helm部署MySQL主从架构8.0
1.1.更新chart仓库
# 更新chart仓库
helm repo add aliyun https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
helm repo add stable http://mirror.azure.cn/kubernetes/charts
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
# 搜索MySQL版本
helm search repo mysql
# 将包下载到本地
helm pull bitnami/mysql --version=9.19.1
tar zxvf mysql-9.19.1.tgz && cp mysql/values.yaml mysql-values.yaml
primary:
name: primary
command: []
args: []
lifecycleHooks: {}
hostAliases: []
configuration: |-
[mysqld]
default_authentication_plugin=mysql_native_password
skip-name-resolve
explicit_defaults_for_timestamp
basedir=/opt/bitnami/mysql
plugin_dir=/opt/bitnami/mysql/lib/plugin
port=3306
socket=/opt/bitnami/mysql/tmp/mysql.sock
datadir=/bitnami/mysql/data
tmpdir=/opt/bitnami/mysql/tmp
max_allowed_packet=16M
bind-address=*
# 作为临时解决方案，您可以禁止显示来自mysqld.log的警告消息。https://knowledge.broadcom.com/external/article/271693/latest-security-patch-generates-mysql-w.html
log_error_suppression_list='MY-013360'
pid-file=/opt/bitnami/mysql/tmp/mysqld.pid
log-error=/opt/bitnami/mysql/logs/mysqld.log
character-set-server=UTF8
collation-server=utf8_general_ci
slow_query_log=0
slow_query_log_file=/opt/bitnami/mysql/logs/mysqld.log
long_query_time=10.0
[client]
port=3306
socket=/opt/bitnami/mysql/tmp/mysql.sock
default-character-set=UTF8
plugin_dir=/opt/bitnami/mysql/lib/plugin
[manager]
port=3306
socket=/opt/bitnami/mysql/tmp/mysql.sock
pid-file=/opt/bitnami/mysql/tmp/mysqld.pid
existingConfigmap: ""
updateStrategy:
type: RollingUpdate
persistence:
enabled: true
existingClaim: ""
subPath: ""
storageClass: "managed-nfs-storage"
annotations: {}
accessModes:
- ReadWriteOnce
size: 200Gi
selector: {}
extraVolumes: []secondary:
name: secondary
replicaCount: 2
hostAliases: []
command: []
args: []
lifecycleHooks: {}
configuration: |-
[mysqld]
default_authentication_plugin=mysql_native_password
skip-name-resolve
explicit_defaults_for_timestamp
basedir=/opt/bitnami/mysql
plugin_dir=/opt/bitnami/mysql/lib/plugin
port=3306
socket=/opt/bitnami/mysql/tmp/mysql.sock
datadir=/bitnami/mysql/data
tmpdir=/opt/bitnami/mysql/tmp
max_allowed_packet=16M
bind-address=*
# 作为临时解决方案，您可以禁止显示来自mysqld.log的警告消息。https://knowledge.broadcom.com/external/article/271693/latest-security-patch-generates-mysql-w.html
log_error_suppression_list='MY-013360'
pid-file=/opt/bitnami/mysql/tmp/mysqld.pid
log-error=/opt/bitnami/mysql/logs/mysqld.log
character-set-server=UTF8
collation-server=utf8_general_ci
slow_query_log=0
slow_query_log_file=/opt/bitnami/mysql/logs/mysqld.log
long_query_time=10.0
[client]
port=3306
socket=/opt/bitnami/mysql/tmp/mysql.sock
default-character-set=UTF8
plugin_dir=/opt/bitnami/mysql/lib/plugin
[manager]
port=3306
socket=/opt/bitnami/mysql/tmp/mysql.sock
pid-file=/opt/bitnami/mysql/tmp/mysqld.pid
existingConfigmap: ""
persistence:
enabled: true
existingClaim: ""
subPath: ""
storageClass: "managed-nfs-storage"
annotations: {}
accessModes:
- ReadWriteOnce
size: 8Gi
selector: {}
extraVolumes: []kubectl create namespace mysql
helm install mysql-cluster mysql-9.19.1.tgz --namespace mysql --set useBundledSystemChart=true --set volumePermissions.enabled=true -f mysql-values.yaml
NAME: mysql-cluster
LAST DEPLOYED: Mon Feb 5 23:10:52 2024
NAMESPACE: mysql
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: mysql
CHART VERSION: 9.19.1
APP VERSION: 8.0.36
** Please be patient while the chart is being deployed **
Tip:
Watch the deployment status using the command: kubectl get pods -w --namespace mysql
