Adds a timestamp before alog from a script
awk -v sec=$(date -u +%s) '{print strftime("%Y-%m-%d %H:%M:%S",sec), $0; fflush();}'
in cron :
awk -v sec=$(date -u +\%s) '{print strftime("\%Y-\%m-\%d \%H:\%M:\%S",sec), $0; fflush();}'
So :
# echo hello world | awk -v sec=$(date -u +%s) '{print strftime("%Y-%m-%d %H:%M:%S",sec), $0; fflush();}'
2014-10-30 08:40:26 test
nJoy 🙂
1) netstat -plnt
2) varnishadm -T 127.0.0.1:6082 ban.url /wp-content/themes/catch-box -S /etc/varnish/secret
Will invalidate all content under /wp-content/themes/catch-box.
nJoy 😛
This can be done with both megacli and storcli.
Since the way forward is storcli this how to will be based on that.
storcli /c0 show all
Drive Information : ================= ------------------------------------------------------------------------------- EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp ------------------------------------------------------------------------------- 8:1 7 Onln 0 465.25 GB SATA HDD N N 512B WDC WD5003ABYX-01WERA1 U 8:2 6 Onln 0 465.25 GB SATA HDD N N 512B WDC WD5003ABYX-01WERA1 U 8:3 5 Onln 0 465.25 GB SATA HDD N N 512B WDC WD5003ABYX-01WERA1 U
.
. 8:14 4 UBad - 223.062 GB SATA SSD N N 512B INTEL SSDSC2CW240A3 U -------------------------------------------------------------------------------
Say 8:14 is marked a Ubad. (Unconfigured bad)
storcli /c0 /e8 /s14 set good
storcli /c0 show all
It should now have the disk marked as Ugood ( Unconfigured Good)
------------------------------------------------------------------------------- EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp ------------------------------------------------------------------------------- 8:1 7 Onln 0 465.25 GB SATA HDD N N 512B WDC WD5003ABYX-01WERA1 U 8:2 6 Onln 0 465.25 GB SATA HDD N N 512B WDC WD5003ABYX-01WERA1 U 8:3 5 Onln 0 465.25 GB SATA HDD N N 512B WDC WD5003ABYX-01WERA1 U
.
. 8:14 4 uGood F 223.062 GB SATA SSD N N 512B INTEL SSDSC2CW240A3 U -------------------------------------------------------------------------------
storcli /c0 -/fall show
Controller = 0 Status = Success Description = Operation on foreign configuration Succeeded FOREIGN CONFIGURATION : ===================== ---------------------------------------- DG EID:Slot Type State Size NoVDs ---------------------------------------- F - Cac0 Frgn 223.062 GB 1 ---------------------------------------- NoVDs - Number of VDs in disk group|DG - Diskgroup Total foreign drive groups = 1
This would show an external configuration which needs clearing.
Now we need to clear the config data from the previous RAID conf cached on the disk.
storcli /cx /fall import
This will clear the foreign config and start the rebuild.
To follow the rebuild :
storcli /c0 /e8 /sall show rebuild
Controller = 0
Status = Success
Description = Show Drive Rebuild Status Succeeded.
———————————————————
Drive-ID Progress% Status Estimated Time Left
———————————————————
/c0/e8/s0 – Not in progress –
/c0/e8/s1 – Not in progress –
/c0/e8/s2 – Not in progress –
/c0/e8/s3 – Not in progress –
/c0/e8/s4 – Not in progress –
/c0/e8/s5 – Not in progress –
/c0/e8/s6 – Not in progress –
/c0/e8/s7 – Not in progress –
/c0/e8/s8 – Not in progress –
/c0/e8/s9 – Not in progress –
/c0/e8/s10 – Not in progress –
/c0/e8/s11 – Not in progress –
/c0/e8/s12 – Not in progress –
/c0/e8/s13 – Not in progress –
/c0/e8/s14 93 In progress –
/c0/e8/s15 – Not in progress –
———————————————————
Or for one drive in particular:
storcli /c0 /e8 /s14 show rebuild
Controller = 0
Status = Success
Description = Show Drive Rebuild Status Succeeded.
