ntp configuration: omitted # It is recommended to configure the ntp service to ensure time consistency
etcd version: v3.3.9
Firewall and SELinux: Turn off firewall and SELinux
| Name |
addr |
Host |
note |
|---|---|---|---|
|
etcd1 |
172.24.8.71 |
etcd1.example.com |
|
|
etcd2 |
172.24.8.72 |
etcd2.example.com |
|
|
etcd3 |
172.24.8.73 |
etcd3.example.com |
|
1 # hostnamectl set-hostname etcd1.example.com
2 # hostnamectl set-hostname etcd2.example.com
3 # hostnamectl set-hostname etcd3.example.com
Two docker etcd cluster deployment
2.1 Install docker
See "docker version and installation".
2.2 etcd basic configuration
1 # mkdir -p /var/log/etcd/ #It is recommended to create the etcd log storage directory
2 # mkdir -p /data/etcd
3 # REGISTRY=gcr.io/etcd-development/etcd
4 # REGISTRY=quay.io/coreos/etcd #This warehouse is recommended
5 # ETCD_VERSION=latest
6 # TOKEN=my-etcd-01
7 # CLUSTER_STATE=new
8 # NAME_1=etcd1
9 # NAME_2=etcd2
10 # NAME_3=etcd3
11 # HOST_1=172.24.8.71
12 # HOST_2=172.24.8.72
13 # HOST_3=172.24.8.73
14 # CLUSTER=${NAME_1}=http://${HOST_1}:2380,${NAME_2}=http://${HOST_2}:2380,${NAME_3}=http://${HOST_3}:2380 #Set all node information for the cluster
15 # DATA_DIR=/data/etcd
Tip: All the above operations need to be operated on all nodes.
2.3 Start the docker etcd cluster
1 [[email protected] ~]# THIS_NAME=${NAME_1}
2 [[email protected] ~]# THIS_IP=${HOST_1}
3 [[email protected] ~]# docker run \
4 -p 2379:2379 \
5 -p 2380:2380 \
6 --volume=${DATA_DIR}:/etcd-data \
7 --name etcd ${REGISTRY}:${ETCD_VERSION} \
8 /usr/local/bin/etcd \
9 --data-dir=/etcd-data --name ${THIS_NAME} \
10 --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://0.0.0.0:2380 \
11 --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://0.0.0.0:2379 \
12 --initial-cluster ${CLUSTER} \
13 --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}
14
15 [[email protected] ~]# THIS_NAME=${NAME_2}
16 [[email protected] ~]# THIS_IP=${HOST_2}
17 [[email protected] ~]# docker run \
18 -p 2379:2379 \
19 -p 2380:2380 \
20 --volume=${DATA_DIR}:/etcd-data \
21 --name etcd ${REGISTRY}:${ETCD_VERSION} \
22 /usr/local/bin/etcd \
23 --data-dir=/etcd-data --name ${THIS_NAME} \
24 --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://0.0.0.0:2380 \
25 --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://0.0.0.0:2379 \
26 --initial-cluster ${CLUSTER} \
27 --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}
28
29 [[email protected] ~]# THIS_NAME=${NAME_3}
30 [[email protected] ~]# THIS_IP=${HOST_3}
31 [[email protected] ~]# docker run \
32 -p 2379:2379 \
33 -p 2380:2380 \
34 --volume=${DATA_DIR}:/etcd-data \
35 --name etcd ${REGISTRY}:${ETCD_VERSION} \
36 /usr/local/bin/etcd \
37 --data-dir=/etcd-data --name ${THIS_NAME} \
38 --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://0.0.0.0:2380 \
39 --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://0.0.0.0:2379 \
40 --initial-cluster ${CLUSTER} \
41 --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}
2.4 Confirm Verification
1 [[email protected] ~]# docker ps
1 [[email protected] ~]# docker ps
1 [[email protected] ~]# docker ps
1 [[email protected] ~]# docker exec -it 21e6cf6e5e89 /usr/local/bin/etcdctl cluster-health
1 [[email protected] ~]# netstat -nltp | grep 2380