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1、修改自己对应的命名空间

2、local pv的方式必须先创建好目录在给权限

3、sts部署文件密码都要修改好在部署

yaml资源文件如下：

#配置mysql的root密码再部署，如果部署了在修改root密码就会失败，必须在初始化就把root密码修改好
#部署采用的local pv的模式持久化本地#  local-sc.yml 
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:name: local-path
provisioner: kubernetes.io/no-provisioner
volumeBindingMode: WaitForFirstConsumer  #延迟绑定参数，很重要---
apiVersion: v1
kind: PersistentVolume
metadata:name: pv-mysql-1
spec :capacity:storage: 5GivolumeMode: FilesystemaccessModes:- ReadWriteOncepersistentVolumeReclaimPolicy: RetainstorageClassName: local-pathlocal:path: /data/mysql-1nodeAffinity:required:nodeSelectorTerms:- matchExpressions:- key: kubernetes.io/hostnameoperator: Invalues :- cole-k8s-worker1---
apiVersion: v1
kind: PersistentVolume
metadata:name: pv-mysql-2
spec :capacity:storage: 5GivolumeMode: FilesystemaccessModes:- ReadWriteOncepersistentVolumeReclaimPolicy: RetainstorageClassName: local-pathlocal:path: /data/mysql-2nodeAffinity:required:nodeSelectorTerms:- matchExpressions:- key: kubernetes.io/hostnameoperator: Invalues :- cole-k8s-worker2---
apiVersion: v1
kind: PersistentVolume
metadata:name: pv-mysql-3
spec :capacity:storage: 5GivolumeMode: FilesystemaccessModes:- ReadWriteOncepersistentVolumeReclaimPolicy: RetainstorageClassName: local-pathlocal:path: /data/mysql-3nodeAffinity:required:nodeSelectorTerms:- matchExpressions:- key: kubernetes.io/hostnameoperator: Invalues :- cole-k8s-worker3---#application/mysql/mysql-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:name: mysqlnamespace: public-middlabels:app: mysql
data:master.cnf: |# Apply this config only on the master.[mysqld]log-binslave.cnf: |# Apply this config only on slaves.[mysqld]super-read-only
---
# application/mysql/mysql-services.yaml
# Headless service for stable DNS entries of StatefulSet members.
apiVersion: v1
kind: Service
metadata:name: mysqlnamespace: public-middlabels:app: mysql
spec:ports:- name: mysqlport: 3306clusterIP: Noneselector:app: mysql
---
# Client service for connecting to any MySQL instance for reads.
# For writes, you must instead connect to the master: mysql-0.mysql.
apiVersion: v1
kind: Service
metadata:name: mysql-readnamespace: public-middlabels:app: mysql
spec:ports:- name: mysqlport: 3306selector:app: mysql
---
#application/mysql/mysql-statefulset.yamlapiVersion: apps/v1
kind: StatefulSet
metadata:name: mysqlnamespace: public-midd
spec:selector:matchLabels:app: mysqlserviceName: mysqlreplicas: 3template:metadata:labels:app: mysqlspec:# 设置初始化容器，进行一些准备工作initContainers:- name: init-mysqlimage: mysql:5.7# 为每个MySQL节点配置service-id# 如果节点序号是0，则使用master的配置， 其余节点使用slave的配置command:- bash- "-c"- |set -ex# Generate mysql server-id from pod ordinal index.[[ `uname -n` =~ -([0-9]+)$ ]] || exit 1ordinal=${BASH_REMATCH[1]}echo [mysqld] > /mnt/conf.d/server-id.cnf# Add an offset to avoid reserved server-id=0 value.echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf# Copy appropriate conf.d files from config-map to emptyDir.if [[ $ordinal -eq 0 ]]; thencp /mnt/config-map/master.cnf /mnt/conf.d/elsecp /mnt/config-map/slave.cnf /mnt/conf.d/fivolumeMounts:- name: time-localtimemountPath: /etc/localtimereadOnly: true- name: confmountPath: /mnt/conf.d- name: config-mapmountPath: /mnt/config-map- name: clone-mysqlimage: yizhiyong/xtrabackup:latest# 为除了节点序号为0的主节点外的其它节点，备份前一个节点的数据command:- bash- "-c"- |set -ex# Skip the clone if data already exists.[[ -d /var/lib/mysql/mysql ]] && exit 0# Skip the clone on master (ordinal index 0).