K8s NetworkPolicyLimitRange和ResourceQuota详解K8s运行ZooKeeper,Mysql,Jenkins集群K8s集群及应用监控Prometheus
Posted yong_shh
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1. 基于 NetworkPolicy 限制 magedu namespace 中的所有 pod 不能跨 namespace 访问 (只能访问当前 namespace 中的所有 pod)。
#在default下创建2个deploy, centos7-default和nginx1-default
root@k8s-master1:~/20230328# vim centos7-default.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: centos7-default
name: centos7-default
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: centos7-default
template:
metadata:
labels:
app: centos7-default
spec:
containers:
- image: centos:centos7.9.2009
name: centos
command:
- sleep
- "50000000"
root@k8s-master1:~/20230328# kubectl apply -f centos7-default.yaml
deployment.apps/centos7-default created
root@k8s-master1:~/20230328# kubectl create deploy nginx1-default --image=nginx
deployment.apps/nginx1-default created
#查看default下创建的deploy
root@k8s-master1:~/20230328# kubectl get pods --show-labels
NAME READY STATUS RESTARTS AGE LABELS
centos7-default-7cff9984c9-t7sdp 1/1 Running 0 9m50s app=centos7-default,pod-template-hash=7cff9984c9
nginx1-default-76d65dfb67-gsdm5 1/1 Running 0 15s app=nginx1-default,pod-template-hash=76d65dfb67
root@k8s-master1:~/20230328# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
centos7-default-7cff9984c9-t7sdp 1/1 Running 0 10m 10.200.218.71 192.168.7.113 <none> <none>
nginx1-default-76d65dfb67-gsdm5 1/1 Running 0 75s 10.200.151.200 192.168.7.112 <none> <none>
#创建namespace magedu，并在此空间下创建2个deploy
root@k8s-master1:~/20230328# cat centos7-magedu.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: centos7-magedu
name: centos7-magedu
namespace: magedu
spec:
replicas: 1
selector:
matchLabels:
app: centos7-magedu
template:
metadata:
labels:
app: centos7-magedu
spec:
containers:
- image: centos:centos7.9.2009
name: centos
command:
- sleep
- "50000000"
root@k8s-master1:~/20230328# kubectl apply -f centos7-magedu.yaml
deployment.apps/centos7-magedu created
root@k8s-master1:~/20230328# kubectl create deploy nginx2-magedu --image=nginx --namespace magedu
deployment.apps/nginx2-magedu created
#查看magedu下创建的资源
root@k8s-master1:~/20230328# kubectl get pods -n magedu --show-labels
NAME READY STATUS RESTARTS AGE LABELS
centos7-magedu-bc6b4665f-9g6zh 1/1 Running 0 25m app=centos7-magedu,pod-template-hash=bc6b4665f
nginx2-magedu-5ddc8898d6-v98v4 1/1 Running 0 7m54s app=nginx2-magedu,pod-template-hash=5ddc8898d6
root@k8s-master1:~/20230328# kubectl get pods -n magedu -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
centos7-magedu-bc6b4665f-9g6zh 1/1 Running 0 24m 10.200.218.1 192.168.7.111 <none> <none>
nginx2-magedu-5ddc8898d6-v98v4 1/1 Running 0 7m45s 10.200.151.199 192.168.7.112 <none> <none>
#进入default空间下centos7-default pod访问magedu空间下nginx2-magedu pod服务，可正常访问
root@k8s-master1:~/20230328# kubectl exec -it centos7-default-7cff9984c9-t7sdp bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
[root@centos7-default-7cff9984c9-t7sdp /]# curl 10.200.151.199
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html color-scheme: light dark;
body width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
#进入magedu空间下centos7-magedu的pod,访问default空间下nginx1-default服务，访问正常
root@k8s-master1:~/20230328# kubectl exec -it centos7-magedu-bc6b4665f-9g6zh bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
[root@centos7-magedu-bc6b4665f-9g6zh /]# curl 10.200.151.200
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html color-scheme: light dark;
body width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
