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19 Docker容器集群网络架构：二、etcd集群离线部署

原创 Docker/K8 作者：shuchaoyang 时间：2024-11-18 08:56:46 0 删除 编辑

19 Docker容器集群网络架构：二、etcd集群离线部署 2.1 准备工作 2.1.1 上传etcd 2.1.2 解压etcd 2.1.3 拷贝文件到/usr/local/bin 2.1.4 创建相关目录并赋权 2.2 创建etcd集群 2.2.1 创建etcd配置文件 2.2.2 配置etcd服务文件 2.2.3 启动ectd服务 2.3 查看etcd集群成员 2.3.1 查看etcd集群健康状态 2.3.2 查看etcd集群成员

19 Docker容器集群网络架构：二、etcd集群离线部署

2.1 准备工作

以docker01节点为例，其它节点以此执行 。

2.1.1 上传etcd
[root@docker01 ~]
# cd /opt


[root@docker01 opt]
# ls


containerd  docker-19.03.15-stable  docker-19.03.15-stable.tar.gz  etcd-v3.0.12-linux-amd64.tar.gz  rh


[root@docker01 opt]
#
2.1.2 解压etcd
[root@docker01 opt]
# tar xzf etcd-v3.0.12-linux-amd64.tar.gz


[root@docker01 opt]
# 


[root@docker01 opt]
# ls


containerd              docker-19.03.15-stable.tar.gz  etcd-v3.0.12-linux-amd64.tar.gz


docker-19.03.15-stable  etcd-v3.0.12-linux-amd64       rh


[root@docker01 opt]
#
2.1.3 拷贝文件到/usr/local/bin
[root@docker01 opt]
# cd etcd-v3.0.12-linux-amd64


[root@docker01 etcd-v3.0.12-linux-amd64]
#


[root@docker01 etcd-v3.0.12-linux-amd64]
# cp etcd etcdctl /usr/local/bin/


[root@docker01 etcd-v3.0.12-linux-amd64]
# 


[root@docker01 etcd-v3.0.12-linux-amd64]
# mkdir -p /opt/etcd/data


[root@docker01 etcd-v3.0.12-linux-amd64]
# 


[root@docker01 etcd-v3.0.12-linux-amd64]
# chmod 755 /opt/etcd


[root@docker01 etcd-v3.0.12-linux-amd64]
# 


[root@docker01 etcd-v3.0.12-linux-amd64]
# mkdir /etc/etcd


[root@docker01 etcd-v3.0.12-linux-amd64]
#
2.1.4 创建相关目录并赋权
[root@docker01 etcd-v3.0.12-linux-amd64]
# mkdir -p /opt/etcd/data


[root@docker01 etcd-v3.0.12-linux-amd64]
# 


[root@docker01 etcd-v3.0.12-linux-amd64]
# chmod 755 /opt/etcd


[root@docker01 etcd-v3.0.12-linux-amd64]
# 


[root@docker01 etcd-v3.0.12-linux-amd64]
# mkdir /etc/etcd


[root@docker01 etcd-v3.0.12-linux-amd64]
#

2.2 创建etcd集群

2.2.1 创建etcd配置文件

  • docker01：

[root@docker01 etcd-v3.0.12-linux-amd64]
# echo '#[Member]



ETCD_NAME
=
"docker01"



ETCD_DATA_DIR
=
"/opt/etcd/data"



ETCD_LISTEN_PEER_URLS
=
"http://0.0.0.0:2380"



ETCD_LISTEN_CLIENT_URLS
=
"http://0.0.0.0:2379,http://0.0.0.0:4001"



#[Clustering]



ETCD_INITIAL_ADVERTISE_PEER_URLS
=
"http://192.168.0.121:2380"



ETCD_ADVERTISE_CLIENT_URLS
=
"http://192.168.0.121:2379,http://192.168.0.121:4001"



ETCD_INITIAL_CLUSTER
=
"docker01=http://192.168.0.121:2380,docker02=http://192.168.0.122:2380,docker03=http://192.168.0.123:2380"



ETCD_INITIAL_CLUSTER_TOKEN
=
"etcd-cluster"



ETCD_INITIAL_CLUSTER_STATE
=
"new"' > /etc/etcd/etcd.conf

  • docker02：

[root@docker01 etcd-v3.0.12-linux-amd64]
# echo '#[Member]



ETCD_NAME
=
"docker02"



ETCD_DATA_DIR
=
"/opt/etcd/data"



ETCD_LISTEN_PEER_URLS
=
"http://0.0.0.0:2380"



