How about using the character ...</a></li> +<li>⇢ ⇢ <a href='#thats-unexpected-you-cant-remove-a-nan-key-'>Thats unexpected, you cant remove a NaN key ...</a></li> +<li>⇢ ⇢ <a href='#nice-refresher-for-shell-bash-zsh-'>Nice refresher for <span class='inlinecode'>#shell</span> <span class='inlinecode'>#bash</span> <span class='inlinecode'>#zsh</span> ...</a></li> +<li>⇢ ⇢ <a href='#i-think-discussing-action-items-in-incident-'>I think discussing action items in incident ...</a></li> +<li>⇢ ⇢ <a href='#at-first-functional-options-add-a-bit-of-'>At first, functional options add a bit of ...</a></li> +<li>⇢ ⇢ <a href='#in-the-working-with-an-sre-interview-i-have-'>In the "Working with an SRE Interview" I have ...</a></li> +<li>⇢ ⇢ <a href='#in-the-working-with-an-sre-interview-i-have-'>In the "Working with an SRE Interview" I have ...</a></li> +<li>⇢ ⇢ <a href='#small-introduction-to-the-android-'>Small introduction to the <span class='inlinecode'>#Android</span> ...</a></li> +<li>⇢ ⇢ <a href='#helix-202501-has-been-released-the-completion-'>Helix 2025.01 has been released. The completion ...</a></li> +<li>⇢ ⇢ <a href='#i-found-these-are-excellent-examples-of-how-'>I found these are excellent examples of how ...</a></li> +<li>⇢ ⇢ <a href='#llms-for-ops-summaries-of-logs-probabilities-'>LLMs for Ops? Summaries of logs, probabilities ...</a></li> +<li>⇢ ⇢ <a href='#enjoying-an-apc-power-ups-bx750mi-in-my-'>Enjoying an APC Power-UPS BX750MI in my ...</a></li> +<li>⇢ ⇢ <a href='#even-in-the-projects-where-i-m-the-only-'>"Even in the projects where I'm the only ...</a></li> +<li>⇢ ⇢ <a href='#connecting-an-ups-to-my-freebsd-cluster-'>Connecting an <span class='inlinecode'>#UPS</span> to my <span class='inlinecode'>#FreeBSD</span> cluster ...</a></li> +<li>⇢ ⇢ <a href='#so-the-co-founder-and-cto-of-honeycombio-and-'>So, the Co-founder and CTO of honeycomb.io and ...</a></li> +<li>⇢ <a href='#february-2025'>February 2025</a></li> +<li>⇢ ⇢ <a href='#i-don-t-know-about-you-but-at-work-i-usually-'>I don't know about you, but at work, I usually ...</a></li> +<li>⇢ ⇢ <a href='#great-proposal-got-accepted-by-the-goteam-for-'>Great proposal (got accepted by the Goteam) for ...</a></li> +<li>⇢ ⇢ <a href='#my-gemtexter-has-only-1320-loc-the-biggest-'>My Gemtexter has only 1320 LOC.... The Biggest ...</a></li> +<li>⇢ ⇢ <a href='#against-tmp---he-is-making-a-point-unix-'>Against /tmp - He is making a point <span class='inlinecode'>#unix</span> ...</a></li> +<li>⇢ ⇢ <a href='#random-weird-things-part-2-blog-'>Random Weird Things Part 2: <span class='inlinecode'>#blog</span> ...</a></li> +<li>⇢ ⇢ <a href='#as-a-former-pebble-user-and-fan-thats-'>As a former <span class='inlinecode'>#Pebble</span> user and fan, thats ...</a></li> +<li>⇢ ⇢ <a href='#i-think-i-am-slowly-getting-the-point-of-cue-'>I think I am slowly getting the point of Cue. ...</a></li> +<li>⇢ ⇢ <a href='#jonathan-s-reflection-of-10-years-of-'>Jonathan's reflection of 10 years of ...</a></li> +<li>⇢ ⇢ <a href='#really-enjoyed-reading-this-easily-digestible-'>Really enjoyed reading this. Easily digestible ...</a></li> +<li>⇢ ⇢ <a href='#some-great-advice-from-40-years-of-experience-'>Some great advice from 40 years of experience ...</a></li> +<li>⇢ ⇢ <a href='#i-enjoyed-this-talk-some-recipes-i-knew-'>I enjoyed this talk, some recipes I knew ...</a></li> +<li>⇢ ⇢ <a href='#a-way-of-how-to-add-the-version-info-to-the-go-'>A way of how to add the version info to the Go ...