#创建networkpolicy
root@k8s-master1:~# vi Egress-magedu.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: egress-access-networkpolicy
namespace: magedu
spec:
policyTypes:
- Egress
podSelector:
matchLabels:
egress:
- to:
- podSelector:
matchLabels:
root@k8s-master1:~/20230328# kubectl apply -f Egress-magedu.yaml
networkpolicy.networking.k8s.io/egress-access-networkpolicy created
#查看刚创建的networkpolicy
root@k8s-master1:~/20230328# kubectl get networkpolicy -n magedu
NAME POD-SELECTOR AGE
egress-access-networkpolicy <none> 17s
#列出default和magedu命名空间下的pod
root@k8s-master1:~/20230328# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
centos7-default-7cff9984c9-t7sdp 1/1 Running 0 3h46m 10.200.218.71 192.168.7.113
nginx1-default-76d65dfb67-gsdm5 1/1 Running 0 3h36m 10.200.151.200 192.168.7.112
root@k8s-master1:~/20230328# kubectl get pods -n magedu -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
centos7-magedu-bc6b4665f-9g6zh 1/1 Running 0 4h7m 10.200.218.1 192.168.7.111
nginx2-magedu-5ddc8898d6-v98v4 1/1 Running 0 3h50m 10.200.151.199 192.168.7.112
#default下pod能访问magedu空间下pod, 正常访问
root@k8s-master1:~/20230328# kubectl exec -it centos7-default-7cff9984c9-t7sdp bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
[root@centos7-default-7cff9984c9-t7sdp /]# curl 10.200.151.199
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html color-scheme: light dark;
body width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
#magedu下pod访问default空间下pod, 不能正常访问
root@k8s-master1:~/20230328# kubectl exec -it centos7-magedu-bc6b4665f-9g6zh bash -n magedu kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. [root@centos7-magedu-bc6b4665f-9g6zh /]# curl 10.200.151.200 ^C
##magedu下pod访问同命名空间下pod, 正常访问
root@k8s-master1:~/20230328# kubectl exec -it centos7-magedu-bc6b4665f-9g6zh bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
[root@centos7-magedu-bc6b4665f-9g6zh /]# curl 10.200.151.199
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html color-scheme: light dark;
body width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
总结：网络策略生效后，其它namespace可以访问magedu namespace内的服务，magedu内的pod无法访问外部的服务
2. 在 kubernetes 环境部署 zookeeper 集群并基于 NFS 或 StorageClass 等方式实现创建持久化。
#下载jdk8镜像
root@k8s-master1:/opt/k8s-data# docker pull elevy/slim_java:8
8: Pulling from elevy/slim_java
88286f41530e: Downloading
7141511c4dad: Download complete
fd529fe251b3: Download complete
8: Pulling from elevy/slim_java
88286f41530e: Pull complete
7141511c4dad: Pull complete
fd529fe251b3: Pull complete
Digest: sha256:044e42fb89cda51e83701349a9b79e8117300f4841511ed853f73caf7fc98a51
Status: Downloaded newer image for elevy/slim_java:8
docker.io/elevy/slim_java:8
#镜像重命名,打tag
root@k8s-master1:/opt/k8s-data# docker tag docker.io/elevy/slim_java:8 harbor.magedu.net/baseimages/slim_java:8
root@k8s-master1:/opt/k8s-data# docker login harbor.magedu.net
Username: admin
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
#push到本地镜像仓库
root@k8s-master1:/opt/k8s-data# docker push harbor.magedu.net/baseimages/slim_java:8
The push refers to repository [harbor.magedu.net/baseimages/slim_java]
e053edd72ca6: Pushed
aba783efb1a4: Pushed
5bef08742407: Pushed
8: digest: sha256:817d0af5d4f16c29509b8397784f5d4ec3accb1bfde4e474244ed3be7f41a604 size: 952
##修改dockerfile 依赖镜像地址
root@k8s-master1:/opt/k8s-data# cd dockerfile/web/magedu/zookeeper/
FROM harbor.magedu.net/baseimages/slim_java:8
##修改编译脚本镜像地址
root@k8s-master1:/opt/k8s-data/dockerfile/web/magedu/zookeeper# vi build-command.sh
docker build -t harbor.magedu.net/magedu/zookeeper:$TAG .
