wip

devops/Dockerfile

@@ -0,0 +1,3 @@
+FROM curlimages/curl
+WORKDIR /opt/devops
+ADD bin .

devops/bin/k8s-pgdb.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+set -e
+
+if [ "$#" -lt 4 ] ;then
+    echo "Backup postgres database on k8s container with pg_dump and gzip"
+    echo
+    echo "  Usage $0 <path-to-dbname.gz> <pod-app-label> <container-name> [dbname]"
+    exit 1
+fi
+
+BACKUPGZ=$2
+APP=$3
+CONTAINER=$4
+DBNAME=${5-"$(basename "$BACKUPGZ" .sql.gz)"}
+
+POD=$(kubectl get pod --selector "app=$APP" | tail +2 | awk '{print $1}')
+if [ -z "$POD" ] ; then
+    echo not pod found!
+    exit 1
+fi
+
+backup () {
+    kubectl exec "$POD" -c "$CONTAINER" -- pg_dump -U postgres --no-owner "$DBNAME" | gzip > "$BACKUPGZ"
+}
+
+restore () {
+    kubectl exec "$POD" -c "$CONTAINER" -- psql postgres postgres -c "DROP DATABASE IF EXISTS $DBNAME"
+    kubectl exec "$POD" -c "$CONTAINER" -- psql postgres postgres -c "CREATE DATABASE  $DBNAME"
+    kubectl exec -i "$POD" -c "$CONTAINER" -- sh -c "gunzip -c | psql $DBNAME postgres" < "$BACKUPGZ"
+}
+
+
+case $1 in
+    backup)
+        backup
+        ;;
+    restore)
+        restore
+        ;;
+esac

devops/bin/k8s-pgdball.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+
+set -e
+
+if [ "$#" -lt 4 ] ;then
+    echo "Backup all postgres databases on k8s container with pg_dump and gzip"
+    echo
+    echo "  Usage $0 <path-to-backup-directory> <pod-app-label> <container-name> [dbname]"
+    exit 1
+fi
+
+DIR=$(dirname "$(readlink -f "$0")")
+BACKUPDIR=$2
+APP=$3
+CONTAINER=$4
+
+POD=$(kubectl get pod --selector "app=$APP" | tail +2 | awk '{print $1}')
+if [ -z "$POD" ] ; then
+    echo not pod found!
+    exit 1
+fi
+
+backup () {
+    mkdir -p "$BACKUPDIR"
+    for DBNAME in $(
+        kubectl exec "$POD" -c "$CONTAINER" -- \
+            psql postgres postgres -c "SELECT datname FROM pg_database" | \
+        tail +3 | head -n -2
+    ); do
+        case $DBNAME in
+            postgres|template0|template1)
+                ;;
+            *)
+                echo "backing up $DBNAME to $BACKUPDIR/$DBNAME.sql.gz"
+                "$DIR/k8s-pgdb.sh" backup "$BACKUPDIR/$DBNAME.sql.gz" "$APP" "$CONTAINER" "$DBNAME"
+                ;;
+        esac
+    done
+}
+
+restore () {
+    for BACKUPGZ in "$BACKUPDIR"/*.sql.gz ;do
+        "$DIR/pgdb.sh" restore "$BACKUPGZ"
+    done
+}
+
+
+case $1 in
+    backup)
+        backup
+        ;;
+    restore)
+        restore
+        ;;
+esac

devops/bin/renew-cf-dns-record.sh

@@ -22,4 +22,4 @@ curl -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RE
      -H "Content-Type: application/json" \
      --data '{"type": "A", "name": "'"$DOMAIN"'", "content": "'"$IP"'"}'
 
-echo "$IP" > /tmp/myip
+echo "$IP" > /tmp/myip

devops/k8s-devops.yaml

@@ -0,0 +1,82 @@
+# update cloudflare dns record if ip changed on minutely basis
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: ddns
+spec:
+  schedule: "*/1 * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: renew-cf-dns-record
+            image: devops
+            imagePullPolicy: IfNotPresent
+            args:
+            - renew-cf-dns-record.sh
+            - {EMAIL}
+            - {APP_KEY}
+            - {ZONE_ID}
+            - {RECORD_ID}
+            - {DOMAIN}
+            volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+          restartPolicy: OnFailure
+          volumes:
+            - name: tmp
+              hostPath:
+                path: /tmp
+---
+# backup local data and remote postgres database at 6:00am everyday
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: backup
+spec:
+  schedule: "0 6 * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: backup-local-dir
+            image: devops
+            imagePullPolicy: IfNotPresent
+            args:
+            - backup-local-dir
+            - {BLD_ROTATE}
+            - {BLD_SRC_DIR}
+            - {BLD_DEST_DIR}
+            volumeMounts:
+            - name: bldsrcdir
+              mountPath: {BLD_SRC_DIR}
+            - name: blddestdir
+              mountPath: {BLD_DEST_DIR}
+          - name: backup-k8s-pgdbs
+            image: devops
+            imagePullPolicy: IfNotPresent
+            args:
+            - backup-k8s-pgdbs
+            - {BKP_ROTATE}
+            - {POD_APP_LABEL}
+            - {CONTAINER_NAME}
+            - {BKP_DEST_DIR}
+            volumeMounts:
+            - name: bkpdestdir
+              mountPath: {BKP_DEST_DIR}
+          restartPolicy: OnFailure
+          volumes:
+            - name: bldsrcdir
+              hostPath:
+                path: {BLD_SRC_DIR}
+                type: Directory
+            - name: blddestdir
+              hostPath:
+                path: {BLD_DEST_DIR}
+                type: DirectoryOrCreate
+            - name: bkpdestdir
+              hostPath:
+                path: {BKP_DEST_DIR}
+                type: DirectoryOrCreate