碼上快樂

相關內容    簡體    繁體

etcd集群移除/添加節點

本文轉載自   查看原文   2019-12-30 12:01   1036    Kubernetes

###

一、etcd集群移除節點

1、查看集群節點

[root@linux-node1 ~]# etcdctl --endpoints=https://192.168.56.11:2379 --ca-file=/opt/kubernetes/ssl/ca.pem --cert-file=/opt/kubernetes/ssl/etcd.pem --key-file=/opt/kubernetes/ssl/etcd-key.pem    member list  
435fb0a8da627a4c: name=etcd-node2 peerURLs=https://192.168.56.12:2380 clientURLs=https://192.168.56.12:2379 isLeader=false
6566e06d7343e1bb: name=etcd-node1 peerURLs=https://192.168.56.11:2380 clientURLs=https://192.168.56.11:2379 isLeader=true
65421783297483vb: name=etcd-node3 peerURLs=https://192.168.56.13:2380 clientURLs=https://192.168.56.13:2379 isLeader=false

2、刪除節點

etcdctl member remove 65421783297483vb

3、再次查看集群，此節點已刪除

[root@linux-node1 ~]# etcdctl --endpoints=https://192.168.56.11:2379 --ca-file=/opt/kubernetes/ssl/ca.pem --cert-file=/opt/kubernetes/ssl/etcd.pem --key-file=/opt/kubernetes/ssl/etcd-key.pem    member list  
435fb0a8da627a4c: name=etcd-node2 peerURLs=https://192.168.56.12:2380 clientURLs=https://192.168.56.12:2379 isLeader=false
6566e06d7343e1bb: name=etcd-node1 peerURLs=https://192.168.56.11:2380 clientURLs=https://192.168.56.11:2379 isLeader=true
修改配置文件etcd.conf，修改參數ETCD_INITIAL_CLUSTER並移除節點信息，重啟etcd服務

 

二、etcd集群添加節點(帶安裝認證)　　

1、查看集群狀態

[root@uat-master02 ssl]# etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem   --endpoints="https://192.168.100.241:2379" member list
3c76e8c4b45726d7: name=etcd3 peerURLs=https://192.168.100.243:2380 clientURLs=https://192.168.100.243:2379 isLeader=false
95f01613d6ad24f5: name=etcd2 peerURLs=https://192.168.100.242:2380 clientURLs=https://192.168.100.242:2379 isLeader=true
a44b7472fb6879b5: name=etcd1 peerURLs=https://192.168.100.241:2380 clientURLs=https://192.168.100.241:2379 isLeader=false

2、重新生成server證書

#########因為在創建舊集群時etcd.json里面寫了證書認證的hosts要添加新節點須添加進去。重新生成證書
vim etcd.json
{
  "CN": "etcd",
  "hosts": [
        "192.168.100.241",
        "192.168.100.242",
        "192.168.100.243",
        # 這下面為新添加（一次把要添加的都寫上）
        "192.168.100.244",  
   ],
  "key": {
  "algo": "rsa",
  "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "BeiJing",
      "L": "BeiJing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}
####################生成新證書
cfssl gencert -ca=/opt/kubernetes/ssl/ca.pem -ca-key=/opt/kubernetes/ssl/ca-key.pem -config=/opt/kubernetes/ssl/ca-config.json -profile=kubernetes etcd.json | cfssljson -bare etcd
####################復制證書到所有節點
scp etcd*.pem  192.168.100.241:/opt/kubernetes/ssl
scp etcd*.pem  192.168.100.242:/opt/kubernetes/ssl
scp etcd*.pem  192.168.100.243:/opt/kubernetes/ssl
scp etcd*.pem  192.168.100.244:/opt/kubernetes/ssl
#############重啟現有節點etcd
systemctl restart etcd

3、添加新節點

# etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem   --endpoints="https://192.168.100.241:2379"   member add etcd4 https://192.168.100.244

Added member named etcd4 with ID e4af0c810ebe26da to cluster

ETCD_NAME="etcd4"
ETCD_INITIAL_CLUSTER="etcd1=https://192.168.100.241:2380,etcd2=https://192.168.100.242:2380,etcd3=https://192.168.100.243:2380,etcd4=https://192.168.100.244:2380"
ETCD_INITIAL_CLUSTER_STATE="existing"