</a></li> +<li>⇢ ⇢ <a href='#in-other-words-using-tparallel-for-'>In other words, using t.Parallel() for ...</a></li> +<li>⇢ ⇢ <a href='#neat-little-blog-post-showcasing-various-'>Neat little blog post, showcasing various ...</a></li> +<li>⇢ ⇢ <a href='#the-smallest-thing-in-go-golang-'>The smallest thing in Go <span class='inlinecode'>#golang</span> ...</a></li> +<li>⇢ ⇢ <a href='#fun-with-defer-in-golang-i-did-t-know-that-'>Fun with defer in <span class='inlinecode'>#golang</span>, I did't know, that ...</a></li> +<li>⇢ ⇢ <a href='#what-i-like-about-go-is-that-it-is-still-'>What I like about Go is that it is still ...</a></li> +<li>⇢ <a href='#march-2025'>March 2025</a></li> +<li>⇢ ⇢ <a href='#television-has-somewhat-transformed-how-i-work-'>Television has somewhat transformed how I work ...</a></li> +<li>⇢ ⇢ <a href='#once-in-a-while-i-like-to-read-a-book-about-a-'>Once in a while, I like to read a book about a ...</a></li> +<li>⇢ ⇢ <a href='#as-you-may-have-noticed-i-like-to-share-on-'>As you may have noticed, I like to share on ...</a></li> +<li>⇢ ⇢ <a href='#personally-i-think-ai-llms-are-pretty-'>Personally, I think AI (LLMs) are pretty ...</a></li> +<li>⇢ ⇢ <a href='#type-aliases-in-golang-soon-also-work-with-'>Type aliases in <span class='inlinecode'>#golang</span>, soon also work with ...</a></li> +<li>⇢ ⇢ <a href='#perl-my-first-love-of-programming-'><span class='inlinecode'>#Perl</span>, my "first love" of programming ...</a></li> +<li>⇢ ⇢ <a href='#i-guess-there-are-valid-reasons-for-phttpdget-'>I guess there are valid reasons for phttpdget, ...</a></li> +<li>⇢ ⇢ <a href='#this-is-one-of-the-reasons-why-i-like-'>This is one of the reasons why I like ...</a></li> +<li>⇢ ⇢ <a href='#advanced-concurrency-patterns-with-golang-'>Advanced Concurrency Patterns with <span class='inlinecode'>#Golang</span> ...</a></li> +<li>⇢ ⇢ <a href='#sqlite-was-designed-as-an-tcl-extension-'><span class='inlinecode'>#SQLite</span> was designed as an <span class='inlinecode'>#TCL</span> extension. ...</a></li> +<li>⇢ ⇢ <a href='#git-provides-automatic-rendering-of-markdown-'>Git provides automatic rendering of Markdown ...</a></li> +<li>⇢ ⇢ <a href='#these-are-some-neat-little-go-tips-linters-'>These are some neat little Go tips. Linters ...</a></li> +<li>⇢ ⇢ <a href='#this-is-a-great-introductory-blog-post-about-'>This is a great introductory blog post about ...</a></li> +<li>⇢ ⇢ <a href='#maps-in-go-under-the-hood-golang-'>Maps in Go under the hood <span class='inlinecode'>#golang</span> ...</a></li> +<li>⇢ ⇢ <a href='#i-found-that-working-on-multiple-side-projects-'>I found that working on multiple side projects ...</a></li> +<li>⇢ ⇢ <a href='#i-have-been-in-incidents-understandably-'>I have been in incidents. Understandably, ...</a></li> +<li>⇢ ⇢ <a href='#i-dont-understand-what-it-is-certificates-are-'>I dont understand what it is. Certificates are ...</a></li> +<li>⇢ ⇢ <a href='#don-t-just-blindly-trust-llms-i-recently-'>Don't just blindly trust LLMs. I recently ...</a></li> +<li>⇢ <a href='#april-2025'>April 2025</a></li> +<li>⇢ ⇢ <a href='#i-knew-about-any-being-equivalent-to-'>I knew about any being equivalent to ...</a></li> +<li>⇢ ⇢ <a href='#neat-summary-of-new-perl-features-per-'>Neat summary of new <span class='inlinecode'>#Perl</span> features per ...</a></li> +<li>⇢ ⇢ <a href='#errorsas-checks-for-the-error-type-whereas-'>errors.As() checks for the error type, whereas ...</a></li> +<li>⇢ ⇢ <a href='#good-stuff-10-years-of-functional-options-and-'>Good stuff: 10 years of functional options and ...