docker push harbor.magedu.net/magedu/zookeeper:$TAG
##编译并上传镜像
root@k8s-master1:/opt/k8s-data/dockerfile/web/magedu/zookeeper# bash build-command.sh v3.4.14
5bef08742407: Mounted from baseimages/slim_java
v3.4.14: digest: sha256:f10eb1634d0d2d5eae520c0b9b170c00ef9a209c3b614139bc3207073509987c size: 2621
#测试镜像
root@k8s-master1:/opt/k8s-data/dockerfile/web/magedu/zookeeper# docker run -it --rm harbor.magedu.net/magedu/zookeeper:v3.4.14
2023-03-28 14:28:46,666 [myid:] - INFO [main:ServerCnxnFactory@117] - Using org.apache.zookeeper.server.NioserverCnxnFactory as server connection factory
2023-03-28 14:28:46,679 [myid:] - INFO [main:NIOServerCnxnFactory@89] - binding to port 0.0.0.0/0.0.0.0:2181
##NFS 服务器创建zookeeper的pv数据目录
root@haproxy1:~# mkdir -p /data/k8sdata/magedu/zookeeper-datadir-1
root@haproxy1:~# mkdir -p /data/k8sdata/magedu/zookeeper-datadir-2
root@haproxy1:~# mkdir -p /data/k8sdata/magedu/zookeeper-datadir-3
##NFS配置共享目录
root@haproxy1:~# vi /etc/exports
/data/k8sdata *(rw,no_root_squash,no_subtree_check)
##生效NFS配置
root@haproxy1:~# exportfs -r
##master1测试NFS服务
root@k8s-master1:~# showmount -e 172.31.7.109
Export list for 172.31.7.109:
/data/k8sdata *
#创建PV和PVC
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper/pv# kubectl apply -f .
persistentvolume/zookeeper-datadir-pv-1 created
persistentvolume/zookeeper-datadir-pv-2 created
persistentvolume/zookeeper-datadir-pv-3 created
persistentvolumeclaim/zookeeper-datadir-pvc-1 created
persistentvolumeclaim/zookeeper-datadir-pvc-2 created
persistentvolumeclaim/zookeeper-datadir-pvc-3 created
#查看创建的PVC
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper/pv# kubectl get pvc -n magedu
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
zookeeper-datadir-pvc-1 Bound zookeeper-datadir-pv-1 20Gi RWO 47s
zookeeper-datadir-pvc-2 Bound zookeeper-datadir-pv-2 20Gi RWO 47s
zookeeper-datadir-pvc-3 Bound zookeeper-datadir-pv-3 20Gi RWO 47s
#修改zookeeper镜像地址
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# vim zookeeper.yaml
image: harbor.magedu.net/magedu/zookeeper:v3.4.14
#部署zookeeper
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# kubectl apply -f zookeeper.yaml
service/zookeeper created
service/zookeeper1 created
service/zookeeper2 created
service/zookeeper3 created
deployment.apps/zookeeper1 created
deployment.apps/zookeeper2 created
deployment.apps/zookeeper3 created
#查看创建的zookeeper pod和svc信息
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# kubectl get pod,svc -n magedu
NAME READY STATUS RESTARTS AGE
pod/zookeeper1-6c75b979c6-r6txt 1/1 Running 0 113s
pod/zookeeper2-7b899bbf59-zhd25 1/1 Running 0 113s
pod/zookeeper3-7ddb69695d-gf8gp 1/1 Running 0 113s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/zookeeper ClusterIP 10.100.70.62 <none> 2181/TCP 114s
service/zookeeper1 NodePort 10.100.81.96 <none> 2181:32181/TCP,2888:43358/TCP,3888:31343/TCP 114s
service/zookeeper2 NodePort 10.100.52.199 <none> 2181:32182/TCP,2888:32121/TCP,3888:34179/TCP 114s
service/zookeeper3 NodePort 10.100.168.98 <none> 2181:32183/TCP,2888:32821/TCP,3888:50631/TCP 113s
#验证zookeeper集群状态，是选举关系
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# kubectl -n magedu exec -it zookeeper1-6c75b979c6-r6txt -- /zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
ZooKeeper remote JMX Port set to 9010
ZooKeeper remote JMX authenticate set to false
ZooKeeper remote JMX ssl set to false
ZooKeeper remote JMX log4j set to true
Using config: /zookeeper/bin/../conf/zoo.cfg
Mode: follower
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# kubectl -n magedu exec -it zookeeper2-7b899bbf59-zhd25 -- /zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