Services:
echo Primary: mysql-cluster-primary.mysql.svc.cluster.local:3306
echo Secondary: mysql-cluster-secondary.mysql.svc.cluster.local:3306
Execute the following to get the administrator credentials:
echo Username: root
MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace mysql mysql-cluster -o jsonpath="{.data.mysql-root-password}" | base64 -d)
To connect to your database:
1. Run a pod that you can use as a client:
kubectl run mysql-cluster-client --rm --tty -i --restart='Never' --image docker.io/bitnami/mysql:5.7.43 --namespace mysql --env MYSQL_ROOT_PASSWORD=$MYSQL_ROOT_PASSWORD --command -- bash
2. To connect to primary service (read/write):
mysql -h mysql-cluster-primary.mysql.svc.cluster.local -uroot -p"$MYSQL_ROOT_PASSWORD"
3. To connect to secondary service (read-only):
mysql -h mysql-cluster-secondary.mysql.svc.cluster.local -uroot -p"$MYSQL_ROOT_PASSWORD"
kubectl get all -n mysql
NAME READY STATUS RESTARTS AGE
pod/mysql-cluster-primary-0 1/1 Running 0 69m
pod/mysql-cluster-secondary-0 1/1 Running 0 69m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/mysql-cluster-primary ClusterIP 10.107.166.168 <none> 3306/TCP 69m
service/mysql-cluster-primary-headless ClusterIP None <none> 3306/TCP 69m
service/mysql-cluster-secondary ClusterIP 10.101.7.132 <none> 3306/TCP 69m
service/mysql-cluster-secondary-headless ClusterIP None <none> 3306/TCP 69m
NAME READY AGE
statefulset.apps/mysql-cluster-primary 1/1 69m
statefulset.apps/mysql-cluster-secondary 1/1 69m
mysql 15:30:40.61
mysql 15:30:40.62 Welcome to the Bitnami mysql container
mysql 15:30:40.63 Subscribe to project updates by watching https://github.com/bitnami/containers
mysql 15:30:40.65 Submit issues and feature requests at https://github.com/bitnami/containers/issues
mysql 15:30:40.70
mysql 15:30:40.74 INFO ==> ** Starting MySQL setup **
mysql 15:30:40.90 INFO ==> Validating settings in MYSQL_*/MARIADB_* env vars
mysql 15:30:41.12 INFO ==> Initializing mysql database
mkdir: cannot create directory '/bitnami/mysql/data': Permission denied # 无法创建目录，权限被拒绝
2024-02-08T07:45:24.876894Z 15 [Warning] [MY-013360] [Server] Plugin mysql_native_password reported: ''mysql_native_password' is deprecated and will be removed in a future release. Please use caching_sha2_password instead
解决方案：configuration内加入log_error_suppression_list='MY-013360'，忽略报错。
apt install mysql-client -y# 登录主容器svc
mysql -uroot -h10.107.166.168 -p1qazZSE$
# 查看主从状态
# 查看File和Position的值，在从库配置中会显示。
show master status\G;
*************************** 1. row ***************************
File: mysql-bin.000007
Position: 157
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
ERROR:
No query specified# 登录从容器svc
mysql -uroot -h10.101.7.132 -p1qazZSE$
show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for source to send event
Master_Host: mysql-cluster-primary
Master_User: replicator
Master_Port: 3306
Connect_Retry: 10
Master_Log_File: mysql-bin.000007
Read_Master_Log_Pos: 157
Relay_Log_File: mysql-relay-bin.000016
Relay_Log_Pos: 373
Relay_Master_Log_File: mysql-bin.000007
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: 157
Relay_Log_Space: 799
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: 841
Master_UUID: e3278223-c655-11ee-806a-fe38b711638f
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Replica 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:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
1 row in set, 1 warning (0.00 sec)
ERROR:
No query specified