ETCD_LISTEN_CLIENT_URLS
=
"http://0.0.0.0:2379,http://0.0.0.0:4001"



#[Clustering]



ETCD_INITIAL_ADVERTISE_PEER_URLS
=
"http://192.168.0.122:2380"



ETCD_ADVERTISE_CLIENT_URLS
=
"http://192.168.0.122:2379,http://192.168.0.122:4001"



ETCD_INITIAL_CLUSTER
=
"docker01=http://192.168.0.121:2380,docker02=http://192.168.0.122:2380,docker03=http://192.168.0.123:2380"



ETCD_INITIAL_CLUSTER_TOKEN
=
"etcd-cluster"



ETCD_INITIAL_CLUSTER_STATE
=
"new"' > /etc/etcd/etcd.conf

  • docker03：

[root@docker01 etcd-v3.0.12-linux-amd64]
# echo '#[Member]



ETCD_NAME
=
"docker03"



ETCD_DATA_DIR
=
"/opt/etcd/data"



ETCD_LISTEN_PEER_URLS
=
"http://0.0.0.0:2380"



ETCD_LISTEN_CLIENT_URLS
=
"http://0.0.0.0:2379,http://0.0.0.0:4001"



#[Clustering]



ETCD_INITIAL_ADVERTISE_PEER_URLS
=
"http://192.168.0.123:2380"



ETCD_ADVERTISE_CLIENT_URLS
=
"http://192.168.0.123:2379,http://192.168.0.123:4001"



ETCD_INITIAL_CLUSTER
=
"docker01=http://192.168.0.121:2380,docker02=http://192.168.0.122:2380,docker03=http://192.168.0.123:2380"



ETCD_INITIAL_CLUSTER_TOKEN
=
"etcd-cluster"



ETCD_INITIAL_CLUSTER_STATE
=
"new"' > /etc/etcd/etcd.conf
2.2.2 配置etcd服务文件

以docker01节点为例，其它节点以此执行 。

[root@docker01 etcd-v3.0.12-linux-amd64]
# echo '[Unit]



Description
=Etcd Server



After
=network.target



After
=network-online.target



Wants
=network-online.target

 


[Service]



User
=root



Type
=notify



EnvironmentFile
=
-/etc/etcd/etcd.conf



ExecStart
=/usr/local/bin/etcd



Restart
=on-failure



RestartSec
=10s



LimitNOFILE
=
40000

 


[Install]



WantedBy
=multi-user.target
' > /etc/systemd/system/etcd.service


[root@docker01 etcd-v3.0.12-linux-amd64]
#
2.2.3 启动ectd服务

以docker01节点为例，其它节点以此执行 。

  • 使etcd.service文件修改生效

[root@docker01 etcd-v3.0.12-linux-amd64]
# systemctl daemon-reload


[root@docker01 etcd-v3.0.12-linux-amd64]
#

  • 设置etcd.service随系统自动启动

[root@docker01 etcd-v3.0.12-linux-amd64]
# systemctl enable etcd


[root@docker01 etcd-v3.0.12-linux-amd64]
#

  • 启动etcd服务

[root@docker01 etcd-v3.0.12-linux-amd64]
# systemctl start etcd   


[root@docker01 etcd-v3.0.12-linux-amd64]
#

  • 查看服务状态

[root@docker01 etcd-v3.0.12-linux-amd64]
# systemctl status etcd  


● etcd.service 
- Etcd Server


   Loaded: loaded (/etc/systemd/system/etcd.service; disabled; vendor preset: disabled)


   Active: active (running) since 四 
2024
-10-03 
16:30:03 CST; 6s ago


 Main PID: 
25120 (etcd)


    Tasks: 
7


   Memory: 
11.4M


   CGroup: /system.slice/etcd.service


           └─25120 /usr/local/bin/etcd







10月 
03 
16:30:03 docker01 etcd[25120]: published {Name:docker01 ClientURLs:[http://127.0.0.1:2379 http://192.168....7a03a5



10月 
03 
16:30:03 docker01 etcd[25120]: ready to serve client requests



10月 
03 
16:30:03 docker01 etcd[25120]: serving insecure client requests on 
127.0.0.1:2379, this is strongly discouraged!



10月 
03 
16:30:03 docker01 etcd[25120]: ready to serve client requests



10月 
03 
16:30:03 docker01 etcd[25120]: serving insecure client requests on 
192.168.0.121:2379, this is strongly d...raged!



10月 
03 
16:30:03 docker01 systemd[1]: Started Etcd Server.



