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---
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title: "Configure Nginx 🧩"
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title: "Setting up a NGINX configuration 🧩"
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date: 2021-10-31T15:08:33+01:00
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draft: false
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toc: false
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images:
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tags:
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- untagged
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- website
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- config
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- nginx
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---
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This is a test
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```bash
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nginx
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├── conf.d
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│ ├── hugo.conf
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│ ├── leene.robots
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│ ├── leene.ssl
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│ └── ...
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├── nginx.conf
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├── sites-available
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│ ├── lieuwe
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│ └── ...
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├── sites-enabled
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│ ├── 0root
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│ ├── lieuwe -> ../sites-available/lieuwe
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│ └── ...
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├── nginx.conf
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└── ...
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```
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@ -17,12 +17,12 @@ services require.
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| Name | Description
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| ----------------------------------------------- | -----------------------
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| **A** Address record | physical IPv4 address associated with this domain
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| **CNAME** Canonical name record | Alias name for A record name. This is generally for subdomains (i.e. other.domain.xyz as alias for domain.xyz both served the same machine)
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| **CAA** Certification Authority Authorization | DNS Certification Authority Authorization, constraining acceptable CAs for a host/domain.
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| **DS** Delegation signer | The record used to identify the DNSSEC signing key of a delegated zone
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| **MX** Mail exchange record | Maps a domain name to a list of message transfer agents for that domain
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| **TXT** Text record | Carries machine-readable data, such as specified by RFC 1464, opportunistic encryption, Sender Policy Framework, DKIM, DMARC, DNS-SD, etc.
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| `A` Address record | // physical IPv4 address associated with this domain
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| `CNAME` Canonical name record | Alias name for A record name. This is generally for subdomains (i.e. other.domain.xyz as alias for domain.xyz both served the same machine)
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| `CAA` Certification Authority Authorization | DNS Certification Authority Authorization, constraining acceptable CAs for a host/domain.
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| `DS` Delegation signer | The record used to identify the DNSSEC signing key of a delegated zone
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| `MX` Mail exchange record | Maps a domain name to a list of message transfer agents for that domain
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| `TXT` Text record | Carries machine-readable data, such as specified by RFC 1464, opportunistic encryption, Sender Policy Framework, DKIM, DMARC, DNS-SD, etc.
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The essential records for web services are the A and CNAME records which enable
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correct name look up when outside you private network. Nowadays SSL should be
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@ -52,3 +52,19 @@ which yields a long public key. You need to break this key up into multiple
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strings which the `openkdim` tool may or may not do by default as there is a
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maximum character length for each TXT entry element. As long as no semi-colons
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are inserted this should just work as expected.
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### Debugging DNS Issues
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Often is things don't go as expected. Especially with DNS related issues since
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caching prevents real-time corrections.
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```bash
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nslookup leene.dev
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dig $DOMAIN_NAME $RECORD_NAME
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```
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Two of the better tools here is nslookup and dig. The first will generally
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tell you how and where you name lookup is being resolved. Sometimes this
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may not be as expected so its always good to double check. The second is
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literally a DNS utility that lets you query specific records. For example
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testing your openDKIM setup relies on the DNS record correctly being set.
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@ -120,3 +120,49 @@ classDiagram
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PyViewer <-- ArchiveLoader
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PyViewer <-- ApplicationWindow
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```
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### Live viewer command line script
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The bash script below uses feh, an X11 image viewing utility, inotify-tools
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and ImageMagic from the command line to provide a live view of a mmd file
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that is built as changes are made to the file.
