commit 023b613fca02b684692cf76aff170741f0c39250
Author: Nico Schottelius <nico@nico-notebook.schottelius.org>
Date:   Thu Jan 9 11:15:47 2020 +0100

    Import dot files from the notes repo

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..58b07e8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.png
+*.pdf
+*.svg
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..9400773
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,16 @@
+all:
+	for dot in *.dot; do make $${dot%%.dot}.png; done
+	for dot in *.dot; do make $${dot%%.dot}.pdf; done
+	for dot in *.dot; do make $${dot%%.dot}.svg; done
+
+clean:
+	rm -f *.png *.pdf *.svg
+
+%.png: %.dot
+	dot -Tpng < $< > $@
+
+%.pdf: %.dot
+	dot -Tpdf < $< > $@
+
+%.svg: %.dot
+	dot -Tsvg < $< > $@
diff --git a/desktop-in-a-browser.dot b/desktop-in-a-browser.dot
new file mode 100644
index 0000000..dd17911
--- /dev/null
+++ b/desktop-in-a-browser.dot
@@ -0,0 +1,15 @@
+digraph G {
+    node [ shape=box ]
+
+    local_browser [ label="Local Browser" ];
+    desktop_ungleich [ label="ungleich Desktop\n(Guacamole)" ];
+    vm [ label="Dedicated VM" ];
+    mydesktop [ label="My Desktop in a VM" ];
+    mobile_phone [ label="My phone" ];
+
+    local_browser->desktop_ungleich->vm->mydesktop;
+    desktop_ungleich->mobile_phone [ label="2FA" ];
+
+
+
+}
diff --git a/digitalglarus.dot b/digitalglarus.dot
new file mode 100644
index 0000000..58e92aa
--- /dev/null
+++ b/digitalglarus.dot
@@ -0,0 +1,95 @@
+digraph G {
+    start [ label="Enter Digital Glarus" ]
+    quietnot [ label="Prefer People\nor quietness?" shape=diamond ]
+    interested [ label="Are you interested\nin either sustainability,\nIT, hacking\nor mountains?" shape=diamond ];
+    nothere [ label="Sorry, this place\nis not for you." shape=box ]
+
+    schwanden [ label="Digital Chalet" ]
+    diesbach [ label="Hacking Hotel" ]
+    movein [ label="Welcome to Digital Glarus" ];
+
+
+    start->interested
+    interested->quietnot [ label="Yes" ];
+    interested->nothere  [ label="No" ];
+
+    quietnot->schwanden [ label="I prefer quiet" ];
+    quietnot->diesbach [ label="I prefer people" ];
+
+    roomup [ label="Rooftop room\nwith mountain view" ];
+    roomupbig [ label="Rooftop big and bright room" ];
+    roombig [ label="Double room with lots of space" ];
+    roomcute [ label="Cute and bright room" ];
+
+    mountainviewapt [ label="Mountain view apartement" ];
+    natureviewapt [ label="Nature view apartement" ];
+    room7 [ label="Hotel Room" ];
+
+
+    studentdiscount [ label="Are you\na student?" shape=diamond ];
+    discountyes [ label="You are eligable\nfor a student discount!" ];
+
+
+    price_390 [ shape="box" label="390 CHF" ];
+    price_440 [ shape="box" label="440 CHF"];
+    price_490 [ shape="box" label="490 CHF"];
+    price_590 [ shape="box" label="590 CHF"];
+
+    schwanden->roombig [ label="Prefer more space"  ]
+    schwanden->roomupbig [ label="Prefer more space"  ]
+    schwanden->roomup [ label="Prefer pay less and smaller rooms" ]
+    schwanden->roomcute [ label="Prefer pay less and smaller rooms" ]
