1docker logs <friendly-name|container-id> You can tail it much like tailing ordinary logs: 1docker logs -f --tail=5 <friendly-name|container-id> which means: "start tailing at current last 5 entries of the logs"

It's in syslog. In ubuntu, do the following: 1grep -i ansible /var/log/syslog See details in https://serverfault.com/questions/531004/where-do-i-find-the-latest-ansible-error-log

1slow_query_log = 1 2long_query_time = 1 3slow_query_log_file = /var/log/mariadb/slow-query.log 4log_queries_not_using_indexes See details in https://www.cyberciti.biz/faq/how-to-set-and-enable-mariadb-slow-query-log-linux-unix/

In /var/logs/newrelic 1[root@example.com newrelic]# grep -i newrelic.com newrelic-daemon.log 22019/01/21 06:09:53.115267 (12209) Info: Reporting to: https://rpm.newrelic.com/accounts/76083/applications/159251100 32019/01/21 06:37:43.147116 (12209) Info: Reporting to: …

From /var/log/mariadb/mariadb.log, something like 1150515 12:10:45 InnoDB: Completed initialization of buffer pool 2150515 12:10:45 InnoDB: Fatal error: cannot allocate memory for the buffer pool 3150515 12:10:45 [ERROR] Plugin 'InnoDB' init function returned error. 4150515 12:10:45 [ERROR] Plugin …

1drupal@ubuntu:/var/www/sites/openedu.localhost/docroot$ drush si site-name='OpenEDU Testing' --db-url='mysql://openedu_DBA:openedu_PASS@127.0.0.1/openedu_DB' openedu 2PHP Fatal error: Uncaught Error: Undefined class constant 'MYSQL_ATTR_SSL_CA' in …

https://docs.acquia.com/acquia-cloud/files/system-files

From Web Browser: generate 'drush uli' Go to /admin/reports/dblog From CLI: 1drush watchdog-show See https://drupal.stackexchange.com/questions/48645/how-to-show-admin-reports-dblog-in-terminal-cli

Check /etc/mysql/my.cnf and examine "datadir" value. If it isn't valid or you know the disk is bad, change it. Restart service and all will be well.