CI uses self-hosted runners. (#210)

CI uses new self-hosted runners.

Author: gz

.github/workflows/coverage.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   check:
     name: Coverage
-    runs-on: ubuntu-latest
+    runs-on: [self-hosted, Linux, skylake-2x]
 
     steps:
       - name: Checkout

.github/workflows/main.yml

@@ -31,7 +31,7 @@ jobs:
           - {
               rust: nightly,
               target: x86_64-unknown-linux-gnu,
-              os: ubuntu-latest,
+              os: [self-hosted, Linux, skylake-2x],
             }
           - { rust: nightly, target: x86_64-apple-darwin, os: macos-latest }
           - {
@@ -147,12 +147,12 @@ jobs:
       # ```
       # but no, instead we have to do whatever the hell this is
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [skylake-2x, macos-latest]
         sanitizer: [address, thread, memory, leak]
         target: [x86_64-unknown-linux-gnu] # x86_64-apple-darwin
         exclude:
           # Exclude ubuntu runs with darwin targets
-          - { os: ubuntu-latest, target: x86_64-apple-darwin }
+          - { os: skylake-2x, target: x86_64-apple-darwin }
           # Exclude macos runs with linux targets
           - { os: macos-latest, target: x86_64-unknown-linux-gnu }
           # Exclude darwin runs with memory sanitizers since

doc/self_hosted_ci_config.md

@@ -0,0 +1,68 @@
+# CI self-hosted runners
+
+Steps on how to set-up and configure a Ubuntu 22.04 Linux self-hosted CI runner
+machine.
+
+## Configuration
+
+```bash
+sudo apt-get install libssl-dev zsh build-essential pkg-config git gcc clang libclang-dev
+sudo useradd github-runner -m -s /bin/zsh
+```
+
+Add sudo capability for github-runner:
+
+```bash
+sudo visudo
+# github-runner  ALL=(ALL) NOPASSWD: ALL
+```
+
+Login and install rust:
+
+```bash
+sudo su github-runner
+cd $HOME
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+```
+
+Other than that, follow the steps listed under Settings -> Actions -> Runner -> Add runner:
+
+```
+<< steps from Web-UI >>
+```
+
+## Starting the runner
+
+Finally, launch the runner:
+
+```bash
+cd $HOME/actions-runner
+source $HOME/.cargo/env
+./run.sh
+```
+
+## Starting the runner as systemd service
+
+```bash
+cd $HOME/actions-runner
+sudo ./svc.sh install
+sudo ./svc.sh start
+```
+
+Check the runner status with:
+
+```bash
+sudo ./svc.sh status
+```
+
+## Stopping the runner
+
+```bash
+sudo ./svc.sh stop
+```
+
+Uninstall the service with:
+
+```bash
+sudo ./svc.sh uninstall
+```