+
+
+    diesbach->mountainviewapt [ label="A whole apartment for myself" ];
+    diesbach->natureviewapt [ label="A whole apartment for myself" ];
+    diesbach->room7 [ label="I am fine with one big room" ];
+
+    natureviewapt->price_490;
+    mountainviewapt->price_590;
+    roombig->price_440;
+    roomup->price_390;
+    roomcute->price_390;
+    roomupbig->price_390;
+    room7->price_390;
+
+    subgraph cluster_schwanden {
+        schwanden;
+        roomup;
+        roomupbig;
+
+        roombig;
+        roomcute;
+
+    }
+
+    subgraph cluster_diesbach {
+        diesbach;
+        mountainviewapt
+        natureviewapt
+        room7;
+
+
+    }
+    subgraph cluster_prices {
+#        label="Price per month";
+
+        price_440;
+        price_590;
+        price_490;
+        price_390;
+    }
+
+    {price_440, price_590, price_390, price_490 }->studentdiscount;
+
+    studentdiscount->movein [ label="No" ];
+    studentdiscount->discountyes [ label="Yes" ];
+    discountyes->movein;
+
+
+
+    movein;
+
+
+
+}
diff --git a/djangohosting.dot b/djangohosting.dot
new file mode 100644
index 0000000..32176d6
--- /dev/null
+++ b/djangohosting.dot
@@ -0,0 +1,44 @@
+digraph G {
+    node [ shape=box, fontcolor="#ffffff", color="#40a9e3", style="filled"  ]
+#    rankdir=LR;
+
+    subgraph cluster_local {
+        editor [ label="Local editor" ];
+        git [ label="Local version control" ];
+        localweb [ label="Development webserver" ];
+    }
+
+
+    subgraph cluster_production_datacenter {
+        label="First data center";
+        subgraph cluster_production {
+            label="Production environment"
+            prodvm [ label="Production Server\nuwsgi,nginx,postgres" ];
+            repo [ label="Code repository\n(f.i. git)"];
+            monitoring [ label="Monitoring server" ];
+        }
+
+        subgraph cluster_staging {
+            label="Staging environment"
+            stagingvm[ label="Staging Server" ];
+        }
+    }
+
+    subgraph cluster_offsite {
+        label="Second data center";
+        backupvm [ label="Backup server" ];
+        monitoringmonitor [ label="Monitoring server" ];
+    }
+
+    editor->git;
+    git->repo;
+    editor->localweb;
+
+    repo->prodvm [ label="Deploy after staging" ];
+    repo->stagingvm [ label="Pre prod deployment" ];
+
+    prodvm->backupvm [ label="Daily backup" ];
+    monitoring->prodvm [ label="Verify operation\nand alert on failure" ];
+    monitoringmonitor->monitoring [ label="Monitor the monitoring service"];
+
+}
diff --git a/ip-routing.dot b/ip-routing.dot
new file mode 100644
index 0000000..43c4e88
--- /dev/null
+++ b/ip-routing.dot
@@ -0,0 +1,14 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+
+    packet [ label="Packet" ]
+    router [ label="Router" ];
+    routingtable [ label="Lookup in\nrouting table" ];
+    nexthop [ label="Next router" ];
+
+    packet->router->routingtable->nexthop;
+
+
+}
diff --git a/ipv4doublenat.dot b/ipv4doublenat.dot
new file mode 100644
index 0000000..5db5dd4
--- /dev/null
+++ b/ipv4doublenat.dot
