dolphie 6.3.0

Your single pane of glass for real-time analytics into MySQL/MariaDB & ProxySQL

Dolphie

Your single pane of glass for real-time analytics into MySQL/MariaDB & ProxySQL

Installation

Requires Python 3.8.1+

Using PyPi

$ pip install dolphie

Using Poetry

$ curl -sSL https://install.python-poetry.org | python3 -

$ poetry install

Using Homebrew

If you are a Homebrew user, you can install dolphie via

$ brew install dolphie

Using Docker

$ docker pull ghcr.io/charles-001/dolphie:latest
$ docker run -dit --name dolphie ghcr.io/charles-001/dolphie:latest
$ docker exec -it dolphie dolphie -h host.docker.internal -u root --ask-pass

Usage

positional arguments:
  uri                   Use a URI string for credentials (mysql/proxysql) - format: mysql://user:password@host:port (port is optional with default 3306, or 6032 for ProxySQL)

options:
  --help                show this help message and exit
  --tab-setup           Start Dolphie by showing the Tab Setup modal instead of automatically connecting with the specified options
  -C , --cred-profile   Credential profile to use. See below for more information
  -u , --user           Username
  -p , --password       Password
  -h , --host           Hostname/IP address
  -P , --port           Port (socket has precedence)
  -S , --socket         Socket file
  -c , --config-file    Dolphie's config file to use. Options are read from these files in the given order: ['/etc/dolphie.cnf', '/etc/dolphie/dolphie.cnf', '~/.dolphie.cnf']
  -m , --mycnf-file     MySQL config file path to use. This should use [client] section [default: ~/.my.cnf]
  -l , --login-path     Specify login path to use with mysql_config_editor's file ~/.mylogin.cnf for encrypted login credentials [default: client]
  -r , --refresh-interval
                        How much time to wait in seconds between each refresh [default: 1]
  --host-cache-file     Resolve IPs to hostnames when your DNS is unable to. Each IP/hostname pair should be on its own line using format ip=hostname [default: ~/dolphie_host_cache]
  --tab-setup-file      Specify location of file that stores the available hosts to use in Tab Setup modal [default: ~/dolphie_hosts]
  --heartbeat-table     (MySQL only) If your hosts use pt-heartbeat, specify table in format db.table to use the timestamp it has for replication lag instead of Seconds_Behind_Master from SHOW REPLICA STATUS
  --ssl-mode            Desired security state of the connection to the host. Supports: REQUIRED/VERIFY_CA/VERIFY_IDENTITY [default: OFF]
  --ssl-ca              Path to the file that contains a CA (certificate authority)
  --ssl-cert            Path to the file that contains a certificate
  --ssl-key             Path to the file that contains a private key for the certificate
  --panels              What panels to display on startup separated by a comma. Supports: dashboard,processlist,graphs,replication,metadata_locks,ddl,proxysql_hostgroup_summary,proxysql_mysql_query_rules,proxysql_command_stats [default: dashboard,processlist]
  --graph-marker        What marker to use for graphs (available options: https://tinyurl.com/dolphie-markers) [default: braille]
  --pypi-repo           What PyPi repository to use when checking for a new version default: [https://pypi.org/pypi/dolphie/json]
  -H , --hostgroup      This is used for creating tabs and connecting to them for hosts you specify in Dolphie's config file under a hostgroup section. As an example, you'll have a section called [cluster1] then below it you will list each host on a new line in the format key=host (keys have no meaning). Hosts support optional port (default is whatever port parameter is) in the format host:port. You can also name the tabs by suffixing ~tab_name to the host (i.e. 1=host~tab_name)
  -R, --record          Enables recording of Dolphie's data to a replay file. Note: This can use significant disk space. Monitor accordingly!
  -D, --daemon          Starts Dolphie in daemon mode. This will not show the TUI and is designed be put into the background with whatever solution you decide to use. Automatically enables --record. This mode is solely used for recording data to a replay file
  --daemon-log-file     Full path of the log file for daemon mode
  --replay-file         Specify the full path of the replay file to load and enable replay mode
  --replay-dir          Directory to store replay data files
  --replay-retention-hours
                        Number of hours to keep replay data. Data will be purged every hour [default: 48]
  --exclude-notify-vars
                        Dolphie will let you know when a global variable has been changed. If you have variables that change frequently and you don't want to see them, you can specify which ones with this option separated by a comma (i.e. --exclude-notify-vars=variable1,variable2)
  --show-trxs-only      (MySQL only) Start with only showing threads that have an active transaction
  --additional-columns  Start with additional columns in Processlist panel
  --debug-options       Display options that are set and what they're set by (command-line, dolphie config, etc) then exit. WARNING: This will show passwords and other sensitive information in plain text
  -V, --version         Display version and exit

