HTTP Status Codes

I can't always remember all the HTTP status Codes. I'm creating this blog post just to remember what they are. 

• Reference from http://en.wikipedia.org/wiki/List_of_HTTP_status_code

1xx: Informational - Request received, continuing process
2xx: Success - The action was successfully received, understood, and accepted
3xx: Redirection - Further action must be taken in order to complete the request
4xx: Client Error - The request contains bad syntax or cannot be fulfilled
5xx: Server Error - The server failed to fulfill an apparently valid request

While many of these are common (404, 200, 403) many are not and hard to remember. This list is modified from the wc3 and the wikipedia.

1xx informational

100

Client should continue with request

101

Server is switching protocols

102

Server has received and is processing the request

103

Resume aborted PUT or POST requests

122

URI is longer than a maximum of 2083 characters

2xx success

200

standard response for successful HTTP requests

201

request has been fulfilled; new resource created

202

Request accepted, processing pending

203

Request processed, information may be from another source

204

Request processed, no content returned

205

Request processed, no content returned, reset document view

206

Partial resource return due to request header

207

XML, can contain multiple separate responses

208

results previously returned

226

request fulfilled, response is instance-manipulations

3xx redirection

300

multiple options for the resource delivered

301

this and all future requests directed to the given URI

302

temporary response to request found via alternative URI

303

permanent response to request found via alternative URI

304

resource has not been modified since last requested

305

content located elsewhere, retrieve from there

306

subsequent requests should use the specified proxy

307

connect again to different URI as provided

308

connect again to a different URI using the same method

4xx client error

400
request cannot be fulfilled due to bad syntax

401

Authentication is possible but has failed

402

Payment required, reserved for future use

403

Server refuses to respond to request

404

Requested resource could not be found

405

Request method not supported by that resource

406

Content not acceptable according to the Accept headers

407

client must first authenticate itself with the proxy

408

server timed out waiting for the request

409

request could not be processed because of conflict

410

resource is no longer available and will not be available again

411

request did not specify the length of its content

412

server does not meet request preconditions

413

request is larger than the server is willing or able to process

414

URI provided was too long for the server to process

415

server does not support media type

416

Client has asked for unprovidable portion of the file

417

Server cannot meet requirements of Expect request-header field

420

Twitter rate limiting

422

Request unable to be followed due to semantic errors

423

Resource that is being accessed is locked

424

Request failed due to failure of a previous request

426

Client should switch to a different protocol

428

origin server requires the request to be conditional

429

user has sent too many requests in a given amount of time

431

server is unwilling to process the request

444

server returns no information and closes the connection

449

request should be retried after performing action

450

Windows Parental Controls blocking access to webpage

451

The server cannot reach the client's mailbox.

499

connection closed by client while HTTP server is processing

5xx server error

500

generic error message

501

server does not recognise method or lacks ability to fulfill

502

server received an invalid response from upstream server

503

server is currently unavailable

504

gateway did not receive response from upstream server

505

server does not support the HTTP protocol version

506

Content negotiation for the request results in a circular reference

507

Server is unable to store the representation

508

Server detected an infinite loop while processing the request

509

Bandwidth limit exceeded

510

Further extensions to the request are required

511

Client needs to authenticate to gain network access

598

network read timeout behind the proxy

599

network connect timeout behind the proxy

How to Create F5 Monitor, Node, Pool, and Virtual Server

 

Part I: Create Monitor  

1. Login to F5 ( open additional tab, if needed, to copy settings from another item) 
2. Create Monitor (for SomeApp) as needed, only need 1 monitor per app, not env. 
3. Click on Monitor > +   
4. On General Properties page, enter Name, Description, Type ( choose HTTP) 
5. Under  Configuration in the Send String section, add the following 
   1. GET /<appname>/healthcheck\r\n 
6. On Receive String section add Health: OK 
7. Leave rest at default settings and click Finished  

Part II: Create Node (as needed)  

1. To create new node, click on Local Traffic > Nodes > Node List > + 
2. Fill in the following information in the General Properties section 
   1. Name:  Server short hostname, ie devXXX 
   2. Address:  IP Address for node, ie 192.168.100.X 
   3. Description:  <hostname> <appname> ie srvXXX-Application1 
3. In the Configuration Section, fill in the following 
   1. Health Monitor:  Node Specific 
   2. Select Monitor:  Choose icmp from available list and move to Active 
   3. Leave rest of settings at default and click on Finished  

Part III:  Create Pool  

1. To create new Pool, click on Local Traffic > Pools > Pool List + 
2. Fill in the following information in the Configuration Section 
   1. Note: SomeApp uses <env>service_<app>_<port> as name and ports start at somePort# and increase by XX.  
   2. example for app tms:  devservice_app_port#    
   3. Name:  <env>service_app_port 
   4. Description:  <Env> Web Service SomeApp <App> 
   5. Health Monitors:  Add http1.1 or Health Check for App (if they have it) to Active 
3. In the Resources section add the following information 
   1. Load Balancing: Leave as default Round Robin 
   2. Click on Node List and add Node you created above in Part II 
   3. Set the service port, usually 8080 for tomcat. 
   4. Click Add then click Finished 

