127 lines
2.6 KiB
Bash
Executable file
127 lines
2.6 KiB
Bash
Executable file
#!/usr/bin/env bash
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CONFIG_FILE="/etc/update-manager.conf"
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[[ -f "$CONFIG_FILE" ]] || CONFIG_FILE="./update-manager.conf"
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if [[ -f "$CONFIG_FILE" ]]; then
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# shellcheck disable=SC1090
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source "$CONFIG_FILE"
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fi
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DEFAULT_HOSTS_FILE="${HOSTS_FILE:-/opt/update-manager/hosts.conf}"
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SSH_OPTIONS="${SSH_OPTIONS:--o BatchMode=yes -o ConnectTimeout=5}"
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########################################
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# Ensure hosts file exists
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########################################
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ensure_hosts_file() {
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if [[ ! -f "$DEFAULT_HOSTS_FILE" ]]; then
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echo "Creating example hosts file: $DEFAULT_HOSTS_FILE"
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mkdir -p "$(dirname "$DEFAULT_HOSTS_FILE")"
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cat > "$DEFAULT_HOSTS_FILE" <<'EOF'
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# Example hosts file
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# Format:
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# name ip user
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#
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# server1 192.168.1.10 user
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# server2 192.168.1.20 user
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# server3 10.0.0.5 root
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EOF
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fi
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}
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########################################
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# Helpers
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########################################
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get_hosts_file() {
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if [[ -n "$2" ]]; then
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echo "$2"
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else
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echo "$DEFAULT_HOSTS_FILE"
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fi
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}
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usage() {
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cat <<USAGE
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Usage:
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$0 check [hosts_file]
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Examples:
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$0 check
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$0 check /path/to/hosts.conf
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HOSTS_FILE=/path/to/hosts.conf $0 check
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USAGE
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}
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########################################
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# Check single host
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########################################
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check_host() {
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local name="$1"
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local ip="$2"
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local user="$3"
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local result
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local rc
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result=$(ssh -n $SSH_OPTIONS "${user}@${ip}" \
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"apt list --upgradable 2>/dev/null | sed '/^Listing/d'" 2>&1)
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rc=$?
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printf "===== %s (%s) =====\n" "$name" "$ip"
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if [[ $rc -ne 0 ]]; then
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echo "❌ connection failed"
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echo "$result"
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echo
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return
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fi
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if [[ -z "$result" ]]; then
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echo "Up-to-date"
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else
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echo "$result"
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fi
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echo
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}
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########################################
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# Check all hosts
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########################################
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check_all() {
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local hosts_file="$1"
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ensure_hosts_file
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while IFS= read -r line; do
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[[ -z "$line" || "$line" =~ ^[[:space:]]*# ]] && continue
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local name ip user
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read -r name ip user <<< "$line"
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[[ -z "$name" || -z "$ip" || -z "$user" ]] && continue
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check_host "$name" "$ip" "$user"
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done < "$hosts_file"
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}
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########################################
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# Main
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########################################
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case "${1:-}" in
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check)
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HOSTS_FILE_TO_USE="$(get_hosts_file "$@")"
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check_all "$HOSTS_FILE_TO_USE"
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;;
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*)
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usage
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exit 1
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;;
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esac
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