[[ `uname -n` =~ -([0-9]+)$ ]] || exit 1ordinal=${BASH_REMATCH[1]}[[ $ordinal -eq 0 ]] && exit 0# Clone data from previous peer.ncat --recv-only mysql-$(($ordinal-1)).mysql 3307 | xbstream -x -C /var/lib/mysql# Prepare the backup.xtrabackup --prepare --target-dir=/var/lib/mysqlvolumeMounts:- name: time-localtimemountPath: /etc/localtimereadOnly: true- name: datamountPath: /var/lib/mysqlsubPath: mysql- name: confmountPath: /etc/mysql/conf.dcontainers:- name: mysqlimage: mysql:5.7# 设置支持免密登录env:# - name: MYSQL_ALLOW_EMPTY_PASSWORD# value: "1"- name: MYSQL_ROOT_PASSWORDvalue: "123456"ports:- name: mysqlcontainerPort: 3306volumeMounts:- name: time-localtimemountPath: /etc/localtimereadOnly: true- name: datamountPath: /var/lib/mysqlsubPath: mysql- name: confmountPath: /etc/mysql/conf.dresources:# 设置启动pod需要的资源，官方文档上需要500m cpu，1Gi memory。# 我本地测试的时候，会因为资源不足，报1 Insufficient cpu, 1 Insufficient memory错误，所以我改小了点requests:# m是千分之一的意思，100m表示需要0.1个cpucpu: 100m# Mi是兆的意思，需要100M 内存memory: 100MilivenessProbe:# 使用mysqladmin ping命令，对MySQL节点进行探活检测# 在节点部署完30秒后开始，每10秒检测一次，超时时间为5秒exec:command: [ "mysqladmin", "ping" ]initialDelaySeconds: 30periodSeconds: 10timeoutSeconds: 5readinessProbe:# 对节点服务可用性进行检测， 启动5秒后开始，每2秒检测一次，超时时间1秒exec:# Check we can execute queries over TCP (skip-networking is off).command: [ "mysql", "-h", "127.0.0.1", "-p123456", "-e", "SELECT 1" ]initialDelaySeconds: 5periodSeconds: 2timeoutSeconds: 1- name: xtrabackupimage: yizhiyong/xtrabackup:latestports:- name: xtrabackupcontainerPort: 3307# 开始进行备份文件校验、解析和开始同步command:- bash- "-c"- |set -excd /var/lib/mysql# Determine binlog position of cloned data, if any.if [[ -f xtrabackup_slave_info && "x$(<xtrabackup_slave_info)" != "x" ]]; then# XtraBackup already generated a partial "CHANGE MASTER TO" query# because we're cloning from an existing slave. (Need to remove the tailing semicolon!)cat xtrabackup_slave_info | sed -E 's/;$//g' > change_master_to.sql.in# Ignore xtrabackup_binlog_info in this case (it's useless).rm -f xtrabackup_slave_info xtrabackup_binlog_infoelif [[ -f xtrabackup_binlog_info ]]; then# We're cloning directly from master. Parse binlog position.[[ `cat xtrabackup_binlog_info` =~ ^(.*?)[[:space:]]+(.*?)$ ]] || exit 1rm -f xtrabackup_binlog_info xtrabackup_slave_infoecho "CHANGE MASTER TO MASTER_LOG_FILE='${BASH_REMATCH[1]}',\MASTER_LOG_POS=${BASH_REMATCH[2]}" > change_master_to.sql.infi# Check if we need to complete a clone by starting replication.if [[ -f change_master_to.sql.in ]]; thenecho "Waiting for mysqld to be ready (accepting connections)"until mysql -h 127.0.0.1 -p"123456" -e "SELECT 1"; do sleep 1; doneecho "Initializing replication from clone position"mysql -h 127.0.0.1 -p"123456"\-e "$(<change_master_to.sql.in), \MASTER_HOST='mysql-0.mysql', \MASTER_USER='root', \MASTER_PASSWORD='123456', \MASTER_CONNECT_RETRY=10; \START SLAVE;" || exit 1# In case of container restart, attempt this at-most-once.mv change_master_to.sql.in change_master_to.sql.origfi# Start a server to send backups when requested by peers.exec ncat --listen --keep-open --send-only --max-conns=1 3307 -c \"xtrabackup --backup --slave-info --stream=xbstream --host=127.0.0.1 --user=root --password=123456"volumeMounts:- name: time-localtimemountPath: /etc/localtimereadOnly: true- name: datamountPath: /var/lib/mysqlsubPath: mysql- name: confmountPath: /etc/mysql/conf.dresources:requests:cpu: 100mmemory: 100Mivolumes:- name: time-localtimehostPath:path: /etc/localtime- name: confemptyDir: { }- name: config-mapconfigMap:name: mysql# 设置PVCvolumeClaimTemplates:- metadata:name: data       spec:storageClassName: local-pathaccessModes: [ "ReadWriteOnce" ]resources:requests:storage: 5Gi