</a></li> +<li>⇢ ⇢ <a href='#i-had-some-fun-with-freebsd-bhyve-and-'>I had some fun with <span class='inlinecode'>#FreeBSD</span>, <span class='inlinecode'>#Bhyve</span> and ...</a></li> +<li>⇢ ⇢ <a href='#the-moment-your-blog-receives-prs-for-typo-'>The moment your blog receives PRs for typo ...</a></li> +<li>⇢ ⇢ <a href='#one-thing-not-mentioned-is-that-openrsync-s-'>One thing not mentioned is that <span class='inlinecode'>#OpenRsync</span>'s ...</a></li> +<li>⇢ ⇢ <a href='#this-is-an-interesting-elixir-pipes-operator-'>This is an interesting <span class='inlinecode'>#Elixir</span> pipes operator ...</a></li> +<li>⇢ ⇢ <a href='#the-story-of-how-my-favorite-golang-book-was-'>The story of how my favorite <span class='inlinecode'>#Golang</span> book was ...</a></li> +<li>⇢ ⇢ <a href='#these-are-my-personal-book-notes-from-daniel-'>These are my personal book notes from Daniel ...</a></li> +<li>⇢ ⇢ <a href='#i-certainly-learned-a-lot-reading-this-llm-'>I certainly learned a lot reading this <span class='inlinecode'>#llm</span> ...</a></li> +<li>⇢ ⇢ <a href='#writing-indempotent-bash-scripts-'>Writing indempotent <span class='inlinecode'>#Bash</span> scripts ...</a></li> +<li>⇢ ⇢ <a href='#regarding-ai-for-code-generation-you-should-'>Regarding <span class='inlinecode'>#AI</span> for code generation. You should ...</a></li> +<li>⇢ ⇢ <a href='#i-like-the-rocky-metaphor-and-this-post-also-'>I like the Rocky metaphor. And this post also ...</a></li> +<li>⇢ <a href='#may-2025'>May 2025</a></li> +<li>⇢ ⇢ <a href='#there-s-now-also-a-fish-shell-edition-of-my-'>There's now also a <span class='inlinecode'>#Fish</span> shell edition of my ...</a></li> +<li>⇢ ⇢ <a href='#i-loved-this-talk-it-s-about-how-you-can-'>I loved this talk. It's about how you can ...</a></li> +<li>⇢ ⇢ <a href='#some-unexpected-golang-stuff-ppl-say-that-'>Some unexpected <span class='inlinecode'>#golang</span> stuff, ppl say, that ...</a></li> +<li>⇢ ⇢ <a href='#with-the-advent-of-ai-and-llms-i-have-observed-'>With the advent of AI and LLMs, I have observed ...</a></li> +<li>⇢ ⇢ <a href='#for-science-fun-and-profit-i-set-up-a-'>For science, fun and profit, I set up a ...</a></li> +<li>⇢ ⇢ <a href='#ever-wondered-about-the-hung-task-linux-'>Ever wondered about the hung task Linux ...</a></li> +<li>⇢ ⇢ <a href='#a-bit-of-fun-the-fortran-hating-gateway--'>A bit of <span class='inlinecode'>#fun</span>: The FORTRAN hating gateway ― ...</a></li> +<li>⇢ ⇢ <a href='#so-golang-was-invented-while-engineers-at-'>So, Golang was invented while engineers at ...</a></li> +<li>⇢ ⇢ <a href='#i-couldn-t-do-without-here-docs-if-they-did-'>I couldn't do without here-docs. If they did ...</a></li> +<li>⇢ ⇢ <a href='#i-started-using-computers-as-a-kid-on-ms-dos-'>I started using computers as a kid on MS-DOS ...</a></li> +<li>⇢ ⇢ <a href='#thats-interesting-running-android-in-'>Thats interesting, running <span class='inlinecode'>#Android</span> in ...</a></li> +<li>⇢ ⇢ <a href='#before-wiping-the-pre-installed-windows-11-'>Before wiping the pre-installed <span class='inlinecode'>#Windows</span> 11 ...</a></li> +<li>⇢ ⇢ <a href='#some-might-hate-me-saying-this-but-didnt-'>Some might hate me saying this, but didnt ...</a></li> +<li>⇢ ⇢ <a href='#wouldn-t-still-do-that-even-with-100-test-'>Wouldn't still do that, even with 100% test ...</a></li> +<li>⇢ ⇢ <a href='#some-neat-slice-tricks-for-go-golang-'>Some neat slice tricks for Go: <span class='inlinecode'>#golang</span> ...