cluster_name 集群名称，可调整 tidb_version TiDB 版本，TiDB-Ansible 各分支默认已配置 process_supervision 进程监管方式，默认为 systemd，可选 supervise timezone 修改部署目标机器时区，默认为 Asia/Shanghai ，可调整，与 set_timezone 变量结合使用 set_timezone 默认为 systemctl status ntpd.service 2. ● ntpd.service - Network Time Service 3. Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor preset: disabled) 4. Active: active (running) since 一 2017-12-18 3. $ sudo systemctl enable ntpd.service 1. # process supervision, [systemd, supervise] 如何检测 NTP 服务是否正常 如何调整进程监管方式从 supervise 到 systemd Ansible 部署方案（强烈推荐） - 218 - 本文档使用 书栈(BookStack.CN) 构建 TiDB-Anisble

support Python 3.8 • macOS host: Fix VM crashes (most visible on macOS Catalina) • Linux host: fix systemd service dependency for web service • Linux host: Support Linux 5.5 (guest additions not yet) • Linux for host-only adapter to 9706 bytes to support jumbo frames • Linux Additions: on systems using systemd, make sure that only the Guest Additions timesync service is active • many unlisted fixes and improvements name so that /proc/mounts contains this name instead of ’none’ • Linux Additions: workaround for a systemd problem in conjunction with SELinux which prevented to properly enable the ’vboxadd’ service during

for host-only adapter to 9706 bytes to support jumbo frames • Linux Additions: on systems using systemd, make sure that only the Guest Additions timesync service is active • many unlisted fixes and improvements name so that /proc/mounts contains this name instead of ’none’ • Linux Additions: workaround for a systemd problem in conjunction with SELinux which prevented to properly enable the ’vboxadd’ service during to RAW images could result in a disk image containing all zeroes • Linux hosts: several fixes for systemd integration in .deb / .rpm packages (e.g. bug #14665). The command for recompiling the host kernel

sudo systemctl status ntpd.service ntpd.service - Network Time Service Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor �→ preset: disabled) Active: active (running) since 一 2017-12-18 sudo systemctl status chronyd.service chronyd.service - NTP client/server Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; �→ vendor preset: enabled) Active: active (running) since Mon --type=devices --action=change 7. Create a service to configure the CPU power policy: cat >> /etc/systemd/system/cpupower.service << EOF [Unit] Description=CPU performance [Service] Type=oneshot ExecSta

sudo systemctl status ntpd.service ntpd.service - Network Time Service Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor �→ preset: disabled) Active: active (running) since 一 2017-12-18 sudo systemctl status chronyd.service chronyd.service - NTP client/server Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; �→ vendor preset: enabled) Active: active (running) since Mon --type=devices --action=change 7. Create a service to configure the CPU power policy: cat >> /etc/systemd/system/cpupower.service << EOF [Unit] Description=CPU performance [Service] Type=oneshot ExecSta

redhat suse 麒麟 欧拉 ARM 裸金属/云服务器/私有云虚拟机 x86 除了 kubelet 其他都跑容器里 为了更好的兼容性，不用系统依赖如rpm 只 依赖内核如 systemd 借助集群镜像能力自动识别系统架构 自己实现控制器对接公有云对比其他方案 ，且不触发 API 调用限制 Apply 了这连个 yaml 就会自动在各种公有云上启动 虚拟机并按照要求安装好

sudo systemctl status ntpd.service ntpd.service - Network Time Service Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor �→ preset: disabled) Active: active (running) since 一 2017-12-18 sudo systemctl status chronyd.service chronyd.service - NTP client/server Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; �→ vendor preset: enabled) Active: active (running) since Mon --type=devices --action=change 7. Create a service to configure the CPU power policy: cat >> /etc/systemd/system/cpupower.service << EOF [Unit] Description=CPU performance [Service] Type=oneshot ExecSta

sudo systemctl status ntpd.service ntpd.service - Network Time Service Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor �→ preset: disabled) Active: active (running) since 一 2017-12-18 sudo systemctl status chronyd.service chronyd.service - NTP client/server Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; �→ vendor preset: enabled) Active: active (running) since Mon --type=devices --action=change 7. Create a service to configure the CPU power policy: cat >> /etc/systemd/system/cpupower.service << EOF [Unit] Description=CPU performance [Service] Type=oneshot ExecSta

sudo systemctl status ntpd.service ntpd.service - Network Time Service Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor �→ preset: disabled) Active: active (running) since 一 2017-12-18 sudo systemctl status chronyd.service chronyd.service - NTP client/server Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; �→ vendor preset: enabled) Active: active (running) since Mon --type=devices --action=change 7. Create a service to configure the CPU power policy: cat >> /etc/systemd/system/cpupower.service << EOF [Unit] Description=CPU performance [Service] Type=oneshot ExecSta

with a process supervisor which automatically restarts them. Be aware that service managers, like systemd, may disable a service when it restarts too often. Be advised that new TiDB clusters will accept