@@ -0,0 +1,25 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+    client1 [ label="IPv4 client 1\nPrivate IP" ];
+    client2 [ label="IPv4 client 2\nPrivate IP" ];
+    clientn [ label="IPv4 client n\nPrivate IP" ];
+    nat_gw  [ label="NAT gateway\nPublic IP"  ];
+    target  [ label="IPv4 Server\nPublic IP" ];
+    nat_gw2 [ label="NAT gateway 2\nPublic IP"  ];
+    client3 [ label="IPv4 client 3\nPrivate IP" ];
+    client4 [ label="IPv4 client 4\nPrivate IP" ];
+    clientx [ label="IPv4 client x\nPrivate IP" ];
+
+    {client1, client2, clientn}->nat_gw;
+
+    nat_gw->target;
+    target->nat_gw;
+    target->nat_gw2;
+    nat_gw2->target;
+
+    nat_gw2->{client3, client4, clientx} [ dir="back" ];
+
+
+}
diff --git a/ipv4nat.dot b/ipv4nat.dot
new file mode 100644
index 0000000..93b5fd2
--- /dev/null
+++ b/ipv4nat.dot
@@ -0,0 +1,17 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+    client1 [ label="IPv4 client 1\nPrivate IP" ];
+    client2 [ label="IPv4 client 2\nPrivate IP" ];
+    clientn [ label="IPv4 client n\nPrivate IP" ];
+    nat_gw  [ label="NAT gateway\nPublic IP"  ];
+    target  [ label="IPv4 Server\nPublic IP" ];
+
+    {client1, client2, clientn}->nat_gw;
+    nat_gw->target;
+    target->nat_gw;
+
+
+
+}
diff --git a/ipv6-routing.dot b/ipv6-routing.dot
new file mode 100644
index 0000000..29b147f
--- /dev/null
+++ b/ipv6-routing.dot
@@ -0,0 +1,9 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+    v6router [ label="IPv6 only Router" ];
+
+    router1->router2 [ label="IPv6 route 1" ];
+    router1->router3 [ label="IPv6 route 2" ];
+}
diff --git a/ipv6-to-ipv4-proxy.dot b/ipv6-to-ipv4-proxy.dot
new file mode 100644
index 0000000..b6c905f
--- /dev/null
+++ b/ipv6-to-ipv4-proxy.dot
@@ -0,0 +1,19 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=TB!;
+
+    label="IPv4-to-IPv6 proxy by ungleich.ch"
+
+    proxyv4 [ label="ungleich\nIPv4-IPv6 Proxy" ];
+
+    serverv6  [ label="Your IPv6 only\nServer" ];
+
+    clientv4 [ label="IPv4 only\nclient" ];
+    clientv6 [ label="IPv6 only\nclient" ];
+
+    clientv6->serverv6 [ label="Direct IPv6 access" ];
+    clientv4->proxyv4 [ label="Connect by IPv4" ];
+    proxyv4->serverv6 [ label="Translate to IPv6" ];
+
+
+}
diff --git a/ipv6backup.dot b/ipv6backup.dot
new file mode 100644
index 0000000..6b42dd4
--- /dev/null
+++ b/ipv6backup.dot
@@ -0,0 +1,20 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+    backupserver [ label="ungleich\nIPv6 Backup" ];
+
+    server1  [ label="Server (IPv4)" ];
+    server2  [ label="Server (IPv6)" ];
+    server3  [ label="Server (Dualstack)" ];
+
+    clientv4 [ label="IPv4 client" ];
+    clientv6 [ label="IPv6 client" ];
+
+    backupserver->{server1,server2,server3}
+
+    clientv4->backupserver [ label="Not accessible" ];
+    clientv6->backupserver [ label="Accessible (can be restricted)" ];
+
+
+}
diff --git a/ipv6direct.dot b/ipv6direct.dot
new file mode 100644
index 0000000..cdf52b5
--- /dev/null
+++ b/ipv6direct.dot
@@ -0,0 +1,14 @@
+digraph G {
+    node [ shape=box ]
+#    rankdir=LR;
+