Order of precedence for methods that pass options to Dolphie:
	1. Command-line
	2. Credential profile (set by --cred-profile)
	3. Environment variables
	4. Dolphie's config (set by --config-file)
	5. ~/.mylogin.cnf (mysql_config_editor)
	6. ~/.my.cnf (set by --mycnf-file)

Credential profiles can be defined in Dolphie's config file as a way to store credentials for easy access.
A profile can be created by adding a section in the config file with the format: [credential_profile_<name>]
When using a credential profile, do not include the prefix 'credential_profile' (i.e. -C production)
The following options are supported in credential profiles:
	user
	password
	socket
	ssl_mode REQUIRED/VERIFY_CA/VERIFY_IDENTITY
	ssl_ca
	ssl_cert
	ssl_key
	mycnf_file
	login_path

MySQL my.cnf file supports these options under [client] section:
	host
	user
	password
	port
	socket
	ssl_mode REQUIRED/VERIFY_CA/VERIFY_IDENTITY
	ssl_ca
	ssl_cert
	ssl_key

Login path file supports these options:
	host
	user
	password
	port
	socket

Environment variables support these options:
	DOLPHIE_USER
	DOLPHIE_PASSWORD
	DOLPHIE_HOST
	DOLPHIE_PORT
	DOLPHIE_SOCKET
	DOLPHIE_SSL_MODE REQUIRED/VERIFY_CA/VERIFY_IDENTITY
	DOLPHIE_SSL_CA
	DOLPHIE_SSL_CERT
	DOLPHIE_SSL_KEY

Dolphie's config supports these options under [dolphie] section:
	(bool) tab_setup
	(str) credential_profile
	(str) user
	(str) password
	(str) host
	(int) port
	(str) socket
	(str) ssl_mode
	(str) ssl_ca
	(str) ssl_cert
	(str) ssl_key
	(str) mycnf_file
	(str) login_path
	(str) host_cache_file
	(str) tab_setup_file
	(int) refresh_interval
	(str) heartbeat_table
	(str) startup_panels
	(str) graph_marker
	(str) pypi_repository
	(str) hostgroup
	(bool) show_trxs_only
	(bool) show_additional_query_columns
	(bool) record_for_replay
	(bool) daemon_mode
	(str) daemon_mode_log_file
	(str) replay_file
	(str) replay_dir
	(int) replay_retention_hours
	(str) exclude_notify_global_vars

Supported ProxySQL versions

• ProxySQL 2.6+ (could work on previous versions but not tested)

Note: Use admin user instead of stats user so you can use all features

Supported MariaDB versions

• MariaDB 5.5/10.0/11.0+
• RDS MariaDB

Supported MySQL versions

• MySQL/Percona Server 5.6/5.7/8.x/9.x
• RDS MySQL & Aurora/Azure

MySQL Grants required

Least privilege

1. PROCESS (only if you switch to using processlist via P command)
2. SELECT to performance_schema + pt-heartbeat table (if used)
3. REPLICATION CLIENT/REPLICATION SLAVE

Recommended

1. PROCESS (only if you switch to using processlist via P command)
2. Global SELECT access (good for explaining queries, listing all databases, etc)
3. REPLICATION CLIENT/REPLICATION SLAVE
4. SUPER (required if you want to kill queries)

Record & Replay

Have you ever wished you could view the process list and various other related statistics from a specific moment in time? Perhaps during a database stall that led to an incident, and your monitoring tools failed to identify the root cause? Well, you're in luck! Dolphie has a Replay system that lets you do just that.