ZooKeeper remote JMX Port set to 9010
ZooKeeper remote JMX authenticate set to false
ZooKeeper remote JMX ssl set to false
ZooKeeper remote JMX log4j set to true
Using config: /zookeeper/bin/../conf/zoo.cfg
Mode: follower
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# kubectl -n magedu exec -it zookeeper3-7ddb69695d-gf8gp -- /zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
ZooKeeper remote JMX Port set to 9010
ZooKeeper remote JMX authenticate set to false
ZooKeeper remote JMX ssl set to false
ZooKeeper remote JMX log4j set to true
Using config: /zookeeper/bin/../conf/zoo.cfg
Mode: leader
3. 在 Kubernetes 环境部署基于 StatefulSet 运行 mysql 一主多从并基于 NFS 或 StorageClass 等方式实现数据持久化。
3.1 准备基础镜像
#下载mysql镜像
root@k8s-master1:~# docker pull mysql:5.7.36
#镜像重命名
root@k8s-master1:~# docker tag mysql:5.7.36 harbor.magedu.net/magedu/mysql:5.7.36
#推送到本地镜像仓库
root@k8s-master1:~# docker push harbor.magedu.net/magedu/mysql:5.7.36
#下载xtrabackup镜像
root@k8s-master1:~# docker pull zhangshijie/xtrabackup:1.0
#镜像重命名
root@k8s-master1:~# docker tag zhangshijie/xtrabackup:1.0 harbor.magedu.net/magedu/xtrabackup:1.0
#推送到本地镜像仓库
root@k8s-master1:~# docker push harbor.magedu.net/magedu/xtrabackup:1.0
3.2 创建mysql存储
#NFS服务器创建mysql存储目录
root@haproxy1:~# mkdir -p /data/k8sdata/magedu/mysql-datadir-1..6
#切换到mysql部署目录
root@k8s-master1:~# cd /opt/k8s-data/yaml/magedu/mysql/
#创建pv
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl apply -f pv/
persistentvolume/mysql-datadir-1 created
persistentvolume/mysql-datadir-2 created
persistentvolume/mysql-datadir-3 created
persistentvolume/mysql-datadir-4 created
persistentvolume/mysql-datadir-5 created
persistentvolume/mysql-datadir-6 created
#查看pv
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
mysql-datadir-1 50Gi RWO Retain Available 18s
mysql-datadir-2 50Gi RWO Retain Available 18s
mysql-datadir-3 50Gi RWO Retain Available 18s
mysql-datadir-4 50Gi RWO Retain Available 18s
mysql-datadir-5 50Gi RWO Retain Available 18s
mysql-datadir-6 50Gi RWO Retain Available 18s
3.3 部署mysql
#修改镜像地址
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# grep -n "image" mysql-statefulset.yaml
19: image: harbor.magedu.net/magedu/mysql:5.7.36
43: image: harbor.magedu.net/magedu/xtrabackup:1.0
67: image: harbor.magedu.net/magedu/mysql:5.7.36
98: image: harbor.magedu.net/magedu/xtrabackup:1.0
#创建statefulset mysql,configmap,service
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl apply -f .
configmap/mysql created
service/mysql created
service/mysql-read created
statefulset.apps/mysql created
#查看生成的pod,svc资源
root@k8s-master1:/opt/k8s-data/yaml/magedu/zookeeper# kubectl get pod,svc -n magedu
NAME READY STATUS RESTARTS AGE
pod/mysql-0 2/2 Running 0 9m11s
pod/mysql-1 2/2 Running 1 (7m8s ago) 7m55s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/mysql ClusterIP None <none> 3306/TCP 9m12s
service/mysql-read ClusterIP 10.100.163.220 <none> 3306/TCP 9m12s
3.4 验证
#修改副本为3
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# vi mysql-statefulset.yaml
replicas: 3
#执行statefulset
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl apply -f mysql-statefulset.yaml
statefulset.apps/mysql configured
#查看执行后的pod
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl get pod -n magedu
NAME READY STATUS RESTARTS AGE
mysql-0 2/2 Running 0 19m
mysql-1 2/2 Running 1 (17m ago) 17m
mysql-2 2/2 Running 1 (65s ago) 2m15s
#查看主节点状态
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl exec -it mysql-0 bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
Defaulted container "mysql" out of: mysql, xtrabackup, init-mysql (init), clone-mysql (init)
root@mysql-0:/# mysql
Welcome to the MySQL monitor. Commands end with ; or \\g.