</a></li> +<li>⇢ ⇢ <a href='#i-understand-that-kubernetes-is-not-for-'>I understand that Kubernetes is not for ...</a></li> +<li>⇢ <a href='#june-2025'>June 2025</a></li> +<li>⇢ ⇢ <a href='#some-great-advices-will-try-out-some-of-them-'>Some great advices, will try out some of them! ...</a></li> +<li>⇢ ⇢ <a href='#in-golang-values-are-actually-copied-when-'>In <span class='inlinecode'>#Golang</span>, values are actually copied when ...</a></li> +<li>⇢ ⇢ <a href='#this-is-a-great-little-tutorial-for-searching-'>This is a great little tutorial for searching ...</a></li> +<li>⇢ ⇢ <a href='#the-mov-instruction-of-a-cpu-is-turing-'>The mov instruction of a CPU is turing ...</a></li> +<li>⇢ ⇢ <a href='#i-removed-the-social-media-profile-from-my-'>I removed the social media profile from my ...</a></li> +<li>⇢ ⇢ <a href='#so-want-a-real-recent-unix-use-aix-macos-'>So want a "real" recent UNIX? Use AIX! <span class='inlinecode'>#macos</span> ...</a></li> +<li>⇢ ⇢ <a href='#this-episode-i-think-is-kind-of-an-eye-opener-'>This episode, I think, is kind of an eye-opener ...</a></li> +<li>⇢ ⇢ <a href='#my-openbsd-blog-setup-got-mentioned-in-the-'>My <span class='inlinecode'>#OpenBSD</span> blog setup got mentioned in the ...</a></li> +<li>⇢ ⇢ <a href='#golang-is-the-best-when-it-comes-to-agentic-'><span class='inlinecode'>#Golang</span> is the best when it comes to agentic ...</a></li> +<li>⇢ ⇢ <a href='#where-zsh-is-better-than-bash-'>Where <span class='inlinecode'>#zsh</span> is better than <span class='inlinecode'>#bash</span> ...</a></li> +<li>⇢ ⇢ <a href='#i-really-enjoyed-this-talk-about-obscure-go-'>I really enjoyed this talk about obscure Go ...</a></li> +<li>⇢ ⇢ <a href='#commenting-your-regular-expression-is-generally-'>Commenting your regular expression is generally ...</a></li> +<li>⇢ ⇢ <a href='#you-have-to-make-a-decision-for-yourself-but-'>You have to make a decision for yourself, but ...</a></li> +<li>⇢ ⇢ <a href='#100-go-mistakes-and-how-to-avoid-them-is-one-'>"100 Go Mistakes and How to Avoid Them" is one ...</a></li> +<li>⇢ ⇢ <a href='#the-ruby-data-class-seems-quite-helpful-'>The <span class='inlinecode'>#Ruby</span> Data class seems quite helpful ...</a></li> +</ul><br /> +<h2 style='display: inline' id='january-2025'>January 2025</h2><br /> +<br /> +<h3 style='display: inline' id='i-am-currently-binge-listening-to-the-google-'>I am currently binge-listening to the Google ...</h3><br /> +<br /> +<span>I am currently binge-listening to the Google <span class='inlinecode'>#SRE</span> ProdCast. It's really great to learn about the stories of individual SREs and their journeys. It is not just about SREs at Google; there are also external guests.</span><br /> +<br /> +<a class='textlink' href='https://sre.google/prodcast/'>sre.google/prodcast/</a><br /> +<br /> +<h3 style='display: inline' id='recently-there-was-a-5000-loc-bash-'>Recently, there was a >5000 LOC <span class='inlinecode'>#bash</span> ...</h3><br /> +<br /> +<span>Recently, there was a >5000 LOC <span class='inlinecode'>#bash</span> codebase at work that reported the progress of a migration, nobody understood it and it was wonky (sometimes it would not return the desired results). On top of that, the coding style was very bad as well (I could rant forever here). The engineer who wrote it left the company. I rewrote it in <span class='inlinecode'>#Perl</span> in about 300 LOC. Colleagues asked why not Python. Perl is the perfect choice here—it's even in its name: Practical Extraction and Report Language!