Skip to content

Commit 534ab49

Browse files
author
root
committed
*: MySQL 5.7 upgrade to MySQL8.0 radondb#426 
1 parent 56da385 commit 534ab49

File tree

2 files changed

+204
-0
lines changed

2 files changed

+204
-0
lines changed

‎docs/zh-cn/upgrade80sh.md

+36
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
1+
Contents
2+
=================
3+
4+
* [简介](#简介)
5+
* [限制](#限制)
6+
* [用法](#用法)
7+
* [Check](#check)
8+
* [Upgrade](#upgrade)
9+
10+
# 简介
11+
从 MySQL5.7 升级到 MySQL8.0 有两种方式, 一种是直接从 MySQL5.7 的数据文件中升级, 这种方式被称为 In-place Upgrade, 另一种是通过`msqldump` 进行逻辑备份与恢复, 这种方式被称为 `logic upgrade` , `updrade80.sh` 是采用第一种方式进行的.
12+
13+
# 限制
14+
采用`in-place upgrade` 速度较快,但是必须要谨慎, 严格参考 [mysql手册](https://dev.mysql.com/doc/refman/8.0/en/upgrade-binary-package.html#upgrade-procedure-inplace) 要求进行检查, 并且事先要做好备份.
15+
16+
# 用法
17+
建议实现执行 Check, 如果check 没有任何信息, 然后执行 Update 命令,
18+
## Check
19+
用法：
20+
```
21+
upgrade80.sh check [集群名称]
22+
```
23+
示例:
24+
```
25+
./upgrade80.sh check sample
26+
```
27+
28+
## Upgrade
29+
用法
30+
```
31+
./upgrade80.sh update [集群名称] [mysql80的sidecar镜像]
32+
```
33+
示例:
34+
```
35+
./upgrade80.sh update sample "radondb/mysql80-sidecar:v2.2.0"
36+
```

