Our system is using clustering with three hosts but Suddenly Third host's storage performance is super slow can't do anything like 'df -h' command on the host. other two hosts are okay storage performance.
It happened to only third host.
Can you give advice to me how to resolve it?
I already restarted several time the third host but it keep happening to only third host.
Problem
Can't use any related storage command on cli enviroment such as 'df'.
Can't migrate to another host but it's working perfectly between first host and second host.
There isn't any error on third host, vCenter and iLO.
Enviroment
HPE DL380 G9 Server
vCenter: 6.7
vSphere 6.7
Storage: msa 2050 ssd
HBA: QLE2692 Dual Port 16Gb Fibre Channel to PCIe Adapter
I found the problem....It was hardware problem.
After moving to another HBA port on Third host, the problem was resolved.
I need to check HBA port problem or FC cable problem.
It was FC gbic problem. After replacing with new fc gbic, the problem resolved.
Related
I have a BACnet network where multiple BACnet IP to MSTP routers are used.
The network configurations are as follows:
Network Configuration sketch
Now I am trying to read data from the network using Volttron. Previously no data was read, so I tried changing use_read_multiple:false in driver configurations. Still to make the request even smaller for the network I changed max_per_request: 1,
Now it is reading data but it shows an error after some time and puts the BMS down. This means we are not able to read or even discover devices on the BMS nor it gives data in VOLTTRON.
It gives an error on the router with most of AHUs, FCUs are attached. I tried testing just that Router (Say its identifier is 4900, now most of the devices like 4900:1, 4900:3, etc.) start giving an error on both BMS and my Laptop.
I have tried grouping too by making groups of 2-5 devices and setting "group_offset_interval" in Platform Driver configurations to some really high value to know whether it is a network congestion issue on the MSTP network. Sometime it starts working but after some time (an hour), it starts giving error on both sides BMS and VOLTTRON too. Although devices are ON.
It gives error on different Routers and sometimes many routers stop working.
How can I solve this issue?
Thanks in anticipation.
Specifications:
Volttron: 7.0
BACpypes: 0.16.7 (as required by Volttron for bacnet)
I could be wrong here (in adding this to the mix) - but as it's relating to MSTP (- BACnet MS/TP), but you might want to also consider if there's a (half-typical) MSTP physical/wiring issue - might not necessarily be the software (or at least not alone).
(You might end up having to consider bifurcating the network / keep 'divide & conquer'ing it into small/2-halves segments to see/locate a wiring issue.)
I installed MicroStack in Ubuntu for the virtual machine. My instance floating IP is 10.20.20.238. I want to access my instance from Windows cmd，only can ping 172.21.10.13, but can't ping 10.20.20.238，so I want to change the 10.20.20.1 network to my own network. What should I do?enter image description here
Stackoverflow is about code development, not IT management. serverfault.com would be a more appropriate forum, or perhaps superuser.com.
microstack "fakes" the external network. It's not really external, but only exists on br-ex, the external bridge. It doesn't look like you can create a microstack cloud with a different external network CIDR, but you can try adding a subnet to the external network, inserting ens33 in br-ex and adding IP address 172.21.10.13 to br-ex . I have not tried this.
However, if your only requirement is to access the instance from the PC, you can create a tunnel or add a route. What makes sense in your case depends on the virtual machine hypervisor you are using (yours seems to be VMware - I can't comment on that) and the operating system on which this hypervisor runs.
I am trying read traffic from a couple of test mobile devices, iphones, androids etc. I've done this for over a year using primarily Fiddler but also Charles. I did it up until yesterday without any issue. But today the devices do not appear to be connecting to my computer. I have confirmed that everything is configured right eg. device is set to use my computer as a proxy after I put in my computers IP address that I got by doing a simple ipconfig, sorry if this all sounds redundant but just letting you know my steps, better to have more information than less. I also turned off my firewall no change.
I thought perhaps something was done to our network, but I installed Fiddler on a coworkers computer and was able to proxy into that computer without any issue. Confirmed all drivers are up to date and really there was no change between yesterday and today except a deep scan with Malwarebites. Frankly sort of at a loss for what it might be, I have reinstalled Fiddler on my computer (the primary one I use, didn't reinstall Charles cause I don't want to deal with license issue right now) but at same time what are the chances that both stopped working at same time.
There's a high likelihood that your PC's firewall is blocking the inbound connection. You should check your firewall configuration to see if it's configured to allow inbound connections to Fiddler.
On your Fiddler-running PC, ensure Tools > Fiddler Options > Connections > Allow Remote Computers to connect is checked (if not, check it and restart).
From your co-worker's PC, try visiting http://<FiddlerPCName>:8888/ in the browser. Does the traffic appear in Fiddler?
I am trying to find the location of the database where a particular website is saving to.
The website is saving to some local database in our system, but I am unable to discover where.
I have tried using WireShark to find the IP of the machine where the website sends data to (i.e. the machine which has the database) but currently the only packets showing up are those from the website to my machine and vice versa.
Any ideas?
Thanks
I would start by tracking through the code & website config. If you have sufficient access to run Wireshartk on the host can you not search for config files, find the serverside code, etc?
If you can't see packets on the network interface and you know you've found all network interfaces then it would appear possible the DB has to be on the same machine. Check for recently changed files with you favourite tool (Windows explorer/search, find on Unix, etc).
Is it caching so you haven't yet caused it to read/write to a remote DB while watching? Try watching Wireshark at boot up.
Depending on the nature of the data it could be an in memory DB or something that reads from a disk file into memory at boot up.
I work while traveling at the moment. I'm at the point where I want to start setting up the paypal integration, but I can't because I can't open port 80 up so that paypal sandbox can communicate with my computer. I've tried getting my own USB modem w/ sim card (data plan) but it seems they are really aggressive with blocking ports on those also.
So, i can't get to the routers in the hotels since it would be wrong (and i don't have the passwords).
Is there some kind of trick that I can use so I can mess with paypal sandbox integration? I've tried using hosting (godaddy) but it's awful slow to keep uploading changes to a host just to see if what you did worked (not to mention problems with debugging).
Looks like i didn't get any help this time, but i found a way around it! I created a VPN in Windows 7 in my home network (so my work laptop can connect back home). I checked the setting that allows remote vpn connections to pick their own IP address so my work laptop would have a static ip.
I then simply opened up port 80, and forwarded it to the static IP set for my laptop. I can't believe it, but it works!