</span><br /> +<br /> +<h3 style='display: inline' id='ghostty-is-a-terminal-emulator-that-was-'>Ghostty is a terminal emulator that was ...</h3><br /> +<br /> +<span>Ghostty is a terminal emulator that was recently released publicly as open-source. I love that it works natively on both Linux and macOS; it looks great (font rendering) and is fast and customizable via a config file (which I manage with a config mng system). Ghostty is a passion project written in Zig, the author loved the community so much while working on it that he donated $300k to the Zig Foundation. <span class='inlinecode'>#terminal</span> <span class='inlinecode'>#emulator</span></span><br /> +<br /> +<a class='textlink' href='https://ghostty.org'>ghostty.org</a><br /> +<br /> +<h3 style='display: inline' id='go-is-not-an-easy-programming-language-don-t-'>Go is not an easy programming language. Don't ...</h3><br /> +<br /> +<span>Go is not an easy programming language. Don't confuse easy with simple syntax. I'd agree to this. With the recent addition of Generics to the language I also feel that even the syntax stops being simple.. Also, simplicity is complex (especially under the hood how the language works - there are many mechanics you need to know if you really want to master the language). <span class='inlinecode'>#golang</span></span><br /> +<br /> +<a class='textlink' href='https://www.arp242.net/go-easy.html'>www.arp242.net/go-easy.html</a><br /> +<br /> +<h3 style='display: inline' id='how-will-ai-change-software-engineering-or-has-'>How will AI change software engineering (or has ...</h3><br /> +<br /> +<span>How will AI change software engineering (or has it already)? The bottom line is that less experienced engineers may have problems (accepting incomplete or incorrect programs, only reaching 70 percent solutions), while experienced engineers can leverage AI to boost their performance as they know how to fix the remaining 30 percent of the generated code. <span class='inlinecode'>#ai</span> <span class='inlinecode'>#engineering</span> <span class='inlinecode'>#software</span></span><br /> +<br /> +<a class='textlink' href='https://newsletter.pragmaticengineer.com/p/how-ai-will-change-software-engineering'>newsletter.pragmaticengineer.com/p/how-ai-will-change-software-engineering</a><br /> +<br /> +<h3 style='display: inline' id='eliminating-toil---toil-is-not-always-a-bad-'>Eliminating toil - Toil is not always a bad ...</h3><br /> +<br /> +<span>Eliminating toil - Toil is not always a bad thing - some even enjoy toil - it is calming in small amounts - but it becomes toxic in large amounts - <span class='inlinecode'>#SRE</span></span><br /> +<br /> +<a class='textlink' href='https://sre.google/sre-book/eliminating-toil/'>sre.google/sre-book/eliminating-toil/</a><br /> +<br /> +<h3 style='display: inline' id='fun-read-how-about-using-the-character-'>Fun read. How about using the character ...</h3><br /> +<br /> +<span>Fun read. How about using the character sequence :-) as a statement separator in a programming language?</span><br /> +<br /> +<a class='textlink' href='https://ntietz.com/blog/researching-why-we-use-semicolons-as-statement-terminators/'>ntietz.com/blog/researching-why-we-use-semicolons-as-statement-terminators/</a><br /> +<br /> +<h3 style='display: inline' id='thats-unexpected-you-cant-remove-a-nan-key-'>Thats unexpected, you cant remove a NaN key ...