‎upgrade80.sh

+168
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,168 @@
1+
#!/usr/bin/bash
2+
CLUSTER=
3+
IMAGE=
4+
update () {
5+
# set innodb_fast_shutdown=0 in yaml file
6+
kubectl patch mysql $CLUSTER --type=merge --patch '{"spec":
7+
{"mysqlOpts":
8+
{"mysqlConf": {"innodb_fast_shutdown":"0"}
9+
}
10+
}
11+
}'
12+
13+
checkReadyOrClosed() {
14+
kubectl get mysqlclusters.mysql.radondb.com -o jsonpath='{.items[0].status.state}' 2>/dev/null |grep -q 'Ready'||kubectl get mysqlclusters.mysql.radondb.com -o jsonpath='{.items[0].status.state}' 2>/dev/null |grep -q 'Closed'
15+
}
16+
checkStatefulSetUpdated() {
17+
# it has ready
18+
# get statefulset ready replicas
19+
ready=$(kubectl get statefulsets.apps -o jsonpath='{.items[0].status.readyReplicas}' 2>/dev/null)
20+
updateVersion=$(kubectl get statefulsets.apps -o jsonpath='{.items[0].status.updateRevision}' 2>/dev/null)
21+
count=$(kubectl get pod -l "app.kubernetes.io/managed-by"="mysql.radondb.com" -l "controller-revision-hash"=$updateVersion |awk 'NR>1{print $1}'|wc -l)
22+
if [ $count -eq $ready ];then
23+
return 0
24+
else
25+
return 1
26+
fi
27+
}
28+
waitReady () {
29+
timeout=$1
30+
SECONDS=0
31+
echo -n Wating
32+
until checkReadyOrClosed; do
33+
sleep 2
34+
echo -n "."
35+
if [ $SECONDS -gt $timeout ]; then
36+
echo "timeout"
37+
break
38+
fi
39+
done
40+
echo
41+
}
42+
43+
waitReady 30
44+
until checkStatefulSetUpdated; do
45+
echo "waiting for statefulset updated"
46+
echo -n "."
47+
sleep 5
48+
done
49+
echo
50+
pods=$(kubectl get pod -l "app.kubernetes.io/managed-by"="mysql.radondb.com"|awk 'NR>1{print $1}')
51+
for p in $pods ; do
52+
kubectl exec -it $p -c mysql -- bash <<EOF
53+
rm -rf /var/lib/mysql/ib_logfile*
54+
EOF
55+
done
56+
kubectl patch mysql $CLUSTER --type=merge --patch "{\"spec\":
57+
{\"mysqlVersion\": \"8.0\",
58+
\"podPolicy\": {\"sidecarImage\": \"$IMAGE\"}
59+
}
60+
}"
61+
62+
}
63+
64+
check() {
65+
kubectl exec -it svc/$CLUSTER-leader -c mysql -- bash <<EOF
66+
mysqlcheck -u root -pRadonDB@123 --all-databases --check-upgrade
67+
EOF
68+
kubectl exec -it svc/$CLUSTER-leader -c mysql -- bash <<EOF
69+
mysql -uroot -pRadonDB@123 <<MOF
70+
SELECT TABLE_SCHEMA, TABLE_NAME
71+
FROM INFORMATION_SCHEMA.TABLES
72+
WHERE ENGINE NOT IN ('innodb', 'ndbcluster')
73+
AND CREATE_OPTIONS LIKE '%partitioned%';
74+
MOF
75+
EOF
76+
# if has partition , alter them to innodb
77+
# ALTER TABLE table_name ENGINE = INNODB;
78+
79+
# check the special table name in mysql57 information_schema
80+
kubectl exec -it svc/$CLUSTER-leader -c mysql -- bash <<EOF
81+
mysql -uroot -pRadonDB@123 <<MOF
82+
SELECT TABLE_SCHEMA, TABLE_NAME
83+
FROM INFORMATION_SCHEMA.TABLES
84+
WHERE LOWER(TABLE_SCHEMA) = 'mysql'
85+
and LOWER(TABLE_NAME) IN
86+
(
87+
'catalogs',
88+
'character_sets',
89+
'check_constraints',
90+
'collations',
91+
'column_statistics',
92+
'column_type_elements',
93+
'columns',
94+
'dd_properties',
95+
'events',
96+
'foreign_key_column_usage',
97+
'foreign_keys',
98+
'index_column_usage',
99+
'index_partitions',
100+
'index_stats',
101+
'indexes',
102+
'parameter_type_elements',
103+
'parameters',
104+
'resource_groups',
105+
'routines',
106+
'schemata',
107+
'st_spatial_reference_systems',
108+
'table_partition_values',
109+
'table_partitions',
110+
'table_stats',
111+
'tables',
112+
'tablespace_files',
113+
'tablespaces',
114+
'triggers',
115+
'view_routine_usage',
116+
'view_table_usage'
117+
);
118+
MOF
119+
EOF
120+
121+
# if exist RENAME TABLE
122+
# check the constraints name over 64
123+
kubectl exec -it svc/$CLUSTER-leader -c mysql -- bash <<EOF
124+
mysql -uroot -pRadonDB@123 <<MOF
125+
SELECT TABLE_SCHEMA, TABLE_NAME
126+
FROM INFORMATION_SCHEMA.TABLES
127+
WHERE TABLE_NAME IN
128+
(SELECT LEFT(SUBSTR(ID,INSTR(ID,'/')+1),
129+
INSTR(SUBSTR(ID,INSTR(ID,'/')+1),'_ibfk_')-1)
130+
FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN
131+
WHERE LENGTH(SUBSTR(ID,INSTR(ID,'/')+1))>64);
132+
MOF
133+
EOF
134+
# There must be no views with explicitly defined columns names that exceed 64 characters
135+
136+
# partitioned table
137+
kubectl exec -it svc/$CLUSTER-leader -c mysql -- bash <<EOF
138+
mysql -uroot -pRadonDB@123 <<MOF
139+
SELECT DISTINCT NAME, SPACE, SPACE_TYPE FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES
140+
WHERE NAME LIKE '%#P#%' AND SPACE_TYPE NOT LIKE 'Single';
141+
MOF
142+
EOF
143+
144+
## ALTER TABLE table_name REORGANIZE PARTITION partition_name
145+
## INTO (partition_definition TABLESPACE=innodb_file_per_table);
146+
##
147+
148+
}
149+
150+
main() {
151+
CHOICE=$1
152+
CLUSTER=$2
153+
IMAGE=$3
154+
# choose the action
155+
case $CHOICE in
156+
"update")
157+
update
158+
;;
159+
"check")
160+
check
161+
;;
162+
*)
163+
echo "Usage: $0 [update|check] [cluster name] [image name]"
164+
;;
165+
esac
166+
167+
}
168+
main "$@"

0 commit comments

Comments
 (0)