Thank you Chris, We only have one webserver and two tomcat applications on the back end. Where do I set the connections allowed if we are using mod_proxy_httpd?
Thanks, Larry Cohen On Wed, Sep 2, 2015 at 4:47 PM, Christopher Schultz < ch...@christopherschultz.net> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Larry, > > On 9/2/15 3:54 PM, Cohen, Laurence wrote: > > We have a webserver and an appserver, and the webserver talks to > > the appserver on port 8007. Every once the communication will > > stop, and we will notice an error on the webserver saying that it > > can't talk to the appserver. When this happens, I will run a > > netstat -an |grep 8007 on the appserver, and there are hundreds of > > connections to that port. When I restart the app, it will be back > > to about 10 connections, and they will start growing again. > > > > I'm trying to figure out why they are growing so quickly, and why > > they aren't dying when the connection is no longer needed. > > My guess is that the number of connections coming from httpd and the > number of connections allowed to Tomcat don't match up. > > How many web servers? How many back-end Tomcats? Which connector are > you using? > > If w = # of httpd instances > c = # of total httpd threads > then you need w * c connections allowed in all of your Tomcats (see > <Connector> attribute maxConnections. > > Another possibility is that the connection timeouts on httpd (mod_jk > connect_timeout, in ms) versus Tomcat (<Connector> connectionTimeout, > in ms) are not the same. > > - -chris > -----BEGIN PGP SIGNATURE----- > Comment: GPGTools - http://gpgtools.org > > iQIcBAEBCAAGBQJV52BfAAoJEBzwKT+lPKRYPKkP/AlnFjGxvPJPyjw3vhjDowiZ > NS2vKKQZiQfzW/xqn30cbE3HJheC+7vL+ErhqCBlehZmuoFngaLiT5fpR2cPvwaM > XdKB5xa7HJ/vOIBqY2vLwM0cYuqAMgYHP+MFpwGJyi3ezoyf0cn+D78y9HPJIOta > K04BrKm5ZRlxMqtuCeGdP/hdT59H8X+S2XLzJ5oug8090TCHqDOmnz+tzR9BDe6o > c0GgzdXTs+EweGgaq57V9dNaZl/GnrMkkDDhqS2AyEPhG7kjVKELQ0Rx2cbSGvLG > EoAincsN3tMNx5vG/ZfHLf93qwB2jfqCMVnedMg7urOTtDDH8aDFhuixDxzUhHwL > iulppCeeMEy8UpQV5KOLeqcww+OXZz+uLHPhP+vvqBMVhBt6Sxh1JlckqthBb3KH > fc1rztloe+iw9ehVFX1654/zgVKkj77FtNZcc4bU+KGYoQmIb1fdGSfNBTTd6OTS > eU1IHkb0GTsUkMa4/RZn9WhQ6r+ya8ZZL0RqtZB3nZgOr3tY2dO/aXFTu01S1meR > 8wUvPEN/0bYgKMjV4qCWnpYEUdw8K9FmAphqEQThzy+4NlhfUDG7vvg+LqvTkAzt > gS1S3pV6LPK2fBjKUbShLwJW3dCvEGu016oMiLHEpwBFVEC8WWl7sIV3SgZXqNZP > 1k/PoTnoLV3KFsBhKKbr > =lCAl > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > -- [image: www.novetta.com] Larry Cohen System Administrator 12021 Sunset Hills Road, Suite 400 Reston, VA 20190 Email lco...@novetta.com Office 703-885-1064
