notes

multipass.md

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+mutlipass - ubuntu vm's from canonical
+
+snap install multipass --classic (apparently this option is required and allows the snap to violate it's sandbox??)
+
+https://multipass.run/
+
+
+
+

pghero.md

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+https://github.com/ankane/pghero/blob/master/guides/Linux.md
+
+get:
+```
+wget -qO- https://dl.packager.io/srv/pghero/pghero/key | sudo apt-key add -
+sudo wget -O /etc/apt/sources.list.d/pghero.list \
+  https://dl.packager.io/srv/pghero/pghero/master/installer/ubuntu/18.04.repo
+sudo apt-get update
+sudo apt-get -y install pghero
+```
+
+Add your database. (use \ to escape special passw chars)
+```
+sudo pghero config:set DATABASE_URL=postgres://user:password@hostname:5432/dbname
+```
+
+And optional authentication.
+```
+sudo pghero config:set PGHERO_USERNAME=link
+sudo pghero config:set PGHERO_PASSWORD=hyrule
+```
+
+Start the server
+```
+sudo pghero config:set PORT=3001
+sudo pghero config:set RAILS_LOG_TO_STDOUT=disabled
+sudo pghero scale web=1
+```
+
+Confirm it’s running with:
+
+`curl -v http://localhost:3001/`

ufw.md

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+if you dont specify a protocol it allows either tcp/udp
+
+**ports** 
+```
+sudo ufw allow 22
+sudo ufw allow 22/tcp
+```
+
+**ranges**
+```
+sudo ufw allow 6000:6007/tcp
+sudo ufw allow 6000:6007/udp
+```
+
+**specific ip**
+```
+sudo ufw allow from 203.0.113.4
+sudo ufw allow from 203.0.113.4 to any port 22
+```
+
+enable firewall `suod ufw enable`
+
+
+## inquirey
+`sudo ufw status numbered`
+    pt@r710:~$ sudo ufw status numbered
+    Status: active
+
+        To                         Action      From
+        --                         ------      ----
+    [ 1] 22/tcp                     ALLOW IN    Anywhere
+    [ 2] 5432                       ALLOW IN    Anywhere
+    [ 3] 5440                       ALLOW IN    Anywhere
+    [ 4] 10000                      ALLOW IN    Anywhere
+    [ 5] 443/tcp                    ALLOW IN    Anywhere
+    [ 6] 5433/tcp                   ALLOW IN    Anywhere
+    [ 7] 22/tcp (v6)                ALLOW IN    Anywhere (v6)
+    [ 8] 5432 (v6)                  ALLOW IN    Anywhere (v6)
+    [ 9] 5440 (v6)                  ALLOW IN    Anywhere (v6)
+    [10] 10000 (v6)                 ALLOW IN    Anywhere (v6)
+    [11] 443/tcp (v6)               ALLOW IN    Anywhere (v6)
+    [12] 5433/tcp (v6)              ALLOW IN    Anywhere (v6)
+