———————————————————————————————————-
Drive-ID Progress% Status Estimated Time Left
———————————————————————————————————-
/c0/e8/s14 93 In progress –
———————————————————————————————————-
That’s it.
[ NOTE : ] Rebuild might take more than 1 day in default mode…. Just saying be patient.
nJoy 😉
Sample entry
root@192.168.168.100:/mnt/streamstorage53/stage.k/ura/web /opt/kaltura/web fuse.sshfs _netdev,auto 0 0
nJoy 😉
This is a small script that takes a bash command and decodes the parameters in non sequential order except definers.
#!/bin/bash
if [ "$#" -ne 1 ] || ! [ -d "$1" ]; then
echo "Usage: $0 " >&2
exit 1
fi
while [[ $# > 1 ]]
do
key=”$1″
echo $key
shift
case $key in
-c|–color|color)
COLOR=$1
shift
;;
-s|–section|section)
SECTION=”yes”
;;
*)
;;
esac
done
nJoy 😉
1) Install the following:
xorg-x11-xauth
xorg-x11-fonts-*
xorg-x11-utils
2) Enable the following in the sshd_config file
X11Forwarding yes
3) Use an appropriate X-Server on your desktop
nJoy 😉
Simple:
ifconfig | grep –color -E ‘^|[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}’
nJoy 😉
iptables -A INPUT -p tcp –syn –dport 80 -m connlimit –connlimit-above 15 –connlimit-mask 32 -j REJECT –reject-with tcp-reset
With high speed caching based on nginx, varnish or CDNs in general the client ip gets lost. All
IPs get reported as 127.0.0.1 since the proxy is making the socket request. Solution is two phased:
1) enable reporting the client IP to the X-Forwarded-For header at the proxy or CDN.
This depends on the proxy will be covered in separate posts.
2) installing and configuring the mod_remoteip in Apache 2.
Project link L https://github.com/ttkzw/mod_remoteip-httpd22 mkdir /usr/local/src/mod_remoteip cd /usr/local/src/mod_remoteip wget https://raw.githubusercontent.com/ttkzw/mod_remoteip-httpd22/master/mod_remoteip.c wget https://raw.githubusercontent.com/ttkzw/mod_remoteip-httpd22/master/mod_remoteip.conf wget https://raw.githubusercontent.com/ttkzw/mod_remoteip-httpd22/master/Makefile yum install httpd-devel make make install
Configuration in the Apache config file:
in /etc/httpd/conf/httpd.conf
# Load and configure mod_remoteip for Google PageSpeed Service
LoadModule remoteip_module /usr/lib64/httpd/modules/mod_remoteip.so
RemoteIPHeader X-Forwarded-For
service apache reload
voila 🙂
Unlike most other configuration systems varnish went with a compiled configuration so if there is a mistake all you get is :
Starting varnish HTTP accelerator: [FAILED]
To check what the problem is use the following :
varnishd -C -f default.vcl
varnishd -C -f default.vcl
Message from VCC-compiler:
Expected return action name.
(input Line 37 Pos 13)
return (hit_for_pass);
————############–
Running VCC-compiler failed, exit 1[root@MyHost1 varnish]# vim default.vcl
[root@MyHost1 varnish]# varnishd -C -f default.vcl
Message from VCC-compiler:
Invalid condition ‘&’ on numeric variable
only ‘==’, ‘!=’, ‘<‘, ‘>’, ‘<=’ and ‘>=’ are legal
(input Line 51 Pos 17)
if (obj.hits > 0) {
—————-#——–
Rightly so the error shouts back at you with a # under it.
Very clear and to the point, the vcl I had was HTML’ed and replaced > with >
That’s it..
nJoy 😉