configuration - How to increase the max_connections value for MySQL on Ubuntu Server? -


i use mysql 5.6 on ubuntu server 14.04 , want increase maximal allowed number of simultaneous connections (currently set default 151).

responsible setting max_connections in /etc/mysql/my.cnf. set 200 , restarted mysql server. now, has value 200:

$ cat /etc/mysql/my.cnf | grep "connections" max_connections        = 200 $ /etc/init.d/mysql restart  * stopping mysql database server mysqld                                                                                             [ ok ]   * starting mysql database server mysqld                                                                                             [ ok ]   * checking tables need upgrade, corrupt or  not closed cleanly.

but nothing has changed:

show variables "max_connections"; +-----------------+-------+ ¦ variable_name   ¦ value ¦ +-----------------+-------+ ¦ max_connections ¦ 151   ¦ +-----------------+-------+

how custom configuration of max_connections working?

$ ulimit -a | grep "open" open files                      (-n) 1024 $ ulimit -n 4096 $ ulimit -a | grep "open" open files                      (-n) 4096

added /etc/security/limits.conf:

* soft nofile 1024000 * hard nofile 1024000 * soft nproc 10240 * hard nproc 10240 root soft nproc unlimited

added /etc/mysql/my.cnf:

[mysqld_safe] open_files_limit = 1024000 [mysqld] open_files_limit = 1024000

but seems ignored:

show status 'open%'; +--------------------------+-------+ ¦ variable_name            ¦ value ¦ +--------------------------+-------+ ¦ open_files               ¦ 52    ¦ +--------------------------+-------+ ¦ open_streams             ¦ 0     ¦ +--------------------------+-------+ ¦ open_table_definitions   ¦ 434   ¦ +--------------------------+-------+ ¦ open_tables              ¦ 417   ¦ +--------------------------+-------+ ¦ opened_files             ¦ 847   ¦ +--------------------------+-------+ ¦ opened_table_definitions ¦ 0     ¦ +--------------------------+-------+ ¦ opened_tables            ¦ 0     ¦ +--------------------------+-------+

to avoid case of setting correct configs in wrong files set option in these files (some of them not there, created them):

$ mysqld --help --verbose | grep -b 1 cnf default options read following files in given order: /etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf

no effect.

you have increase open files limit on os, , afterwards, can put higher max_connections value.


Comments

Post a Comment

Popular posts from this blog

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m
Read more

javascript - Z-index in d3.js -

i have map , when hover effect on region of map below yellow line , circle, last ones disappear. how can solve problem? http://jsfiddle.net/ot21n9qx/ var arc = g.append("path") .style("fill", "none") .style("stroke", "yellow") .style("stroke-width", 2) .attr("d", "m" + pathorigin[0] + "," + pathorigin[1] + " q" + svgpoint[0] + "," + pathorigin[1] + " " + svgpoint[0] + "," + svgpoint[1]); var circlesize = d3.scale.linear() .domain([0, 0.5, 1]) .range([4, 10, 4]); svg not have z order draws objects in order created. need create path , circle after create highlight regions. here forked fiddle: http://jsfiddle.net/o00fzgaf/1/
Read more