Starting with version 6.0.0, you can instruct Dolphie to record its data (via --record) into a local SQLite database file that's compressed with ZSTD. When you're ready to replay this data, simply pass the --replay-file option, and you can interact with it as if you were watching it live! Within the Replay interface, you can navigate with the controls: back, forward, play/pause, or seek to a specific datetime. While some features are disabled during replay, the essential functionalities remain intact. For a complete list of available commands, press ? to access the help menu.

Note that this feature can incur a significant amount of disk space depending on how busy your server is and what you set --replay-retention-hours + --refresh-interval. Adjust these values to suit your needs and monitor the disk space usage accordingly.

Daemon Mode

Also introduced in version 6.0.0 is the ability to run Dolphie in daemon mode (via --daemon option). It's designed to run in the background continuously recording data for future replay. It’s more resource-efficient than running Dolphie live, transforming it into a passive, always-on monitoring service. It eliminates Textual's TUI and creates a log file for messages while also displaying them in the console.

You have flexibility in how you run Dolphie in the background; personally, I prefer using systemctl, but alternatives like nohup or tmux can be viable options.

Here's some examples of log messages you might see:

[INFO] Starting Dolphie v6.0.0 in daemon mode with a refresh interval of 1s
[INFO] Log file: /var/log/dolphie/dolphie.log
[INFO] Connected to MySQL with Process ID 324
[INFO] Replay SQLite file: /var/lib/dolphie/replays/localhost/daemon.db (24 hours retention)
[INFO] Connected to SQLite
[INFO] Replay database metadata - Host: localhost, Port: 3306, Source: MySQL (Percona Server), Dolphie: 6.3.0
[INFO] ZSTD compression dictionary trained with 10 samples (size: 52.56KB)
[WARNING] Read-only mode changed: R/W -> RO
[INFO] Global variable innodb_io_capacity changed: 1000 -> 2000

Credential Profiles

Credential profiles can be defined in Dolphie's config file as a way to store credentials for easy access. A profile can be created by adding a section in the config file with the format: [credential_profile_<name>] The following options are supported in credential profiles:

• user
• password
• socket
• ssl_mode REQUIRED/VERIFY_CA/VERIFY_IDENTITY
• ssl_ca
• ssl_cert
• ssl_key
• mycnf_file
• login_path

Example:

[credential_profile_dev]
user = dev_user
password = dev_password

[credential_profile_prod]
mycnf_file = /secure/path/to/prod.cnf

To use a credential profile, you can specify it with -C/--cred-profile option without using the prefix credential_profile (i.e. -C prod) when starting Dolphie. Hostgroups can also use credential profiles (see below)

Hostgroups

Hostgroups are a way to easily connect to multiple hosts at once. To set this up, you will create a section in Dolphie's config file with the name you want the hostgroup to be and list each host on a new line in the format key=<json> (keys have no meaning). Hosts support optional port (default is whatever port parameter is) in the format host:port. Once ready, you will use the parameter hostgroup or Host Setup modal to see it in action!

Note: Colors can be used in the tab name by using the format [color]text[/color] (i.e. [red]production[/red]). You can also use emojis supported by Rich (can see them by running python -m rich.emoji) by using the format :emoji: (i.e. :ghost:). Rich supports the normal emoji shortcodes.

Example:

[cluster1]
1={"host": "host1", "tab_title": "[yellow]host1[/yellow] :ghost:", "credential_profile": "dev"}
2={"host": "host2", "tab_title": "[blue]host2[/blue] :ghost:", "credential_profile": "dev"}
3={"host": "host3:3307", "tab_title": "[red]production[/red]", "credential_profile": "prod"}
4={"host": "host4"}

Feedback

I welcome all questions, bug reports, and requests. If you enjoy Dolphie, please let me know! I'd love to hear from you :dolphin: