2 files changed, 54 insertions, 0 deletions
diff --git a/roles/lxc-docker-alpine/files/1-cgroup-docker.start b/roles/lxc-docker-alpine/files/1-cgroup-docker.start
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+++ b/roles/lxc-docker-alpine/files/1-cgroup-docker.start
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+# https://forum.proxmox.com/threads/docker-daemon-running-in-alpine-container-solved.58999/
+
+# remove dirs for failed mounts
+rmdir /sys/fs/cgroup/cpu && rmdir /sys/fs/cgroup/cpuacct && rmdir /sys/fs/cgroup/net_cls && rmdir /sys/fs/cgroup/net_prio
+
+# mount missing cgroups (Ubuntu style)
+mkdir "/sys/fs/cgroup/cpu,cpuacct"
+mount -n -t cgroup -o "nodev,noexec,nosuid,cpu,cpuacct" "cpu,cpuacct" "/sys/fs/cgroup/cpu,cpuacct"
+ln -s "cpu,cpuacct" /sys/fs/cgroup/cpu
+ln -s "cpu,cpuacct" /sys/fs/cgroup/cpuacct
+
+mkdir "/sys/fs/cgroup/net_cls,net_prio"
+mount -n -t cgroup -o "nodev,noexec,nosuid,net_cls,net_prio" "net_cls,net_prio" "/sys/fs/cgroup/net_cls,net_prio"
+ln -s "net_cls,net_prio" /sys/fs/cgroup/net_cls
+ln -s "net_cls,net_prio" /sys/fs/cgroup/net_prio
+
+# mount systemd cgroup (Alpine mounts openrc, but Docker requires systemd...)
+# (based on hint at https://k9s.hatenablog.jp/entry/2019/06/16/075741)
+mkdir /sys/fs/cgroup/systemd
+mount -n -t cgroup -o none,name=systemd cgroup /sys/fs/cgroup/systemd
diff --git a/roles/lxc-docker-alpine/main.yml b/roles/lxc-docker-alpine/main.yml
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+---
+# Target: alpine3.10
+# Host: debian arch
+- name: Install Docker on Alpine LXC Container (Debian Host)
+  hosts: lxc_docker_alpine
+  tasks:
+  - name: Installing Docker
+    apk:
+      state: present
+      update_cache: yes
+      name:
+        - docker
+        - docker-py
+  - name: Ensuring Docker has been started
+    service:
+      name: docker
+      state: started
+      enabled: yes
+  - name: Copying cgroups mount script to local.d
+    copy:
+      src: 1-cgroup-docker.start
+      dest: /etc/local.d/1-cgroup-docker.start
+      mode: '0700'
+  - name: Ensuring local service has been started
+    service:
+      name: local
+      state: started
+      enabled: yes
+  - name: Running hello world test
+    shell: docker run hello-world && touch /tmp/.docker-success
+    register: output
+    args: 
+      creates: /tmp/.docker-success
+  - debug: var=output
+\ No newline at end of file