********新節點的etcd配置文件必須包括以上輸出內容*********

4、修改新節點配置並啟動

############啟動新節點, 注意新節點必須指定 --initial-cluster-state[--initial-cluster-state=existing]
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
Documentation=https://github.com/coreos
[Service]
Type=notify
WorkingDirectory=/data/etcd/
ExecStart=/data/etcd/bin/etcd \
  --name=etcd2 \
  --cert-file=/data/etcd/ssl/server.pem \
  --key-file=/data/etcd/ssl/server-key.pem \
  --peer-cert-file=/data/etcd/ssl/peer.pem \
  --peer-key-file=/data/etcd/ssl/peer-key.pem \
  --trusted-ca-file=/data/etcd/ssl/ca.pem \
  --peer-trusted-ca-file=/data/etcd/ssl/ca.pem \
  --initial-advertise-peer-urls=https://192.168.100.244:2380 \
  --listen-peer-urls=https://192.168.100.244:2380 \
  --listen-client-urls=https://192.168.100.244:2379 \
  --advertise-client-urls=https://192.168.100.244:2379 \
  --initial-cluster-token=etcd-cluster-0 \
  --initial-cluster=etcd1=https://192.168.100.241:2380,etcd2=https://192.168.100.242:2380,etcd3=https://192.168.100.243:2380,etcd4=https://192.168.100.244:2380, \
  --initial-cluster-state=existing \
  --data-dir=/data/etcd \
  --snapshot-count=50000 \
  --auto-compaction-retention=1 \
  --max-request-bytes=10485760 \
  --quota-backend-bytes=8589934592
Restart=always
RestartSec=15
LimitNOFILE=65536
OOMScoreAdjust=-999

[Install]
WantedBy=multi-user.target
################################啟動
systemctl start etcd
systemctl enable etcd

5、查看節點信息

[root@uat-master02 ssl]# ../bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem   --endpoints="https://192.168.100.241:2379" member list
3c76e8c4b45726d7: name=etcd3 peerURLs=https://192.168.100.243:2380 clientURLs=https://192.168.100.243:2379 isLeader=false
95f01613d6ad24f5: name=etcd2 peerURLs=https://192.168.100.242:2380 clientURLs=https://192.168.100.242:2379 isLeader=true
a44b7472fb6879b5: name=etcd1 peerURLs=https://192.168.100.241:2380 clientURLs=https://192.168.100.241:2379 isLeader=false
e4af0c810ebe26da: name=etcd4 peerURLs=https://192.168.100.244:2380 clientURLs=https://192.168.100.244:2379 isLeader=false
***修改所有節點啟動文件
***所有節點啟動文件都修改–initial-cluster
***把所有節點都添加進去，以后重啟服務還能直接生效

　　

 

三、etcd集群添加節點(不帶安裝認證)

1、查看當前集群節點信息

# etcdctl member list --write-out=table
+------------------+---------+--------------------+--------------------------------+-----------------------------------------------------+------------+
|        ID        | STATUS  |        NAME        |           PEER ADDRS           |                    CLIENT ADDRS                     | IS LEARNER |
+------------------+---------+--------------------+--------------------------------+-----------------------------------------------------+------------+
| 44d8bc3300880bcd | started | sht-sgmhadoopdn-01 | http://sht-sgmhadoopdn-01:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-01:2379 |      false |
| d446fbe3296eb85a | started | sht-sgmhadoopdn-03 | http://sht-sgmhadoopdn-03:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-02:2379 |      false |
| e9136c1ad1754783 | started | sht-sgmhadoopdn-02 | http://sht-sgmhadoopdn-02:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-02:2379 |      false |
+------------------+---------+--------------------+--------------------------------+-----------------------------------------------------+------------+

2、添加新節點sht-sgmhadoopdn-04(172.16.101.66)

######添加集群節點對應hosts文件解析
# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.101.58    sht-sgmhadoopdn-01
172.16.101.59    sht-sgmhadoopdn-02
172.16.101.60    sht-sgmhadoopdn-03
172.16.101.66    sht-sgmhadoopdn-04
######在現有集群接點添加新節點
# etcdctl member add sht-sgmhadoopdn-04 --peer-urls="http://sht-sgmhadoopdn-04:2380"
Member 7796493c3943f891 added to cluster 69bef0b9ccf44365

ETCD_NAME="sht-sgmhadoopdn-04"
ETCD_INITIAL_CLUSTER="sht-sgmhadoopdn-01=http://sht-sgmhadoopdn-01:2380,sht-sgmhadoopdn-04=http://sht-sgmhadoopdn-04:2380,sht-sgmhadoopdn-03=http://sht-sgmhadoopdn-03:2380,sht-sgmhadoopdn-02=http://sht-sgmhadoopdn-02:2380"
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://sht-sgmhadoopdn-04:2380"
ETCD_INITIAL_CLUSTER_STATE="existing"

