尝试了很多版本的mysql镜像，都存在这样那样的的问题。原始需求中，需要同时支持x86_64(AMD64)和aarch64(ARM64V8)，最后找到Oracle官方出品的MySQL-Server 8.0镜像包，作为基础镜像包，并在其基础上做一些定制。当然还存在一些问题，比如my.cnf通过configmap定制等等，后续慢慢优化补充。
my.cnf[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
secure-file-priv=/var/lib/mysql-files
user=mysql
pid-file=/var/run/mysqld/mysqld.pid
gtid_mode=ON
enforce_gtid_consistency=ON
skip-host-cache
skip-name-resolve
authentication_policy=mysql_native_password
binlog_cache_size=1M
binlog_format=row
binlog_expire_logs_seconds=2592000
replica_skip_errors=1062
!includedir /etc/my.cnf.d/
entrypoint.sh为避免覆盖原始启动文件，将其复制一份，命名为docker-entrypoint.sh
#!/bin/bash
# Copyright (c) 2017, 2021, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
set -e
echo "[Entrypoint] MySQL Docker Image 8.0.28-1.2.7-server"
# Fetch value from server config
# We use mysqld --verbose --help instead of my_print_defaults because the
# latter only show values present in config files, and not server defaults
_get_config() {
local conf="$1"; shift
"$@" --verbose --help 2>/dev/null | grep "^$conf" | awk '$1 == "'"$conf"'" { print $2; exit }'
}
# Generate a random password
_mkpw() {
letter=$(cat /dev/urandom| tr -dc a-zA-Z | dd bs=1 count=16 2> /dev/null )
number=$(cat /dev/urandom| tr -dc 0-9 | dd bs=1 count=8 2> /dev/null)
special=$(cat /dev/urandom| tr -dc '=+@#%^&*_.,;:?/' | dd bs=1 count=8 2> /dev/null)
echo $letter$number$special | fold -w 1 | shuf | tr -d '\n'
}
# If command starts with an option, prepend mysqld
# This allows users to add command-line options without
# needing to specify the "mysqld" command
if [ "${1:0:1}" = '-' ]; then
set -- mysqld "$@"
fi
# Check if entrypoint (and the container) is running as root
if [ $(id -u) = "0" ]; then
is_root=1
install_devnull="install /dev/null -m0600 -omysql -gmysql"
MYSQLD_USER=mysql
else
install_devnull="install /dev/null -m0600"
MYSQLD_USER=$(id -u)
fi
if [ "$1" = 'mysqld' ]; then
# Test that the server can start. We redirect stdout to /dev/null so
# only the error messages are left.
result=0
output=$("$@" --validate-config) || result=$?
if [ ! "$result" = "0" ]; then
echo >&2 '[Entrypoint] ERROR: Unable to start MySQL. Please check your configuration.'
echo >&2 "[Entrypoint] $output"
exit 1
fi
# Get config
DATADIR="$(_get_config 'datadir' "$@")"
SOCKET="$(_get_config 'socket' "$@")"
if [ ! -d "$DATADIR/mysql" ]; then
# If the password variable is a filename we use the contents of the file. We
# read this first to make sure that a proper error is generated for empty files.
if [ -f "$MYSQL_ROOT_PASSWORD" ]; then
MYSQL_ROOT_PASSWORD="$(cat $MYSQL_ROOT_PASSWORD)"
if [ -z "$MYSQL_ROOT_PASSWORD" ]; then
echo >&2 '[Entrypoint] Empty MYSQL_ROOT_PASSWORD file specified.'
exit 1
fi
fi
if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
echo >&2 '[Entrypoint] No password option specified for new database.'
echo >&2 '[Entrypoint] A random onetime password will be generated.'
