Docker 集群管理

docker systemd unit file

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

[Service]
#Environment=HTTP_PROXY=10.48.127.169:8080 HTTPS_PROXY=10.48.127.169:8080
ExecStart=/usr/bin/docker -d -H unix:///var/run/docker.sock -H 0.0.0.0:4243
LimitNOFILE=1048576
LimitNPROC=1048576
EnvironmentFile=/lib/systemd/system/docker_env
[Install]
WantedBy=multi-user.target

Docker 环境配置

vim /lib/systemd/system/docker_env

HTTP_PROXY=http://10.48.127.169:8080
HTTPS_PROXY=http://10.48.127.169:8080
NO_PROXY="10.58.9.82,10.58.9.84"

etcd是一个高可用的键值存储系统，主要用于共享配置和服务发现。etcd是由CoreOS开发并维护的，灵感来自于 ZooKeeper 和 Doozer，它使用Go语言编写，并通过Raft一致性算法处理日志复制以保证强一致性。Raft是一个来自Stanford的新的一致性算法，适用于分布式系统的日志复制，Raft通过选举的方式来实现一致性，在Raft中，任何一个节点都可能成为Leader。Google的容器集群管理系统Kubernetes、开源PaaS平台Cloud Foundry和CoreOS的Fleet都广泛使用了etcd。

安装 

git clone https://github.com/coreos/etcd.git
cd /usr/local/etcd
./bulid
ln -s /usr/local/etcd/bin/etcd /usr/local/bin/




官网建议使用0.4.6版 




cd /usr/local/etcd
git checkout -b v0.4.6
./build




 安装etcdctl




git clone https://github.com/coreos/etcdctl.git
cd /usr/local/etcdctl/
./build
ln -s /usr/local/etcdctl/bin/etcdctl /usr/local/bin/




配置


etcd discovery 




etcd -name discovery -peer-addr 10.58.9.85:8001 -peer-bind-addr 10.58.9.85:8001 -addr 10.58.9.85:5001 -bind-addr 10.58.9.85:5001 -data-dir /home/discovery -discovery=""




etcd services




vim /etc/etcd/etcd.conf

addr = "10.58.9.82:4001"
bind_addr = "0.0.0.0"
#change to every member's client IP and port 
ca_file = ""
cert_file = ""
cors = []
cpu_profile_file = ""
data_dir = "/home/etcd/machine"
#specify data directory
discovery = "http://10.58.9.85:5001/v2/keys/discovery"
#configure to discovery cluster's ip + cluster ID
http_read_timeout = 10.0
http_write_timeout = 10.0
key_file = ""
peers = []
peers_file = ""
max_cluster_size = 9
max_result_buffer = 1024
max_retry_attempts = 3
name = "Peer-82"
#change name
snapshot = true
verbose = false
very_verbose = false

[peer]
addr = "10.58.9.82:7001"
bind_addr = "0.0.0.0"
#change to every member's peer IP and port 
ca_file = ""
cert_file = ""
key_file = ""

[cluster]
active_size = 9
remove_delay = 1800.0
sync_interval = 5.0




启动etcd




etcd -config=/etc/etcd/etcd.conf




测试




curl -L http://127.0.0.1:4001/v2/keys/message -XPUT -d value="Hello world"
curl http://127.0.0.1:4001/v2/keys/message




使用systemd unit file启动




vim /lib/systemd/system/etcd-discovery.service






[Unit]
Description=Etcd Discovery Server
After=network.target

[Service]
Environment="ETCD_ADDR=10.58.9.85:5001"
Environment="ETCD_BIND_ADDR=0.0.0.0"
Environment="ETCD_DATA_DIR=/home/etcd/discovery"
Environment="ETCD_HTTP_READ_TIMEOUT=10.0"
Environment="ETCD_HTTP_WRITE_TIMEOUT=10.0"
Environment="ETCD_DISCOVERY="
Environment="ETCD_MAX_CLUSTER_SIZE=9"
Environment="ETCD_MAX_RESULT_BUFFER=1024"
Environment="ETCD_MAX_RETRY_ATTEMPTS=3"
Environment="ETCD_NAME=etcd-discovery"
Environment="ETCD_SNAPSHOT=true"
Environment="ETCD_VERBOSE=false"
Environment="ETCD_VERY_VERBOSE=false"
Environment="ETCD_PEER_ADDR=10.58.9.85:8001"
Environment="ETCD_PEER_BIND_ADDR=0.0.0.0"
Environment="ETCD_CLUSTER_ACTIVE_SIZE=9"
Environment="ETCD_CLUSTER_REMOVE_DELAY=1800.0"
Environment="ETCD_CLUSTER_SYNC_INTERVAL=5.0"

# etc logs to the journal directly, suppress double logging
#StandardOutput=null
#WorkingDirectory=/home/etcd/discovery
ExecStart=/usr/local/bin/etcd

