chore: Add solution for Docker problems

coder · khorne3 · Jun 15, 2021 · May 24, 2021 · May 25, 2021 · Jun 14, 2021
commit 520f7070e37adecbb099ef3afb5b981e9b1a13a8
diff --git a/guides/troubleshooting/docker-problems.md b/guides/troubleshooting/docker-problems.md
@@ -0,0 +1,19 @@
+---
+title: Docker problems
+description: Learn how to resolve issues related to Docker inside Coder workspaces.
+---
+
+The kernel allocates a system key for each container created. When lots of developers
+are sharing the same instance, limits can be hit.
+
+> docker: Error response from daemon: OCI runtime create failed:
+container_linux.go:370: starting container process caused:
+process_linux.go:459: container init caused: join session keyring:
+create session key: disk quota exceeded: unknown.
+
+You can use a DaemonSet to apply the following values to increase the limits:
+
+```
+sudo sysctl -w kernel.keys.maxkeys=20000
+sudo sysctl -w kernel.keys.maxbytes=400000
+```
diff --git a/manifest.json b/manifest.json
@@ -354,6 +354,9 @@
           "children": [
             {
               "path": "./guides/troubleshooting/inotify-watch-limits.md"
+            },
+            {
+              "path": "./guides/troubleshooting/docker-problems.md"
             }
           ]
         }
-Original file line number
+Diff line change
@@ Expand Up / @@ -354,6 +354,9 @@ @@
               "children": [
                 {
                   "path": "./guides/troubleshooting/inotify-watch-limits.md"
+                },
+                {
+                  "path": "./guides/troubleshooting/docker-problems.md"
                 }
               ]
             }
@@ Expand Down @@