********新節點的etcd配置文件必須包括以上輸出內容*********

3、查看當前集群信息

# etcdctl member list --write-out=table
+------------------+-----------+--------------------+--------------------------------+-----------------------------------------------------+------------+
|        ID        |  STATUS   |        NAME        |           PEER ADDRS           |                    CLIENT ADDRS                     | IS LEARNER |
+------------------+-----------+--------------------+--------------------------------+-----------------------------------------------------+------------+
| 44d8bc3300880bcd |   started | sht-sgmhadoopdn-01 | http://sht-sgmhadoopdn-01:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-01:2379 |      false |
| 7796493c3943f891 | unstarted |                    | http://sht-sgmhadoopdn-04:2380 |                                                     |      false |
| d446fbe3296eb85a |   started | sht-sgmhadoopdn-03 | http://sht-sgmhadoopdn-03:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-02:2379 |      false |
| e9136c1ad1754783 |   started | sht-sgmhadoopdn-02 | http://sht-sgmhadoopdn-02:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-02:2379 |      false |
+------------------+-----------+--------------------+--------------------------------+-----------------------------------------------------+------------+

4、新節點配置etcd

###################etcd系統服務文件
# cat /usr/lib/systemd/system/etcd.service
[Unit]
Description=etcd service
Documentation=https://github.com/etcd-io/etcd
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
User=tnuser
Type=notify
EnvironmentFile=/usr/local/etcd/etcd.conf
WorkingDirectory=/usr/local/etcd
ExecStart=/usr/local/etcd/etcd
Restart=always
RestartSec=10s
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
##############################etcd配置文件
# cat /usr/local/etcd/etcd.conf
ETCD_NAME="sht-sgmhadoopdn-04"
ETCD_DATA_DIR="/usr/local/etcd/data"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster-01"
ETCD_INITIAL_CLUSTER_STATE="existing"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379"
ETCD_ADVERTISE_CLIENT_URLS="http://sht-sgmhadoopdn-01:2379,http://10.0.0.1:2379"
ETCD_LISTEN_PEER_URLS="http://0.0.0.0:2380"
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://sht-sgmhadoopdn-04:2380"
ETCD_INITIAL_CLUSTER="sht-sgmhadoopdn-01=http://sht-sgmhadoopdn-01:2380,sht-sgmhadoopdn-02=http://sht-sgmhadoopdn-02:2380,sht-sgmhadoopdn-03=http://sht-sgmhadoopdn-03:2380,sht-sgmhadoopdn-04=http://sht-sgmhadoopdn-04:2380"
ETCD_ENABLE_V2="true"
########################啟動新節點
# systemctl start etcd

5、再次查看集群狀態

# etcdctl member list --write-out=table
+------------------+---------+--------------------+--------------------------------+-----------------------------------------------------+------------+
|        ID        | STATUS  |        NAME        |           PEER ADDRS           |                    CLIENT ADDRS                     | IS LEARNER |
+------------------+---------+--------------------+--------------------------------+-----------------------------------------------------+------------+
| 44d8bc3300880bcd | started | sht-sgmhadoopdn-01 | http://sht-sgmhadoopdn-01:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-01:2379 |      false |
| 7796493c3943f891 | started | sht-sgmhadoopdn-04 | http://sht-sgmhadoopdn-04:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-01:2379 |      false |
| d446fbe3296eb85a | started | sht-sgmhadoopdn-03 | http://sht-sgmhadoopdn-03:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-02:2379 |      false |
| e9136c1ad1754783 | started | sht-sgmhadoopdn-02 | http://sht-sgmhadoopdn-02:2380 | http://10.0.0.1:2379,http://sht-sgmhadoopdn-02:2379 |      false |
+------------------+---------+--------------------+--------------------------------+-----------------------------------------------------+------------+
****將各節點etcd.conf配置文件的變量ETCD_INITIAL_CLUSTER添加新節點信息，然后依次重啟。

　

###


免責聲明！

本站轉載的文章為個人學習借鑒使用，本站對版權不負任何法律責任。如果侵犯了您的隱私權益，請聯系本站郵箱yoyou2525@163.com刪除。



猜您在找 etcd集群移除節點 etcd集群添加節點 現有rabbitmq集群添加新節點，移除舊節點(可以作為rabbitmq集群遷移使用) 使用 kubectl drain 從集群中移除節點 如何將rabbitmq集群中的某個節點移除. 如何將rabbitmq集群中的某個節點移除. Kubernetes集群添加節點 elasticsearch集群添加節點 Hadoop中正確地添加和移除節點 節點的操作 創建、添加、移除、移動、復制
 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM