[Unit]
Description=Docker Socket for the API
PartOf=docker.service

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker

[Install]
WantedBy=sockets.target

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
#ExecStart=/usr/bin/dockerd
#ExecStart=/usr/bin/docker daemon --tlsverify --tlscacert=/root/openssl/ca.pem --tlscert=/root/openssl/server-cert.pem --tlskey=/root/openssl/server-key.pem --registry-mirror=http://3cda3ca9.m.daocloud.io -H tcp://0.0.0.0:2376

#ExecStart=/usr/bin/docker daemon --registry-mirror=http://3cda3ca9.m.daocloud.io -H fd:// -H tcp://0.0.0.0:2375
#ExecStart=/usr/bin/dockerd --registry-mirror=http://3cda3ca9.m.daocloud.io
ExecStart=/usr/bin/dockerd --registry-mirror=http://3cda3ca9.m.daocloud.io -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375

ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process

[Install]
WantedBy=multi-user.target

# Copyright The containerd Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target

[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd

Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=infinity
# Comment TasksMax if your systemd version does not supports it.
# Only systemd 226 and above support this version.
TasksMax=infinity
OOMScoreAdjust=-999

[Install]
WantedBy=multi-user.target

docker run --name=nginx_docker --privileged=true --restart=always -p 8000:80 -v /root/nginx/nginx.conf:/etc/nginx/nginx.conf -v /root/nginx/conf.d:/etc/nginx/conf.d -v /root/nginx/html:/usr/share/nginx/html -v /root/nginx/logs:/var/log/nginx -d docker_nginx:dng_V1.0

echo "/usr/local/lib64/" >> /etc/ld.so.conf
ldconfig
mv /usr/bin/openssl /usr/bin/openssl.old
ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl
ln -s /usr/local/openssl/include/openssl /usr/include/openssl
echo "/usr/local/openssl/lib" >> /etc/ld.so.conf
ldconfig -v

global_defs {
    #每个keepalived取个不同名称
    router_id 56
}
vrrp_script chk_nginx {
	script "/usr/local/src/nginx_check.sh"
	interval 2
	weight 2
}
vrrp_instance VI_1 {
    # MASTER为主实例,BACKUP 为从实例
    state BACKUP
    # 网卡名称
    interface ens160
    # 主备这里要配置为同样的 
    virtual_router_id 68
    # 优先级,主要高于备. 一般主配置为100  备配置为80
    priority 100
    advert_int 1
    # 主动抢占,主备都开启的话,服务器抢占过去后,要等这个服务器keepalived停掉才会漂移到另一台
    nopreempt
    authentication {
        # 主备必须配置成同样的
        auth_type PASS
         # 主备必须配置成同样的
        auth_pass 1111
    }
    virtual_ipaddress {
      # vip,主备必须配置一样
      15.48.25.68
    }
	track_script{
	#要执行的检测脚本，需要给权限
	  chk_nginx
	}
}

#!/bin/bash
#version 0.0.1
#
A=`ps -C nginx --no-header |wc -l`
if [ $A -eq 0 ];then
     systemctl restart docker
      sleep 3
            if [ `ps -C nginx --no-header |wc -l` -eq 0 ];then
                  systemctl stop keepalived
fi
fi