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amend innodb recover doc with a few extra bits

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This commit is contained in:
Arif Ali 2022-10-18 08:55:25 +01:00
parent b6e31f8df6
commit 701f19ab9c
Signed by: arif
GPG Key ID: 369608FBA1353A70
1 changed files with 15 additions and 3 deletions
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recover_innodb_cluster.md
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@ -6,11 +6,16 @@ mysql-innodb-cluster/1 active idle 1/lxd/6 10.0.1.114
mysql-innodb-cluster/2* active idle 2/lxd/6 10.0.1.156 Unit is ready: Mode: R/O, Cluster is ONLINE and can tolerate up to ONE failure.
```
1. Grab a backup of the mysql Database
```
juju run-action --wait mysql-innodb-cluster/leader mysqldump
```
1. Stop the mysql on the unit `mysql-innodb-cluster/0`
```
sudo systemctl stop mysql
sudo mv /var/lib/mysql /var/lib/mysql.old
```
1. Remove the member from the cluster
@ -36,6 +41,7 @@ mysql-innodb-cluster/2* active idle 2/lxd/6 10.0.1.156
```
juju ssh mysql-innodb-cluster/0
sudo -i
cd /var/lib
mv mysql mysql.old.$(date +%s)
mkdir mysql
@ -54,6 +60,12 @@ mysql-innodb-cluster/2* active idle 2/lxd/6 10.0.1.156
[Note] [MY-010454] [Server] A temporary password is generated for root@localhost: wyPd_?kEd03p
```
This can easily grabbed by running the following command
```
grep temporary /var/log/mysql/error.log
```
First we need to get the root password that is stored
```
@ -94,7 +106,7 @@ mysql-innodb-cluster/2* active idle 2/lxd/6 10.0.1.156
mysql -u clusteruser -p -e 'SELECT user,host FROM mysql.user'
```
1. Re-add instance to cluster:
1. Re-add instance to cluster (you may need to replace `leader` by the unit number that is `Mode: R/W`:
```
juju run-action --wait mysql-innodb-cluster/leader add-instance address=10.0.1.137
@ -133,4 +145,4 @@ After that check the cluster status:
```
juju run-action --wait mysql-innodb-cluster/leader cluster-status
```
```