# Percona toolkit - Unable to connect to Mysqldb - MAC **URL:** \ **Category:** Uncategorized\ **Created:** [June 4, 2024, 2:56pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812 "2024-06-04T14:56:15Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![mysqlcoe](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mysqlcoe](https://forums.percona.com/u/mysqlcoe)\ **Post date:** [June 4, 2024, 2:56pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/1 "2024-06-04T14:56:15Z")
Hi, I am unable to run percona toolkit in mac. I am getting the following error. Cannot connect to MySQL: Cannot connect to MySQL because the Perl DBD::mysql module is not installed or not found. Run ‘perl -MDBD::mysql’ to see the directories that Perl searches for DBD::mysql. If DBD::mysql is not installed, try: Debian/Ubuntu apt-get install libdbd-mysql-perl RHEL/CentOS yum install perl-DBD-MySQL OpenSolaris pgk install pkg:/SUNWapu13dbd-mysql 18 at ./pt-online-schema-change line 8758. Need help. ---
**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\ **Post date:** [June 4, 2024, 3:44pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/2 "2024-06-04T15:44:23Z")
I ran the following on my mac and the toolkit is able to connect to a remote MySQL server: ```auto $ brew install percona-toolkit $ brew install mysql-client $ brew link --force mysql-client $ pt-mysql-summary -h 10.10.10.203 -P 8035 --user msandbox --password msandbox ... # Report On Port 8035 ######################################## User | msandbox@% Time | 2024-06-04 15:42:54 (UTC) Hostname | remotedblion Version | 8.0.35-27 Percona Server (GPL), Release 27, Revision 2f8eeab2 ``` ---
**Author:** ![mysqlcoe](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mysqlcoe](https://forums.percona.com/u/mysqlcoe)\ **Post date:** [June 4, 2024, 5:20pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/3 "2024-06-04T17:20:16Z")
Thanks, Matt! I am able to get pt-mysql-summary work. But the pt-online-schema-change errors. Is pt-online-schema-changes working for you? Thanks! ---
**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\ **Post date:** [June 4, 2024, 5:28pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/4 "2024-06-04T17:28:05Z")
Can you show the errors? It’s hard to help without seeing what you are seeing. ---
**Author:** ![mysqlcoe](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mysqlcoe](https://forums.percona.com/u/mysqlcoe)\ **Post date:** [June 4, 2024, 5:31pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/5 "2024-06-04T17:31:50Z")
Cannot connect to MySQL: Cannot connect to MySQL because the Perl DBD::mysql module is not installed or not found. Run ‘perl -MDBD::mysql’ to see the directories that Perl searches for DBD::mysql. If DBD::mysql is not installed, try: Debian/Ubuntu apt-get install libdbd-mysql-perl RHEL/CentOS yum install perl-DBD-MySQL OpenSolaris pgk install pkg:/SUNWapu13dbd-mysql 18 at ./pt-online-schema-change line 8758. ---
**Author:** ![mysqlcoe](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mysqlcoe](https://forums.percona.com/u/mysqlcoe)\ **Post date:** [June 4, 2024, 10:25pm UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/6 "2024-06-04T22:25:47Z")
Any help with this please ---
**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\ **Post date:** [June 5, 2024, 12:56am UTC](https://forums.percona.com/t/percona-toolkit-unable-to-connect-to-mysqldb-mac/30812/7 "2024-06-05T00:56:57Z")
Hello @mysqlcoe The forums are a volunteer effort from Percona employees and community members. If you need immediate help, you can engage us with a support contract. I had no issues running pt-osc on my mac: ```auto $ sw_vers ProductName: macOS ProductVersion: 13.6.7 BuildVersion: 22G720 $ pt-online-schema-change --version pt-online-schema-change 3.5.5 $ pt-online-schema-change -h 10.10.10.203 --user msandbox --password msandbox D=world,t=city,P=8035 --alter "ADD COLUMN c13 varchar(20)" --execute No slaves found. See --recursion-method if host blacklion has slaves. Not checking slave lag because no slaves were found and --check-slave-lag was not specified. Operation, tries, wait: analyze_table, 10, 1 copy_rows, 10, 0.25 create_triggers, 10, 1 drop_triggers, 10, 1 swap_tables, 10, 1 update_foreign_keys, 10, 1 Altering `world`.`city`... Creating new table... Created new table world._city_new OK. Altering new table... Altered `world`.`_city_new` OK. 2024-06-04T19:53:17 Creating triggers... 2024-06-04T19:53:17 Created triggers OK. 2024-06-04T19:53:17 Copying approximately 4046 rows... 2024-06-04T19:53:17 Copied rows OK. 2024-06-04T19:53:17 Analyzing new table... 2024-06-04T19:53:17 Swapping tables... 2024-06-04T19:53:17 Swapped original and new tables OK. 2024-06-04T19:53:17 Dropping old table... 2024-06-04T19:53:17 Dropped old table `world`.`_city_old` OK. 2024-06-04T19:53:17 Dropping triggers... 2024-06-04T19:53:17 Dropped triggers OK. Successfully altered `world`.`city`. ```