+    client1 [ label="IPv6 client 1\nPublic IP" ];
+    client2 [ label="IPv6 client 2\nPublic IP" ];
+    clientn [ label="IPv6 client n\nPublic IP" ];
+
+    client1->{client2, clientn};
+    client2->{client1, clientn};
+    clientn->{client2, client1};
+
+
+}
diff --git a/ipv6proxy.dot b/ipv6proxy.dot
new file mode 100644
index 0000000..34b2b9a
--- /dev/null
+++ b/ipv6proxy.dot
@@ -0,0 +1,55 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+    label="IPv6 proxies by ungleich.ch"
+
+
+    proxyv6 [ label="ungleich\nIPv6-IPv4 Proxy" ];
+    proxyv4 [ label="ungleich\nIPv4-IPv6 Proxy" ];
+
+    serverv4  [ label="IPv4 only\nServer" ];
+    serverv6  [ label="IPv6 only\nServer" ];
+    noipv4here [ label="No IPv4-\nhere-service" ];
+
+    clientv4 [ label="IPv4 only\nclient" ];
+    clientv6 [ label="IPv6 only\nclient" ];
+
+    clientv4->serverv4 [ label="Direct IPv4 access" ];
+    clientv6->serverv6 [ label="Direct IPv6 access" ];
+
+    clientv4->proxyv4 [ label="Connect by IPv4" ];
+    clientv6->proxyv6 [ label="Connect by IPv6" ];
+
+    proxyv6->serverv4 [ label="Translate to IPv4" ];
+    proxyv4->serverv6 [ label="Translate to IPv6" ];
+    proxyv4->noipv4here [ label="If IPv4 translation is disabled" ];
+
+
+    subgraph cluster_legacyserver {
+        label="Enable legacy IPv4 servers to be reachable by IPv6";
+        proxyv6;
+        serverv4;
+    }
+
+    subgraph cluster_v6net {
+        label="Enable legacy IPv4 clients to access IPv6 only servers";
+
+        proxyv4;
+        serverv6;
+        noipv4here;
+
+    }
+
+    subgraph cluster_clients {
+        label="Clients";
+
+        clientv4;
+        clientv6;
+
+
+    }
+
+
+
+}
diff --git a/marketing-by-doing.dot b/marketing-by-doing.dot
new file mode 100644
index 0000000..0893311
--- /dev/null
+++ b/marketing-by-doing.dot
@@ -0,0 +1,28 @@
+digraph G {
+    #    rankdir="LR";
+
+    label="Do good and talk about it // ungleich.ch"
+
+    me [ label="Me"];
+
+    plan [ label="Plan what to do" ];
+    writetwitter [ label="Write on Twitter as me" ];
+    mentionungleich [ label="Include @ungleich in message" ];
+    includepicture [ label="Include a picture" ];
+
+    doit [ label="Do the work" ];
+
+    goodpic [ label="Good picture available?" shape=diamond ];
+
+
+
+    me->plan->writetwitter->mentionungleich->goodpic;
+
+    goodpic->includepicture [ label="yes" ];
+    includepicture->doit;
+    goodpic->doit [ label="no" ];
+
+
+    doit->{plan, writetwitter};
+
+}
diff --git a/network.dot b/network.dot
new file mode 100644
index 0000000..570a933
--- /dev/null
+++ b/network.dot
@@ -0,0 +1,143 @@
+digraph G {
+    rankdir="LR";
+
+    digitalglarus;
+    hack4glarus;
+
+
+    dominique [ label="Dominique Schuwey" ];
+    stefanos [ label="Stefanos SKMP" ];
+    andi [ label="Andi not Brönnimann" ];
+    andistaub [ label="Andi Staub" ];
+    marcopanter [ label="Marco Dreads" ];
+    stefanpanter [ label="Stefan panter sysadmin" ];
+    marcuskoller [ label="Markus Koller" ];
+
+    ok200 [ label="200ok" ];
+
+
+    nico->ccc;
+
+    nico->irc;
+    nico->hszt;
