playbook: Add upgrade-river

playbook/roles/upgrade-river/meta/main.yml

+---
+dependencies:
+  - { role: package, package_name: fdisk, package_state: latest }
+  - { role: package, package_name: pip, package_state: latest }

playbook/roles/upgrade-river/tasks/main.yml

+  - name: Install networkcache client
+    shell: pip install slapos.libnetworkcache
+
+  - name: Get target available kernel version
+    shell: "apt-cache policy linux-image-amd64 | grep Candidate | awk '{print $2}'"
+    register: target_kernel_version
+
+  - name: Convert kernel version in list format
+    shell: "echo {{target_kernel_version.stdout}} > /root/debug; python3 -c 'import sys; print(list(map(int, sys.argv[1].split(\"+\")[0].split(\"-\")[0].split(\".\"))))' {{target_kernel_version.stdout}}"
+    register: kernel_version_list_format
+
+  - name: Get EFI partition mount point
+    shell: fdisk -l | grep "EFI System" | awk '{print $1}'
+    register: efi_partition_mount_point
+
+  - name: Create image directory (if it does not exist)
+    shell: mkdir -p /boot/efi/EFI/Linux/
+
+  - name: Downlaod new initramfs image
+    shell: networkcache-download --config /etc/opt/slapos/slapos.cfg --id river "kernel-version=={{kernel_version_list_format.stdout}}" timestamp:max > /boot/efi/EFI/Linux/{{image_name}}
+
+  - name: Delete old boot option
+    shell: efibootmgr -b {{default_bootnum}} -B || true
+
+  - name: Set new boot option
+    shell: efibootmgr -b {{default_bootnum}} --create --disk {{efi_partition_mount_point.stdout}} --label "river" --loader EFI/Linux/{{image_name}}

playbook/roles/upgrade-river/vars/main.yml

+default_bootnum: 100
+image_name: river

playbook/upgrade-river.yml

+# This is part of the OCEAN project.
+# The goal of this is to download the right initramfs image from shacache
+# when the kernel is upgraded.
+
+- name: a play that runs entirely on the ansible host
+  hosts: 127.0.0.1
+  connection: local
+
+  roles:
+    - upgrade-river