Your MySQL connection id is 817
Server version: 5.7.36-log MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.
mysql> show master status \\G;
*************************** 1. row ***************************
File: mysql-0-bin.000003
Position: 154
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
ERROR:
No query specified
#从节点mysql-1,mysql-2状态
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl exec -it mysql-1 bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
Defaulted container "mysql" out of: mysql, xtrabackup, init-mysql (init), clone-mysql (init)
root@mysql-1:/# mysql
Welcome to the MySQL monitor. Commands end with ; or \\g.
Your MySQL connection id is 828
Server version: 5.7.36 MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.
mysql> show slave status \\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: mysql-0.mysql
Master_User: root
Master_Port: 3306
Connect_Retry: 10
Master_Log_File: mysql-0-bin.000003
Read_Master_Log_Pos: 154
Relay_Log_File: mysql-1-relay-bin.000002
Relay_Log_Pos: 322
Relay_Master_Log_File: mysql-0-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 154
Relay_Log_Space: 531
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 100
Master_UUID: 59d3b5ec-cefe-11ed-8c8b-3ee650365657
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
ERROR:
No query specified
mysql> exit
Bye
root@mysql-1:/# exit
exit
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl exec -it mysql-2 bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
Defaulted container "mysql" out of: mysql, xtrabackup, init-mysql (init), clone-mysql (init)
root@mysql-2:/# mysql
Welcome to the MySQL monitor. Commands end with ; or \\g.
Your MySQL connection id is 287
Server version: 5.7.36 MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.
mysql> show slave status \\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: mysql-0.mysql
Master_User: root
Master_Port: 3306
Connect_Retry: 10
Master_Log_File: mysql-0-bin.000003
Read_Master_Log_Pos: 154
Relay_Log_File: mysql-2-relay-bin.000002
Relay_Log_Pos: 322
Relay_Master_Log_File: mysql-0-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 154
Relay_Log_Space: 531
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 100
Master_UUID: 59d3b5ec-cefe-11ed-8c8b-3ee650365657
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.01 sec)
ERROR:
No query specified
#在主节点创建新数据库，看是否同步到从节点
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl exec -it mysql-0 bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
Defaulted container "mysql" out of: mysql, xtrabackup, init-mysql (init), clone-mysql (init)
root@mysql-0:/# mysql
Welcome to the MySQL monitor. Commands end with ; or \\g.
Your MySQL connection id is 927
Server version: 5.7.36-log MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.
mysql> create database magedu;
Query OK, 1 row affected (0.03 sec)
mysql> show databases;
+------------------------+
| Database |
+------------------------+
| information_schema |
| magedu |
| mysql |
| performance_schema |
| sys |
| xtrabackup_backupfiles |
+------------------------+
6 rows in set (0.02 sec)
#从库查看数据库同步
root@k8s-master1:/opt/k8s-data/yaml/magedu/mysql# kubectl exec -it mysql-1 bash -n magedu
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
Defaulted container "mysql" out of: mysql, xtrabackup, init-mysql (init), clone-mysql (init)
root@mysql-1:/# mysql
Welcome to the MySQL monitor. Commands end with ; or \\g.
Your MySQL connection id is 922
Server version: 5.7.36 MySQL Community Server (GPL)
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.
mysql> show databases;
+------------------------+
| Database |
+------------------------+
| information_schema |
| magedu |
| mysql |
3.5 样本分布K-S检验 ——python实战
文章目录
import tensorflow as tf
print("TensorFlow version:", tf
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