Ansible Playbook으로 CMD 로그 / logrotate / openfile / SAR 설정하기

Redhat 계열 리눅스에서 Ansible로 시스템 로그 및 openfile, sar 설정 자동화

환경

Rocky 8.10

Ansible 설정

01. CMD 로그 설정

cmdlog_rogrotate_openfile.yaml

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---
- name: Configure cmd logging, logrotate, and open files on Rocky 8.10
  hosts: prod
  become: true

  handlers:
    - name: restart rsyslog
      ansible.builtin.systemd:
        name: rsyslog
        state: restarted
        enabled: true

  tasks:
    - name: 01. Ensure directories exist
      ansible.builtin.file:
        path: "{{ item }}"
        state: directory
        mode: '0755'
      loop:
        - /home/ncloud24/scripts
        - /var/log/backup

    - name: 02. Deploy logMoveDelete.sh
      ansible.builtin.copy:
        src: files/logMoveDelete.sh
        dest: /home/ncloud24/scripts/logMoveDelete.sh
        owner: root
        group: root
        mode: '0700'

    - name: 03. Register daily cron for logMoveDelete.sh (01:00)
      ansible.builtin.cron:
        name: "Move and cleanup .tar.gz logs"
        user: root
        minute: "0"
        hour: "1"
        job: "/home/ncloud24/scripts/logMoveDelete.sh"

    - name: 04. Deploy /etc/logrotate.conf (backup original)
      ansible.builtin.copy:
        src: files/logrotate.conf
        dest: /etc/logrotate.conf
        owner: root
        group: root
        mode: '0644'
        backup: true

    # 기존 /etc/logrotate.d/syslog 목록에 /var/log/cmd.log 추가
    - name: 05. Ensure /var/log/cmd.log included in /etc/logrotate.d/syslog list
      ansible.builtin.lineinfile:
        path: /etc/logrotate.d/syslog
        regexp: '^/var/log/cmd\.log$'
        line: '/var/log/cmd.log'
        insertafter: '^/var/log/secure'
        backup: true

    - name: 06. Deploy /etc/profile.d/cmd_logging.sh
      ansible.builtin.copy:
        src: files/cmd_logging.sh
        dest: /etc/profile.d/cmd_logging.sh
        owner: root
        group: root
        mode: '0700'

    - name: 07. Ensure rsyslog rule for local1.notice -> /var/log/cmd.log
      ansible.builtin.lineinfile:
        path: /etc/rsyslog.conf
        regexp: '^local1\.notice'
        line: 'local1.notice                                               /var/log/cmd.log'
        insertafter: EOF
        backup: true
      notify: restart rsyslog

    # limits.conf 끝에 설정 (중복 방지)
    - name: 08. Append soft nofile to limits.conf
      ansible.builtin.lineinfile:
        path: /etc/security/limits.conf
        line: '* soft nofile 65535'
        regexp: '^\* +soft +nofile +\d+'
        insertafter: EOF
        create: true
        state: present

    - name: 09. Append hard nofile to limits.conf
      ansible.builtin.lineinfile:
        path: /etc/security/limits.conf
        line: '* hard nofile 65535'
        regexp: '^\* +hard +nofile +\d+'
        insertafter: EOF
        create: true
        state: present

    # user.conf 끝에 설정 (중복 방지)
    - name: 10. Ensure DefaultLimitNOFILE=65535 at end of /etc/systemd/user.conf
      ansible.builtin.lineinfile:
        path: /etc/systemd/user.conf
        regexp: '^#?DefaultLimitNOFILE='
        line: 'DefaultLimitNOFILE=65535'
        insertafter: EOF
        create: true
        state: present

