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Links Microservices: Health monitoring

Links 30 Seconds of CSS A Complete Guide to Flexbox

Notes for purchasing a new laptop in 2018 Need to have ~13-14" Computer with ~13" screen 128+ GiB SSD 8+ GiB RAM Around 1.6GHz dual-core Intel Core i5 or better Modern bluetooth Modern Wi-Fi (802.11ac) 1+ USB slot 10+ hours of use At the very least, full HD resolution Nice to have No bezels 256+ GiB SSD 3.5mm headphone jack Some kind of graphics card No fan Backlit keys Possible buys TBD

I have docker container which wants access to a drive on its host, which in turn is mounted with cifs from a server on the local network. If you mount it normally with a -v host:container and try to access it from the container, you get an access denied. If you try the old classic SE-Linux-friendly -v host:container:Z, it will look like this from the container: root@c3ada26b1d90:/# l /data/* /data/backup: ls: cannot access '/data/backup/config.json': Permission denied 27177a66e938a02ae784c0bc9ccd74751a32c00f4fcaee22ef1d78894c70553a-stdin| config.json init-stdin| 27177a66e938a02ae784c0bc9ccd74751a32c00f4fcaee22ef1d78894c70553a-stdout| init-stderr| init-stdout| To make it work, you have to change the SE-Linux-type from cifs_t to something more container-y. In your /etc/fstab, you can mount it like this: ...

Sometimes your install a distro and it refuses to take up all available space. 1. Find out how much space we got to play with. $ sudo vgdisplay --- Volume group --- VG Name fedora System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size <49.00 GiB PE Size 4.00 MiB Total PE 12543 Alloc PE / Size 4860 / 18.98 GiB Free PE / Size 7683 / 30.01 GiB VG UUID cCXkBg-Z8Or-jmmi-avaK-91VW-v3cF-CmhiKD 2. Resize your logical volume of choice to soak up the space $ sudo lvresize --size +30.01G /dev/fedora/root Rounding size to boundary between physical extents: 30.01 GiB. Size of logical volume fedora/root changed from 15.00 GiB (3840 extents) to 45.01 GiB (11523 extents). Logical volume fedora/root successfully resized. 3. Grow your partition XFS Example: ...

These are my installation notes for creating a lightweight linux desktop environment from scratch, which contains only the most necessary applications. I’ll probably update it slightly in the future, when I realize I have missed some application. It will contain both openbox and dwm, as I’m always torn between using a tiling versus a floating window manager. Mostly I prefer tiling ones, but with some applications, they simply don’t work well. ...

Notes for buying new headphones in 2018 Requirements Over-ear headphones Good (great?) sound Possible to wear daily for 6-8 hours Wireless (Nice-to-have) Noice canceling Potential purchases Sony WH-1000XM2 / rting Weight: 275 g Battery Life: 30h Has 3.5mm: Yes Price range: 3.2-4k SEK Wireless: Yes Noice canceling: Yes Sennheiser PXC 550 / rting Weight: 227 g Battery Life: 30h Has 3.5mm: Yes Price range: 2.8-3.9k SEK Wireless: Yes Noice canceling: Yes Bose QuietComfort 35 / rting Weight: 236 g Battery Life: 20h Has 3.5mm: Yes Price range: 3.7-4k SEK Wireless: Yes Noice canceling: Yes Bang & Olufsen Beoplay H9 / rting Weight: 295 g Battery Life: 21h Has 3.5mm: Yes Price range: 3.9-4.8k SEK Wireless: Yes Noice canceling: Yes

Some collected documentation for building a generic page in Django2 (python3) Python language Python3 libraries Framework Django documentation Django documentation - topics Deployment Django and nginx Django and uWSGI Security in Django Performance and Optimization in Django Deployment checklist Example pairing Django/nginx

sudo -u postgres createuser USER sudo -u postgres createdb DB sudo -u postgres psql alter user USER with encrypted password 'PASS'; alter database DB owner to USER;

Some collected documentation for building an API backend in Rocket (rust) Rust language Rust by Example Framework Rocket Documentation Docker Github Page Libraries Chrono - Time and Date Diesel - ORM

Some collected documentation for developing in luminous. Clojure docs. Language. Luminous web. Framework. Sweet/Compojure API. Luminous building block for API. Compojure. Building block for Sweet. Swagger. Building block for Sweet. Ring. Building block for Compojure. Schema. Data types and validation. Libraries Buddy-hashers. For hashing, mostly passwords. Guides Restful Clojure

When I get some spare time I would like to make rsyslogd write its contents to database, and parse it through a web interface. In the meantime I’ll just collect some guides here. Writing syslog messages to MySQL, PostgreSQL or any other supported Database Handling a massive syslog database insert rate with Rsyslog Elasticsearch Elasticsearch - Logstash Elasticsearch - Kibana

FiraCode Supports iTerm2 & IntelliJ Has ligatures

for i in {0..255} ; do printf "\x1b[48;5;%sm%3d\e[0m " "$i" "$i" if (( i == 15 )) || (( i > 15 )) && (( (i-15) % 6 == 0 )); then printf "\n"; fi done

Extending the certificate to also cover www.iix.se sudo certbot certonly --standalone -d iix.se,www.iix.se,monit.iix.se,test.iix.se Sat Nov 04 11:14 W44 Saving debug log to /var/log/letsencrypt/letsencrypt.log Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org ------------------------------------------------------------------------------- You have an existing certificate that contains a portion of the domains you requested (ref: /etc/letsencrypt/renewal/iix.se.conf) It contains these names: iix.se, monit.iix.se, test.iix.se You requested these names for the new certificate: iix.se, www.iix.se, monit.iix.se, test.iix.se. Do you want to expand and replace this existing certificate with the new certificate? ------------------------------------------------------------------------------- (E)xpand/(C)ancel: e Renewing an existing certificate Performing the following challenges: tls-sni-01 challenge for iix.se tls-sni-01 challenge for www.iix.se tls-sni-01 challenge for monit.iix.se tls-sni-01 challenge for test.iix.se /usr/lib/python2.7/dist-packages/OpenSSL/rand.py:58: UserWarning: implicit cast from 'char *' to a different pointer type: will be forbidden in the future (check that the types are as you expect; use an explicit ffi.cast() if they are correct) result_code = _lib.RAND_bytes(result_buffer, num_bytes) Waiting for verification... Cleaning up challenges Generating key (2048 bits): /etc/letsencrypt/keys/0009_key-certbot.pem Creating CSR: /etc/letsencrypt/csr/0009_csr-certbot.pem IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/iix.se/fullchain.pem. Your cert will expire on 2018-02-02. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run "certbot renew" - If you like Certbot, please consider supporting our work by: Donating to ISRG / Let's Encrypt: https://letsencrypt.org/donate Donating to EFF: https://eff.org/donate-le