朋友们，我尝试在 XtraBackup 的帮助下运行一个复制的 Mysql 数据库，当它到达第二个节点尝试从主节点克隆数据时，我收到以下错误（错误 1045（28000）：访问被拒绝用户'root'@'localhost'（使用密码：NO））。这是我得到错误的地方：
if [[ -f change_master_to.sql.in ]]; then
echo "Waiting for mysqld to be ready (accepting connections)"
until mysql --host=127.0.0.1 --user=${MYSQL_USER} --password=${MYSQL_PASSWORD} --execute="SHOW DATABASES"; do sleep 1; done
echo "Initializing replication from clone position"
mysql -h 127.0.0.1 \
-e "$(<change_master_to.sql.in), \
MASTER_HOST='mysql-0.mysql', \
MASTER_USER='root', \
MASTER_PASSWORD='root-password', \
MASTER_CONNECT_RETRY=10; \
START SLAVE;" || exit 1
mv change_master_to.sql.in change_master_to.sql.orig
fi
由于我正在传递密码和错误日志，它的说法相反，我认为问题可能出在其他地方，但我不知道在哪里。有任何想法吗？
这是我完整的 yml，以防万一有人想看一下：
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql
spec:
selector:
matchLabels:
app: mysql
serviceName: mysql
replicas: 2
template:
metadata:
labels:
app: mysql
spec:
initContainers:
- name: init-mysql
image: mysql:5.7
command:
- bash
- "-c"
- |
set -ex
[[ `hostname` =~ -([0-9]+)$ ]] || exit 1
ordinal=${BASH_REMATCH[1]}
echo [mysqld] > /mnt/conf.d/server-id.cnf
echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf
if [[ $ordinal -eq 0 ]]; then
cp /mnt/config-map/master.cnf /mnt/conf.d/
else
cp /mnt/config-map/slave.cnf /mnt/conf.d/
fi
volumeMounts:
- name: conf
mountPath: /mnt/conf.d
- name: config-map
mountPath: /mnt/config-map
- name: clone-mysql
image: gcr.io/google-samples/xtrabackup:1.0 #bitnami/percona-xtrabackup:8 perconalab/percona-xtrabackup
command:
- bash
- "-c"
- |
set -ex
# Skip the clone if data already exists.
[[ -d /var/lib/mysql/mysql ]] && exit 0
# Skip the clone on master (ordinal index 0).
[[ `hostname` =~ -([0-9]+)$ ]] || exit 1
ordinal=${BASH_REMATCH[1]}
[[ $ordinal -eq 0 ]] && exit 0
# Clone data from previous peer.
ncat --recv-only mysql-$(($ordinal-1)).mysql 3307 | xbstream -x -C /var/lib/mysql
# Prepare the backup.
xtrabackup --prepare --target-dir=/var/lib/mysql
volumeMounts:
- name: data
mountPath: /var/lib/mysql
subPath: mysql
- name: conf
mountPath: /etc/mysql/conf.d
containers:
- name: mysql
image: mysql:5.7
env:
- name: MYSQL_USER
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_user
- name: MYSQL_PASSWORD
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_password
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_root_password
- name: MYSQL_DATABASE
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_database
ports:
- name: mysql
containerPort: 3306
volumeMounts:
- name: data
mountPath: /var/lib/mysql
subPath: mysql
- name: conf
mountPath: /etc/mysql/conf.d
resources:
requests:
cpu: 500m
memory: 1Gi
livenessProbe:
exec:
command:
- "bash"
- "-c"
- "mysql --user=${MYSQL_USER} --password=${MYSQL_PASSWORD} --execute=\"SHOW DATABASES;\""
initialDelaySeconds: 40
periodSeconds: 10
timeoutSeconds: 5
readinessProbe:
exec:
command:
- "bash"
- "-c"
- "mysql --user=${MYSQL_USER} --password=${MYSQL_PASSWORD} --execute=\"SHOW DATABASES;\""
initialDelaySeconds: 30
periodSeconds: 5
timeoutSeconds: 2
- name: xtrabackup
image: gcr.io/google-samples/xtrabackup:1.0 #perconalab/percona-xtrabackup
env:
- name: MYSQL_USER
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_user
- name: MYSQL_PASSWORD
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_password
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: webservice-secrets
key: mysql_root_password
ports:
- name: xtrabackup
containerPort: 3307
command:
- bash
- "-c"
- |
set -ex
cd /var/lib/mysql
if [[ -f xtrabackup_slave_info && "x$(<xtrabackup_slave_info)" != "x" ]]; then
cat xtrabackup_slave_info | sed -E 's/;$//g' > change_master_to.sql.in
rm -f xtrabackup_slave_info xtrabackup_binlog_info
elif [[ -f xtrabackup_binlog_info ]]; then
[[ `cat xtrabackup_binlog_info` =~ ^(.*?)[[:space:]]+(.*?)$ ]] || exit 1
rm -f xtrabackup_binlog_info xtrabackup_slave_info
echo "CHANGE MASTER TO MASTER_LOG_FILE='${BASH_REMATCH[1]}',\
MASTER_LOG_POS=${BASH_REMATCH[2]}" > change_master_to.sql.in
fi
if [[ -f change_master_to.sql.in ]]; then
echo "Waiting for mysqld to be ready (accepting connections)"
until mysql --host=127.0.0.1 --user='root' --password='root-password' --execute='SHOW DATABASES'; do sleep 1; done
echo "Initializing replication from clone position"
mysql -h 127.0.0.1 \
-e "$(<change_master_to.sql.in), \
MASTER_HOST='mysql-0.mysql', \
MASTER_USER='root', \
MASTER_PASSWORD='root-password', \
MASTER_CONNECT_RETRY=10; \
START SLAVE;" || exit 1
mv change_master_to.sql.in change_master_to.sql.orig
fi
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=root-password"
volumeMounts:
- name: data
mountPath: /var/lib/mysql
subPath: mysql
- name: conf
mountPath: /etc/mysql/conf.d
resources:
requests:
cpu: 100m
memory: 100Mi
volumes:
- name: conf
emptyDir: {}
- name: config-map
configMap:
name: mysql
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: ["ReadWriteOnce"]
storageClassName: "standard"
resources:
requests:
storage: 1Gi