    - name: 11. Reload systemd daemon
      ansible.builtin.systemd:
        daemon_reload: true

task01: 로그/스크립트 디렉터리 생성
task02: logMoveDelete.sh 배포 및 권한 설정
task03: 로그 관리 스크립트 cron 등록
task04: /etc/logrotate.conf 정책 설정
task05: /etc/logrotate.d/syslog 목록 설정
task06: /etc/profile.d/cmd_logging.sh 배포
task07: rsyslog.conf 설정 추가 + rsyslog 재시작
task08/09: limits.conf에 nofile 65535 soft/hard 설정(중복 방지)
task10: DefaultLimitNOFILE 설정
task11: systemd daemon-reload

files/cmd_logging.sh

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#!/bin/bash
# bash 대화형 세션에서 명령을 로깅
function logging
{
        stat="$?"
        cmd=$(history|tail -1)
        remoteaddr=$(who am i)
        if [ "$cmd" != "$cmd_old" ]; then
                logger -p local1.notice "[2] STAT=$stat"
                logger -p local1.notice "[1] $USER=$remoteaddr, PID=$$, PWD=$PWD, CMD=$cmd"
        fi
        cmd_old=$cmd
}
trap logging DEBUG

files/logMoveDelete.sh

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#!/bin/bash
PATH=/usr/sbin:/usr/bin:/sbin:/bin

source_dir="/var/log"
backup_dir="/var/log/backup"

# .tar.gz 파일을 백업 디렉토리로 이동
mv "$source_dir"/*.tar.gz "$backup_dir" 2>/dev/null || true

# 1년이 지난 파일 삭제
find "$backup_dir" -name "*.tar.gz" -type f -mtime +365 -exec rm {} \;

files/logrotate.conf

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daily
rotate 365
create
dateext
compress
compresscmd /bin/gzip
compressext .gz
include /etc/logrotate.d

/var/log/wtmp {
    monthly
    create 0664 root utmp
        minsize 1M
    rotate 1
}

/var/log/btmp {
    missingok
    monthly
    create 0600 root utmp
    rotate 1
}

02. SAR 로그 설정

sysstat 활성화 및 관리 주기 설정

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---
- name: Enable and configure sysstat (sar)
  hosts: prod
  become: true

  handlers:
    - name: restart sysstat
      ansible.builtin.systemd:
        name: sysstat
        state: restarted
        enabled: true

  tasks:
    - name: 01. Ensure sysstat package is installed
      ansible.builtin.package:
        name: sysstat
        state: present

    - name: 02. Set HISTORY=365 in /etc/sysconfig/sysstat
      ansible.builtin.lineinfile:
        path: /etc/sysconfig/sysstat
        regexp: '^HISTORY='
        line: 'HISTORY=365'
        insertafter: EOF
        backup: true
      notify: restart sysstat

    - name: 03. Set COMPRESSAFTER=90 in /etc/sysconfig/sysstat
      ansible.builtin.lineinfile:
        path: /etc/sysconfig/sysstat
        regexp: '^COMPRESSAFTER='
        line: 'COMPRESSAFTER=90'
        insertafter: EOF
      notify: restart sysstat

    - name: 04. Set ZIP="gzip" in /etc/sysconfig/sysstat
      ansible.builtin.lineinfile:
        path: /etc/sysconfig/sysstat
        regexp: '^ZIP='
        line: 'ZIP="gzip"'
        insertafter: EOF
      notify: restart sysstat

    - name: 05. Install /etc/cron.d/sysstat
      ansible.builtin.copy:
        dest: /etc/cron.d/sysstat
        owner: root
        group: root
        mode: '0644'
        content: |
          */1 * * * * root /usr/lib64/sa/sa1 1 1
          53 23 * * * root /usr/lib64/sa/sa2 -A
      notify: restart sysstat

    - name: 06. Ensure sysstat service is enabled and started
      ansible.builtin.systemd:
        name: sysstat
        enabled: true
        state: started

task01: sysstat 패키지 설치 확인
task02, 03, 04: /etc/sysconfig/sysstat 설정
task05: /etc/cron.d/sysstat 생성
task06: sysstat 활성화