10月 
03 
16:30:03 docker01 etcd[25120]: established a TCP streaming connection with peer 1b48f6b7ad694df1 (stream ...riter)



10月 
03 
16:30:03 docker01 etcd[25120]: established a TCP streaming connection with peer 1b48f6b7ad694df1 (stream ...riter)



10月 
03 
16:30:03 docker01 etcd[25120]: established a TCP streaming connection with peer 9110cc6981d65e50 (stream ...riter)



10月 
03 
16:30:03 docker01 etcd[25120]: established a TCP streaming connection with peer 9110cc6981d65e50 (stream ...riter)


Hint: Some lines were ellipsized, use 
-l to show 
in full.


[root@docker01 etcd-v3.0.12-linux-amd64]
#

2.3 查看etcd集群成员

2.3.1 查看etcd集群健康状态

  • docker01：

[root@docker01 etcd-v3.0.12-linux-amd64]
# etcdctl cluster-health


member 1b48f6b7ad694df1 is healthy: got healthy result from http://192.168.0.123:2379


member 87ef0a454df755ba is healthy: got healthy result from http://192.168.0.121:2379


member 9110cc6981d65e50 is healthy: got healthy result from http://192.168.0.122:2379


cluster is healthy


[root@docker01 etcd-v3.0.12-linux-amd64]
#

  • docker02：

[root@docker02 etcd-v3.0.12-linux-amd64]
# etcdctl cluster-health


member 1b48f6b7ad694df1 is healthy: got healthy result from http://192.168.0.123:2379


member 87ef0a454df755ba is healthy: got healthy result from http://192.168.0.121:2379


member 9110cc6981d65e50 is healthy: got healthy result from http://192.168.0.122:2379


cluster is healthy


[root@docker02 etcd-v3.0.12-linux-amd64]
#

  • docker03：

[root@docker03 etcd-v3.0.12-linux-amd64]
# etcdctl cluster-health


member 1b48f6b7ad694df1 is healthy: got healthy result from http://192.168.0.123:2379


member 87ef0a454df755ba is healthy: got healthy result from http://192.168.0.121:2379


member 9110cc6981d65e50 is healthy: got healthy result from http://192.168.0.122:2379


cluster is healthy


[root@docker03 etcd-v3.0.12-linux-amd64]
#
2.3.2 查看etcd集群成员

  • docker01：

[root@docker01 etcd-v3.0.12-linux-amd64]
# etcdctl member list


1b48f6b7ad694df1: 
name
=docker03 
peerURLs
=http://192.168.0.123:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.123:2379 
isLeader
=
false


87ef0a454df755ba: 
name
=docker01 
peerURLs
=http://192.168.0.121:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.121:2379 
isLeader
=
false


9110cc6981d65e50: 
name
=docker02 
peerURLs
=http://192.168.0.122:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.122:2379 
isLeader
=
true


[root@docker01 etcd-v3.0.12-linux-amd64]
#

  • docker02：

[root@docker02 etcd-v3.0.12-linux-amd64]
# etcdctl member list


1b48f6b7ad694df1: 
name
=docker03 
peerURLs
=http://192.168.0.123:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.123:2379 
isLeader
=
false


87ef0a454df755ba: 
name
=docker01 
peerURLs
=http://192.168.0.121:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.121:2379 
isLeader
=
false


9110cc6981d65e50: 
name
=docker02 
peerURLs
=http://192.168.0.122:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.122:2379 
isLeader
=
true


[root@docker02 etcd-v3.0.12-linux-amd64]
#

  • docker03：

[root@docker03 etcd-v3.0.12-linux-amd64]
# etcdctl member list


1b48f6b7ad694df1: 
name
=docker03 
peerURLs
=http://192.168.0.123:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.123:2379 
isLeader
=
false


87ef0a454df755ba: 
name
=docker01 
peerURLs
=http://192.168.0.121:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.121:2379 
isLeader
=
false


9110cc6981d65e50: 
name
=docker02 
peerURLs
=http://192.168.0.122:2380 
clientURLs
=http://127.0.0.1:2379,http://192.168.0.122:2379 
isLeader
=
true


[root@docker03 etcd-v3.0.12-linux-amd64]
#

原文链接： https://mp.weixin.qq.com/s?__biz=MzkxNzI1OTE3Mw==&mid=2247493134&idx=1&sn=9c6544a3ea2e828751c0907016bcdcba&chksm=c141f0c4f63679d23444ac858333daa3faf5fb23591a59628f3d3b4d553e8c59575561b6ccce&token=1641304794&lang=zh_CN#rd

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shuchaoyang
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