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```bash
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#!/usr/bin/env bash
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function usage() {
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usage_str="$(basename "${BASH_SOURCE[0]}") IN_FILE OUT_FILE"
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usage_str+="[ --config=<Config File> | -c <Config File> ] "
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usage_str+="[ -h | --help ]"
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cat <<<"
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Usage:
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$usage_str
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Options:
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-c | --config: Specify CSS style for Mermaid diagram
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Default: None
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-h | --help: Displays this menu
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"
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exit 1
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}
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function main() {
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local ARGS=("-i" "$1" "-o" "$2")
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case "$1" in
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-c) ARGS=("-i" "$3" "-o" "$4" "-c" "$2");;
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--config=*) ARGS=("-i" "$2" "-o" "$3" "-c" "${1#*=}");;
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-h|--help) usage;;
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-*) echo "Invalid Option: $1"; usage ;;
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esac
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# echo "IN:${ARGS[1]} OUT:${ARGS[3]}"
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mmdc ${ARGS[@]} &> /dev/null
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mogrify -trim "${ARGS[3]}"
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feh --reload 2 "${ARGS[3]}" &
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sleep 0.1
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inotifywait -qm --event modify --format '%w' "${ARGS[1]}" | \
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( mmdc ${ARGS[@]} ; mogrify -trim "${ARGS[3]}" ) &> /dev/null
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}
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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if [ "$#" -lt 2 ] || [ "$#" -gt 4 ] ; then
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usage
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fi
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main "$@"
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fi
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```
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@ -10,9 +10,8 @@ tags:
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This is a list of topics that I may include at some point in time:
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1. SSL and NGINX setup guide
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2. Postfix setup guide
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3. Danbooru setup guide
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4. pyside notes from pyviewer project
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5. other fun stuff
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3. Pyside notes from pyviewer project
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4. Other fun stuff
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I also want to share some of the IC design work building up a technical profile:
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1. Chip gallery
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@ -10,8 +10,22 @@ tags:
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- verification
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---
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Netlisting issues can be some of the more frustrating aspects of circuit design
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tool chains primarily because its it all text based and very old fashioned.
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The Cadence tools for example have various command-line utilities but
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documentation is underwhelming to say the least. Quite often though they are
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inevitable when combining different tools, design flows, or handling someone
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else's IP. In order to cope with the usual inconsistencies I rely on the
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scripts below to pre and post process SPICE netlists.
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## Port Order Reshuffling
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### Port Order Reshuffling
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The default netlister and spice simulators usually connects sub component
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terminals in terms of the order in which they are defined in the spice `.SUBCKT`
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definition. Conflict arises however since IP vendors on the other hand tend
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to sort the port order in someway in the spice netlist but the Cadence
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symbol/schematic definition will usually disregard this order causing
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connectivity issues later.
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```bash
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function getSortedOrder() {
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@ -28,6 +42,19 @@ function getSortedOrder() {
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fi
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echo "${SOURCE[@]:0:2} ${SORTED[@]}"
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}
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```
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Cadence tools will prefer alphabetical ordering. The bash script above will
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replicate this sorting behaviour if you pass it a `.SUBCKT` definition string.
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The purpose here is that when you are given a netlist from a vendor you can
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prepare an internal version that already sorts the ports alphabetically.
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In order to do this in terms of editing a file however you can use the script
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below which is called as: `updatePortOrder $CKT_NAME $FILE_NAME`. This will
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look for the definition given a `CKT_NAME` in the spice file and create a
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new file `CKT_NAME.cdl` in the current directory.
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```bash
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function updatePortOrder() {
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local TARGET="$1"
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local CDL_FILE="$2"
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@ -43,6 +70,10 @@ function updatePortOrder() {
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}
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```
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The second script however relies on some awk-based spice parsing calls to
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properly find and replace the relevant sections in the netlist. `catch.awk`
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simple finds the `SUBCKT` statement relevant and prints it to stdout.
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```awk
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BEGIN{ hold = ""; IGNORECASE = 1 }
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NF {
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@ -53,6 +84,9 @@ NF {
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$0 ~ target { hold = $0 };
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```
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Then `release.awk` helps to insert the definition back into the netlist with
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the option to swap out any delimiters in the port names.
