操作系统：CentOS 6（x86_64）
我已经安装并配置了 varnish 但是现在无法启动。
# service varnish restart
Stopping Varnish Cache: [FAILED]
Starting Varnish Cache: [FAILED]
我已将此错误缩小到在中包含另一个 VCL 文件/etc/varnish/default.vcl。
我像这样包含 VCL：
include "/etc/varnish/domains/playwithbits.vcl";
如果我清空内容，playwithbits.vcl那么 varnish 就能启动，但是一旦我添加内容，它就会失败。
我的内容playwithbits.vcl是：
backend playwithbits {
.host = "localhost";
.port = "8080";
}
acl purge {
if (req.http.Host ~ "playwithbits.com") {
"localhost";
}
}
sub vcl_recv {
if (req.http.Host ~ "playwithbits.com") {
set req.backend = playwithbits;
if (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
return(lookup);
}
if (req.url ~ "^/$") {
unset req.http.cookie;
}
}
}
sub vcl_hit {
if (req.http.Host ~ "playwithbits.com") {
if (req.request == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
}
}
}
sub vcl_miss {
if (req.http.Host ~ "playwithbits.com") {
if (req.request == "PURGE") {
error 404 "Not in cache.";
}
if (!(req.url ~ "wp-(login|admin)")) {
unset req.http.cookie;
}
if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") {
unset req.http.cookie;
set req.url = regsub(req.url, "\?.$", "");
}
if (req.url ~ "^/$") {
unset req.http.cookie;
}
}
}
sub vcl_fetch {
if (req.http.Host ~ "playwithbits.com") {
if (req.url ~ "^/$") {
unset beresp.http.set-cookie;
}
if (!(req.url ~ "wp-(login|admin)")) {
unset beresp.http.set-cookie;
}
}
}
以下是输出# strace -e trace=file service varnish start
execve("/sbin/service", ["service", "varnish", "start"], [/* 20 vars */]) = 0
access("/etc/ld.so.preload", R_OK) = 0
open("/etc/ld.so.preload", O_RDONLY) = 3
open("/etc/ld.so.cache", O_RDONLY) = 3
open("/lib64/libtinfo.so.5", O_RDONLY) = 3
open("/lib64/libdl.so.2", O_RDONLY) = 3
open("/lib64/libc.so.6", O_RDONLY) = 3
open("/dev/tty", O_RDWR|O_NONBLOCK) = 3
open("/usr/lib/locale/locale-archive", O_RDONLY) = 3
open("/proc/meminfo", O_RDONLY) = 3
stat("/etc/varnish", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
open("/sbin/service", O_RDONLY) = 3
open("/etc/init.d/functions", O_RDONLY) = 3
--- SIGCHLD (Child exited) @ 0 (0) ---
stat("/etc/sysconfig/i18n", {st_mode=S_IFREG|0644, st_size=47, ...}) = 0
open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3
open("/etc/profile.d/lang.sh", O_RDONLY) = 3
stat("/root/.i18n", 0x7fff831f79e0) = -1 ENOENT (No such file or directory)
stat("/etc/sysconfig/init", {st_mode=S_IFREG|0644, st_size=1153, ...}) = 0
open("/etc/sysconfig/init", O_RDONLY) = 3
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/initscripts.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_US.utf8/LC_MESSAGES/initscripts.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_US/LC_MESSAGES/initscripts.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/initscripts.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.utf8/LC_MESSAGES/initscripts.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC_MESSAGES/initscripts.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
--- SIGCHLD (Child exited) @ 0 (0) ---
--- SIGCHLD (Child exited) @ 0 (0) ---
chdir("/") = 0
stat("/etc/init.d/varnish", {st_mode=S_IFREG|0755, st_size=2837, ...}) = 0
stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/sbin/env", 0x7fff831f8960) = -1 ENOENT (No such file or directory)
stat("/usr/sbin/env", 0x7fff831f8960) = -1 ENOENT (No such file or directory)
stat("/bin/env", {st_mode=S_IFREG|0755, st_size=23832, ...}) = 0
stat("/bin/env", {st_mode=S_IFREG|0755, st_size=23832, ...}) = 0
access("/bin/env", X_OK) = 0
stat("/bin/env", {st_mode=S_IFREG|0755, st_size=23832, ...}) = 0
access("/bin/env", R_OK) = 0
stat("/bin/env", {st_mode=S_IFREG|0755, st_size=23832, ...}) = 0
stat("/bin/env", {st_mode=S_IFREG|0755, st_size=23832, ...}) = 0
access("/bin/env", X_OK) = 0
stat("/bin/env", {st_mode=S_IFREG|0755, st_size=23832, ...}) = 0
access("/bin/env", R_OK) = 0
Starting Varnish Cache: [FAILED]
--- SIGCHLD (Child exited) @ 0 (0) ---
有人知道这是什么问题吗？
解决方案：
问题出在以下块上：
acl purge {
if (req.http.Host ~ "playwithbits.com") {
"localhost";
}
}
acl purge只能将字符串作为值，因此if无效。替换为：
acl purge {
"localhost";
}
而且效果非常好。
答案1
使用良好的配置（default.vcl？）启动 varnish，然后在加载 VCL 之前尝试对其进行语法检查。在 varnish v2.1 中（假设 3.x 中类似）：
$ varnishadm -T 127.0.0.1:6082
vcl.load error <path_to_your_vcl>