+    nico->panter;
+    nico->swinog;
+
+    nico->{chopenevent, eth, localch, netstream, ungleich};
+    nico->{hack4glarus, digitalglarus};
+    nico->{impacthub};
+    nico->ungleichmarketing;
+
+    nico->{benni,tobiaskiefer,marcusprzyklink,miriwagner,juliahempel};
+
+    benni->maren;
+
+
+    alain->{voicerepublic,zentemple,ok200,monikabieri};
+    beat->{beatseltern, beatsbruder, johanna, leutevonschwändi};
+
+    donaldkossmann->teralytics;
+    fritzpechal->evapechal;
+
+    gabibaechlin->{rotary,hermanmathis};
+    giovanniserafini->adrianmathyskrüttli;
+
+    heinzhuerzeler->rolfhürlimann;
+
+    hpk->{jerry, richidubs, viviankessler, steffidubs, estherdubs, richardkeller, jacqueline, sabrinanaef, konrad, juanito, fridolinwalcher};
+
+    marcauer->mathiasauer;
+
+    hanspeterlegler->kurtsuess;
+    kurtsuess->tbgs;
+    tbgs->{kilianbäbler, michaeltrachsler};
+
+
+    mikezweifel->makersimzigerschlitz;
+    michelle->panter;
+    phil->ok200;
+    stefanos->chrysa;
+    stefanwolf->cabaretvoltaire;
+
+    steven->carbondelta;
+    sanghee->eunwoo;
+    sanghee->heinzhuerzeler;
+
+    eunwoo->dani;
+    dani->eunwoo;
+
+    diechance->{nadineglettig,rolandzweifel,samuelhailu};
+
+
+    ccc;
+    ccc->ccczh;
+    ccczh->hernani;
+
+    ccc->reyk;
+
+    irc;
+    irc->doublep;
+
+    swinog;
+    swinog->{claudio,patrickgloor};
+
+    digitalglarus;
+    digitalglarus->{marvin,rob,styli,marina,merry,julian};
+    digitalglarus->{hpk,hansjuerghess, hanspeterlegler, hanspetersuess, gabibaechlin,fritzpechal};
+    digitalglarus->{alexrömer, nüglarus, mikezweifel, diechance,roomrenting};
+    digitalglarus->{christianzweifel,larazweifel,kasparmarti};
+
+
+
+    hack4glarus;
+    hack4glarus->{evilham,balazs,freebsdjohannes,kankan,manfredfrommichael,tilobosshard,vaida,danieltuering};
+    hack4glarus->{janselinga,martinselinga,michelle,konimarti};
+
+
+    adrianmathyskrüttli->helsana;
+
+    nüglarus;
+    nüglarus->{robibalmer, rolfluchsinger, patrickgallati};
+
+
+    panter;
+    panter->{stefanos,dominique,beat,alain,jorgo,phil,marcopanter,marcuskoller};
+    panter->{andistaub,stefanpanter,simonhuerlimann,davehuerlimann,referenceimage,amanda,mauro,tomas};
+    panter->{martinpanter};
+
+
+    referenceimage->ungleich;
+
+    chopenevent->eichi;
+    eichi->{ruag,tatjana};
+    ruag->dominiqueroux;
+
+    roomrenting->{erickönen, emilsomething, thomasberger};
+
+    impacthub->workspace2go;
+
+
+    hszt->{andi,dani,linda,giovanniserafini,c1audio};
+
+    eth->{steven,kamila,swaneet,max,lili,giovanniserafini,donaldkossmann,xtaran};
+    eth->{stefanwolf,sarahplocher,tobiasbühler,laurentvanbever,mothyroscoe,adrianperrig};
+
+    localch->nadinefaeh->pascalfaeh->faehundfaeh;
+    localch->richardrasu;
+
+    netstream->{alexiscaceda, dominikmeister, dominikbreitenmoser,esthergysin};
+
+    esthergysin->ungleich;
+
+    ungleich->{davehuerlimann, marcauer, konimarti,kasparmarti};
+
+    ungleichmarketing;
+    ungleichmarketing->{airat, hpk};
+
+
+    voicerepublic;
+    voicerepublic->patrickfrank;
+
+    zentemple->{marcelredding,bettina};
