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Jul
9
awarded  Yearling
Dec
6
awarded  Revival
Oct
22
revised Postfix: how to use simple file for SASL authentication?
postgresql->postfix
Oct
22
suggested suggested edit on Postfix: how to use simple file for SASL authentication?
Oct
22
comment Postfix: how to use simple file for SASL authentication?
Use a firewall to let only the ip addresses of the other VPS connect. Additionally you can set the mynetworks variable in main.cf to make postfix aware of that, even if the firewall fails. If you really want SASL, read the SASL_README that comes with postfix and set up SASL to use /etc/sasldb as a "database". Should work out of the box. saslpasswd adds/removes/changes the file.
Oct
22
comment Routing suddenly broke on a KVM guest
ICMP redirects, linux-ip.net/html/routing-icmp.html Your solution is quite unusual, normally one wouldn't bridge to a real interface but setup routing and masquerading on the host.
Oct
22
comment How to keep subtree removal (`rm -rf`) from starving other processes for Disk I/O?
Sorry I'm late, but you could investigate cgroups and the blkio controller: kernel.org/doc/Documentation/cgroups/blkio-controller.txt
Sep
27
comment Can someone explain to me the apache log “[info] server seems busy”?
Good answer. IIRC "accept()" is called in a central process/thread. Upon a connection, the resulting socket is then handed to a worker thread/process. (Linux kernel 3.11 has changed that though, multiple accepts will be possible.)
Sep
27
comment CentOS 6.4 iSCSI Target - crm shell error
In RHEL5 you needed to run the cman service too: "service cman start". Don't know about RHEL6.
Jul
29
awarded  Revival
Jul
9
awarded  Yearling
Jul
28
comment IPv6 hosts configure default route with router's link-local address
Womble is right, either you advertise a router or you don't. If you do, then the clients should do the right thing, either use the link-local address of the router or it has advertised its global-address. "Advertise" equals "NDP", see en.wikipedia.org/wiki/Neighbor_Discovery_Protocol
Jul
25
comment Diagnose hard lockup on Linux
Yes, either netconsole or a serial console could help. Testing of physical memory with memtest86 could also be helpful. Lastly, if the server is connected to a managed switch, could you find out if there are errors on the ethernet interface where the server is connected? I had these kind of crashes recently too, and I suspect it to be a bug in a network driver.
Jul
25
comment PostgreSQL fails on boot, but works fine after logging in
Maybe one of data partitions/tablespaces are not available when the server starts initially. Like disks mounted over iscsi or usb.
Jul
9
awarded  Yearling
Jun
11
comment Monitoring Linux Kernel Space Processing
The tool you want is oprofile: oprofile.sourceforge.net. Systemtap could also be useful: sourceware.org/systemtap
Jun
8
awarded  Constituent
Jun
8
awarded  Caucus
Jun
1
comment Can't get NetSNMP agent to answer using my prorietary MIB
You not only need your own mib (and please ask for you own enterprise id with IANA), you need to tell snmpd what to do when it gets a request for this OID. Read the section "EXTENDING AGENT FUNCTIONALITY" in snmpd.conf man page.
May
30
comment Fedora 16: intranet local FQDNs don't resolve
You have 3 nameservers configured in resolv.conf, but 2 of them (8.8.8.8 and 8.8.4.4) don't know about your ".local" domain. Remove them and add them as forwarders in your resolver (10.22.33.1)