Add Linux fresh setup toolkit

2026-06-06 00:23:11 +00:00
parent 8cb92de06f
commit 4e739c5c99
25 changed files with 1646 additions and 0 deletions
@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+set -o errexit
+set -o nounset
+set -o pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+# shellcheck source=00-platform-guard.inc
+source "$SCRIPT_DIR/00-platform-guard.inc"
+JOURNAL_SOURCE="$SCRIPT_DIR/../files/systemd/journald-ailab-limits.conf"
+JOURNAL_DEST="/etc/systemd/journald.conf.d/ailab-limits.conf"
+SYSCTL_SOURCE="$SCRIPT_DIR/../files/sysctl/99-ailab.conf"
+SYSCTL_DEST="/etc/sysctl.d/99-ailab.conf"
+
+install_config() {
+  local source_path="$1"
+  local destination_path="$2"
+  local mode="$3"
+  local backup
+
+  install -d -m 0755 "$(dirname "$destination_path")"
+  if [[ -f "$destination_path" ]] && cmp -s "$source_path" "$destination_path"; then
+    printf 'OK: %s is already current\n' "$destination_path"
+    return 0
+  fi
+  if [[ -f "$destination_path" ]]; then
+    backup="${destination_path}.$(date '+%Y%m%d-%H%M%S').bak"
+    install -m "$mode" "$destination_path" "$backup"
+    printf 'INFO: backed up %s to %s\n' "$destination_path" "$backup"
+  fi
+  install -m "$mode" "$source_path" "$destination_path"
+  printf 'OK: installed %s\n' "$destination_path"
+}
+
+if ((EUID != 0)); then
+  printf 'CRITICAL: tuning setup must run as root\n' >&2
+  exit 2
+fi
+require_supported_ubuntu
+for source_path in "$JOURNAL_SOURCE" "$SYSCTL_SOURCE"; do
+  if [[ ! -r "$source_path" ]]; then
+    printf 'CRITICAL: required configuration is missing: %s\n' "$source_path" >&2
+    exit 2
+  fi
+done
+
+if ! command -v sysctl >/dev/null 2>&1 || ! command -v systemctl >/dev/null 2>&1; then
+  printf 'CRITICAL: sysctl and systemctl are required\n' >&2
+  exit 2
+fi
+
+if ! command -v sensors-detect >/dev/null 2>&1 || \
+  ! systemctl cat sysstat.service >/dev/null 2>&1; then
+  apt-get update
+  DEBIAN_FRONTEND=noninteractive apt-get install -y lm-sensors sysstat
+fi
+
+install_config "$JOURNAL_SOURCE" "$JOURNAL_DEST" 0644
+install_config "$SYSCTL_SOURCE" "$SYSCTL_DEST" 0644
+
+sysctl --system
+systemctl restart systemd-journald
+systemctl enable --now sysstat
+
+if command -v sensors-detect >/dev/null 2>&1; then
+  sensors-detect --auto || printf 'WARNING: sensors-detect did not complete successfully\n'
+fi
+printf 'OK: host tuning completed\n'