MYSQL_RANDOM_ROOT_PASSWORD=true
MYSQL_ONETIME_PASSWORD=true
fi
if [ ! -d "$DATADIR" ]; then
mkdir -p "$DATADIR"
chown mysql:mysql "$DATADIR"
fi
#### [BEGIN] mysql-cluster ############################################################################
set -x
if [ ! -z "$MYSQL_REPL_USER" ]; then
if [[ ! $HOSTNAME =~ -([0-9]+)$ ]]; then
echo >&2 "[Entrypoint] Invalid mysql cluster hostname [$HOSTNAME]"
exit 1
fi
ordinal=${HOSTNAME: -1}
# it's a slave node, the master node host is required
if [ "$ordinal" != "0" -a -z "$MYSQL_MASTER_HOST" ]; then
echo >&2 "[Entrypoint] No master node host option specified for a slave node: MYSQL_MASTER_HOST"
exit 1
fi
SERVER_ID=$((100 + $ordinal))
if [ "$ordinal" = "0" ]; then
cat > /etc/my.cnf.d/server-id.cnf <<EOF
[mysqld]
server-id=$SERVER_ID
EOF
else
cat > /etc/my.cnf.d/server-id.cnf <<EOF
[mysqld]
server-id=$SERVER_ID
relay-log=${HOSTNAME}-relay-bin
log_replica_updates=ON
read_only=ON
EOF
fi
fi
set +x
#### [END] mysql-cluster ##############################################################################
# The user can set a default_timezone either in a my.cnf file
# they mount into the container or on command line
# (`docker run mysql/mysql-server:8.0 --default-time-zone=Europe/Berlin`)
# however the timezone tables will only be populated in a later
# stage of this script. By using +00:00 as timezone we override
# the user's choice during initialization. Later the server
# will be restarted using the user's option.
echo '[Entrypoint] Initializing database'
"$@" --user=$MYSQLD_USER --initialize-insecure --default-time-zone=+00:00
echo '[Entrypoint] Database initialized'
"$@" --user=$MYSQLD_USER --daemonize --skip-networking --socket="$SOCKET" --default-time-zone=+00:00
# To avoid using password on commandline, put it in a temporary file.
# The file is only populated when and if the root password is set.
PASSFILE=$(mktemp -u /var/lib/mysql-files/XXXXXXXXXX)
$install_devnull "$PASSFILE"
# Define the client command used throughout the script
# "SET @@SESSION.SQL_LOG_BIN=0;" is required for products like group replication to work properly
mysql=( mysql --defaults-extra-file="$PASSFILE" --protocol=socket -uroot -hlocalhost --socket="$SOCKET" --init-command="SET @@SESSION.SQL_LOG_BIN=0;")
for i in {30..0}; do
if mysqladmin --socket="$SOCKET" ping &>/dev/null; then
break
fi
echo '[Entrypoint] Waiting for server...'
sleep 1
done
if [ "$i" = 0 ]; then
echo >&2 '[Entrypoint] Timeout during MySQL init.'
exit 1
fi
mysql_tzinfo_to_sql /usr/share/zoneinfo | "${mysql[@]}" mysql
if [ ! -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
MYSQL_ROOT_PASSWORD="$(_mkpw)"
echo "[Entrypoint] GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
fi
if [ -z "$MYSQL_ROOT_HOST" ]; then
ROOTCREATE="ALTER USER 'root'@'localhost' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}';"
else
ROOTCREATE="ALTER USER 'root'@'localhost' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}'; \
CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}'; \
GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ; \
GRANT PROXY ON ''@'' TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;"
fi
"${mysql[@]}" <<-EOSQL
DELETE FROM mysql.user WHERE user NOT IN ('mysql.infoschema', 'mysql.session', 'mysql.sys', 'root') OR host NOT IN ('localhost');
CREATE USER 'healthchecker'@'localhost' IDENTIFIED BY 'healthcheckpass';
${ROOTCREATE}
FLUSH PRIVILEGES ;
EOSQL
if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
# Put the password into the temporary config file
cat >"$PASSFILE" <<EOF
[client]
password="${MYSQL_ROOT_PASSWORD}"
EOF
#mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
fi
if [ "$MYSQL_DATABASE" ]; then
echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
mysql+=( "$MYSQL_DATABASE" )
fi
if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
echo "CREATE USER '"$MYSQL_USER"'@'%' IDENTIFIED BY '"$MYSQL_PASSWORD"' ;" | "${mysql[@]}"
if [ "$MYSQL_DATABASE" ]; then
echo "GRANT ALL ON \`"$MYSQL_DATABASE"\`.* TO '"$MYSQL_USER"'@'%' ;" | "${mysql[@]}"
fi
elif [ "$MYSQL_USER" -a ! "$MYSQL_PASSWORD" -o ! "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
echo '[Entrypoint] Not creating mysql user. MYSQL_USER and MYSQL_PASSWORD must be specified to create a mysql user.'
