Newbie spread questions
Olufemi Anthony <[email protected]> Fri, 4 Oct 2002 13:49:35 -0700
| Newsgroups | gmane.comp.apache.mod-log-spread.user |
|---|---|
| Message-ID | <[email protected]> |
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C26BE7.8C46C1E0 Content-Type: text/plain; charset="iso-8859-1" Hi all, I'm new to spread. I have the following questions: i. From a reliability point of view, is it preferable to run spread in duplex mode or load-balanced mode, with say 2 collector servers? 3 collector servers? In duplex mode, we mirror the logs. say we have hourly logging. Hence if one machine goes down, the log harvesting program has to make a decision as to which files to harvest for that hour. However, in failover mode, we do not have the benefit of backup logging if the machine in rotation goes down and spread isn't smart enough to make the switch to the other one. What has been your experience with either of the 2 modes? ii. What sort of reliability does one get with spread? Are there any numbers you can point me to? Which high-traffic websites are running spread today? Femi ------_=_NextPart_001_01C26BE7.8C46C1E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Diso-8859-1"> <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version = 5.5.2653.12"> <TITLE>Newbie spread questions</TITLE> </HEAD> <BODY> <P><FONT SIZE=3D2 FACE=3D"Arial">Hi all, I'm new to spread. I have the = following questions:</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">i. From a reliability point of = view, is it preferable to run spread in duplex mode or = load-balanced mode, with say</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">2 collector servers?</FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">3 collector servers?</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">In duplex mode, we mirror the logs. = say we have hourly logging. Hence if one machine goes down, the log = harvesting program has to make a decision as to which files to harvest = for that hour.</FONT></P> <P><FONT SIZE=3D2 FACE=3D"Arial">However, in failover mode, we do not = have the benefit of backup logging if the machine in rotation = goes down and spread isn't smart enough to make the switch to the other = one.</FONT></P> <P><FONT SIZE=3D2 FACE=3D"Arial">What has been your experience with = either of the 2 modes?</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">ii. What sort of reliability = does one get with spread? Are there any numbers you can point me to? = Which high-traffic websites are running spread today? </FONT></P> <P><FONT SIZE=3D2 FACE=3D"Arial">Femi</FONT><FONT SIZE=3D2 = FACE=3D"Arial"> </FONT> </P> </BODY> </HTML> ------_=_NextPart_001_01C26BE7.8C46C1E0--