Lab7

.github/workflows/github-actions-demo.yml

@@ -0,0 +1,39 @@
+name: GitHub Actions Demo
+run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
+on: 
+  push:
+  workflow_dispatch:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Run a one-line script
+      run: echo "Hello, GitHub Actions!"
+
+    - name: Gather Basic System Info
+      run: |
+        echo "=== UNAME ==="
+        uname -a
+        echo "=== DISK SPACE ==="
+        df -h
+        echo "=== MEMORY USAGE ==="
+        free -h
+        echo "=== UPTIME ==="
+        uptime
+
+    - name: Gather Detailed Runner Info
+      run: |
+        echo "=== CPU Info ==="
+        lscpu || cat /proc/cpuinfo
+        echo "=== Memory Info ==="
+        cat /proc/meminfo | head -n 10
+        echo "=== OS Release Info ==="
+        cat /etc/os-release
+        echo "=== Runner Environment ==="
+        echo "Runner OS: $RUNNER_OS"
+        echo "Runner Arch: $RUNNER_ARCH"
+        echo "Runner Temp: $RUNNER_TEMP"
+        echo "Runner Workspace: $GITHUB_WORKSPACE"

submission7.md

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+## LAB 7
+Nikita Yaneev n.yaneev@innopolis.unversity
+
+### Task 1
+
+1
+
+**Input** 
+
+```
+mkdir gitops-lab && cd gitops-lab
+git init
+```
+
+2.
+
+**Input:** 
+
+```sh
+echo "version: 1.0" > desired-state.txt
+git add . && git commit -m "Initial state"
+```
+
+**Output:**
+
+```bash
+sumnios@Nikita:~/gitops-lab$ echo "version: 1.0" > desired-state.txt
+sumnios@Nikita:~/gitops-lab$ git add . && git commit -m "Initial state"
+[master (root-commit) 6e61dbe] Initial state
+ 1 file changed, 1 insertion(+)
+ create mode 100644 desired-state.txt
+```
+
+3. 
+
+**Input:** 
+
+```sh
+cp desired-state.txt current-state.txt
+```
+
+4. 
+
+**Input:**
+
+```sh
+sumnios@Nikita:~/gitops-lab$ touch reconcile.sh
+sumnios@Nikita:~/gitops-lab$ vi reconcile.sh
+```
+
+
+**Code in reconcile:** 
+```sh
+DESIRED=$(cat desired-state.txt)
+CURRENT=$(cat current-state.txt)
+
+if [ "$DESIRED" != "$CURRENT" ]; then
+echo "$(date) - DRIFT DETECTED! Reconciling..."
+cp desired-state.txt current-state.txt
+fi
+```
+
+
+5.
+
+**Input:**
+
+```sh
+echo "version: 2.0" > current-state.txt
+```
+
+6. 
+**Input:**
+
+```sh
+chmod +x reconcile.sh
+./reconcile.sh
+```
+
+**Output:**
+
+```sh
+sumnios@Nikita:~/gitops-lab$ chmod +x reconcile.sh
+sumnios@Nikita:~/gitops-lab$ ./reconcile.sh
+Wed Jul  9 17:56:45 MSK 2025 - DRIFT DETECTED! Reconciling...
+```
+
+7.
+
+**Input:**
+
+```sh
+watch -n 5 ./reconcile.sh
+```
+
+**Output:**
+
+```sh
+Every 5.0s: ./reconcile.sh                                                    Nikita: Wed Jul  9 18:05:05 2025
+Every 5.0s: ./reconcile.sh                                                    Nikita: Wed Jul  9 18:05:10 2025
+```
+
+
+### Task 2 
+
+1.
+**Input:**
+
+``` sh
+sumnios@Nikita:~/gitops-lab$ touch healthcheck.sh
+sumnios@Nikita:~/gitops-lab$ vi healthcheck.sh
+```
+**Code:**
+```sh
+DESIRED_MD5=$(md5sum desired-state.txt | awk '{print $1}')
+CURRENT_MD5=$(md5sum current-state.txt | awk '{print $1}')
+
+if [ "$DESIRED_MD5" != "$CURRENT_MD5" ]; then
+echo "$(date) - CRITICAL: State mismatch!" >> health.log
+else
+echo "$(date) - OK: States synchronized" >> health.log
+fi
+```
+
+2. 
+
+**Input:**
+
+```sh
+chmod +x healthcheck.sh
+```
+
+3.
+
+**Input:**
+
+```sh
+./healthcheck.sh
+cat health.log
+```
+
+**Output:**
+
+```sh
+sumnios@Nikita:~/gitops-lab$ ./healthcheck.sh
+sumnios@Nikita:~/gitops-lab$ cat health.log
+Wed Jul  9 18:07:24 MSK 2025 - OK: States synchronized
+```
+
+4. 
+
+**Input:**
+```sh
+echo "unapproved change" >> current-state.txt
+```
+
+5. 
+**Input:**
+```sh
+./healthcheck.sh
+cat health.log
+```
+
+**Output:**
+```sh
+sumnios@Nikita:~/gitops-lab$ echo "unapproved change" >> current-state.txt
+sumnios@Nikita:~/gitops-lab$ ./healthcheck.sh
+sumnios@Nikita:~/gitops-lab$ cat health.log
+Wed Jul  9 18:07:24 MSK 2025 - OK: States synchronized
+Wed Jul  9 18:07:40 MSK 2025 - CRITICAL: State mismatch!
+```