fi
echo
for f in /docker-entrypoint-initdb.d/*; do
case "$f" in
*.sh) echo "[Entrypoint] running $f"; . "$f" ;;
*.sql) echo "[Entrypoint] running $f"; "${mysql[@]}" < "$f" && echo ;;
*) echo "[Entrypoint] ignoring $f" ;;
esac
echo
done
#### [BEGIN] mysql-cluster ############################################################################
set -x
if [ ! -z "$MYSQL_REPL_USER" ]; then
NODE_ID=${HOSTNAME: -1}
if [ "${NODE_ID}" = "0" ]; then
"${mysql[@]}" <<-EOSQL
CREATE USER '$MYSQL_REPL_USER'@'%' IDENTIFIED WITH mysql_native_password BY '$MYSQL_REPL_PASS' ;
GRANT REPLICATION SLAVE ON *.* TO '$MYSQL_REPL_USER'@'%' ;
EOSQL
else
"${mysql[@]}" <<-EOSQL
CHANGE REPLICATION SOURCE TO SOURCE_HOST='${MYSQL_MASTER_HOST}',SOURCE_PORT=3306,SOURCE_USER='$MYSQL_REPL_USER',SOURCE_PASSWORD='$MYSQL_REPL_PASS',SOURCE_AUTO_POSITION=1 ;
START REPLICA ;
EOSQL
fi
fi
set +x
#### [END] mysql-cluster ##############################################################################
# When using a local socket, mysqladmin shutdown will only complete when the server is actually down
mysqladmin --defaults-extra-file="$PASSFILE" shutdown -uroot --socket="$SOCKET"
rm -f "$PASSFILE"
unset PASSFILE
echo "[Entrypoint] Server shut down"
# This needs to be done outside the normal init, since mysqladmin shutdown will not work after
if [ ! -z "$MYSQL_ONETIME_PASSWORD" ]; then
echo "[Entrypoint] Setting root user as expired. Password will need to be changed before database can be used."
SQL=$(mktemp -u /var/lib/mysql-files/XXXXXXXXXX)
$install_devnull "$SQL"
if [ ! -z "$MYSQL_ROOT_HOST" ]; then
cat << EOF > "$SQL"
ALTER USER 'root'@'${MYSQL_ROOT_HOST}' PASSWORD EXPIRE;
ALTER USER 'root'@'localhost' PASSWORD EXPIRE;
EOF
else
cat << EOF > "$SQL"
ALTER USER 'root'@'localhost' PASSWORD EXPIRE;
EOF
fi
set -- "$@" --init-file="$SQL"
unset SQL
fi
echo
echo '[Entrypoint] MySQL init process done. Ready for start up.'
echo
fi
# Used by healthcheck to make sure it doesn't mistakenly report container
# healthy during startup
# Put the password into the temporary config file
touch /var/lib/mysql-files/healthcheck.cnf
cat >"/var/lib/mysql-files/healthcheck.cnf" <<EOF
[client]
user=healthchecker
socket=${SOCKET}
password=healthcheckpass
EOF
touch /var/lib/mysql-files/mysql-init-complete
if [ -n "$MYSQL_INITIALIZE_ONLY" ]; then
echo "[Entrypoint] MYSQL_INITIALIZE_ONLY is set, exiting without starting MySQL..."
exit 0
else
echo "[Entrypoint] Starting MySQL 8.0.28-1.2.7-server"
fi
# 4th value of /proc/$pid/stat is the ppid, same as getppid()
export MYSQLD_PARENT_PID=$(cat /proc/$$/stat|cut -d\ -f4)
exec "$@" --user=$MYSQLD_USER
else
exec "$@"
fi
FROM mysql/mysql-server:8.0.28
COPY my.cnf /etc/
COPY docker-entrypoint.sh /
RUN chmod +x /docker-entrypoint.sh
WORKDIR /
CMD ["mysqld"]
ENTRYPOINT [ "/docker-entrypoint.sh" ]
docker build -t elihe/mysql-server:8.0.28 .