+
+}
diff --git a/nicos-christmas-flow.dot b/nicos-christmas-flow.dot
new file mode 100644
index 0000000..75bc0a2
--- /dev/null
+++ b/nicos-christmas-flow.dot
@@ -0,0 +1,35 @@
+digraph G {
+    node [ shape=box ]
+#    rankdir=LR;
+
+    label="Nico's Christmas shopping flow (2019)"
+
+    start [ label="Start" ];
+    needpresents [ label="Do I want to buy presents?" ];
+    stayhome [ label="All good. Let's do something else." ];
+#    lookforpresents [ label="Let's look for presents!" ];
+    isitdigital [ label="Is the present digital?" ];
+    runsopensource [ label="Does it run Open Source?" ];
+    usesnet [ label="Does it connect to the network?" ];
+    supportsv6 [ label="Does it support IPv6?" ];
+    buyit [ label="Ok, let's buy it!" ];
+    notgood [ label="Don't buy, this is trouble" ];
+#    isvirtual [ label="Does a VM/VPN work?" ];
+
+
+    start->needpresents;
+    needpresents->stayhome [ label="No" ];
+    needpresents->isitdigital [ label="Yes" ];
+
+    isitdigital->runsopensource [ label="Yes" ];
+    isitdigital->buyit [ label="No" ];
+
+    runsopensource->notgood [ label="No" ];
+    runsopensource->usesnet [ label="Yes" ];
+    usesnet->buyit [ label="No" ];
+    usesnet->supportsv6 [ label="Yes" ];
+    supportsv6->notgood [ label="No" ];
+    supportsv6->buyit [ label="Yes" ];
+#    supportsv6->isvirtual [ label="Yes" ];
+
+}
diff --git a/nicosinfra.dot b/nicosinfra.dot
new file mode 100644
index 0000000..d693eaf
--- /dev/null
+++ b/nicosinfra.dot
@@ -0,0 +1,16 @@
+graph G {
+    node [ shape=box ]
+#    rankdir=LR;
+    label="Nico's notebooks"
+
+    internet [ label="IPv6 Internet" shape="ellipse" ];
+
+    freiheit [ label="freiheit\n(Schwanden)\nfreiheit.place5.ungleich.ch" ];
+    manager [ label="manager\n(Luchsingen)\nmanager.place7.ungleich.ch" ];
+    diamond [ label="diamond\n(on the road)\ndiamond.place7.ungleich.ch\nnico.plays.ipv6.games" ];
+    line [
+    label="line\n(Linthal\ndiamond.place7.ungleich.ch\nnico.ungleich.cloud" ];
+
+    internet--{freiheit,manager,diamond,line}
+
+}
diff --git a/vm-infrastructure-dcl.dot b/vm-infrastructure-dcl.dot
new file mode 100644
index 0000000..0a8fb85
--- /dev/null
+++ b/vm-infrastructure-dcl.dot
@@ -0,0 +1,11 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+
+    VMs->{VMHost1,VMHost2,VMHostN}
+    {VMHost1,VMHost2,VMHostN}->CephCluster;
+
+    CephCluster->{Ceph1,Ceph2,CephN}
+
+}
diff --git a/vm-infrastructure-multi-dc-backup.dot b/vm-infrastructure-multi-dc-backup.dot
new file mode 100644
index 0000000..3cf9d4d
--- /dev/null
+++ b/vm-infrastructure-multi-dc-backup.dot
@@ -0,0 +1,26 @@
+digraph G {
+    node [ shape=box ]
+    rankdir=LR;
+
+
+    subgraph cluster_rz1 {
+
+    VMs->{VMHost1,VMHost2,VMHostN}
+    {VMHost1,VMHost2,VMHostN}->CephCluster;
+
+    CephCluster->{Ceph1,Ceph2,CephN}
+
+    }
+
+    subgraph cluster_rz2 {
+
+    VMs2->{VMHost21,VMHost22,VMHost2N}
+    {VMHost21,VMHost22,VMHost2N}->CephCluster2;
+
+    CephCluster2->{Ceph21,Ceph22,Ceph2N}
+
+    }
+
+    CephCluster->CephCluster2 [ label="Backup/Mirror" ];
+
+}