Questions tagged [lvs]
LVS is the Linux Virtual Server, www.linuxvirtualserver.org. It offers persistent load balancing built ontop of the linux kernel.
26
questions with no upvoted or accepted answers
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1
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Monitoring Linux Kernel Space Processing
I'm running two "services" that are served in linux kernel-space:
Linux Netfilter Firewall ("iptables")
Linux Virtual Server Loadbalancer ("IPVS", "LVS")
Now I want to (performance-)monitor my "...
3
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0
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82
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+100
Docker swarm routing mesh does not forward UDP traffic after container restart
I have setup a docker stack with a couple services. One of the service is publishing a UDP port that it is listening for traffic on (it happens to be a Wireguard endpoint, but I don't think this is ...
3
votes
1
answer
795
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Active Active failover
I have an application which is handling UDP traffic. Need to run the setup in active-active mode with two machines and only one IP exposed to external world.
Will LVS be helpful in this scenario or ...
3
votes
1
answer
2k
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Direct Routing in Load Balancer
I wish to set up an load balancer via direct routing switching technique.I installed ipvsadm via
$ sudo apt-get install ipvsadm
Setup
Virtual IP is 172.17.10.173 subnet mask 255.255.240.0
linux ...
2
votes
0
answers
467
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Apache as Load balancer - forcing a break in persistent connection
I have setup a load balancer with Apache 2.2 via mod_proxy and mod_proxy_balancer. The load balancing works just fine, but there is one case I cannot find any configuration options for, namely, while ...
2
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0
answers
1k
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lvs with NAT routing - horrible performance to one real server
I have an LVS setup with NAT routing and two real servers (as an FYI, we're only routing http on tcp port 80). Currently requests to real server A respond just fine, with page load times of 3-4 ...
1
vote
0
answers
9
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Remove/Drop tracked UDP "connections" from LVS connection table (`ipvsadm -Lc`)
Is it possible to explicitly remove or drop a tracked UDP "connection" from the LVS connection table outputted by ipvsadm -Lc?
I am using LVS in the context of a Docker Swarm deployment and ...
1
vote
0
answers
202
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LVS not working
vip:10.110.23.239
real-server:10.110.23.141
lvs:10.110.23.134
I have deployed a spring-boot application on real-server(10.110.23.141) with port 18787, it can be accessed successfully on any server.
...
1
vote
0
answers
37
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the strange value of SRE in a D-SACK packet
I'm troubleshooting a strange network issue in our production environment.
The dumped pcap file comes from the full NAT mode LVS , and the toploy of the ip address in the dump file is:
172.19.132.90(...
1
vote
0
answers
4k
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vgdisplay not showing free PE / Size space
I have Dell PowerEdge R730xd running Centos 6. I just added more physical disks to our raid and used open manage to increase the raid size, which is now at 67,063.50GB. I'm using xfs and have a lv (...
1
vote
1
answer
1k
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Install Google Seesaw Load Balancer
I have been trying to setup Google Seesaw which is a load balancer based on LVS but have been unsuccessful so far following the directions [on the index.md and /doc/getting_started.md). It is stated ...
1
vote
0
answers
1k
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Keepalived cant find one of my interfaces
I have just installed a new server (Ubuntu 14.04) to start testing our keepalived configurations, which work fine on (Ubuntu 12.04)
We do not assign the public IP on the eth1 interface, we allow ...
1
vote
0
answers
141
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L2TP loadbalancing
Due to need to scale, I'm setting a new l2tp server using l2tpns and trying to balance the load between my two l2tp servers using LVS
LVS configuration
ipvsadm -A -u 192.168.10.10:1701 -s sh
ipvsadm ...
1
vote
0
answers
281
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Keepliaved not loading IPv6 lvs rules on boot
When starting Keepalived manually, it correctly populates LVS tables as seen by:
ipvsadm
However, when I boot the machine - only IPv4 rules are added.
If I restart the keepliaved server manually ...
1
vote
1
answer
667
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SElinux stopping LVS from working with https
LVS/piranha is setup and trying to get it to balance https instead of http. Setup https testing with wget - idea from this link. Works when I do it at the command prompt. With SELinux enforcing, ...
1
vote
1
answer
408
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Why my Ldirectord check multiple times on read server every interval?
I have a Ldirectord server and two real servers. My ldirectord used to check the request page on real server once in every interval, but now I found that it check four times. I have monitored the log ...
0
votes
0
answers
101
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Linux IPVS in DR mode on vyos router/firewall not forwarding reply packets
I am setting up setup where:
I use vyos as router/firewall
on vyos i setup also IPVS in DR mode. It means that IPVS changes request packet MAC-address to realserver MAC-address and forwards packet ...
0
votes
1
answer
254
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how to check whether the backend server in a loadbalancer has bypassed the loadbalancer in a DSR mode while replying to client?
I couldn't find much information on how to verify if DSR mode in a loadbalancer works or not.
Is there a way to find whether the loadbalancer is bypassed during a reply from the backend server to the ...
0
votes
0
answers
263
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IPVS transmitting packets to incorrect backends
We are using ipvs for L4 loadbalancing which transmits packets to L7 backends on ipip tunnel mode.
There are three ipvs systems configured with source hashing for persistence. Sometimes, ipvs is ...
0
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0
answers
55
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If cluster node acting as a load balancing router fails, can we dircet future requests to any one active real server?
For load balanced cluster that I am using, in case of router node fails, setup takes nearly 2 minutes until the VIP comes online on another running node (which earlier acted as real-server node).
All ...
0
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1
answer
1k
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LVS Load Balancer Not Getting Response
I am trying to learn IPVS/LVS and am a bit stuck. The director seems to be configured properly, with packets coming in, but packets are not being forwarded to the backend servers. Any tips on what ...
0
votes
0
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1k
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LVS + keepalived for load balancing transparent SQUID proxies
I need to load balance a number of SQUID proxies configured in transparent mode. Below is a simple diagram with one LB and SQUID boxes.
----------
| Client |
...
0
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0
answers
1k
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Ipvsadm: How can I set forward to 'masquerading'?
I follow the steps to set up load balances like:
$ sudo ipvsadm -A -t 127.0.0.1:8301 -s rr
$ sudo ipvsadm -a -t 127.0.0.1:8301 -r 127.0.0.1:8310 -m
In Ubuntu 14.04, kernel 3.13.0-44-generic #73-...
0
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1
answer
429
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iptables rules for lvs using piranha gui
I am trying to bulid an lvs system, where 202.141.81.239 is the virtual IP and 202.141.81.241 and 202.141.81.242 are the lvs routers.Ths system is working fine in our intranet but is not through ...
0
votes
1
answer
2k
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LVS / IPVS difference in ActiveConn since upgrading
I've recently migrated from an old version of LVS / ldirectord (Ultra Monkey) to a new Debian install with ldirectord.
Now the amount of Active Connections is usually higher than the amount of ...
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votes
1
answer
1k
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LVS router stopped working after reboot
I am using RHEL 6.8 for load balancing using LVS direct routing. For some reason I had to restart my LVS router.
after rebooting, LVS service was not working
I have done following things, still it is ...