[Install]
WantedBy=multi-user.target






vim /lib/systemd/system/etcd.service






[Unit]
Description=Etcd Server
After=network.target
#Requires=etcd-discovery.service

[Service]
Environment="ETCD_ADDR=10.58.9.85:4001"
Environment="ETCD_BIND_ADDR=0.0.0.0"
Environment="ETCD_DATA_DIR=/home/etcd/machine"
Environment="ETCD_HTTP_READ_TIMEOUT=10.0"
Environment="ETCD_HTTP_WRITE_TIMEOUT=10.0"
Environment="ETCD_DISCOVERY=http://10.58.9.85:5001/v2/keys/discovery"
Environment="ETCD_MAX_CLUSTER_SIZE=9"
Environment="ETCD_MAX_RESULT_BUFFER=1024"
Environment="ETCD_MAX_RETRY_ATTEMPTS=3"
Environment="ETCD_NAME=peer-85"
Environment="ETCD_SNAPSHOT=true"
Environment="ETCD_VERBOSE=false"
Environment="ETCD_VERY_VERBOSE=false"
Environment="ETCD_PEER_ADDR=10.58.9.85:7001"
Environment="ETCD_PEER_BIND_ADDR=0.0.0.0"
Environment="ETCD_CLUSTER_ACTIVE_SIZE=9"
Environment="ETCD_CLUSTER_REMOVE_DELAY=1800.0"
Environment="ETCD_CLUSTER_SYNC_INTERVAL=5.0"

# etc logs to the journal directly, suppress double logging
#StandardOutput=null
#WorkingDirectory=/home/etcd/discovery
ExecStart=/usr/local/bin/etcd

[Install]
WantedBy=multi-user.target






systemctl enable etcd-discovery.service
systemctl daemon-reload
systemctl start etcd-discovery.service
systemctl stop etcd-discovery.service

systemctl enable etcd.service
systemctl daemon-reload
systemctl start etcd.service
systemctl stop etcd.service




 etcdctl 命令


查看所有根节点




etcdctl ls --recursive




删除指定节点




etcdctl rm fleet --recursive




 安装fleet  




git clone https://github.com/coreos/fleet.git
cd fleet
./build
ln -s /usr/local/fleet/bin/fleetd /usr/local/bin/
ln -s /usr/local/fleet/bin/fleetctl /usr/local/bin/




生成dbus machine-id


http://dbus.freedesktop.org/doc/dbus-uuidgen.1.html




dbus-uuidgen > /var/lib/dbus/machine-id
ln -s /var/lib/dbus/machine-id /etc/machine-id




 systemd fleet 启动




vim /lib/systemd/system/fleet.service






[Unit]
Description=Fleet Server
After=network.target
Requires=etcd.service

[Service]
Environment="FLEET_ETCD_SERVERS=http://10.58.9.85:4001"
Environment="FLEET_ETCD_REQUEST=2.0"
Environment="FLEET_VERBOSITY=0"
#Environment="FLEET_PUBLIC_IP=10.58.9.85"
Environment="FLEET_METADATA='role=default'"
Environment="FLEET_ETCD_KEY_PREFIX=fleet"

ExecStart=/usr/local/bin/fleetd

[Install]
WantedBy=multi-user.target






systemctl enable fleet.service
systemctl start fleet.service




fleetctl 命令




fleetctl --debug --endpoint=http://10.58.9.85:4001 --etcd-key-prefix=/fleet/ list-machines
fleetctl --debug --endpoint=http://10.58.9.85:4001 --etcd-key-prefix=/fleet/ submit tickler.1.service 
fleetctl --debug --endpoint=http://10.58.9.85:4001 --etcd-key-prefix=/fleet/ list-unit-files
fleetctl --debug --endpoint=http://10.58.9.85:4001 --etcd-key-prefix=/fleet/ start tickler.1.service
fleetctl --debug --endpoint=http://10.58.9.85:4001 --etcd-key-prefix=/fleet/ status tickler.1.service
fleetctl --debug --endpoint=http://10.58.9.85:4001 --etcd-key-prefix=/fleet/ journal tickler.1.service




fleet API




vim /lib/systemd/system/fleet.socket

[Socket]
# Talk to the API over a Unix domain socket (default)
#ListenStream=/var/run/fleet.sock
# Talk to the API over an exposed port, uncomment to enable and choose a port
ListenStream=127.0.0.1:49155
Service=fleet.service

[Install]
WantedBy=sockets.target






systemctl daemon-reload
systemctl start fleet.socket
systemctl start fleet.service





 





CommandDesired StateValid Previous States





fleetctl submit
inactive
(unknown)




fleetctl load
loaded
(unknown) or inactive




fleetctl start
launched
(unknown) or inactive or loaded




fleetctl stop
loaded
launched




fleetctl unload
inactive
launched or loaded




fleetctl destroy
(unknown)
launched or loaded or inactive







        

	      

	    

	  

	  

	    
      
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          原文地址：https://www.cnblogs.com/saintaxl/p/4024978.html