x

swarm.sh

@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+OUT_DIR=${1:-swarm-snapshot-$(date +%Y%m%d-%H%M%S)}
+mkdir -p "$OUT_DIR"/{cluster,nodes,services,stacks,networks,volumes,configs,secrets}
+
+echo "Writing snapshot to: $OUT_DIR"
+
+########################
+# Cluster-level info   #
+########################
+
+docker info --format '{{json .}}'        | jq '.' > "$OUT_DIR/cluster/docker-info.json"
+docker info --format '{{json .Swarm}}'   | jq '.' > "$OUT_DIR/cluster/swarm.json"
+
+########################
+# Nodes                #
+########################
+
+docker node ls -q | while read -r id; do
+  echo "Node: $id"
+  docker node inspect "$id" | jq '.' > "$OUT_DIR/nodes/$id.json"
+done
+
+########################
+# Services             #
+########################
+
+docker service ls -q | while read -r id; do
+  name="$(docker service inspect --format '{{.Spec.Name}}' "$id")"
+  echo "Service: $name"
+  docker service inspect "$id" | jq '.' > "$OUT_DIR/services/${name}.json"
+done
+
+########################
+# Stacks               #
+########################
+
+for stack in $(docker stack ls --format '{{.Name}}'); do
+  echo "Stack: $stack"
+  mkdir -p "$OUT_DIR/stacks/$stack"
+
+  docker stack services "$stack" --format '{{json .}}' \
+    | jq -s '.' > "$OUT_DIR/stacks/$stack/services.json"
+
+  docker stack ps "$stack" --format '{{json .}}' \
+    | jq -s '.' > "$OUT_DIR/stacks/$stack/tasks.json"
+
+  # If available, this reconstructs the original compose-ish config
+  docker stack config "$stack" \
+    > "$OUT_DIR/stacks/$stack/stack-config.yml" 2>/dev/null || true
+done
+
+########################
+# Networks             #
+########################
+
+docker network ls --format '{{.ID}} {{.Name}}' \
+| while read -r id name; do
+  echo "Network: $name"
+  docker network inspect "$id" | jq '.' > "$OUT_DIR/networks/${name}.json"
+done
+
+########################
+# Volumes              #
+########################
+
+docker volume ls --format '{{.Name}}' \
+| while read -r vol; do
+  echo "Volume: $vol"
+  docker volume inspect "$vol" | jq '.' > "$OUT_DIR/volumes/${vol}.json"
+done
+
+########################
+# Configs              #
+########################
+
+docker config ls -q | while read -r id; do
+  name="$(docker config inspect --format '{{.Spec.Name}}' "$id")"
+  echo "Config: $name"
+  docker config inspect "$id" | jq '.' > "$OUT_DIR/configs/${name}.json"
+done
+
+########################
+# Secrets (metadata)   #
+########################
+
+docker secret ls -q | while read -r id; do
+  name="$(docker secret inspect --format '{{.Spec.Name}}' "$id")"
+  echo "Secret: $name (metadata only)"
+  docker secret inspect "$id" | jq '.' > "$OUT_DIR/secrets/${name}.json"
+done
+
+echo "Done. Snapshot in: $OUT_DIR"