{"id":1532,"date":"2018-08-10T15:53:02","date_gmt":"2018-08-10T15:53:02","guid":{"rendered":"http:\/\/dbtut.com\/?p=1532"},"modified":"2018-11-09T22:37:40","modified_gmt":"2018-11-09T22:37:40","slug":"concurrent-mysql-client","status":"publish","type":"post","link":"https:\/\/dbtut.com\/index.php\/2018\/08\/10\/concurrent-mysql-client\/","title":{"rendered":"Concurrent MySQL client"},"content":{"rendered":"

CCQL:<\/strong><\/p>\n

CCQL is a tool that allow user to connect multiple mysql server node Concurrently at the same time. It comes into picture when a user want to run a same operation on multiple server and it operational time.<\/span><\/p>\n

How It works?<\/strong><\/p>\n

It connects to multiple MySQL servers at the same time with the given options & credentials or in other way user and password should be same to runs given query. This saves operational time and gives better productivity.<\/p>\n

Download ccql binary from the following weblink:
\nhttps:\/\/github.com\/github\/ccql\/releases<\/a><\/p>\n

Below is the Quick option which can be used while doing using CCQL<\/p>\n

Usage of ccql:<\/strong><\/div>\n
\u00a0 -C string<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 Credentials file, expecting [client] scope, with ‘user’, ‘password’ fields. Overrides -u and -p<\/div>\n
\u00a0 -H string<\/div>\n
\u00a0 \u00a0 Hosts file, hostname[:port] comma or space or newline delimited format. If not given, hosts read from stdin<\/div>\n
\u00a0 -Q string<\/div>\n
\u00a0 \u00a0 Query\/queries input file<\/div>\n
\u00a0 -d string<\/div>\n
\u00a0 \u00a0 \u00a0 Default schema to use (default “information_schema”)<\/div>\n
\u00a0 -h string<\/div>\n
\u00a0 \u00a0 Comma or space delimited list of hosts in hostname[:port] format. If not given, hosts read from stdin<\/div>\n
\u00a0 -m uint<\/div>\n
\u00a0 \u00a0 Max concurrent connections (default 32)<\/div>\n
\u00a0 -p string<\/div>\n
\u00a0 \u00a0 MySQL password<\/div>\n
\u00a0 -q string<\/div>\n
\u00a0 \u00a0 Query\/queries to execute<\/div>\n
\u00a0 -s string<\/div>\n
\u00a0 \u00a0 \u00a0 List of databases to query from; overrides -d, prints schema name to output<\/div>\n
\u00a0 -t float<\/div>\n
\u00a0 \u00a0 Connect timeout seconds<\/div>\n
\u00a0 -u string<\/div>\n
\u00a0 \u00a0 MySQL username (default OS user)<\/div>\n
<\/div>\n
Lets see few example how it can be used.<\/em><\/strong><\/div>\n
<\/div>\n
    \n
  1. If a DBA want to check the version of all the servers whether they are exactly same or not.<\/em><\/li>\n<\/ol>\n
    \n
    ccql -C \/anylocaltion\/.mypass.cnf -h \"host001,host003,host005\" -q \"SELECT VERSION();\"<\/pre>\n<\/blockquote>\n
    the above command<\/p><\/blockquote>\n
    -C : we need to pass the credential file which contains login id password of the user which is common among all node<\/p>\n
    [client]\r\n\r\nuser=\"userName\"\r\n\r\npassword=\"password\"<\/pre>\n
     <\/p>\n
    -h : You can either pass the hostname or pass the hostname file which It contains the list of host name that you want to connect.<\/p>\n
    -q : the Query which you are going to pass to the servers.<\/p>\n
    2. Even one can use Bash\/shell script predefined function with that command to filter the output<\/p>\n
     <\/p>\n
    e.g<\/strong><\/p>\n
    ccql -C \/anylocaltion\/.mypass.cnf -h hostname.txt -q \"SELECT \u00a0SLAVE STATUS\" | awk \u00a0' { print $1 } '<\/pre>\n
     <\/p>\n
    The given above are the basic example for the understanding there are lot of things a DBA can do using this tool and save operational time.<\/p>\n
    More details are available on the given below Link.<\/p>\n
    https:\/\/github.com\/github\/ccql<\/p>\n\n
    <\/div>\n
    <\/path><\/svg><\/i> \"Loading\"<\/p>\n
    <\/div>\n","protected":false},"excerpt":{"rendered":"
    CCQL: CCQL is a tool that allow user to connect multiple mysql server node Concurrently at the same time. It comes into picture when a user want to run a same operation on multiple server and it operational time. How It works? It connects to multiple MySQL servers at the same time with the given …<\/p>\n
    <\/div>\n
    <\/path><\/svg><\/i> \"Loading\"<\/p>\n
    <\/div>\n","protected":false},"author":76,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1532","post","type-post","status-publish","format-standard","","category-mysql"],"aioseo_notices":[],"yoast_head":"\nConcurrent MySQL client - Database Tutorials<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dbtut.com\/index.php\/2018\/08\/10\/concurrent-mysql-client\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Concurrent MySQL client - Database Tutorials\" \/>\n<meta property=\"og:description\" content=\"CCQL: CCQL is a tool that allow user to connect multiple mysql server node Concurrently at the same time. 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