$ mkdir ~/mysql && cd $_
$ cat > mysql-namespace.yml <<EOF
apiVersion: v1
kind: Namespace
metadata:
name: mysql-cluster
labels:
name: mysql-cluster
EOF
$ kubectl apply -f mysql-namespace.yml
$ cat > mysql-secret.yml <<EOF
apiVersion: v1
kind: Secret
metadata:
name: mysql-secret
namespace: mysql-cluster
labels:
app: mysql
type: Opaque
data:
password: MTIzNDU2 # echo -n '123456' | base64
repl-user: cmVwbA== # echo -n 'repl' | base64
repl-pass: MTIzNDU2
EOF
$ kubectl apply -f mysql-secret.yml
暂时没有 Ceph 资源，先使用本地磁盘测试
# 1. 所有节点上，挂载相应的存储盘或路径
$ mkdir -p /data/mysql
# 2. 创建PV
$ cat > mysql-pv.yml <<EOF
apiVersion: v1
kind: PersistentVolume
metadata:
name: mysql-pv
namespace: mysql-cluster
spec:
capacity:
storage: 5Gi
volumeMode: Filesystem
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
storageClassName: mysql-storage
local:
path: /data/mysql
nodeAffinity:
required:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- k8s-master
- k8s-node01
- k8s-node02
EOF
$ kubectl apply -f mysql-pv.yml
$ cat > mysql-pvc.yml <<EOF
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mysql-pvc
namespace: mysql-cluster
spec:
storageClassName: mysql-storage
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
EOF
$ kubectl apply -f mysql-pvc.yml
$ cat > mysql-headless-svc.yml <<EOF
apiVersion: v1
kind: Service
metadata:
name: mysql
namespace: mysql-cluster
labels:
app: mysql
spec:
ports:
- name: mysql
port: 3306
clusterIP: None
selector:
app: mysql
EOF
$ kubectl apply -f mysql-headless-svc.yml
$ vi mysql-statefulset.yml
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql
namespace: mysql-cluster
spec:
selector:
matchLabels:
app: mysql
serviceName: mysql
replicas: 3
template:
metadata:
labels:
app: mysql
spec:
containers:
- name: mysql
image: elihe/mysql-server:8.0.28
env:
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secret
key: password
- name: MYSQL_REPL_USER
valueFrom:
secretKeyRef:
name: mysql-secret
key: repl-user
- name: MYSQL_REPL_PASS
valueFrom:
secretKeyRef:
name: mysql-secret
key: repl-pass
- name: SERVICE_NAME
value: "mysql"
- name: STS_NAME
value: "mysql"
- name: STS_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: MYSQL_MASTER_HOST
value: "$(STS_NAME)-0.$(SERVICE_NAME).$(STS_NAMESPACE)"
ports:
- name: mysql
containerPort: 3306
volumeMounts:
- name: data
mountPath: /var/lib/mysql
subPath: mysql
resources:
requests:
cpu: 500m
memory: 1Gi
limits:
cpu: 500m
memory: 1Gi
livenessProbe:
exec:
command:
- /bin/sh
- "-c"
- MYSQL_PWD="${MYSQL_ROOT_PASSWORD}"
- mysqladmin ping
initialDelaySeconds: 30
periodSeconds: 10
timeoutSeconds: 5
readinessProbe:
exec:
command:
- /bin/sh
- "-c"
- MYSQL_PWD="${MYSQL_ROOT_PASSWORD}"
- mysql -h 127.0.0.1 -u root -e "SELECT 1"
initialDelaySeconds: 60
periodSeconds: 5
timeoutSeconds: 2
volumes:
- name: conf
emptyDir: {}
- name: data
persistentVolumeClaim:
claimName: mysql-pvc
tolerations:
- key: "node-role.kubernetes.io/master"
operator: "Exists"
effect: "NoSchedule"
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
podAffinityTerm:
labelSelector:
matchExpressions:
- key: app
operator: In
values:
- mysql
topologyKey: kubernetes.io/hostname
$ kubectl apply -f mysql-statefulset.yml
$ cat > mysql-service.yml <<EOF
apiVersion: v1
kind: Service
metadata:
name: mysql-read
namespace: mysql-cluster
labels:
app: mysql
spec:
type: NodePort
selector:
app: mysql
ports:
- protocol: TCP
port: 3306
targetPort: 3306
nodePort: 33306
EOF
$ kubectl apply -f mysql-service.yml
$ kubectl exec -it mysql-0 -n mysql-cluster -- /bin/bash
bash-4.4# mysql -uroot -p123456
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 12
Server version: 8.0.28 MySQL Community Server - GPL
Copyright (c) 2000, 2022, 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 testdb;
Query OK, 1 row affected (0.11 sec)
mysql> use testdb;
Database changed
mysql> create table emp(id int, name varchar(20));
Query OK, 0 rows affected (0.39 sec)
mysql> insert into emp values(1, 'eli');
Query OK, 1 row affected (0.06 sec)
$ kubectl exec -it mysql-2 -n mysql-cluster -- /bin/bash
bash-4.4# mysql -uroot -p123456
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 14
Server version: 8.0.28 MySQL Community Server - GPL
Copyright (c) 2000, 2022, 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 |
| mysql |
| performance_schema |
| sys |
| testdb |
+--------------------+
5 rows in set (0.01 sec)
mysql> use testdb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+------------------+
| Tables_in_testdb |
+------------------+
| emp |
+------------------+
1 row in set (0.00 sec)
mysql> select * from emp;
+------+------+
| id | name |
+------+------+
| 1 | eli |
+------+------+
1 row in set (0.00 sec)
步骤一：主库配置my.cnf
###主从数据库配置核心部分
[mysqld]
# 设置同步的binary log二进制日志文件名前缀，默认为binlog；在MySQL 8.0中，无论是否指定--log bin选项，默认情况下都会启用二进制日志记录，并将log_bin系统变量设置为ON。
log-bin=mysql-bin
# 服务器唯一id，默认为1，值范围为1～2^32−1. ；主数据库和从数据库的server-id不能重复
server-id=1
###可选配置
# 需要主从复制的数据库，如多个则重复配置
binlog-do-db=test
# 复制过滤：也就是指定哪个数据库不用同步（mysql库一般不同步），如多个则重复配置
binlog-ignore-db=mysql
# 为每个session分配的内存，在事务过程中用来存储二进制日志的缓存
binlog_cache_size=1M
# 主从复制的格式（mixed,statement,row，默认格式是statement。建议是设置为row，主从复制时数据更加能够统一）
binlog_format=row
# 配置二进制日志自动删除/过期时间，单位秒，默认值为2592000，即30天；8.0.3版本之前使用expire_logs_days，单位天数，默认值为0，表示不自动删除。
binlog_expire_logs_seconds=2592000
# 跳过主从复制中遇到的所有错误或指定类型的错误，避免slave端复制中断，默认OFF关闭，可选值有OFF、all、ddl_exist_errors以及错误码列表。8.0.26版本之前使用slave_skip_errors
# 如：1062错误是指一些主键重复，1032错误是因为主从数据库数据不一致
replica_skip_errors=1062
步骤二：主库配置同步用户
CREATE USER 'repl'@'%' IDENTIFIED BY '123456';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%';
FLUSH PRIVILEGES
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-VynUVxGI-1644922298984)(https://cdn.jsdelivr.net/gh/elihe2011/bedgraph@master/mysql/cluster-binlog-master.png)]
步骤三：从库配置my.cnf
###主从数据库配置核心部分
[mysqld]
# 设置同步的binary log二进制日志文件名前缀，默认是binlog
log-bin=mysql-bin
# 服务器唯一id，默认为1，值范围为1～2^32−1. ；主数据库和从数据库的server-id不能重复
server-id=2
###可选配置
# 需要主从复制的数据库 ，如多个则重复配置
replicate-do-db=test
# 复制过滤：也就是指定哪个数据库不用同步（mysql库一般不同步） ，如多个则重复配置
binlog-ignore-db=mysql
# 为每个session分配的内存，在事务过程中用来存储二进制日志的缓存
binlog_cache_size=1M
# 主从复制的格式（mixed,statement,row，默认格式是statement。建议是设置为row，主从复制时数据更加能够统一）
binlog_format=row
# 配置二进制日志自动删除/过期时间，单位秒，默认值为2592000，即30天；8.0.3版本之前使用expire_logs_days，单位天数，默认值为0，表示不自动删除。
binlog_expire_logs_seconds=2592000
# 跳过主从复制中遇到的所有错误或指定类型的错误，避免slave端复制中断，默认OFF关闭，可选值有OFF、all、ddl_exist_errors以及错误码列表。8.0.26版本之前使用slave_skip_errors
# 如：1062错误是指一些主键重复，1032错误是因为主从数据库数据不一致
replica_skip_errors=1062
# relay_log配置中继日志，默认采用 主机名-relay-bin 的方式保存日志文件
relay_log=replicas-mysql-relay-bin
# log_replica_updates表示slave是否将复制事件写进自己的二进制日志，默认值ON开启；8.0.26版本之前使用log_slave_updates
log_replica_updates=ON
# 防止改变数据(只读操作，除了特殊的线程)
read_only=ON
步骤四：从库开启同步
# 8.0.22-
CHANGE MASTER TO MASTER_HOST='192.168.34.120',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='123456',MASTER_LOG_FILE='mysql-bin.000007',MASTER_LOG_POS=825;
START SLAVE;
SHOW SLAVE STATUS;
STOP SLAVE;
RESTART SLAVE;
# 8.0.23+
CHANGE REPLICATION SOURCE TO SOURCE_HOST='192.168.34.120',SOURCE_PORT=3306,SOURCE_USER='repl',SOURCE_PASSWORD='123456',SOURCE_LOG_FILE='mysql-bin.000007',SOURCE_LOG_POS=825;
START REPLICA;
SHOW REPLICA STATUS;
STOP REPLICA;
RESTART REPLICA;
Slave_IO_Running/Replica_IO_Running和 Slave_SQL_Running/Replica_SQL_Running 为 Yes ，以及Slave_IO_State/Replica_IO_State 为 Waiting for master to send event/Waiting for source to send event，说明主从复制成功
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-AMMMMAWu-1644922298987)(https://cdn.jsdelivr.net/gh/elihe2011/bedgraph@master/mysql/cluster-binlog-slave.png)]
步骤一：主库配置my.cnf
###主从数据库配置核心部分
[mysqld]
# 设置同步的binary log二进制日志文件名前缀，默认为binlog
log-bin=mysql-bin
# 服务器唯一id，默认为1，值范围为1～2^32−1. ；主数据库和从数据库的server-id不能重复
server-id=1
#开启 GTID
gtid_mode=ON
enforce_gtid_consistency=ON
###可选配置
# 需要主从复制的数据库，如多个则重复配置
binlog-do-db=test
# 复制过滤：也就是指定哪个数据库不用同步（mysql库一般不同步），如多个则重复配置
binlog-ignore-db=mysql
# 为每个session分配的内存，在事务过程中用来存储二进制日志的缓存
binlog_cache_size=1M
# 主从复制的格式（mixed,statement,row，默认格式是statement。建议是设置为row，主从复制时数据更加能够统一）
binlog_format=row
# 配置二进制日志自动删除/过期时间，单位秒，默认值为2592000，即30天；8.0.3版本之前使用expire_logs_days，单位天数，默认值为0，表示不自动删除。
binlog_expire_logs_seconds=2592000
# 跳过主从复制中遇到的所有错误或指定类型的错误，避免slave端复制中断，默认OFF关闭，可选值有OFF、all、ddl_exist_errors以及错误码列表。8.0.26版本之前使用slave_skip_errors
# 如：1062错误是指一些主键重复，1032错误是因为主从数据库数据不一致
replica_skip_errors=1062
步骤二：主库配置同步用户
CREATE USER 'repl'@'%' IDENTIFIED BY '123456';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%';
FLUSH PRIVILEGES
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-QB3ptZfg-1644922298988)(https://cdn.jsdelivr.net/gh/elihe2011/bedgraph@master/mysql/cluster-gtid-master.png)]
步骤三：从库配置my.cnf
###主从数据库配置核心部分
[mysqld]
# 设置同步的binary log二进制日志文件名前缀，默认是binlog
log-bin=mysql-bin
# 服务器唯一id，默认为1，值范围为1～2^32−1. ；主数据库和从数据库的server-id不能重复
server-id=2
#开启 GTID
gtid_mode=ON
enforce_gtid_consistency=ON
###可选配置
# 需要主从复制的数据库 ，如多个则重复配置
replicate-do-db=test
# 复制过滤：也就是指定哪个数据库不用同步（mysql库一般不同步） ，如多个则重复配置
binlog-ignore-db=mysql
# 为每个session分配的内存，在事务过程中用来存储二进制日志的缓存
binlog_cache_size=1M
# 主从复制的格式（mixed,statement,row，默认格式是statement。建议是设置为row，主从复制时数据更加能够统一）
binlog_format=row
# 配置二进制日志自动删除/过期时间，单位秒，默认值为2592000，即30天；8.0.3版本之前使用expire_logs_days，单位天数，默认值为0，表示不自动删除。
binlog_expire_logs_seconds=2592000
# 跳过主从复制中遇到的所有错误或指定类型的错误，避免slave端复制中断，默认OFF关闭，可选值有OFF、all、ddl_exist_errors以及错误码列表。8.0.26版本之前使用slave_skip_errors
# 如：1062错误是指一些主键重复，1032错误是因为主从数据库数据不一致
replica_skip_errors=1062
# relay_log配置中继日志，默认采用 主机名-relay-bin 的方式保存日志文件
relay_log=replicas-mysql-relay-bin
# log_replica_updates表示slave是否将复制事件写进自己的二进制日志，默认值ON开启；8.0.26版本之前使用log_slave_updates
log_replica_updates=ON
# 防止改变数据(只读操作，除了特殊的线程)
read_only=ON
步骤四：从库开启同步
# 8.0.22-
CHANGE MASTER TO MASTER_HOST='192.168.34.120',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='123456',MASTER_LOG_FILE='mysql-bin.000007',MASTER_LOG_POS=825;
START SLAVE;
SHOW SLAVE STATUS;
STOP SLAVE;
RESTART SLAVE;
# 8.0.23+
CHANGE REPLICATION SOURCE TO SOURCE_HOST='192.168.34.120',SOURCE_PORT=3306,SOURCE_USER='repl',SOURCE_PASSWORD='123456',SOURCE_LOG_FILE='mysql-bin.000007',SOURCE_LOG_POS=825;
START REPLICA;
SHOW REPLICA STATUS;
STOP REPLICA;
RESTART REPLICA;
Slave_IO_Running/Replica_IO_Running和 Slave_SQL_Running/Replica_SQL_Running 为 Yes ，以及Slave_IO_State/Replica_IO_State 为 Waiting for master to send event/Waiting for source to send event，说明主从复制成功
docker run --name master -h mysql-0 -e MYSQL_ROOT_PASSWORD=123456 -e MYSQL_REPL_USER=repl -e MYSQL_REPL_PASS=123456 -v ~/mysql-cluster/master.cnf:/etc/my.cnf.d/mysqld.cnf -d elihe/mysql-server:8.0.28
docker run --name slave1 -h mysql-1 -e MYSQL_ROOT_PASSWORD=123456 -e MYSQL_REPL_USER=repl -e MYSQL_REPL_PASS=123456 -e MYSQL_MASTER_HOST=172.17.0.2 -v ~/mysql-cluster/slave1.cnf:/etc/my.cnf.d/mysqld.cnf -d elihe/mysql-server:8.0.28
docker run --name slave2 -h mysql-2 -e MYSQL_ROOT_PASSWORD=123456 -e MYSQL_REPL_USER=repl -e MYSQL_REPL_PASS=123456 -e MYSQL_MASTER_HOST=172.17.0.2 -v ~/mysql-cluster/slave2.cnf:/etc/my.cnf.d/mysqld.cnf -d elihe/mysql-server:8.0.28