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3

Just use shell command postcat -qbh queueid | sendmail -f sender forward_address@example.com Source: man postcat, man sendmail and this thread Postfix: change sender in queued messages


3

You shouldn't have installed mysql-community-release-fc21-5.noarch in the first place. That RPM is clearly labelled that it's for fedora core 21. yum erase mysql-community-release-fc21-5.noarch. Next you're trying to install mysql-community-release-el5-5.noarch.rpm. Do that and you're back to where you started, with a slightly different error message. ...


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Apperently you also configured the Webtatic yum repository to get a newer version of PHP (php56w) than what is included by default in CentOS or provided by EPEL. That conflicts with the PHP version the EPEL phpMyAdmin package expects. It could well be that phpMyAdmin still works well with a (much) newer PHP version and then the suggested --skip-broken is a ...


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If you ssh into your Dom0 (Xen Core).. Su to root... . then do a 'xm list' first is your Centos domU vm running? or is it powered off by defualt. If it is you can do a 'xm start xxxxx' where xxxxx is the name that was shown in the 'xm list' Then wait a couple of seconds and try 'xm console xxxxx' where again xxxxx is the name of the vm your trying to ...


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If SELinux is in Enforcing mode, it won't let you do that... Try changing this boolean to true: setsebool -P httpd_enable_homedirs on Please note, I don't recommend disabling SELinux! There are many tools out there which can help you use SELinux to secure your system. Please see the CentOS documentation here: http://wiki.centos.org/HowTos/SELinux ...


2

The original cron required each entry to end with a newline so yes sometimes you do need a blank line or something at the end. Although cron requires that each entry in a crontab end in a newline character, neither the crontab command nor the cron daemon will detect this error. Instead, the crontab will appear to load normally. However, the ...


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Use yum history list to see recent yum transactions. Use yum history info <ID> to view the details of a transaction. Use yum history undo last to revert the most recent transaction, or yum history undo <ID> to revert a specific transaction.


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I'm sure that the difference from Your test server and production server is - firewall. Check that it accept output new request to Google servers and established from them. If You use iptables one way to reach this claim: iptables -A INPUT -i eth0 -p tcp -s <google_ipv4_1> -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp -d <google_ipv4_1> -j ...


1

EPEL redis package are kind of outdated, on RHEL6 you can use Remi's Repository: http://rpms.famillecollet.com/. They are up to date, also with the latest releases from 3.0 and 2.8 versions. Have a look here for a description of the latest packages.


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To make shutdown work from outside the guest on CentOS 6, you need to install the acpid package and start the acpid service. yum install acpid chkconfig acpid on service acpid start


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I'm not sure you're setting up grace mode correctly. The varnish book seems to indicate that you should be setting some of this in vcl_fetch and perhaps vcl_recv. (I'm not familiar with Varnish, but I hope to be soon). Core grace mechanisms A graced object is an object that has expired, but is still kept in cache Grace mode is when Varnish uses a ...


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Chances are good that are sending cookies in your request. Varnish doesn't cache anything with cookies in them. This from the builtin.vcl for Varnish 4: 47 sub vcl_recv { 48 if (req.method == "PRI") { 49 /* We do not support SPDY or HTTP/2.0 */ 50 return (synth(405)); 51 } 52 if (req.method != "GET" && 53 ...


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Both approaches are OK. What you want is for your swap to be continuous and not fragmented, and both approaches will ensure that. LVM can cause fragmented volumes, if you extend/shrink them often, but since swap is defined at creation time, it should stay pretty much continuous. With second approach, you have a downside of not being able to easily extend ...


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Are you experiencing any site performance issues? The thing with Linux is that it's not a bad thing for top to show that all your RAM is in use. Try giving us the output of free -m. When an application is finished with the memory it used, the kernel doesn't immediately purge the pages of data and mark it as free memory again. For instance, my desktop VM I ...


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1) Remember - Apache uses either httpd.conf or ssl.conf depending on how Apache was configured - since ssl.conf is preferred make sure the "failing" server is NOT using ssl.conf instead. 2) Have you tried copying the httpd.conf file from the working server to the "failing" server. If everything else is the same, that should make SSL work, if it doesn't ...



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