</h3><br /> +<br /> +<span>Thats unexpected, you cant remove a NaN key from a map without clearing it! <span class='inlinecode'>#golang</span> via @wallabagapp</span><br /> +<br /> +<a class='textlink' href='https://unexpected-go.com/you-cant-remove-a-nan-key-from-a-map-without-clearing-it.html'>unexpected-go.com/you-cant-remove-a-nan-key-from-a-map-without-clearing-it.html</a><br /> +<br /> +<h3 style='display: inline' id='nice-refresher-for-shell-bash-zsh-'>Nice refresher for <span class='inlinecode'>#shell</span> <span class='inlinecode'>#bash</span> <span class='inlinecode'>#zsh</span> ...</h3><br /> +<br /> +<span>Nice refresher for <span class='inlinecode'>#shell</span> <span class='inlinecode'>#bash</span> <span class='inlinecode'>#zsh</span> redirection rules</span><br /> +<br /> +<a class='textlink' href='https://rednafi.com/misc/shell_redirection/'>rednafi.com/misc/shell_redirection/</a><br /> +<br /> +<h3 style='display: inline' id='i-think-discussing-action-items-in-incident-'>I think discussing action items in incident ...</h3><br /> +<br /> +<span>I think discussing action items in incident reviews is important. At least the obvious should be captured and noted down. It does not mean that the action items need to be fully refined in the review meeting; that would be out of scope, in my opinion.</span><br /> +<br /> +<a class='textlink' href='https://surfingcomplexity.blog/2024/09/28/why-i-dont-like-discussing-action-items-during-incident-reviews/'>surfingcomplexity.blog/2024/09/28/why-..-..-action-items-during-incident-reviews/</a><br /> +<br /> +<h3 style='display: inline' id='at-first-functional-options-add-a-bit-of-'>At first, functional options add a bit of ...</h3><br /> +<br /> +<span>At first, functional options add a bit of boilerplate, but they turn out to be quite neat, especially when you have very long parameter lists that need to be made neat and tidy. <span class='inlinecode'>#golang</span></span><br /> +<br /> +<a class='textlink' href='https://www.calhoun.io/using-functional-options-instead-of-method-chaining-in-go/'>www.calhoun.io/using-functional-options-instead-of-method-chaining-in-go/</a><br /> +<br /> +<h3 style='display: inline' id='in-the-working-with-an-sre-interview-i-have-'>In the "Working with an SRE Interview" I have ...</h3><br /> +<br /> +<span>In the "Working with an SRE Interview" I have been askd about what it's like working with an SRE! We'd covered much more in depth, but we decided not to make it too long in the final version! <span class='inlinecode'>#sre</span> <span class='inlinecode'>#interview</span></span><br /> +<br /> +<a class='textlink' href='gemini://foo.zone/gemfeed/2025-01-15-working-with-an-sre-interview.gmi'>foo.zone/gemfeed/2025-01-15-working-with-an-sre-interview.gmi (Gemini)</a><br /> +<a class='textlink' href='https://foo.zone/gemfeed/2025-01-15-working-with-an-sre-interview.html'>foo.zone/gemfeed/2025-01-15-working-with-an-sre-interview.html</a><br /> +<br /> +<h3 style='display: inline' id='in-the-working-with-an-sre-interview-i-have-'>In the "Working with an SRE Interview" I have ...</h3><br /> +<br /> +<span>In the "Working with an SRE Interview" I have been askd about what it's like working with an SRE! We'd covered much more in depth, but we decided not to make it too long in the final version! <span class='inlinecode'>#sre</span> <span class='inlinecode'>#interview</span></span><br /> +<br /> +<a class='textlink' href='gemini://foo.zone/gemfeed/2025-01-15-working-with-an-sre-interview.gmi'>foo.zone/gemfeed/2025-01-15-working-with-an-sre-interview.gmi (Gemini)</a><br /> +& |