#244: Variable for setting the network limit.

docs/config/networking.md

@@ -58,3 +58,9 @@ You can also use the environment variable `LANDO_HOST_IP`.
 ```sh
 lando exec my-service -- ping "\$LANDO_HOST_IP" -c 3
 ```
+
+## Network Limits
+
+By default Docker has a limit of 32 networks. If you're running a large number of sites, you'll see a message `Lando has detected you are at Docker's network limit`, after which Lando will attempt to clean up unused networks to put you below the network limit.
+
+If you've [modified your Docker daemon](https://discussion.fedoraproject.org/t/increase-limit-of-30-docker-networks-in-a-clean-way/96622/4) to allow more networks, you can set Lando's network limit to a higher number by setting the `networkLimit` variable in [Lando's global config](./global.html).

examples/networking/README.md

@@ -22,6 +22,10 @@ cp -rf index.php lemp/index.php
 cp -rf nginx.conf lemp/nginx.conf
 cp -rf .lando.lemp.yml lemp/.lando.yml
 cd lemp && lando start
+
+# Should copy .config.yml to ~/.lando/config.yml
+cp config.yml ~/.lando/config.yml
+lando --clear
 ```
 
 ## Verification commands
@@ -63,6 +67,9 @@ lando exec appserver_nginx -- curl https://appserver.landolamp.internal
 # Should even be able to connect to a database in a different app
 cd lamp
 lando exec database -- mysql -uroot -h database.landolemp.internal -e "quit"
+
+# Should see the correct network limit
+lando config | grep "networkLimit: 64"
 ```
 
 ## Destroy tests

examples/networking/config.yml

@@ -0,0 +1 @@
+networkLimit: 64

plugins/networking/index.js

@@ -10,7 +10,7 @@ const getDockerDesktopBin = require('../../utils/get-docker-desktop-x');
  */
 const cleanNetworks = lando => lando.engine.getNetworks()
   .then(networks => {
-    if (_.size(networks) >= 32) {
+    if (_.size(networks) >= lando.config.networkLimit) {
       // Warn user about this action
       lando.log.warn('Lando has detected you are at Docker\'s network limit!');
       lando.log.warn('Give us a moment as we try to make space by cleaning up old networks...');

utils/get-config-defaults.js

@@ -31,6 +31,7 @@ const defaultConfig = options => ({
   home: os.homedir(),
   isArmed: _.includes(['arm64', 'aarch64'], process.arch),
   logLevel: 'debug',
+  networkLimit: 32,
   node: process.version,
   os: {
     type: os.type(),