Part IV: Create Virtual Server   

1. Create new Virtual Server, click on Virtual Servers > Virtual Server List + button 
2. Fill in the following information in the General Properties section. 
   1. NOTE:  name follows same format as Pool name for service, ie <env>service_<app>_<port> 
   2. Name:  <env>devservice_<app>_<port> 
   3. Description: ENV APP VIP 
   4. Source: 0.0.0.0/0 
   5. Destination: IP Address assigned  for VIP, see wiki 
      1. 192.168.100.200 (for dev) 
3. Fill in the following information for Configuration (Click Advanced) 
   1. Leave all as default unless specified below 
   2. Protocol profile (Client) :              service-tcp-profile 
   3. HTTP Profile:     http-xfwd 
   4. VLANS and Tunnels                         
      1. Enabled On 
      2. Select vlan123 
4. Fill in the following information for the Resources section 
   1. Default Pool: Choose the Pool Created above to match the app 
   2. Click on Finished to complete 

Part V: Sync Configuration   

1. To sync configuration to second f5 node click on ‘Changes Pending’ in upper left of browser 
2. Click on the (self) f5 that you are working on under the Devices section 
3. Make sure Sync Device to Group is selected under Sync Options 
4. Click on Sync    
5. Repeat all steps above for each environment and sync afterwards. 

Basic Cisco Commands

Information about Basic Cisco Admin Tasks 

This document describes many of the common and very basic Cisco tasks an admin will perform.  

  

Some Basic Tasks 

• Configuring interface/port 
• Enable port/int 
• Configure Wireless LAN Controller AP speed and duplex  

Very Basic Cisco Commands  

• To show status of interface and other info  
  • show int status mod X (where X=module or blade number)  
• show int status module 4 | inc 41  (to show port 41) 
  • show int gX/XX (where X=module, XX=port number)  
• int g7/2 
  • show run int int 

• Check interface status with "sh int g#/#" where the letter is the interface type (g=gigabit, f=fastethernet) and the #'s are the module/port  
• Change port/interface configuration  
• To change description:  
  • switch#configure terminal switch(config)#interface fa0/1 switch(config-if)#description “This is 1st Port of My Switch” switch(config-if)#end switch#  
  • To remove: no description  
• select range of ports to configure  
  • switch# config t  
  • switch(config)#int range gi1/1 - 24 
• To change speed,etc..  
  • switch# config t switch(config) int gx/x switch(config) speed 100 switch(config) duplex full switch(config) end 
• to enable port  
  • switch# config t switch(config) interface gX/XX switch(config) no shutdown switch(config) end 
• to disable port  
  • switch# config t switch(config) interface gX/XX switch(config-if) no description switch(config-if) switchport access vlan 1 switch(config-if) shutdown switch(config-if) end 
• to set vlan on interface  
  • Enter configuration commands, one per line.  End with CNTL/Z. site1_CORE_6509_2(config)#int g4/40 site1_CORE_6509_2(config-if)#switchport access vlan 850 site1_CORE_6509_2(config-if)#end site1_CORE_6509_2#show int status mod 4 | inc 40 Gi4/40       "site1_ilbl_e45 connected    850        a-full  a-100 10/100/1000BaseT 
• To save backup and write current  
  • [optional] Backup your old configuration switch#copy startup-config startup-config.241207 
  • Save your running configuration (so that it will start at boot) switch#copy running-config startup-config 
• To resest module or 'blade'  
  • type hw-module module 12 reset 
• To see other cisco devices attached to specific equipment use "sh cdp neigh"  
  • for additional details on a specific device you see use "sh cdp neigh g#/# detail" where the g#/# is the interface of the device you are logged onto for the deive you want to look at. 
• Check your root bridge for vlans with "sh spanning-tree root"  
• Check the HSRP state of your sup engines with "sh redundancy"  
• Check how your traffic is routing with "sh ip route", use the "| inc 10.xx." to check for specific routes  
• Check the active HSRP route for specific vlans with "sh standby brief"  
• Find the port a specific mac address is on, use "sh mac-add | inc xxxx" where xxxx is the last 4 of the mac address.  
• Find what mac addresses are on a specific port, use "sh mac-add int Gx/xx" where gx/x if the interface you want to look at (g1/14 would be a gig port on module 1, interface 14)  
• To restart a module and bring it back online use "hw-module module # reset".  
• Tell the switch to restart at a later time  
  • switch# reload at mmm or hhh:mmm or switch# reload in mmm 
• To Configure a Wireless LAN Controller Access Point speed and duplex.  
  • Login to the WLC through Putty and issue the command "config ap ethernet duplex full speed 100 site1-WAP_Name_1"