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```awk
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BEGIN{output="";hold="";IGNORECASE=1};
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NF{if($1!="+")hold=""}
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@ -67,3 +101,117 @@ $0~target{
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print output}
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NF{if(hold=="")print $0}
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```
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### Netlisting Environment:
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```skill
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;; spice.env
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simStopList = '("auCdl")
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simViewList = '("auCdl" "schematic")
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auCdlDefNetlistProc = "ansCdlSubcktCall"
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globalGndSig = ""
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globalPowerSig = ""
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shrinkFACTOR = 0
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checkScale = "meter"
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preserveDIO = 'nil
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checkDIOAREA = 'nil
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checkDIOPERI = 'nil
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preserveCAP = 'nil
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checkCAPVAL = 'nil
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checkCAPAREA = 'nil
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checkCAPPERI = 'nil
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preserveRES = 'nil
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checkRESVAL = 'nil
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checkRESSIZE ='nil
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resistorModel = ""
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shortRES = 2000
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simNetlistHier = 't
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pinMAP = 'nil
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displayPININFO = 't
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checkLDD = 'nil
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connects = ""
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setEQUIV = ""
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cdlSimViewList = '("auCdl" "schematic")
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cdlSimStopList = '("auCdl")
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simSimulator = "auCdl"
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simRunDir = "$RUN_DIR"
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hnlNetlistFileName = "$CELL.src.net"
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simViewName = "$SCH_VIEW"
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simCellName = "$CELL"
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simLibName = "$LIBRARY"
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incFILE = "$RUN_DIR/source.added"
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auCdlNoForwardSlash = t
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```
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```skill
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;; simrc
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hnlSetBusDirectionDescending = 't
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simVerilogGenerateSingleNetlistFile = 't
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hnlVerilogPrintSpecparam = nil
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simVerilogNetlistExplicit = 't
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simPrintInhConnAttributes = t
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hnlInhConnUseDefSigName = t
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```
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```skill
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;; verilog.env
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simLibName = "$LIBRARY"
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simCellName = "$CELL"
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simViewName = "$SCH_VIEW"
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simSimulator = "verilog"
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simNotIncremental = nil
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simReNetlistAll = 't
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simNetlistHier = t
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simVerilogLaiLmsiNetlisting = 'nil
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verilogSimViewList = '("behavioral" "functional" "system" "verilog" "schematic" "symbol")
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simVerilogAutoNetlisting = 't
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simVerilogTestFixtureFlag = 't
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simVerilogTestFixtureTemplate = "All"
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simVerilogNetlistExplicit = 't
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hnlVerilogTermSyncUp = "mergeAll"
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simVerilogFlattenBuses = 'nil
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vtoolsUseUpperCaseFlag = 'nil
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hnlVerilogCreatePM = 'nil
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simVerilogTopLevelModuleName = "verilog_$CELL.top"
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simHierarchyPrefix = "verilog_$CELL.top"
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simNCVerilogHierPrefix = "verilog_$CELL:top"
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verilogSimStopList = '("verilog" "symbol")
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simVerilogPwrNetList = '("$PWRLIST")
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simVerilogGndNetList = '("$GNDLIST")
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vtoolsifForceReNetlisting = 'nil
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simVerilogLibNames = '("$LIBLIST")
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vlogifInternalTestFixtureFlag = 'nil
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simVerilogBusJustificationStr = "U"
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simVerilogTestFixtureTemplate = "All"
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simVerilogDropPortRange = 't
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simVerilogHandleUseLib = 'nil
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simVerilogHandleAliasPort = 't
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simVerilogPrintStimulusNameMappingTable = 'nil
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simVerilogProcessNullPorts = 'nil
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simVerilogIncrementalNetlistConfigList = 'nil
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hnlVerilogNetlistStopCellImplicit = 'nil
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simVerilogOverWriteSchTimeScale = 'nil
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vlogifCompatibilityMode = "4.2"
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simVerilogHandleSwitchRCData = 'nil
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vlogifUseAssignsForAlias = 't
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vlogifDeclareGlobalNetLocal = 'nil
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vlogifSkipTimingInfo = 'nil
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simVerilogEnableEscapeNameMapping = 'nil
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simVerilogStopAfterCompilation = 't
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simVerilogVhdlImport = 'nil
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simVerilogTopCellCounter = 0
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hnlSupportIterInst = 't
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hnlNetlistFileName = "$CELL.v"
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hnlSetBusDirectionDescending = 't
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simVerilogGenerateSingleNetlistFile = 't
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hnlVerilogPrintSpecparam = 'nil
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simPrintInhConnAttributes = 't
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hnlInhConnUseDefSigName = 't
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```
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### Property Based Removal
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```
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hnlHonorLxRemoveDevice = 't
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hnlUserShortCVList = list( list("analogLib" "res") list("tsmcN40" "rnpolywo") )
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```
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