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de49b34cdc
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Document pve10 static IPs, monitoring stack, and site LXCs; add portfolio to inventory; Mailcow mailbox automation; vault import/export scripts; security audit guides and UniFi DHCP reference. Co-authored-by: Cursor <cursoragent@cursor.com>
119 lines
3.9 KiB
Bash
Executable File
119 lines
3.9 KiB
Bash
Executable File
#!/bin/bash
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# Automatically switch to fallback IPs when primary IPs fail
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HOSTS_FILE="inventories/production/hosts"
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TIMEOUT=3
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CHANGED=false
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UNAME_S="$(uname -s)"
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# Colors
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GREEN='\033[0;32m'
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RED='\033[0;31m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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echo -e "${BLUE}Auto-fallback: Testing and switching to fallback IPs when needed...${NC}"
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echo "=================================================================="
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# Function to test IP connectivity
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test_ip() {
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local ip="$1"
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if [[ "$UNAME_S" == "Darwin" ]]; then
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# macOS: -W is wait time in milliseconds
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ping -c 1 -W $((TIMEOUT * 1000)) "$ip" >/dev/null 2>&1
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else
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# Linux: -W is timeout in seconds
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ping -c 1 -W "$TIMEOUT" "$ip" >/dev/null 2>&1
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fi
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}
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# Function to test SSH connectivity
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test_ssh() {
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local host="$1"
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local ip="$2"
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local user="$3"
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if ssh -o ConnectTimeout=3 -o BatchMode=yes "$user@$ip" exit >/dev/null 2>&1; then
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return 0
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else
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return 1
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fi
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}
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# Function to switch to fallback IP
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switch_to_fallback() {
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local hostname="$1"
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local primary_ip="$2"
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local fallback_ip="$3"
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echo -e " ${YELLOW}→ Switching $hostname to fallback IP: $fallback_ip${NC}"
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# Use sed to replace the primary IP with fallback IP (BSD/GNU compatible)
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if [[ "$UNAME_S" == "Darwin" ]]; then
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sed -i '' "s/$hostname ansible_host=$primary_ip/$hostname ansible_host=$fallback_ip/" "$HOSTS_FILE"
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sed -i '' "s/ ansible_host_fallback=$fallback_ip//" "$HOSTS_FILE"
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else
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sed -i "s/$hostname ansible_host=$primary_ip/$hostname ansible_host=$fallback_ip/" "$HOSTS_FILE"
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sed -i "s/ ansible_host_fallback=$fallback_ip//" "$HOSTS_FILE"
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fi
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CHANGED=true
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}
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# Parse hosts file and test connectivity
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while IFS= read -r line; do
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# Skip empty lines and comments
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[[ -z "$line" || "$line" =~ ^# ]] && continue
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# Skip group headers
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[[ "$line" =~ ^\[.*\]$ ]] && continue
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# Parse host entry
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if [[ "$line" =~ ansible_host= ]]; then
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hostname=$(echo "$line" | awk '{print $1}')
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primary_ip=$(echo "$line" | sed -n 's/.*ansible_host=\([^[:space:]]*\).*/\1/p')
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fallback_ip=$(echo "$line" | sed -n 's/.*ansible_host_fallback=\([^[:space:]]*\).*/\1/p')
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user=$(echo "$line" | sed -n 's/.*ansible_user=\([^[:space:]]*\).*/\1/p')
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[[ -z "$user" ]] && user="root"
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echo -n "Testing $hostname ($primary_ip)... "
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# Test primary IP
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if test_ip "$primary_ip"; then
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# Test SSH on primary IP
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if test_ssh "$hostname" "$primary_ip" "$user"; then
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echo -e "${GREEN}✓ OK${NC}"
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else
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echo -e "${YELLOW}⚠ Ping OK, SSH failed${NC}"
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if [[ -n "$fallback_ip" ]]; then
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echo -e " ${BLUE}→ Trying fallback IP...${NC}"
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if test_ip "$fallback_ip" && test_ssh "$hostname" "$fallback_ip" "$user"; then
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switch_to_fallback "$hostname" "$primary_ip" "$fallback_ip"
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else
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echo -e " ${RED}✗ Fallback also failed${NC}"
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fi
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fi
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fi
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else
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echo -e "${RED}✗ Primary IP failed${NC}"
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if [[ -n "$fallback_ip" ]]; then
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echo -e " ${BLUE}→ Trying fallback IP...${NC}"
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if test_ip "$fallback_ip" && test_ssh "$hostname" "$fallback_ip" "$user"; then
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switch_to_fallback "$hostname" "$primary_ip" "$fallback_ip"
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else
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echo -e " ${RED}✗ Fallback also failed${NC}"
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fi
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fi
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fi
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fi
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done < "$HOSTS_FILE"
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echo ""
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if [[ "$CHANGED" == "true" ]]; then
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echo -e "${GREEN}✓ Hosts file updated with working IPs!${NC}"
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echo -e "${BLUE}You can now run your Ansible commands.${NC}"
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else
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echo -e "${GREEN}✓ All primary IPs are working - no changes needed.${NC}"
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fi
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